From 927a8b330435b4c959ad851e32b83d97a6e3001b Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Mon, 16 Mar 2009 13:26:38 +1100 Subject: Move libcli/auth to the top level --- libcli/auth/config.mk | 13 + libcli/auth/credentials.c | 375 ++++++++++++++++++++++++ libcli/auth/credentials.h | 46 +++ libcli/auth/libcli_auth.h | 24 ++ libcli/auth/ntlm_check.c | 603 ++++++++++++++++++++++++++++++++++++++ libcli/auth/session.c | 218 ++++++++++++++ libcli/auth/smbdes.c | 381 ++++++++++++++++++++++++ libcli/auth/smbencrypt.c | 595 +++++++++++++++++++++++++++++++++++++ source4/auth/ntlm/ntlm_check.c | 603 -------------------------------------- source4/libcli/auth/config.mk | 17 -- source4/libcli/auth/credentials.c | 375 ------------------------ source4/libcli/auth/credentials.h | 46 --- source4/libcli/auth/libcli_auth.h | 24 -- source4/libcli/auth/session.c | 218 -------------- source4/libcli/auth/smbdes.c | 381 ------------------------ source4/libcli/auth/smbencrypt.c | 595 ------------------------------------- source4/libcli/config.mk | 1 - source4/main.mk | 1 + 18 files changed, 2256 insertions(+), 2260 deletions(-) create mode 100644 libcli/auth/config.mk create mode 100644 libcli/auth/credentials.c create mode 100644 libcli/auth/credentials.h create mode 100644 libcli/auth/libcli_auth.h create mode 100644 libcli/auth/ntlm_check.c create mode 100644 libcli/auth/session.c create mode 100644 libcli/auth/smbdes.c create mode 100644 libcli/auth/smbencrypt.c delete mode 100644 source4/auth/ntlm/ntlm_check.c delete mode 100644 source4/libcli/auth/config.mk delete mode 100644 source4/libcli/auth/credentials.c delete mode 100644 source4/libcli/auth/credentials.h delete mode 100644 source4/libcli/auth/libcli_auth.h delete mode 100644 source4/libcli/auth/session.c delete mode 100644 source4/libcli/auth/smbdes.c delete mode 100644 source4/libcli/auth/smbencrypt.c diff --git a/libcli/auth/config.mk b/libcli/auth/config.mk new file mode 100644 index 0000000000..c09d1631c0 --- /dev/null +++ b/libcli/auth/config.mk @@ -0,0 +1,13 @@ +[SUBSYSTEM::LIBCLI_AUTH] +PUBLIC_DEPENDENCIES = \ + MSRPC_PARSE \ + LIBSAMBA-HOSTCONFIG + +LIBCLI_AUTH_OBJ_FILES = $(addprefix $(libclicommonsrcdir)/auth/, \ + credentials.o \ + session.o \ + smbencrypt.o \ + smbdes.o) + +PUBLIC_HEADERS += ../libcli/auth/credentials.h +$(eval $(call proto_header_template,$(libclicommonsrcdir)/auth/proto.h,$(LIBCLI_AUTH_OBJ_FILES:.o=.c))) diff --git a/libcli/auth/credentials.c b/libcli/auth/credentials.c new file mode 100644 index 0000000000..3c77b0836d --- /dev/null +++ b/libcli/auth/credentials.c @@ -0,0 +1,375 @@ +/* + Unix SMB/CIFS implementation. + + code to manipulate domain credentials + + Copyright (C) Andrew Tridgell 1997-2003 + Copyright (C) Andrew Bartlett 2004 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include "includes.h" +#include "system/time.h" +#include "auth/auth.h" +#include "../lib/crypto/crypto.h" +#include "libcli/auth/libcli_auth.h" + +/* + initialise the credentials state for old-style 64 bit session keys + + this call is made after the netr_ServerReqChallenge call +*/ +static void creds_init_64bit(struct creds_CredentialState *creds, + const struct netr_Credential *client_challenge, + const struct netr_Credential *server_challenge, + const struct samr_Password *machine_password) +{ + uint32_t sum[2]; + uint8_t sum2[8]; + + sum[0] = IVAL(client_challenge->data, 0) + IVAL(server_challenge->data, 0); + sum[1] = IVAL(client_challenge->data, 4) + IVAL(server_challenge->data, 4); + + SIVAL(sum2,0,sum[0]); + SIVAL(sum2,4,sum[1]); + + ZERO_STRUCT(creds->session_key); + + des_crypt128(creds->session_key, sum2, machine_password->hash); + + des_crypt112(creds->client.data, client_challenge->data, creds->session_key, 1); + des_crypt112(creds->server.data, server_challenge->data, creds->session_key, 1); + + creds->seed = creds->client; +} + +/* + initialise the credentials state for ADS-style 128 bit session keys + + this call is made after the netr_ServerReqChallenge call +*/ +static void creds_init_128bit(struct creds_CredentialState *creds, + const struct netr_Credential *client_challenge, + const struct netr_Credential *server_challenge, + const struct samr_Password *machine_password) +{ + unsigned char zero[4], tmp[16]; + HMACMD5Context ctx; + struct MD5Context md5; + + ZERO_STRUCT(creds->session_key); + + memset(zero, 0, sizeof(zero)); + + hmac_md5_init_rfc2104(machine_password->hash, sizeof(machine_password->hash), &ctx); + MD5Init(&md5); + MD5Update(&md5, zero, sizeof(zero)); + MD5Update(&md5, client_challenge->data, 8); + MD5Update(&md5, server_challenge->data, 8); + MD5Final(tmp, &md5); + hmac_md5_update(tmp, sizeof(tmp), &ctx); + hmac_md5_final(creds->session_key, &ctx); + + creds->client = *client_challenge; + creds->server = *server_challenge; + + des_crypt112(creds->client.data, client_challenge->data, creds->session_key, 1); + des_crypt112(creds->server.data, server_challenge->data, creds->session_key, 1); + + creds->seed = creds->client; +} + + +/* + step the credentials to the next element in the chain, updating the + current client and server credentials and the seed +*/ +static void creds_step(struct creds_CredentialState *creds) +{ + struct netr_Credential time_cred; + + DEBUG(5,("\tseed %08x:%08x\n", + IVAL(creds->seed.data, 0), IVAL(creds->seed.data, 4))); + + SIVAL(time_cred.data, 0, IVAL(creds->seed.data, 0) + creds->sequence); + SIVAL(time_cred.data, 4, IVAL(creds->seed.data, 4)); + + DEBUG(5,("\tseed+time %08x:%08x\n", IVAL(time_cred.data, 0), IVAL(time_cred.data, 4))); + + des_crypt112(creds->client.data, time_cred.data, creds->session_key, 1); + + DEBUG(5,("\tCLIENT %08x:%08x\n", + IVAL(creds->client.data, 0), IVAL(creds->client.data, 4))); + + SIVAL(time_cred.data, 0, IVAL(creds->seed.data, 0) + creds->sequence + 1); + SIVAL(time_cred.data, 4, IVAL(creds->seed.data, 4)); + + DEBUG(5,("\tseed+time+1 %08x:%08x\n", + IVAL(time_cred.data, 0), IVAL(time_cred.data, 4))); + + des_crypt112(creds->server.data, time_cred.data, creds->session_key, 1); + + DEBUG(5,("\tSERVER %08x:%08x\n", + IVAL(creds->server.data, 0), IVAL(creds->server.data, 4))); + + creds->seed = time_cred; +} + + +/* + DES encrypt a 8 byte LMSessionKey buffer using the Netlogon session key +*/ +void creds_des_encrypt_LMKey(struct creds_CredentialState *creds, struct netr_LMSessionKey *key) +{ + struct netr_LMSessionKey tmp; + des_crypt56(tmp.key, key->key, creds->session_key, 1); + *key = tmp; +} + +/* + DES decrypt a 8 byte LMSessionKey buffer using the Netlogon session key +*/ +void creds_des_decrypt_LMKey(struct creds_CredentialState *creds, struct netr_LMSessionKey *key) +{ + struct netr_LMSessionKey tmp; + des_crypt56(tmp.key, key->key, creds->session_key, 0); + *key = tmp; +} + +/* + DES encrypt a 16 byte password buffer using the session key +*/ +void creds_des_encrypt(struct creds_CredentialState *creds, struct samr_Password *pass) +{ + struct samr_Password tmp; + des_crypt112_16(tmp.hash, pass->hash, creds->session_key, 1); + *pass = tmp; +} + +/* + DES decrypt a 16 byte password buffer using the session key +*/ +void creds_des_decrypt(struct creds_CredentialState *creds, struct samr_Password *pass) +{ + struct samr_Password tmp; + des_crypt112_16(tmp.hash, pass->hash, creds->session_key, 0); + *pass = tmp; +} + +/* + ARCFOUR encrypt/decrypt a password buffer using the session key +*/ +void creds_arcfour_crypt(struct creds_CredentialState *creds, uint8_t *data, size_t len) +{ + DATA_BLOB session_key = data_blob(creds->session_key, 16); + + arcfour_crypt_blob(data, len, &session_key); + + data_blob_free(&session_key); +} + +/***************************************************************** +The above functions are common to the client and server interface +next comes the client specific functions +******************************************************************/ + +/* + initialise the credentials chain and return the first client + credentials +*/ +void creds_client_init(struct creds_CredentialState *creds, + const struct netr_Credential *client_challenge, + const struct netr_Credential *server_challenge, + const struct samr_Password *machine_password, + struct netr_Credential *initial_credential, + uint32_t negotiate_flags) +{ + creds->sequence = time(NULL); + creds->negotiate_flags = negotiate_flags; + + dump_data_pw("Client chall", client_challenge->data, sizeof(client_challenge->data)); + dump_data_pw("Server chall", server_challenge->data, sizeof(server_challenge->data)); + dump_data_pw("Machine Pass", machine_password->hash, sizeof(machine_password->hash)); + + if (negotiate_flags & NETLOGON_NEG_128BIT) { + creds_init_128bit(creds, client_challenge, server_challenge, machine_password); + } else { + creds_init_64bit(creds, client_challenge, server_challenge, machine_password); + } + + dump_data_pw("Session key", creds->session_key, 16); + dump_data_pw("Credential ", creds->client.data, 8); + + *initial_credential = creds->client; +} + +/* + step the credentials to the next element in the chain, updating the + current client and server credentials and the seed + + produce the next authenticator in the sequence ready to send to + the server +*/ +void creds_client_authenticator(struct creds_CredentialState *creds, + struct netr_Authenticator *next) +{ + creds->sequence += 2; + creds_step(creds); + + next->cred = creds->client; + next->timestamp = creds->sequence; +} + +/* + check that a credentials reply from a server is correct +*/ +bool creds_client_check(struct creds_CredentialState *creds, + const struct netr_Credential *received_credentials) +{ + if (!received_credentials || + memcmp(received_credentials->data, creds->server.data, 8) != 0) { + DEBUG(2,("credentials check failed\n")); + return false; + } + return true; +} + + +/***************************************************************** +The above functions are common to the client and server interface +next comes the server specific functions +******************************************************************/ + +/* + initialise the credentials chain and return the first server + credentials +*/ +void creds_server_init(struct creds_CredentialState *creds, + const struct netr_Credential *client_challenge, + const struct netr_Credential *server_challenge, + const struct samr_Password *machine_password, + struct netr_Credential *initial_credential, + uint32_t negotiate_flags) +{ + if (negotiate_flags & NETLOGON_NEG_128BIT) { + creds_init_128bit(creds, client_challenge, server_challenge, + machine_password); + } else { + creds_init_64bit(creds, client_challenge, server_challenge, + machine_password); + } + + *initial_credential = creds->server; + creds->negotiate_flags = negotiate_flags; +} + +/* + check that a credentials reply from a server is correct +*/ +bool creds_server_check(const struct creds_CredentialState *creds, + const struct netr_Credential *received_credentials) +{ + if (memcmp(received_credentials->data, creds->client.data, 8) != 0) { + DEBUG(2,("credentials check failed\n")); + dump_data_pw("client creds", creds->client.data, 8); + dump_data_pw("calc creds", received_credentials->data, 8); + return false; + } + return true; +} + +NTSTATUS creds_server_step_check(struct creds_CredentialState *creds, + struct netr_Authenticator *received_authenticator, + struct netr_Authenticator *return_authenticator) +{ + if (!received_authenticator || !return_authenticator) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (!creds) { + return NT_STATUS_ACCESS_DENIED; + } + + /* TODO: this may allow the a replay attack on a non-signed + connection. Should we check that this is increasing? */ + creds->sequence = received_authenticator->timestamp; + creds_step(creds); + if (creds_server_check(creds, &received_authenticator->cred)) { + return_authenticator->cred = creds->server; + return_authenticator->timestamp = creds->sequence; + return NT_STATUS_OK; + } else { + ZERO_STRUCTP(return_authenticator); + return NT_STATUS_ACCESS_DENIED; + } +} + +void creds_decrypt_samlogon(struct creds_CredentialState *creds, + uint16_t validation_level, + union netr_Validation *validation) +{ + static const char zeros[16]; + + struct netr_SamBaseInfo *base = NULL; + switch (validation_level) { + case 2: + if (validation->sam2) { + base = &validation->sam2->base; + } + break; + case 3: + if (validation->sam3) { + base = &validation->sam3->base; + } + break; + case 6: + if (validation->sam6) { + base = &validation->sam6->base; + } + break; + default: + /* If we can't find it, we can't very well decrypt it */ + return; + } + + if (!base) { + return; + } + + /* find and decyrpt the session keys, return in parameters above */ + if (validation_level == 6) { + /* they aren't encrypted! */ + } else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) { + if (memcmp(base->key.key, zeros, + sizeof(base->key.key)) != 0) { + creds_arcfour_crypt(creds, + base->key.key, + sizeof(base->key.key)); + } + + if (memcmp(base->LMSessKey.key, zeros, + sizeof(base->LMSessKey.key)) != 0) { + creds_arcfour_crypt(creds, + base->LMSessKey.key, + sizeof(base->LMSessKey.key)); + } + } else { + if (memcmp(base->LMSessKey.key, zeros, + sizeof(base->LMSessKey.key)) != 0) { + creds_des_decrypt_LMKey(creds, + &base->LMSessKey); + } + } +} diff --git a/libcli/auth/credentials.h b/libcli/auth/credentials.h new file mode 100644 index 0000000000..4e11cb090f --- /dev/null +++ b/libcli/auth/credentials.h @@ -0,0 +1,46 @@ +/* + Unix SMB/CIFS implementation. + + code to manipulate domain credentials + + Copyright (C) Andrew Tridgell 2004 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include "librpc/gen_ndr/netlogon.h" + +struct creds_CredentialState { + uint32_t negotiate_flags; + uint8_t session_key[16]; + uint32_t sequence; + struct netr_Credential seed; + struct netr_Credential client; + struct netr_Credential server; + uint16_t secure_channel_type; + const char *domain; + const char *computer_name; + const char *account_name; + struct dom_sid *sid; +}; + +/* for the timebeing, use the same neg flags as Samba3. */ +/* The 7 here seems to be required to get Win2k not to downgrade us + to NT4. Actually, anything other than 1ff would seem to do... */ +#define NETLOGON_NEG_AUTH2_FLAGS 0x000701ff + +/* these are the flags that ADS clients use */ +#define NETLOGON_NEG_AUTH2_ADS_FLAGS (0x200fbffb | NETLOGON_NEG_ARCFOUR | NETLOGON_NEG_128BIT | NETLOGON_NEG_SCHANNEL) + + diff --git a/libcli/auth/libcli_auth.h b/libcli/auth/libcli_auth.h new file mode 100644 index 0000000000..ec1c1e7d98 --- /dev/null +++ b/libcli/auth/libcli_auth.h @@ -0,0 +1,24 @@ +/* + samba -- Unix SMB/CIFS implementation. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ +#ifndef __LIBCLI_AUTH_H__ +#define __LIBCLI_AUTH_H__ + +#include "librpc/gen_ndr/netlogon.h" +#include "libcli/auth/credentials.h" +#include "libcli/auth/proto.h" + +#endif /* __LIBCLI_AUTH_H__ */ diff --git a/libcli/auth/ntlm_check.c b/libcli/auth/ntlm_check.c new file mode 100644 index 0000000000..0805b1b043 --- /dev/null +++ b/libcli/auth/ntlm_check.c @@ -0,0 +1,603 @@ +/* + Unix SMB/CIFS implementation. + Password and authentication handling + Copyright (C) Andrew Bartlett 2001-2004 + Copyright (C) Gerald Carter 2003 + Copyright (C) Luke Kenneth Casson Leighton 1996-2000 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include "includes.h" +#include "../lib/crypto/crypto.h" +#include "librpc/gen_ndr/netlogon.h" +#include "libcli/auth/libcli_auth.h" +#include "auth/ntlm/ntlm_check.h" + +/**************************************************************************** + Core of smb password checking routine. +****************************************************************************/ + +static bool smb_pwd_check_ntlmv1(TALLOC_CTX *mem_ctx, + const DATA_BLOB *nt_response, + const uint8_t *part_passwd, + const DATA_BLOB *sec_blob, + DATA_BLOB *user_sess_key) +{ + /* Finish the encryption of part_passwd. */ + uint8_t p24[24]; + + if (part_passwd == NULL) { + DEBUG(10,("No password set - DISALLOWING access\n")); + /* No password set - always false ! */ + return false; + } + + if (sec_blob->length != 8) { + DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect challenge size (%lu)\n", + (unsigned long)sec_blob->length)); + return false; + } + + if (nt_response->length != 24) { + DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect password length (%lu)\n", + (unsigned long)nt_response->length)); + return false; + } + + SMBOWFencrypt(part_passwd, sec_blob->data, p24); + +#if DEBUG_PASSWORD + DEBUG(100,("Part password (P16) was |\n")); + dump_data(100, part_passwd, 16); + DEBUGADD(100,("Password from client was |\n")); + dump_data(100, nt_response->data, nt_response->length); + DEBUGADD(100,("Given challenge was |\n")); + dump_data(100, sec_blob->data, sec_blob->length); + DEBUGADD(100,("Value from encryption was |\n")); + dump_data(100, p24, 24); +#endif + if (memcmp(p24, nt_response->data, 24) == 0) { + if (user_sess_key != NULL) { + *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16); + SMBsesskeygen_ntv1(part_passwd, user_sess_key->data); + } + return true; + } + return false; +} + +/**************************************************************************** + Core of smb password checking routine. (NTLMv2, LMv2) + Note: The same code works with both NTLMv2 and LMv2. +****************************************************************************/ + +static bool smb_pwd_check_ntlmv2(TALLOC_CTX *mem_ctx, + const DATA_BLOB *ntv2_response, + const uint8_t *part_passwd, + const DATA_BLOB *sec_blob, + const char *user, const char *domain, + bool upper_case_domain, /* should the domain be transformed into upper case? */ + DATA_BLOB *user_sess_key) +{ + /* Finish the encryption of part_passwd. */ + uint8_t kr[16]; + uint8_t value_from_encryption[16]; + DATA_BLOB client_key_data; + + if (part_passwd == NULL) { + DEBUG(10,("No password set - DISALLOWING access\n")); + /* No password set - always false */ + return false; + } + + if (sec_blob->length != 8) { + DEBUG(0, ("smb_pwd_check_ntlmv2: incorrect challenge size (%lu)\n", + (unsigned long)sec_blob->length)); + return false; + } + + if (ntv2_response->length < 24) { + /* We MUST have more than 16 bytes, or the stuff below will go + crazy. No known implementation sends less than the 24 bytes + for LMv2, let alone NTLMv2. */ + DEBUG(0, ("smb_pwd_check_ntlmv2: incorrect password length (%lu)\n", + (unsigned long)ntv2_response->length)); + return false; + } + + client_key_data = data_blob_talloc(mem_ctx, ntv2_response->data+16, ntv2_response->length-16); + /* + todo: should we be checking this for anything? We can't for LMv2, + but for NTLMv2 it is meant to contain the current time etc. + */ + + if (!ntv2_owf_gen(part_passwd, user, domain, upper_case_domain, kr)) { + return false; + } + + SMBOWFencrypt_ntv2(kr, sec_blob, &client_key_data, value_from_encryption); + +#if DEBUG_PASSWORD + DEBUG(100,("Part password (P16) was |\n")); + dump_data(100, part_passwd, 16); + DEBUGADD(100,("Password from client was |\n")); + dump_data(100, ntv2_response->data, ntv2_response->length); + DEBUGADD(100,("Variable data from client was |\n")); + dump_data(100, client_key_data.data, client_key_data.length); + DEBUGADD(100,("Given challenge was |\n")); + dump_data(100, sec_blob->data, sec_blob->length); + DEBUGADD(100,("Value from encryption was |\n")); + dump_data(100, value_from_encryption, 16); +#endif + data_blob_clear_free(&client_key_data); + if (memcmp(value_from_encryption, ntv2_response->data, 16) == 0) { + if (user_sess_key != NULL) { + *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16); + SMBsesskeygen_ntv2(kr, value_from_encryption, user_sess_key->data); + } + return true; + } + return false; +} + +/**************************************************************************** + Core of smb password checking routine. (NTLMv2, LMv2) + Note: The same code works with both NTLMv2 and LMv2. +****************************************************************************/ + +static bool smb_sess_key_ntlmv2(TALLOC_CTX *mem_ctx, + const DATA_BLOB *ntv2_response, + const uint8_t *part_passwd, + const DATA_BLOB *sec_blob, + const char *user, const char *domain, + bool upper_case_domain, /* should the domain be transformed into upper case? */ + DATA_BLOB *user_sess_key) +{ + /* Finish the encryption of part_passwd. */ + uint8_t kr[16]; + uint8_t value_from_encryption[16]; + DATA_BLOB client_key_data; + + if (part_passwd == NULL) { + DEBUG(10,("No password set - DISALLOWING access\n")); + /* No password set - always false */ + return false; + } + + if (sec_blob->length != 8) { + DEBUG(0, ("smb_sess_key_ntlmv2: incorrect challenge size (%lu)\n", + (unsigned long)sec_blob->length)); + return false; + } + + if (ntv2_response->length < 24) { + /* We MUST have more than 16 bytes, or the stuff below will go + crazy. No known implementation sends less than the 24 bytes + for LMv2, let alone NTLMv2. */ + DEBUG(0, ("smb_sess_key_ntlmv2: incorrect password length (%lu)\n", + (unsigned long)ntv2_response->length)); + return false; + } + + client_key_data = data_blob_talloc(mem_ctx, ntv2_response->data+16, ntv2_response->length-16); + + if (!ntv2_owf_gen(part_passwd, user, domain, upper_case_domain, kr)) { + return false; + } + + SMBOWFencrypt_ntv2(kr, sec_blob, &client_key_data, value_from_encryption); + *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16); + SMBsesskeygen_ntv2(kr, value_from_encryption, user_sess_key->data); + return true; +} + +/** + * Compare password hashes against those from the SAM + * + * @param mem_ctx talloc context + * @param client_lanman LANMAN password hash, as supplied by the client + * @param client_nt NT (MD4) password hash, as supplied by the client + * @param username internal Samba username, for log messages + * @param client_username username the client used + * @param client_domain domain name the client used (may be mapped) + * @param stored_lanman LANMAN password hash, as stored on the SAM + * @param stored_nt NT (MD4) password hash, as stored on the SAM + * @param user_sess_key User session key + * @param lm_sess_key LM session key (first 8 bytes of the LM hash) + */ + +NTSTATUS hash_password_check(TALLOC_CTX *mem_ctx, + bool lanman_auth, + const struct samr_Password *client_lanman, + const struct samr_Password *client_nt, + const char *username, + const struct samr_Password *stored_lanman, + const struct samr_Password *stored_nt) +{ + if (stored_nt == NULL) { + DEBUG(3,("ntlm_password_check: NO NT password stored for user %s.\n", + username)); + } + + if (client_nt && stored_nt) { + if (memcmp(client_nt->hash, stored_nt->hash, sizeof(stored_nt->hash)) == 0) { + return NT_STATUS_OK; + } else { + DEBUG(3,("ntlm_password_check: Interactive logon: NT password check failed for user %s\n", + username)); + return NT_STATUS_WRONG_PASSWORD; + } + + } else if (client_lanman && stored_lanman) { + if (!lanman_auth) { + DEBUG(3,("ntlm_password_check: Interactive logon: only LANMAN password supplied for user %s, and LM passwords are disabled!\n", + username)); + return NT_STATUS_WRONG_PASSWORD; + } + if (strchr_m(username, '@')) { + return NT_STATUS_NOT_FOUND; + } + + if (memcmp(client_lanman->hash, stored_lanman->hash, sizeof(stored_lanman->hash)) == 0) { + return NT_STATUS_OK; + } else { + DEBUG(3,("ntlm_password_check: Interactive logon: LANMAN password check failed for user %s\n", + username)); + return NT_STATUS_WRONG_PASSWORD; + } + } + if (strchr_m(username, '@')) { + return NT_STATUS_NOT_FOUND; + } + return NT_STATUS_WRONG_PASSWORD; +} + +/** + * Check a challenge-response password against the value of the NT or + * LM password hash. + * + * @param mem_ctx talloc context + * @param challenge 8-byte challenge. If all zero, forces plaintext comparison + * @param nt_response 'unicode' NT response to the challenge, or unicode password + * @param lm_response ASCII or LANMAN response to the challenge, or password in DOS code page + * @param username internal Samba username, for log messages + * @param client_username username the client used + * @param client_domain domain name the client used (may be mapped) + * @param stored_lanman LANMAN ASCII password from our passdb or similar + * @param stored_nt MD4 unicode password from our passdb or similar + * @param user_sess_key User session key + * @param lm_sess_key LM session key (first 8 bytes of the LM hash) + */ + +NTSTATUS ntlm_password_check(TALLOC_CTX *mem_ctx, + bool lanman_auth, + bool ntlm_auth, + uint32_t logon_parameters, + const DATA_BLOB *challenge, + const DATA_BLOB *lm_response, + const DATA_BLOB *nt_response, + const char *username, + const char *client_username, + const char *client_domain, + const struct samr_Password *stored_lanman, + const struct samr_Password *stored_nt, + DATA_BLOB *user_sess_key, + DATA_BLOB *lm_sess_key) +{ + const static uint8_t zeros[8]; + DATA_BLOB tmp_sess_key; + + if (stored_nt == NULL) { + DEBUG(3,("ntlm_password_check: NO NT password stored for user %s.\n", + username)); + } + + *lm_sess_key = data_blob(NULL, 0); + *user_sess_key = data_blob(NULL, 0); + + /* Check for cleartext netlogon. Used by Exchange 5.5. */ + if ((logon_parameters & MSV1_0_CLEARTEXT_PASSWORD_ALLOWED) + && challenge->length == sizeof(zeros) + && (memcmp(challenge->data, zeros, challenge->length) == 0 )) { + struct samr_Password client_nt; + struct samr_Password client_lm; + char *unix_pw = NULL; + bool lm_ok; + + DEBUG(4,("ntlm_password_check: checking plaintext passwords for user %s\n", + username)); + mdfour(client_nt.hash, nt_response->data, nt_response->length); + + if (lm_response->length && + (convert_string_talloc(mem_ctx, CH_DOS, CH_UNIX, + lm_response->data, lm_response->length, + (void **)&unix_pw, NULL, false))) { + if (E_deshash(unix_pw, client_lm.hash)) { + lm_ok = true; + } else { + lm_ok = false; + } + } else { + lm_ok = false; + } + return hash_password_check(mem_ctx, + lanman_auth, + lm_ok ? &client_lm : NULL, + nt_response->length ? &client_nt : NULL, + username, + stored_lanman, stored_nt); + } + + if (nt_response->length != 0 && nt_response->length < 24) { + DEBUG(2,("ntlm_password_check: invalid NT password length (%lu) for user %s\n", + (unsigned long)nt_response->length, username)); + } + + if (nt_response->length > 24 && stored_nt) { + /* We have the NT MD4 hash challenge available - see if we can + use it + */ + DEBUG(4,("ntlm_password_check: Checking NTLMv2 password with domain [%s]\n", client_domain)); + if (smb_pwd_check_ntlmv2(mem_ctx, + nt_response, + stored_nt->hash, challenge, + client_username, + client_domain, + false, + user_sess_key)) { + *lm_sess_key = *user_sess_key; + if (user_sess_key->length) { + lm_sess_key->length = 8; + } + return NT_STATUS_OK; + } + + DEBUG(4,("ntlm_password_check: Checking NTLMv2 password with uppercased version of domain [%s]\n", client_domain)); + if (smb_pwd_check_ntlmv2(mem_ctx, + nt_response, + stored_nt->hash, challenge, + client_username, + client_domain, + true, + user_sess_key)) { + *lm_sess_key = *user_sess_key; + if (user_sess_key->length) { + lm_sess_key->length = 8; + } + return NT_STATUS_OK; + } + + DEBUG(4,("ntlm_password_check: Checking NTLMv2 password without a domain\n")); + if (smb_pwd_check_ntlmv2(mem_ctx, + nt_response, + stored_nt->hash, challenge, + client_username, + "", + false, + user_sess_key)) { + *lm_sess_key = *user_sess_key; + if (user_sess_key->length) { + lm_sess_key->length = 8; + } + return NT_STATUS_OK; + } else { + DEBUG(3,("ntlm_password_check: NTLMv2 password check failed\n")); + } + } else if (nt_response->length == 24 && stored_nt) { + if (ntlm_auth) { + /* We have the NT MD4 hash challenge available - see if we can + use it (ie. does it exist in the smbpasswd file). + */ + DEBUG(4,("ntlm_password_check: Checking NT MD4 password\n")); + if (smb_pwd_check_ntlmv1(mem_ctx, + nt_response, + stored_nt->hash, challenge, + user_sess_key)) { + /* The LM session key for this response is not very secure, + so use it only if we otherwise allow LM authentication */ + + if (lanman_auth && stored_lanman) { + *lm_sess_key = data_blob_talloc(mem_ctx, stored_lanman->hash, 8); + } + return NT_STATUS_OK; + } else { + DEBUG(3,("ntlm_password_check: NT MD4 password check failed for user %s\n", + username)); + return NT_STATUS_WRONG_PASSWORD; + } + } else { + DEBUG(2,("ntlm_password_check: NTLMv1 passwords NOT PERMITTED for user %s\n", + username)); + /* no return, becouse we might pick up LMv2 in the LM field */ + } + } + + if (lm_response->length == 0) { + DEBUG(3,("ntlm_password_check: NEITHER LanMan nor NT password supplied for user %s\n", + username)); + return NT_STATUS_WRONG_PASSWORD; + } + + if (lm_response->length < 24) { + DEBUG(2,("ntlm_password_check: invalid LanMan password length (%lu) for user %s\n", + (unsigned long)nt_response->length, username)); + return NT_STATUS_WRONG_PASSWORD; + } + + if (!lanman_auth) { + DEBUG(3,("ntlm_password_check: Lanman passwords NOT PERMITTED for user %s\n", + username)); + } else if (!stored_lanman) { + DEBUG(3,("ntlm_password_check: NO LanMan password set for user %s (and no NT password supplied)\n", + username)); + } else if (strchr_m(username, '@')) { + DEBUG(3,("ntlm_password_check: NO LanMan password allowed for username@realm logins (user: %s)\n", + username)); + } else { + DEBUG(4,("ntlm_password_check: Checking LM password\n")); + if (smb_pwd_check_ntlmv1(mem_ctx, + lm_response, + stored_lanman->hash, challenge, + NULL)) { + /* The session key for this response is still very odd. + It not very secure, so use it only if we otherwise + allow LM authentication */ + + if (lanman_auth && stored_lanman) { + uint8_t first_8_lm_hash[16]; + memcpy(first_8_lm_hash, stored_lanman->hash, 8); + memset(first_8_lm_hash + 8, '\0', 8); + *user_sess_key = data_blob_talloc(mem_ctx, first_8_lm_hash, 16); + *lm_sess_key = data_blob_talloc(mem_ctx, stored_lanman->hash, 8); + } + return NT_STATUS_OK; + } + } + + if (!stored_nt) { + DEBUG(4,("ntlm_password_check: LM password check failed for user, no NT password %s\n",username)); + return NT_STATUS_WRONG_PASSWORD; + } + + /* This is for 'LMv2' authentication. almost NTLMv2 but limited to 24 bytes. + - related to Win9X, legacy NAS pass-though authentication + */ + DEBUG(4,("ntlm_password_check: Checking LMv2 password with domain %s\n", client_domain)); + if (smb_pwd_check_ntlmv2(mem_ctx, + lm_response, + stored_nt->hash, challenge, + client_username, + client_domain, + false, + &tmp_sess_key)) { + if (nt_response->length > 24) { + /* If NTLMv2 authentication has preceeded us + * (even if it failed), then use the session + * key from that. See the RPC-SAMLOGON + * torture test */ + smb_sess_key_ntlmv2(mem_ctx, + nt_response, + stored_nt->hash, challenge, + client_username, + client_domain, + false, + user_sess_key); + } else { + /* Otherwise, use the LMv2 session key */ + *user_sess_key = tmp_sess_key; + } + *lm_sess_key = *user_sess_key; + if (user_sess_key->length) { + lm_sess_key->length = 8; + } + return NT_STATUS_OK; + } + + DEBUG(4,("ntlm_password_check: Checking LMv2 password with upper-cased version of domain %s\n", client_domain)); + if (smb_pwd_check_ntlmv2(mem_ctx, + lm_response, + stored_nt->hash, challenge, + client_username, + client_domain, + true, + &tmp_sess_key)) { + if (nt_response->length > 24) { + /* If NTLMv2 authentication has preceeded us + * (even if it failed), then use the session + * key from that. See the RPC-SAMLOGON + * torture test */ + smb_sess_key_ntlmv2(mem_ctx, + nt_response, + stored_nt->hash, challenge, + client_username, + client_domain, + true, + user_sess_key); + } else { + /* Otherwise, use the LMv2 session key */ + *user_sess_key = tmp_sess_key; + } + *lm_sess_key = *user_sess_key; + if (user_sess_key->length) { + lm_sess_key->length = 8; + } + return NT_STATUS_OK; + } + + DEBUG(4,("ntlm_password_check: Checking LMv2 password without a domain\n")); + if (smb_pwd_check_ntlmv2(mem_ctx, + lm_response, + stored_nt->hash, challenge, + client_username, + "", + false, + &tmp_sess_key)) { + if (nt_response->length > 24) { + /* If NTLMv2 authentication has preceeded us + * (even if it failed), then use the session + * key from that. See the RPC-SAMLOGON + * torture test */ + smb_sess_key_ntlmv2(mem_ctx, + nt_response, + stored_nt->hash, challenge, + client_username, + "", + false, + user_sess_key); + } else { + /* Otherwise, use the LMv2 session key */ + *user_sess_key = tmp_sess_key; + } + *lm_sess_key = *user_sess_key; + if (user_sess_key->length) { + lm_sess_key->length = 8; + } + return NT_STATUS_OK; + } + + /* Apparently NT accepts NT responses in the LM field + - I think this is related to Win9X pass-though authentication + */ + DEBUG(4,("ntlm_password_check: Checking NT MD4 password in LM field\n")); + if (ntlm_auth) { + if (smb_pwd_check_ntlmv1(mem_ctx, + lm_response, + stored_nt->hash, challenge, + NULL)) { + /* The session key for this response is still very odd. + It not very secure, so use it only if we otherwise + allow LM authentication */ + + if (lanman_auth && stored_lanman) { + uint8_t first_8_lm_hash[16]; + memcpy(first_8_lm_hash, stored_lanman->hash, 8); + memset(first_8_lm_hash + 8, '\0', 8); + *user_sess_key = data_blob_talloc(mem_ctx, first_8_lm_hash, 16); + *lm_sess_key = data_blob_talloc(mem_ctx, stored_lanman->hash, 8); + } + return NT_STATUS_OK; + } + DEBUG(3,("ntlm_password_check: LM password, NT MD4 password in LM field and LMv2 failed for user %s\n",username)); + } else { + DEBUG(3,("ntlm_password_check: LM password and LMv2 failed for user %s, and NT MD4 password in LM field not permitted\n",username)); + } + + /* Try and match error codes */ + if (strchr_m(username, '@')) { + return NT_STATUS_NOT_FOUND; + } + return NT_STATUS_WRONG_PASSWORD; +} + diff --git a/libcli/auth/session.c b/libcli/auth/session.c new file mode 100644 index 0000000000..10c728662d --- /dev/null +++ b/libcli/auth/session.c @@ -0,0 +1,218 @@ +/* + Unix SMB/CIFS implementation. + + code to encrypt/decrypt data using the user session key + + Copyright (C) Andrew Tridgell 2004 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include "includes.h" +#include "libcli/auth/libcli_auth.h" + +/* + encrypt or decrypt a blob of data using the user session key + as used in lsa_SetSecret + + before calling, the out blob must be initialised to be the same size + as the in blob +*/ +void sess_crypt_blob(DATA_BLOB *out, const DATA_BLOB *in, const DATA_BLOB *session_key, + bool forward) +{ + int i, k; + + for (i=0,k=0; + ilength; + i += 8, k += 7) { + uint8_t bin[8], bout[8], key[7]; + + memset(bin, 0, 8); + memcpy(bin, &in->data[i], MIN(8, in->length-i)); + + if (k + 7 > session_key->length) { + k = (session_key->length - k); + } + memcpy(key, &session_key->data[k], 7); + + des_crypt56(bout, bin, key, forward?1:0); + + memcpy(&out->data[i], bout, MIN(8, in->length-i)); + } +} + + +/* + a convenient wrapper around sess_crypt_blob() for strings, using the LSA convention + + note that we round the length to a multiple of 8. This seems to be needed for + compatibility with windows + + caller should free using data_blob_free() +*/ +DATA_BLOB sess_encrypt_string(const char *str, const DATA_BLOB *session_key) +{ + DATA_BLOB ret, src; + int slen = strlen(str); + int dlen = (slen+7) & ~7; + + src = data_blob(NULL, 8+dlen); + if (!src.data) { + return data_blob(NULL, 0); + } + + ret = data_blob(NULL, 8+dlen); + if (!ret.data) { + data_blob_free(&src); + return data_blob(NULL, 0); + } + + SIVAL(src.data, 0, slen); + SIVAL(src.data, 4, 1); + memset(src.data+8, 0, dlen); + memcpy(src.data+8, str, slen); + + sess_crypt_blob(&ret, &src, session_key, true); + + data_blob_free(&src); + + return ret; +} + +/* + a convenient wrapper around sess_crypt_blob() for strings, using the LSA convention + + caller should free the returned string +*/ +char *sess_decrypt_string(TALLOC_CTX *mem_ctx, + DATA_BLOB *blob, const DATA_BLOB *session_key) +{ + DATA_BLOB out; + int slen; + char *ret; + + if (blob->length < 8) { + return NULL; + } + + out = data_blob_talloc(mem_ctx, NULL, blob->length); + if (!out.data) { + return NULL; + } + + sess_crypt_blob(&out, blob, session_key, false); + + if (IVAL(out.data, 4) != 1) { + DEBUG(0,("Unexpected revision number %d in session crypted string\n", + IVAL(out.data, 4))); + data_blob_free(&out); + return NULL; + } + + slen = IVAL(out.data, 0); + if (slen > blob->length - 8) { + DEBUG(0,("Invalid crypt length %d\n", slen)); + data_blob_free(&out); + return NULL; + } + + ret = talloc_strndup(mem_ctx, (const char *)(out.data+8), slen); + + data_blob_free(&out); + + DEBUG(0,("decrypted string '%s' of length %d\n", ret, slen)); + + return ret; +} + +/* + a convenient wrapper around sess_crypt_blob() for DATA_BLOBs, using the LSA convention + + note that we round the length to a multiple of 8. This seems to be needed for + compatibility with windows + + caller should free using data_blob_free() +*/ +DATA_BLOB sess_encrypt_blob(TALLOC_CTX *mem_ctx, DATA_BLOB *blob_in, const DATA_BLOB *session_key) +{ + DATA_BLOB ret, src; + int dlen = (blob_in->length+7) & ~7; + + src = data_blob_talloc(mem_ctx, NULL, 8+dlen); + if (!src.data) { + return data_blob(NULL, 0); + } + + ret = data_blob_talloc(mem_ctx, NULL, 8+dlen); + if (!ret.data) { + data_blob_free(&src); + return data_blob(NULL, 0); + } + + SIVAL(src.data, 0, blob_in->length); + SIVAL(src.data, 4, 1); + memset(src.data+8, 0, dlen); + memcpy(src.data+8, blob_in->data, blob_in->length); + + sess_crypt_blob(&ret, &src, session_key, true); + + data_blob_free(&src); + + return ret; +} + +/* + Decrypt a DATA_BLOB using the LSA convention +*/ +NTSTATUS sess_decrypt_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, const DATA_BLOB *session_key, + DATA_BLOB *ret) +{ + DATA_BLOB out; + int slen; + + if (blob->length < 8) { + DEBUG(0, ("Unexpected length %d in session crypted secret (BLOB)\n", + (int)blob->length)); + return NT_STATUS_INVALID_PARAMETER; + } + + out = data_blob_talloc(mem_ctx, NULL, blob->length); + if (!out.data) { + return NT_STATUS_NO_MEMORY; + } + + sess_crypt_blob(&out, blob, session_key, false); + + if (IVAL(out.data, 4) != 1) { + DEBUG(2,("Unexpected revision number %d in session crypted secret (BLOB)\n", + IVAL(out.data, 4))); + return NT_STATUS_UNKNOWN_REVISION; + } + + slen = IVAL(out.data, 0); + if (slen > blob->length - 8) { + DEBUG(0,("Invalid crypt length %d in session crypted secret (BLOB)\n", slen)); + return NT_STATUS_WRONG_PASSWORD; + } + + *ret = data_blob_talloc(mem_ctx, out.data+8, slen); + if (slen && !ret->data) { + return NT_STATUS_NO_MEMORY; + } + + data_blob_free(&out); + + return NT_STATUS_OK; +} diff --git a/libcli/auth/smbdes.c b/libcli/auth/smbdes.c new file mode 100644 index 0000000000..32e65e779d --- /dev/null +++ b/libcli/auth/smbdes.c @@ -0,0 +1,381 @@ +/* + Unix SMB/CIFS implementation. + + a partial implementation of DES designed for use in the + SMB authentication protocol + + Copyright (C) Andrew Tridgell 1998 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include "includes.h" +#include "libcli/auth/libcli_auth.h" + +/* NOTES: + + This code makes no attempt to be fast! In fact, it is a very + slow implementation + + This code is NOT a complete DES implementation. It implements only + the minimum necessary for SMB authentication, as used by all SMB + products (including every copy of Microsoft Windows95 ever sold) + + In particular, it can only do a unchained forward DES pass. This + means it is not possible to use this code for encryption/decryption + of data, instead it is only useful as a "hash" algorithm. + + There is no entry point into this code that allows normal DES operation. + + I believe this means that this code does not come under ITAR + regulations but this is NOT a legal opinion. If you are concerned + about the applicability of ITAR regulations to this code then you + should confirm it for yourself (and maybe let me know if you come + up with a different answer to the one above) +*/ + + +static const uint8_t perm1[56] = {57, 49, 41, 33, 25, 17, 9, + 1, 58, 50, 42, 34, 26, 18, + 10, 2, 59, 51, 43, 35, 27, + 19, 11, 3, 60, 52, 44, 36, + 63, 55, 47, 39, 31, 23, 15, + 7, 62, 54, 46, 38, 30, 22, + 14, 6, 61, 53, 45, 37, 29, + 21, 13, 5, 28, 20, 12, 4}; + +static const uint8_t perm2[48] = {14, 17, 11, 24, 1, 5, + 3, 28, 15, 6, 21, 10, + 23, 19, 12, 4, 26, 8, + 16, 7, 27, 20, 13, 2, + 41, 52, 31, 37, 47, 55, + 30, 40, 51, 45, 33, 48, + 44, 49, 39, 56, 34, 53, + 46, 42, 50, 36, 29, 32}; + +static const uint8_t perm3[64] = {58, 50, 42, 34, 26, 18, 10, 2, + 60, 52, 44, 36, 28, 20, 12, 4, + 62, 54, 46, 38, 30, 22, 14, 6, + 64, 56, 48, 40, 32, 24, 16, 8, + 57, 49, 41, 33, 25, 17, 9, 1, + 59, 51, 43, 35, 27, 19, 11, 3, + 61, 53, 45, 37, 29, 21, 13, 5, + 63, 55, 47, 39, 31, 23, 15, 7}; + +static const uint8_t perm4[48] = { 32, 1, 2, 3, 4, 5, + 4, 5, 6, 7, 8, 9, + 8, 9, 10, 11, 12, 13, + 12, 13, 14, 15, 16, 17, + 16, 17, 18, 19, 20, 21, + 20, 21, 22, 23, 24, 25, + 24, 25, 26, 27, 28, 29, + 28, 29, 30, 31, 32, 1}; + +static const uint8_t perm5[32] = { 16, 7, 20, 21, + 29, 12, 28, 17, + 1, 15, 23, 26, + 5, 18, 31, 10, + 2, 8, 24, 14, + 32, 27, 3, 9, + 19, 13, 30, 6, + 22, 11, 4, 25}; + + +static const uint8_t perm6[64] ={ 40, 8, 48, 16, 56, 24, 64, 32, + 39, 7, 47, 15, 55, 23, 63, 31, + 38, 6, 46, 14, 54, 22, 62, 30, + 37, 5, 45, 13, 53, 21, 61, 29, + 36, 4, 44, 12, 52, 20, 60, 28, + 35, 3, 43, 11, 51, 19, 59, 27, + 34, 2, 42, 10, 50, 18, 58, 26, + 33, 1, 41, 9, 49, 17, 57, 25}; + + +static const uint8_t sc[16] = {1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1}; + +static const uint8_t sbox[8][4][16] = { + {{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7}, + {0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8}, + {4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0}, + {15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13}}, + + {{15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10}, + {3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5}, + {0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15}, + {13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9}}, + + {{10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8}, + {13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1}, + {13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7}, + {1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12}}, + + {{7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15}, + {13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9}, + {10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4}, + {3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14}}, + + {{2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9}, + {14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6}, + {4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14}, + {11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3}}, + + {{12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11}, + {10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8}, + {9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6}, + {4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13}}, + + {{4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1}, + {13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6}, + {1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2}, + {6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12}}, + + {{13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7}, + {1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2}, + {7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8}, + {2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11}}}; + +static void permute(char *out, const char *in, const uint8_t *p, int n) +{ + int i; + for (i=0;i>1; + key[1] = ((str[0]&0x01)<<6) | (str[1]>>2); + key[2] = ((str[1]&0x03)<<5) | (str[2]>>3); + key[3] = ((str[2]&0x07)<<4) | (str[3]>>4); + key[4] = ((str[3]&0x0F)<<3) | (str[4]>>5); + key[5] = ((str[4]&0x1F)<<2) | (str[5]>>6); + key[6] = ((str[5]&0x3F)<<1) | (str[6]>>7); + key[7] = str[6]&0x7F; + for (i=0;i<8;i++) { + key[i] = (key[i]<<1); + } +} + +/* + basic des crypt using a 56 bit (7 byte) key +*/ +void des_crypt56(uint8_t out[8], const uint8_t in[8], const uint8_t key[7], int forw) +{ + int i; + char outb[64]; + char inb[64]; + char keyb[64]; + uint8_t key2[8]; + + str_to_key(key, key2); + + for (i=0;i<64;i++) { + inb[i] = (in[i/8] & (1<<(7-(i%8)))) ? 1 : 0; + keyb[i] = (key2[i/8] & (1<<(7-(i%8)))) ? 1 : 0; + outb[i] = 0; + } + + dohash(outb, inb, keyb, forw); + + for (i=0;i<8;i++) { + out[i] = 0; + } + + for (i=0;i<64;i++) { + if (outb[i]) + out[i/8] |= (1<<(7-(i%8))); + } +} + +void E_P16(const uint8_t *p14,uint8_t *p16) +{ + const uint8_t sp8[8] = {0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25}; + des_crypt56(p16, sp8, p14, 1); + des_crypt56(p16+8, sp8, p14+7, 1); +} + +void E_P24(const uint8_t *p21, const uint8_t *c8, uint8_t *p24) +{ + des_crypt56(p24, c8, p21, 1); + des_crypt56(p24+8, c8, p21+7, 1); + des_crypt56(p24+16, c8, p21+14, 1); +} + +void D_P16(const uint8_t *p14, const uint8_t *in, uint8_t *out) +{ + des_crypt56(out, in, p14, 0); + des_crypt56(out+8, in+8, p14+7, 0); +} + +void E_old_pw_hash( uint8_t *p14, const uint8_t *in, uint8_t *out) +{ + des_crypt56(out, in, p14, 1); + des_crypt56(out+8, in+8, p14+7, 1); +} + +/* des encryption with a 128 bit key */ +void des_crypt128(uint8_t out[8], const uint8_t in[8], const uint8_t key[16]) +{ + uint8_t buf[8]; + des_crypt56(buf, in, key, 1); + des_crypt56(out, buf, key+9, 1); +} + +/* des encryption with a 64 bit key */ +void des_crypt64(uint8_t out[8], const uint8_t in[8], const uint8_t key[8], int forw) +{ + uint8_t buf[8]; + uint8_t key2[8]; + ZERO_STRUCT(key2); + des_crypt56(buf, in, key, forw); + key2[0] = key[7]; + des_crypt56(out, buf, key2, forw); +} + +/* des encryption with a 112 bit (14 byte) key */ +void des_crypt112(uint8_t out[8], const uint8_t in[8], const uint8_t key[14], int forw) +{ + uint8_t buf[8]; + des_crypt56(buf, in, key, forw); + des_crypt56(out, buf, key+7, forw); +} + +/* des encryption of a 16 byte lump of data with a 112 bit key */ +void des_crypt112_16(uint8_t out[16], uint8_t in[16], const uint8_t key[14], int forw) +{ + des_crypt56(out, in, key, forw); + des_crypt56(out + 8, in + 8, key+7, forw); +} + +/* Decode a sam password hash into a password. The password hash is the + same method used to store passwords in the NT registry. The DES key + used is based on the RID of the user. */ +void sam_rid_crypt(uint_t rid, const uint8_t *in, uint8_t *out, int forw) +{ + uint8_t s[14]; + + s[0] = s[4] = s[8] = s[12] = (uint8_t)(rid & 0xFF); + s[1] = s[5] = s[9] = s[13] = (uint8_t)((rid >> 8) & 0xFF); + s[2] = s[6] = s[10] = (uint8_t)((rid >> 16) & 0xFF); + s[3] = s[7] = s[11] = (uint8_t)((rid >> 24) & 0xFF); + + des_crypt56(out, in, s, forw); + des_crypt56(out+8, in+8, s+7, forw); +} diff --git a/libcli/auth/smbencrypt.c b/libcli/auth/smbencrypt.c new file mode 100644 index 0000000000..c6118c6568 --- /dev/null +++ b/libcli/auth/smbencrypt.c @@ -0,0 +1,595 @@ +/* + Unix SMB/CIFS implementation. + SMB parameters and setup + Copyright (C) Andrew Tridgell 1992-1998 + Modified by Jeremy Allison 1995. + Copyright (C) Jeremy Allison 1995-2000. + Copyright (C) Luke Kennethc Casson Leighton 1996-2000. + Copyright (C) Andrew Bartlett 2002-2003 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include "includes.h" +#include "system/time.h" +#include "auth/ntlmssp/ntlmssp.h" +#include "auth/ntlmssp/msrpc_parse.h" +#include "../lib/crypto/crypto.h" +#include "libcli/auth/libcli_auth.h" + +/* + This implements the X/Open SMB password encryption + It takes a password ('unix' string), a 8 byte "crypt key" + and puts 24 bytes of encrypted password into p24 + + Returns false if password must have been truncated to create LM hash +*/ +bool SMBencrypt(const char *passwd, const uint8_t *c8, uint8_t p24[24]) +{ + bool ret; + uint8_t p21[21]; + + memset(p21,'\0',21); + ret = E_deshash(passwd, p21); + + SMBOWFencrypt(p21, c8, p24); + +#ifdef DEBUG_PASSWORD + DEBUG(100,("SMBencrypt: lm#, challenge, response\n")); + dump_data(100, p21, 16); + dump_data(100, c8, 8); + dump_data(100, p24, 24); +#endif + + return ret; +} + +/** + * Creates the MD4 Hash of the users password in NT UNICODE. + * @param passwd password in 'unix' charset. + * @param p16 return password hashed with md4, caller allocated 16 byte buffer + */ + +bool E_md4hash(const char *passwd, uint8_t p16[16]) +{ + size_t len; + smb_ucs2_t *wpwd; + bool ret; + + ret = push_ucs2_talloc(NULL, &wpwd, passwd, &len); + if (!ret || len < 2) { + /* We don't want to return fixed data, as most callers + * don't check */ + mdfour(p16, (const uint8_t *)passwd, strlen(passwd)); + return false; + } + + len -= 2; + mdfour(p16, (const uint8_t *)wpwd, len); + + talloc_free(wpwd); + return true; +} + +/** + * Creates the DES forward-only Hash of the users password in DOS ASCII charset + * @param passwd password in 'unix' charset. + * @param p16 return password hashed with DES, caller allocated 16 byte buffer + * @return false if password was > 14 characters, and therefore may be incorrect, otherwise true + * @note p16 is filled in regardless + */ + +bool E_deshash(const char *passwd, uint8_t p16[16]) +{ + bool ret = true; + char dospwd[256]; + ZERO_STRUCT(dospwd); + + /* Password must be converted to DOS charset - null terminated, uppercase. */ + push_string(dospwd, passwd, sizeof(dospwd), STR_ASCII|STR_UPPER|STR_TERMINATE); + + /* Only the first 14 chars are considered, password need not be null terminated. */ + E_P16((const uint8_t *)dospwd, p16); + + if (strlen(dospwd) > 14) { + ret = false; + } + + ZERO_STRUCT(dospwd); + + return ret; +} + +/* Does both the NTLMv2 owfs of a user's password */ +bool ntv2_owf_gen(const uint8_t owf[16], + const char *user_in, const char *domain_in, + bool upper_case_domain, /* Transform the domain into UPPER case */ + uint8_t kr_buf[16]) +{ + smb_ucs2_t *user; + smb_ucs2_t *domain; + size_t user_byte_len; + size_t domain_byte_len; + bool ret; + + HMACMD5Context ctx; + TALLOC_CTX *mem_ctx = talloc_init("ntv2_owf_gen for %s\\%s", domain_in, user_in); + + if (!mem_ctx) { + return false; + } + + if (!user_in) { + user_in = ""; + } + + if (!domain_in) { + domain_in = ""; + } + + user_in = strupper_talloc(mem_ctx, user_in); + if (user_in == NULL) { + talloc_free(mem_ctx); + return false; + } + + if (upper_case_domain) { + domain_in = strupper_talloc(mem_ctx, domain_in); + if (domain_in == NULL) { + talloc_free(mem_ctx); + return false; + } + } + + ret = push_ucs2_talloc(mem_ctx, &user, user_in, &user_byte_len ); + if (!ret) { + DEBUG(0, ("push_uss2_talloc() for user returned -1 (probably talloc() failure)\n")); + talloc_free(mem_ctx); + return false; + } + + ret = push_ucs2_talloc(mem_ctx, &domain, domain_in, &domain_byte_len); + if (!ret) { + DEBUG(0, ("push_ucs2_talloc() for domain returned -1 (probably talloc() failure)\n")); + talloc_free(mem_ctx); + return false; + } + + SMB_ASSERT(user_byte_len >= 2); + SMB_ASSERT(domain_byte_len >= 2); + + /* We don't want null termination */ + user_byte_len = user_byte_len - 2; + domain_byte_len = domain_byte_len - 2; + + hmac_md5_init_limK_to_64(owf, 16, &ctx); + hmac_md5_update((const void *)user, user_byte_len, &ctx); + hmac_md5_update((const void *)domain, domain_byte_len, &ctx); + hmac_md5_final(kr_buf, &ctx); + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("ntv2_owf_gen: user, domain, owfkey, kr\n")); + dump_data(100, (const void *)user, user_byte_len); + dump_data(100, (const void *)domain, domain_byte_len); + dump_data(100, owf, 16); + dump_data(100, kr_buf, 16); +#endif + + talloc_free(mem_ctx); + return true; +} + +/* Does the des encryption from the NT or LM MD4 hash. */ +void SMBOWFencrypt(const uint8_t passwd[16], const uint8_t *c8, uint8_t p24[24]) +{ + uint8_t p21[21]; + + ZERO_STRUCT(p21); + + memcpy(p21, passwd, 16); + E_P24(p21, c8, p24); +} + +/* Does the NT MD4 hash then des encryption. */ + +void SMBNTencrypt(const char *passwd, uint8_t *c8, uint8_t *p24) +{ + uint8_t p21[21]; + + memset(p21,'\0',21); + + E_md4hash(passwd, p21); + SMBOWFencrypt(p21, c8, p24); + +#ifdef DEBUG_PASSWORD + DEBUG(100,("SMBNTencrypt: nt#, challenge, response\n")); + dump_data(100, p21, 16); + dump_data(100, c8, 8); + dump_data(100, p24, 24); +#endif +} + +/* Does the md5 encryption from the Key Response for NTLMv2. */ +void SMBOWFencrypt_ntv2(const uint8_t kr[16], + const DATA_BLOB *srv_chal, + const DATA_BLOB *smbcli_chal, + uint8_t resp_buf[16]) +{ + HMACMD5Context ctx; + + hmac_md5_init_limK_to_64(kr, 16, &ctx); + hmac_md5_update(srv_chal->data, srv_chal->length, &ctx); + hmac_md5_update(smbcli_chal->data, smbcli_chal->length, &ctx); + hmac_md5_final(resp_buf, &ctx); + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("SMBOWFencrypt_ntv2: srv_chal, smbcli_chal, resp_buf\n")); + dump_data(100, srv_chal->data, srv_chal->length); + dump_data(100, smbcli_chal->data, smbcli_chal->length); + dump_data(100, resp_buf, 16); +#endif +} + +void SMBsesskeygen_ntv2(const uint8_t kr[16], + const uint8_t * nt_resp, uint8_t sess_key[16]) +{ + /* a very nice, 128 bit, variable session key */ + + HMACMD5Context ctx; + + hmac_md5_init_limK_to_64(kr, 16, &ctx); + hmac_md5_update(nt_resp, 16, &ctx); + hmac_md5_final((uint8_t *)sess_key, &ctx); + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("SMBsesskeygen_ntv2:\n")); + dump_data(100, sess_key, 16); +#endif +} + +void SMBsesskeygen_ntv1(const uint8_t kr[16], uint8_t sess_key[16]) +{ + /* yes, this session key does not change - yes, this + is a problem - but it is 128 bits */ + + mdfour((uint8_t *)sess_key, kr, 16); + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("SMBsesskeygen_ntv1:\n")); + dump_data(100, sess_key, 16); +#endif +} + +void SMBsesskeygen_lm_sess_key(const uint8_t lm_hash[16], + const uint8_t lm_resp[24], /* only uses 8 */ + uint8_t sess_key[16]) +{ + /* Calculate the LM session key (effective length 40 bits, + but changes with each session) */ + uint8_t p24[24]; + uint8_t partial_lm_hash[14]; + + memcpy(partial_lm_hash, lm_hash, 8); + memset(partial_lm_hash + 8, 0xbd, 6); + + des_crypt56(p24, lm_resp, partial_lm_hash, 1); + des_crypt56(p24+8, lm_resp, partial_lm_hash + 7, 1); + + memcpy(sess_key, p24, 16); + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("SMBsesskeygen_lm_sess_key: \n")); + dump_data(100, sess_key, 16); +#endif +} + +DATA_BLOB NTLMv2_generate_names_blob(TALLOC_CTX *mem_ctx, + const char *hostname, + const char *domain) +{ + DATA_BLOB names_blob = data_blob_talloc(mem_ctx, NULL, 0); + + msrpc_gen(mem_ctx, &names_blob, + "aaa", + NTLMSSP_NAME_TYPE_DOMAIN, domain, + NTLMSSP_NAME_TYPE_SERVER, hostname, + 0, ""); + return names_blob; +} + +static DATA_BLOB NTLMv2_generate_client_data(TALLOC_CTX *mem_ctx, const DATA_BLOB *names_blob) +{ + uint8_t client_chal[8]; + DATA_BLOB response = data_blob(NULL, 0); + uint8_t long_date[8]; + NTTIME nttime; + + unix_to_nt_time(&nttime, time(NULL)); + + generate_random_buffer(client_chal, sizeof(client_chal)); + + push_nttime(long_date, 0, nttime); + + /* See http://www.ubiqx.org/cifs/SMB.html#SMB.8.5 */ + + msrpc_gen(mem_ctx, &response, "ddbbdb", + 0x00000101, /* Header */ + 0, /* 'Reserved' */ + long_date, 8, /* Timestamp */ + client_chal, 8, /* client challenge */ + 0, /* Unknown */ + names_blob->data, names_blob->length); /* End of name list */ + + return response; +} + +static DATA_BLOB NTLMv2_generate_response(TALLOC_CTX *out_mem_ctx, + const uint8_t ntlm_v2_hash[16], + const DATA_BLOB *server_chal, + const DATA_BLOB *names_blob) +{ + uint8_t ntlmv2_response[16]; + DATA_BLOB ntlmv2_client_data; + DATA_BLOB final_response; + + TALLOC_CTX *mem_ctx = talloc_named(out_mem_ctx, 0, + "NTLMv2_generate_response internal context"); + + if (!mem_ctx) { + return data_blob(NULL, 0); + } + + /* NTLMv2 */ + /* generate some data to pass into the response function - including + the hostname and domain name of the server */ + ntlmv2_client_data = NTLMv2_generate_client_data(mem_ctx, names_blob); + + /* Given that data, and the challenge from the server, generate a response */ + SMBOWFencrypt_ntv2(ntlm_v2_hash, server_chal, &ntlmv2_client_data, ntlmv2_response); + + final_response = data_blob_talloc(out_mem_ctx, NULL, sizeof(ntlmv2_response) + ntlmv2_client_data.length); + + memcpy(final_response.data, ntlmv2_response, sizeof(ntlmv2_response)); + + memcpy(final_response.data+sizeof(ntlmv2_response), + ntlmv2_client_data.data, ntlmv2_client_data.length); + + talloc_free(mem_ctx); + + return final_response; +} + +static DATA_BLOB LMv2_generate_response(TALLOC_CTX *mem_ctx, + const uint8_t ntlm_v2_hash[16], + const DATA_BLOB *server_chal) +{ + uint8_t lmv2_response[16]; + DATA_BLOB lmv2_client_data = data_blob_talloc(mem_ctx, NULL, 8); + DATA_BLOB final_response = data_blob_talloc(mem_ctx, NULL,24); + + /* LMv2 */ + /* client-supplied random data */ + generate_random_buffer(lmv2_client_data.data, lmv2_client_data.length); + + /* Given that data, and the challenge from the server, generate a response */ + SMBOWFencrypt_ntv2(ntlm_v2_hash, server_chal, &lmv2_client_data, lmv2_response); + memcpy(final_response.data, lmv2_response, sizeof(lmv2_response)); + + /* after the first 16 bytes is the random data we generated above, + so the server can verify us with it */ + memcpy(final_response.data+sizeof(lmv2_response), + lmv2_client_data.data, lmv2_client_data.length); + + data_blob_free(&lmv2_client_data); + + return final_response; +} + +bool SMBNTLMv2encrypt_hash(TALLOC_CTX *mem_ctx, + const char *user, const char *domain, const uint8_t nt_hash[16], + const DATA_BLOB *server_chal, + const DATA_BLOB *names_blob, + DATA_BLOB *lm_response, DATA_BLOB *nt_response, + DATA_BLOB *lm_session_key, DATA_BLOB *user_session_key) +{ + uint8_t ntlm_v2_hash[16]; + + /* We don't use the NT# directly. Instead we use it mashed up with + the username and domain. + This prevents username swapping during the auth exchange + */ + if (!ntv2_owf_gen(nt_hash, user, domain, true, ntlm_v2_hash)) { + return false; + } + + if (nt_response) { + *nt_response = NTLMv2_generate_response(mem_ctx, + ntlm_v2_hash, server_chal, + names_blob); + if (user_session_key) { + *user_session_key = data_blob_talloc(mem_ctx, NULL, 16); + + /* The NTLMv2 calculations also provide a session key, for signing etc later */ + /* use only the first 16 bytes of nt_response for session key */ + SMBsesskeygen_ntv2(ntlm_v2_hash, nt_response->data, user_session_key->data); + } + } + + /* LMv2 */ + + if (lm_response) { + *lm_response = LMv2_generate_response(mem_ctx, + ntlm_v2_hash, server_chal); + if (lm_session_key) { + *lm_session_key = data_blob_talloc(mem_ctx, NULL, 16); + + /* The NTLMv2 calculations also provide a session key, for signing etc later */ + /* use only the first 16 bytes of lm_response for session key */ + SMBsesskeygen_ntv2(ntlm_v2_hash, lm_response->data, lm_session_key->data); + } + } + + return true; +} + +bool SMBNTLMv2encrypt(TALLOC_CTX *mem_ctx, + const char *user, const char *domain, + const char *password, + const DATA_BLOB *server_chal, + const DATA_BLOB *names_blob, + DATA_BLOB *lm_response, DATA_BLOB *nt_response, + DATA_BLOB *lm_session_key, DATA_BLOB *user_session_key) +{ + uint8_t nt_hash[16]; + E_md4hash(password, nt_hash); + + return SMBNTLMv2encrypt_hash(mem_ctx, + user, domain, nt_hash, server_chal, names_blob, + lm_response, nt_response, lm_session_key, user_session_key); +} + +/*********************************************************** + encode a password buffer with a unicode password. The buffer + is filled with random data to make it harder to attack. +************************************************************/ +bool encode_pw_buffer(uint8_t buffer[516], const char *password, int string_flags) +{ + uint8_t new_pw[512]; + size_t new_pw_len; + + /* the incoming buffer can be any alignment. */ + string_flags |= STR_NOALIGN; + + new_pw_len = push_string(new_pw, + password, + sizeof(new_pw), string_flags); + + memcpy(&buffer[512 - new_pw_len], new_pw, new_pw_len); + + generate_random_buffer(buffer, 512 - new_pw_len); + + /* + * The length of the new password is in the last 4 bytes of + * the data buffer. + */ + SIVAL(buffer, 512, new_pw_len); + ZERO_STRUCT(new_pw); + return true; +} + + +/*********************************************************** + decode a password buffer + *new_pw_len is the length in bytes of the possibly mulitbyte + returned password including termination. +************************************************************/ +bool decode_pw_buffer(uint8_t in_buffer[516], char *new_pwrd, + int new_pwrd_size, int string_flags) +{ + int byte_len=0; + ssize_t converted_pw_len; + + /* the incoming buffer can be any alignment. */ + string_flags |= STR_NOALIGN; + + /* + Warning !!! : This function is called from some rpc call. + The password IN the buffer may be a UNICODE string. + The password IN new_pwrd is an ASCII string + If you reuse that code somewhere else check first. + */ + + /* The length of the new password is in the last 4 bytes of the data buffer. */ + + byte_len = IVAL(in_buffer, 512); + +#ifdef DEBUG_PASSWORD + dump_data(100, in_buffer, 516); +#endif + + /* Password cannot be longer than the size of the password buffer */ + if ( (byte_len < 0) || (byte_len > 512)) { + return false; + } + + /* decode into the return buffer. Buffer length supplied */ + converted_pw_len = pull_string(new_pwrd, &in_buffer[512 - byte_len], new_pwrd_size, + byte_len, string_flags); + + if (converted_pw_len == -1) { + return false; + } + +#ifdef DEBUG_PASSWORD + DEBUG(100,("decode_pw_buffer: new_pwrd: ")); + dump_data(100, (const uint8_t *)new_pwrd, converted_pw_len); + DEBUG(100,("multibyte len:%d\n", (int)converted_pw_len)); + DEBUG(100,("original char len:%d\n", byte_len/2)); +#endif + + return true; +} + +/*********************************************************** + encode a password buffer with an already unicode password. The + rest of the buffer is filled with random data to make it harder to attack. +************************************************************/ +bool set_pw_in_buffer(uint8_t buffer[516], DATA_BLOB *password) +{ + if (password->length > 512) { + return false; + } + + memcpy(&buffer[512 - password->length], password->data, password->length); + + generate_random_buffer(buffer, 512 - password->length); + + /* + * The length of the new password is in the last 4 bytes of + * the data buffer. + */ + SIVAL(buffer, 512, password->length); + return true; +} + +/*********************************************************** + decode a password buffer + *new_pw_size is the length in bytes of the extracted unicode password +************************************************************/ +bool extract_pw_from_buffer(TALLOC_CTX *mem_ctx, + uint8_t in_buffer[516], DATA_BLOB *new_pass) +{ + int byte_len=0; + + /* The length of the new password is in the last 4 bytes of the data buffer. */ + + byte_len = IVAL(in_buffer, 512); + +#ifdef DEBUG_PASSWORD + dump_data(100, in_buffer, 516); +#endif + + /* Password cannot be longer than the size of the password buffer */ + if ( (byte_len < 0) || (byte_len > 512)) { + return false; + } + + *new_pass = data_blob_talloc(mem_ctx, &in_buffer[512 - byte_len], byte_len); + + if (!new_pass->data) { + return false; + } + + return true; +} diff --git a/source4/auth/ntlm/ntlm_check.c b/source4/auth/ntlm/ntlm_check.c deleted file mode 100644 index 0805b1b043..0000000000 --- a/source4/auth/ntlm/ntlm_check.c +++ /dev/null @@ -1,603 +0,0 @@ -/* - Unix SMB/CIFS implementation. - Password and authentication handling - Copyright (C) Andrew Bartlett 2001-2004 - Copyright (C) Gerald Carter 2003 - Copyright (C) Luke Kenneth Casson Leighton 1996-2000 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -#include "includes.h" -#include "../lib/crypto/crypto.h" -#include "librpc/gen_ndr/netlogon.h" -#include "libcli/auth/libcli_auth.h" -#include "auth/ntlm/ntlm_check.h" - -/**************************************************************************** - Core of smb password checking routine. -****************************************************************************/ - -static bool smb_pwd_check_ntlmv1(TALLOC_CTX *mem_ctx, - const DATA_BLOB *nt_response, - const uint8_t *part_passwd, - const DATA_BLOB *sec_blob, - DATA_BLOB *user_sess_key) -{ - /* Finish the encryption of part_passwd. */ - uint8_t p24[24]; - - if (part_passwd == NULL) { - DEBUG(10,("No password set - DISALLOWING access\n")); - /* No password set - always false ! */ - return false; - } - - if (sec_blob->length != 8) { - DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect challenge size (%lu)\n", - (unsigned long)sec_blob->length)); - return false; - } - - if (nt_response->length != 24) { - DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect password length (%lu)\n", - (unsigned long)nt_response->length)); - return false; - } - - SMBOWFencrypt(part_passwd, sec_blob->data, p24); - -#if DEBUG_PASSWORD - DEBUG(100,("Part password (P16) was |\n")); - dump_data(100, part_passwd, 16); - DEBUGADD(100,("Password from client was |\n")); - dump_data(100, nt_response->data, nt_response->length); - DEBUGADD(100,("Given challenge was |\n")); - dump_data(100, sec_blob->data, sec_blob->length); - DEBUGADD(100,("Value from encryption was |\n")); - dump_data(100, p24, 24); -#endif - if (memcmp(p24, nt_response->data, 24) == 0) { - if (user_sess_key != NULL) { - *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16); - SMBsesskeygen_ntv1(part_passwd, user_sess_key->data); - } - return true; - } - return false; -} - -/**************************************************************************** - Core of smb password checking routine. (NTLMv2, LMv2) - Note: The same code works with both NTLMv2 and LMv2. -****************************************************************************/ - -static bool smb_pwd_check_ntlmv2(TALLOC_CTX *mem_ctx, - const DATA_BLOB *ntv2_response, - const uint8_t *part_passwd, - const DATA_BLOB *sec_blob, - const char *user, const char *domain, - bool upper_case_domain, /* should the domain be transformed into upper case? */ - DATA_BLOB *user_sess_key) -{ - /* Finish the encryption of part_passwd. */ - uint8_t kr[16]; - uint8_t value_from_encryption[16]; - DATA_BLOB client_key_data; - - if (part_passwd == NULL) { - DEBUG(10,("No password set - DISALLOWING access\n")); - /* No password set - always false */ - return false; - } - - if (sec_blob->length != 8) { - DEBUG(0, ("smb_pwd_check_ntlmv2: incorrect challenge size (%lu)\n", - (unsigned long)sec_blob->length)); - return false; - } - - if (ntv2_response->length < 24) { - /* We MUST have more than 16 bytes, or the stuff below will go - crazy. No known implementation sends less than the 24 bytes - for LMv2, let alone NTLMv2. */ - DEBUG(0, ("smb_pwd_check_ntlmv2: incorrect password length (%lu)\n", - (unsigned long)ntv2_response->length)); - return false; - } - - client_key_data = data_blob_talloc(mem_ctx, ntv2_response->data+16, ntv2_response->length-16); - /* - todo: should we be checking this for anything? We can't for LMv2, - but for NTLMv2 it is meant to contain the current time etc. - */ - - if (!ntv2_owf_gen(part_passwd, user, domain, upper_case_domain, kr)) { - return false; - } - - SMBOWFencrypt_ntv2(kr, sec_blob, &client_key_data, value_from_encryption); - -#if DEBUG_PASSWORD - DEBUG(100,("Part password (P16) was |\n")); - dump_data(100, part_passwd, 16); - DEBUGADD(100,("Password from client was |\n")); - dump_data(100, ntv2_response->data, ntv2_response->length); - DEBUGADD(100,("Variable data from client was |\n")); - dump_data(100, client_key_data.data, client_key_data.length); - DEBUGADD(100,("Given challenge was |\n")); - dump_data(100, sec_blob->data, sec_blob->length); - DEBUGADD(100,("Value from encryption was |\n")); - dump_data(100, value_from_encryption, 16); -#endif - data_blob_clear_free(&client_key_data); - if (memcmp(value_from_encryption, ntv2_response->data, 16) == 0) { - if (user_sess_key != NULL) { - *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16); - SMBsesskeygen_ntv2(kr, value_from_encryption, user_sess_key->data); - } - return true; - } - return false; -} - -/**************************************************************************** - Core of smb password checking routine. (NTLMv2, LMv2) - Note: The same code works with both NTLMv2 and LMv2. -****************************************************************************/ - -static bool smb_sess_key_ntlmv2(TALLOC_CTX *mem_ctx, - const DATA_BLOB *ntv2_response, - const uint8_t *part_passwd, - const DATA_BLOB *sec_blob, - const char *user, const char *domain, - bool upper_case_domain, /* should the domain be transformed into upper case? */ - DATA_BLOB *user_sess_key) -{ - /* Finish the encryption of part_passwd. */ - uint8_t kr[16]; - uint8_t value_from_encryption[16]; - DATA_BLOB client_key_data; - - if (part_passwd == NULL) { - DEBUG(10,("No password set - DISALLOWING access\n")); - /* No password set - always false */ - return false; - } - - if (sec_blob->length != 8) { - DEBUG(0, ("smb_sess_key_ntlmv2: incorrect challenge size (%lu)\n", - (unsigned long)sec_blob->length)); - return false; - } - - if (ntv2_response->length < 24) { - /* We MUST have more than 16 bytes, or the stuff below will go - crazy. No known implementation sends less than the 24 bytes - for LMv2, let alone NTLMv2. */ - DEBUG(0, ("smb_sess_key_ntlmv2: incorrect password length (%lu)\n", - (unsigned long)ntv2_response->length)); - return false; - } - - client_key_data = data_blob_talloc(mem_ctx, ntv2_response->data+16, ntv2_response->length-16); - - if (!ntv2_owf_gen(part_passwd, user, domain, upper_case_domain, kr)) { - return false; - } - - SMBOWFencrypt_ntv2(kr, sec_blob, &client_key_data, value_from_encryption); - *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16); - SMBsesskeygen_ntv2(kr, value_from_encryption, user_sess_key->data); - return true; -} - -/** - * Compare password hashes against those from the SAM - * - * @param mem_ctx talloc context - * @param client_lanman LANMAN password hash, as supplied by the client - * @param client_nt NT (MD4) password hash, as supplied by the client - * @param username internal Samba username, for log messages - * @param client_username username the client used - * @param client_domain domain name the client used (may be mapped) - * @param stored_lanman LANMAN password hash, as stored on the SAM - * @param stored_nt NT (MD4) password hash, as stored on the SAM - * @param user_sess_key User session key - * @param lm_sess_key LM session key (first 8 bytes of the LM hash) - */ - -NTSTATUS hash_password_check(TALLOC_CTX *mem_ctx, - bool lanman_auth, - const struct samr_Password *client_lanman, - const struct samr_Password *client_nt, - const char *username, - const struct samr_Password *stored_lanman, - const struct samr_Password *stored_nt) -{ - if (stored_nt == NULL) { - DEBUG(3,("ntlm_password_check: NO NT password stored for user %s.\n", - username)); - } - - if (client_nt && stored_nt) { - if (memcmp(client_nt->hash, stored_nt->hash, sizeof(stored_nt->hash)) == 0) { - return NT_STATUS_OK; - } else { - DEBUG(3,("ntlm_password_check: Interactive logon: NT password check failed for user %s\n", - username)); - return NT_STATUS_WRONG_PASSWORD; - } - - } else if (client_lanman && stored_lanman) { - if (!lanman_auth) { - DEBUG(3,("ntlm_password_check: Interactive logon: only LANMAN password supplied for user %s, and LM passwords are disabled!\n", - username)); - return NT_STATUS_WRONG_PASSWORD; - } - if (strchr_m(username, '@')) { - return NT_STATUS_NOT_FOUND; - } - - if (memcmp(client_lanman->hash, stored_lanman->hash, sizeof(stored_lanman->hash)) == 0) { - return NT_STATUS_OK; - } else { - DEBUG(3,("ntlm_password_check: Interactive logon: LANMAN password check failed for user %s\n", - username)); - return NT_STATUS_WRONG_PASSWORD; - } - } - if (strchr_m(username, '@')) { - return NT_STATUS_NOT_FOUND; - } - return NT_STATUS_WRONG_PASSWORD; -} - -/** - * Check a challenge-response password against the value of the NT or - * LM password hash. - * - * @param mem_ctx talloc context - * @param challenge 8-byte challenge. If all zero, forces plaintext comparison - * @param nt_response 'unicode' NT response to the challenge, or unicode password - * @param lm_response ASCII or LANMAN response to the challenge, or password in DOS code page - * @param username internal Samba username, for log messages - * @param client_username username the client used - * @param client_domain domain name the client used (may be mapped) - * @param stored_lanman LANMAN ASCII password from our passdb or similar - * @param stored_nt MD4 unicode password from our passdb or similar - * @param user_sess_key User session key - * @param lm_sess_key LM session key (first 8 bytes of the LM hash) - */ - -NTSTATUS ntlm_password_check(TALLOC_CTX *mem_ctx, - bool lanman_auth, - bool ntlm_auth, - uint32_t logon_parameters, - const DATA_BLOB *challenge, - const DATA_BLOB *lm_response, - const DATA_BLOB *nt_response, - const char *username, - const char *client_username, - const char *client_domain, - const struct samr_Password *stored_lanman, - const struct samr_Password *stored_nt, - DATA_BLOB *user_sess_key, - DATA_BLOB *lm_sess_key) -{ - const static uint8_t zeros[8]; - DATA_BLOB tmp_sess_key; - - if (stored_nt == NULL) { - DEBUG(3,("ntlm_password_check: NO NT password stored for user %s.\n", - username)); - } - - *lm_sess_key = data_blob(NULL, 0); - *user_sess_key = data_blob(NULL, 0); - - /* Check for cleartext netlogon. Used by Exchange 5.5. */ - if ((logon_parameters & MSV1_0_CLEARTEXT_PASSWORD_ALLOWED) - && challenge->length == sizeof(zeros) - && (memcmp(challenge->data, zeros, challenge->length) == 0 )) { - struct samr_Password client_nt; - struct samr_Password client_lm; - char *unix_pw = NULL; - bool lm_ok; - - DEBUG(4,("ntlm_password_check: checking plaintext passwords for user %s\n", - username)); - mdfour(client_nt.hash, nt_response->data, nt_response->length); - - if (lm_response->length && - (convert_string_talloc(mem_ctx, CH_DOS, CH_UNIX, - lm_response->data, lm_response->length, - (void **)&unix_pw, NULL, false))) { - if (E_deshash(unix_pw, client_lm.hash)) { - lm_ok = true; - } else { - lm_ok = false; - } - } else { - lm_ok = false; - } - return hash_password_check(mem_ctx, - lanman_auth, - lm_ok ? &client_lm : NULL, - nt_response->length ? &client_nt : NULL, - username, - stored_lanman, stored_nt); - } - - if (nt_response->length != 0 && nt_response->length < 24) { - DEBUG(2,("ntlm_password_check: invalid NT password length (%lu) for user %s\n", - (unsigned long)nt_response->length, username)); - } - - if (nt_response->length > 24 && stored_nt) { - /* We have the NT MD4 hash challenge available - see if we can - use it - */ - DEBUG(4,("ntlm_password_check: Checking NTLMv2 password with domain [%s]\n", client_domain)); - if (smb_pwd_check_ntlmv2(mem_ctx, - nt_response, - stored_nt->hash, challenge, - client_username, - client_domain, - false, - user_sess_key)) { - *lm_sess_key = *user_sess_key; - if (user_sess_key->length) { - lm_sess_key->length = 8; - } - return NT_STATUS_OK; - } - - DEBUG(4,("ntlm_password_check: Checking NTLMv2 password with uppercased version of domain [%s]\n", client_domain)); - if (smb_pwd_check_ntlmv2(mem_ctx, - nt_response, - stored_nt->hash, challenge, - client_username, - client_domain, - true, - user_sess_key)) { - *lm_sess_key = *user_sess_key; - if (user_sess_key->length) { - lm_sess_key->length = 8; - } - return NT_STATUS_OK; - } - - DEBUG(4,("ntlm_password_check: Checking NTLMv2 password without a domain\n")); - if (smb_pwd_check_ntlmv2(mem_ctx, - nt_response, - stored_nt->hash, challenge, - client_username, - "", - false, - user_sess_key)) { - *lm_sess_key = *user_sess_key; - if (user_sess_key->length) { - lm_sess_key->length = 8; - } - return NT_STATUS_OK; - } else { - DEBUG(3,("ntlm_password_check: NTLMv2 password check failed\n")); - } - } else if (nt_response->length == 24 && stored_nt) { - if (ntlm_auth) { - /* We have the NT MD4 hash challenge available - see if we can - use it (ie. does it exist in the smbpasswd file). - */ - DEBUG(4,("ntlm_password_check: Checking NT MD4 password\n")); - if (smb_pwd_check_ntlmv1(mem_ctx, - nt_response, - stored_nt->hash, challenge, - user_sess_key)) { - /* The LM session key for this response is not very secure, - so use it only if we otherwise allow LM authentication */ - - if (lanman_auth && stored_lanman) { - *lm_sess_key = data_blob_talloc(mem_ctx, stored_lanman->hash, 8); - } - return NT_STATUS_OK; - } else { - DEBUG(3,("ntlm_password_check: NT MD4 password check failed for user %s\n", - username)); - return NT_STATUS_WRONG_PASSWORD; - } - } else { - DEBUG(2,("ntlm_password_check: NTLMv1 passwords NOT PERMITTED for user %s\n", - username)); - /* no return, becouse we might pick up LMv2 in the LM field */ - } - } - - if (lm_response->length == 0) { - DEBUG(3,("ntlm_password_check: NEITHER LanMan nor NT password supplied for user %s\n", - username)); - return NT_STATUS_WRONG_PASSWORD; - } - - if (lm_response->length < 24) { - DEBUG(2,("ntlm_password_check: invalid LanMan password length (%lu) for user %s\n", - (unsigned long)nt_response->length, username)); - return NT_STATUS_WRONG_PASSWORD; - } - - if (!lanman_auth) { - DEBUG(3,("ntlm_password_check: Lanman passwords NOT PERMITTED for user %s\n", - username)); - } else if (!stored_lanman) { - DEBUG(3,("ntlm_password_check: NO LanMan password set for user %s (and no NT password supplied)\n", - username)); - } else if (strchr_m(username, '@')) { - DEBUG(3,("ntlm_password_check: NO LanMan password allowed for username@realm logins (user: %s)\n", - username)); - } else { - DEBUG(4,("ntlm_password_check: Checking LM password\n")); - if (smb_pwd_check_ntlmv1(mem_ctx, - lm_response, - stored_lanman->hash, challenge, - NULL)) { - /* The session key for this response is still very odd. - It not very secure, so use it only if we otherwise - allow LM authentication */ - - if (lanman_auth && stored_lanman) { - uint8_t first_8_lm_hash[16]; - memcpy(first_8_lm_hash, stored_lanman->hash, 8); - memset(first_8_lm_hash + 8, '\0', 8); - *user_sess_key = data_blob_talloc(mem_ctx, first_8_lm_hash, 16); - *lm_sess_key = data_blob_talloc(mem_ctx, stored_lanman->hash, 8); - } - return NT_STATUS_OK; - } - } - - if (!stored_nt) { - DEBUG(4,("ntlm_password_check: LM password check failed for user, no NT password %s\n",username)); - return NT_STATUS_WRONG_PASSWORD; - } - - /* This is for 'LMv2' authentication. almost NTLMv2 but limited to 24 bytes. - - related to Win9X, legacy NAS pass-though authentication - */ - DEBUG(4,("ntlm_password_check: Checking LMv2 password with domain %s\n", client_domain)); - if (smb_pwd_check_ntlmv2(mem_ctx, - lm_response, - stored_nt->hash, challenge, - client_username, - client_domain, - false, - &tmp_sess_key)) { - if (nt_response->length > 24) { - /* If NTLMv2 authentication has preceeded us - * (even if it failed), then use the session - * key from that. See the RPC-SAMLOGON - * torture test */ - smb_sess_key_ntlmv2(mem_ctx, - nt_response, - stored_nt->hash, challenge, - client_username, - client_domain, - false, - user_sess_key); - } else { - /* Otherwise, use the LMv2 session key */ - *user_sess_key = tmp_sess_key; - } - *lm_sess_key = *user_sess_key; - if (user_sess_key->length) { - lm_sess_key->length = 8; - } - return NT_STATUS_OK; - } - - DEBUG(4,("ntlm_password_check: Checking LMv2 password with upper-cased version of domain %s\n", client_domain)); - if (smb_pwd_check_ntlmv2(mem_ctx, - lm_response, - stored_nt->hash, challenge, - client_username, - client_domain, - true, - &tmp_sess_key)) { - if (nt_response->length > 24) { - /* If NTLMv2 authentication has preceeded us - * (even if it failed), then use the session - * key from that. See the RPC-SAMLOGON - * torture test */ - smb_sess_key_ntlmv2(mem_ctx, - nt_response, - stored_nt->hash, challenge, - client_username, - client_domain, - true, - user_sess_key); - } else { - /* Otherwise, use the LMv2 session key */ - *user_sess_key = tmp_sess_key; - } - *lm_sess_key = *user_sess_key; - if (user_sess_key->length) { - lm_sess_key->length = 8; - } - return NT_STATUS_OK; - } - - DEBUG(4,("ntlm_password_check: Checking LMv2 password without a domain\n")); - if (smb_pwd_check_ntlmv2(mem_ctx, - lm_response, - stored_nt->hash, challenge, - client_username, - "", - false, - &tmp_sess_key)) { - if (nt_response->length > 24) { - /* If NTLMv2 authentication has preceeded us - * (even if it failed), then use the session - * key from that. See the RPC-SAMLOGON - * torture test */ - smb_sess_key_ntlmv2(mem_ctx, - nt_response, - stored_nt->hash, challenge, - client_username, - "", - false, - user_sess_key); - } else { - /* Otherwise, use the LMv2 session key */ - *user_sess_key = tmp_sess_key; - } - *lm_sess_key = *user_sess_key; - if (user_sess_key->length) { - lm_sess_key->length = 8; - } - return NT_STATUS_OK; - } - - /* Apparently NT accepts NT responses in the LM field - - I think this is related to Win9X pass-though authentication - */ - DEBUG(4,("ntlm_password_check: Checking NT MD4 password in LM field\n")); - if (ntlm_auth) { - if (smb_pwd_check_ntlmv1(mem_ctx, - lm_response, - stored_nt->hash, challenge, - NULL)) { - /* The session key for this response is still very odd. - It not very secure, so use it only if we otherwise - allow LM authentication */ - - if (lanman_auth && stored_lanman) { - uint8_t first_8_lm_hash[16]; - memcpy(first_8_lm_hash, stored_lanman->hash, 8); - memset(first_8_lm_hash + 8, '\0', 8); - *user_sess_key = data_blob_talloc(mem_ctx, first_8_lm_hash, 16); - *lm_sess_key = data_blob_talloc(mem_ctx, stored_lanman->hash, 8); - } - return NT_STATUS_OK; - } - DEBUG(3,("ntlm_password_check: LM password, NT MD4 password in LM field and LMv2 failed for user %s\n",username)); - } else { - DEBUG(3,("ntlm_password_check: LM password and LMv2 failed for user %s, and NT MD4 password in LM field not permitted\n",username)); - } - - /* Try and match error codes */ - if (strchr_m(username, '@')) { - return NT_STATUS_NOT_FOUND; - } - return NT_STATUS_WRONG_PASSWORD; -} - diff --git a/source4/libcli/auth/config.mk b/source4/libcli/auth/config.mk deleted file mode 100644 index 498c2af258..0000000000 --- a/source4/libcli/auth/config.mk +++ /dev/null @@ -1,17 +0,0 @@ -################################# -# Start SUBSYSTEM LIBCLI_AUTH -[SUBSYSTEM::LIBCLI_AUTH] -PUBLIC_DEPENDENCIES = \ - MSRPC_PARSE \ - LIBSAMBA-HOSTCONFIG -# End SUBSYSTEM LIBCLI_AUTH -################################# - -LIBCLI_AUTH_OBJ_FILES = $(addprefix $(libclisrcdir)/auth/, \ - credentials.o \ - session.o \ - smbencrypt.o \ - smbdes.o) - -PUBLIC_HEADERS += $(libclisrcdir)/auth/credentials.h -$(eval $(call proto_header_template,$(libclisrcdir)/auth/proto.h,$(LIBCLI_AUTH_OBJ_FILES:.o=.c))) diff --git a/source4/libcli/auth/credentials.c b/source4/libcli/auth/credentials.c deleted file mode 100644 index 3c77b0836d..0000000000 --- a/source4/libcli/auth/credentials.c +++ /dev/null @@ -1,375 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - code to manipulate domain credentials - - Copyright (C) Andrew Tridgell 1997-2003 - Copyright (C) Andrew Bartlett 2004 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -#include "includes.h" -#include "system/time.h" -#include "auth/auth.h" -#include "../lib/crypto/crypto.h" -#include "libcli/auth/libcli_auth.h" - -/* - initialise the credentials state for old-style 64 bit session keys - - this call is made after the netr_ServerReqChallenge call -*/ -static void creds_init_64bit(struct creds_CredentialState *creds, - const struct netr_Credential *client_challenge, - const struct netr_Credential *server_challenge, - const struct samr_Password *machine_password) -{ - uint32_t sum[2]; - uint8_t sum2[8]; - - sum[0] = IVAL(client_challenge->data, 0) + IVAL(server_challenge->data, 0); - sum[1] = IVAL(client_challenge->data, 4) + IVAL(server_challenge->data, 4); - - SIVAL(sum2,0,sum[0]); - SIVAL(sum2,4,sum[1]); - - ZERO_STRUCT(creds->session_key); - - des_crypt128(creds->session_key, sum2, machine_password->hash); - - des_crypt112(creds->client.data, client_challenge->data, creds->session_key, 1); - des_crypt112(creds->server.data, server_challenge->data, creds->session_key, 1); - - creds->seed = creds->client; -} - -/* - initialise the credentials state for ADS-style 128 bit session keys - - this call is made after the netr_ServerReqChallenge call -*/ -static void creds_init_128bit(struct creds_CredentialState *creds, - const struct netr_Credential *client_challenge, - const struct netr_Credential *server_challenge, - const struct samr_Password *machine_password) -{ - unsigned char zero[4], tmp[16]; - HMACMD5Context ctx; - struct MD5Context md5; - - ZERO_STRUCT(creds->session_key); - - memset(zero, 0, sizeof(zero)); - - hmac_md5_init_rfc2104(machine_password->hash, sizeof(machine_password->hash), &ctx); - MD5Init(&md5); - MD5Update(&md5, zero, sizeof(zero)); - MD5Update(&md5, client_challenge->data, 8); - MD5Update(&md5, server_challenge->data, 8); - MD5Final(tmp, &md5); - hmac_md5_update(tmp, sizeof(tmp), &ctx); - hmac_md5_final(creds->session_key, &ctx); - - creds->client = *client_challenge; - creds->server = *server_challenge; - - des_crypt112(creds->client.data, client_challenge->data, creds->session_key, 1); - des_crypt112(creds->server.data, server_challenge->data, creds->session_key, 1); - - creds->seed = creds->client; -} - - -/* - step the credentials to the next element in the chain, updating the - current client and server credentials and the seed -*/ -static void creds_step(struct creds_CredentialState *creds) -{ - struct netr_Credential time_cred; - - DEBUG(5,("\tseed %08x:%08x\n", - IVAL(creds->seed.data, 0), IVAL(creds->seed.data, 4))); - - SIVAL(time_cred.data, 0, IVAL(creds->seed.data, 0) + creds->sequence); - SIVAL(time_cred.data, 4, IVAL(creds->seed.data, 4)); - - DEBUG(5,("\tseed+time %08x:%08x\n", IVAL(time_cred.data, 0), IVAL(time_cred.data, 4))); - - des_crypt112(creds->client.data, time_cred.data, creds->session_key, 1); - - DEBUG(5,("\tCLIENT %08x:%08x\n", - IVAL(creds->client.data, 0), IVAL(creds->client.data, 4))); - - SIVAL(time_cred.data, 0, IVAL(creds->seed.data, 0) + creds->sequence + 1); - SIVAL(time_cred.data, 4, IVAL(creds->seed.data, 4)); - - DEBUG(5,("\tseed+time+1 %08x:%08x\n", - IVAL(time_cred.data, 0), IVAL(time_cred.data, 4))); - - des_crypt112(creds->server.data, time_cred.data, creds->session_key, 1); - - DEBUG(5,("\tSERVER %08x:%08x\n", - IVAL(creds->server.data, 0), IVAL(creds->server.data, 4))); - - creds->seed = time_cred; -} - - -/* - DES encrypt a 8 byte LMSessionKey buffer using the Netlogon session key -*/ -void creds_des_encrypt_LMKey(struct creds_CredentialState *creds, struct netr_LMSessionKey *key) -{ - struct netr_LMSessionKey tmp; - des_crypt56(tmp.key, key->key, creds->session_key, 1); - *key = tmp; -} - -/* - DES decrypt a 8 byte LMSessionKey buffer using the Netlogon session key -*/ -void creds_des_decrypt_LMKey(struct creds_CredentialState *creds, struct netr_LMSessionKey *key) -{ - struct netr_LMSessionKey tmp; - des_crypt56(tmp.key, key->key, creds->session_key, 0); - *key = tmp; -} - -/* - DES encrypt a 16 byte password buffer using the session key -*/ -void creds_des_encrypt(struct creds_CredentialState *creds, struct samr_Password *pass) -{ - struct samr_Password tmp; - des_crypt112_16(tmp.hash, pass->hash, creds->session_key, 1); - *pass = tmp; -} - -/* - DES decrypt a 16 byte password buffer using the session key -*/ -void creds_des_decrypt(struct creds_CredentialState *creds, struct samr_Password *pass) -{ - struct samr_Password tmp; - des_crypt112_16(tmp.hash, pass->hash, creds->session_key, 0); - *pass = tmp; -} - -/* - ARCFOUR encrypt/decrypt a password buffer using the session key -*/ -void creds_arcfour_crypt(struct creds_CredentialState *creds, uint8_t *data, size_t len) -{ - DATA_BLOB session_key = data_blob(creds->session_key, 16); - - arcfour_crypt_blob(data, len, &session_key); - - data_blob_free(&session_key); -} - -/***************************************************************** -The above functions are common to the client and server interface -next comes the client specific functions -******************************************************************/ - -/* - initialise the credentials chain and return the first client - credentials -*/ -void creds_client_init(struct creds_CredentialState *creds, - const struct netr_Credential *client_challenge, - const struct netr_Credential *server_challenge, - const struct samr_Password *machine_password, - struct netr_Credential *initial_credential, - uint32_t negotiate_flags) -{ - creds->sequence = time(NULL); - creds->negotiate_flags = negotiate_flags; - - dump_data_pw("Client chall", client_challenge->data, sizeof(client_challenge->data)); - dump_data_pw("Server chall", server_challenge->data, sizeof(server_challenge->data)); - dump_data_pw("Machine Pass", machine_password->hash, sizeof(machine_password->hash)); - - if (negotiate_flags & NETLOGON_NEG_128BIT) { - creds_init_128bit(creds, client_challenge, server_challenge, machine_password); - } else { - creds_init_64bit(creds, client_challenge, server_challenge, machine_password); - } - - dump_data_pw("Session key", creds->session_key, 16); - dump_data_pw("Credential ", creds->client.data, 8); - - *initial_credential = creds->client; -} - -/* - step the credentials to the next element in the chain, updating the - current client and server credentials and the seed - - produce the next authenticator in the sequence ready to send to - the server -*/ -void creds_client_authenticator(struct creds_CredentialState *creds, - struct netr_Authenticator *next) -{ - creds->sequence += 2; - creds_step(creds); - - next->cred = creds->client; - next->timestamp = creds->sequence; -} - -/* - check that a credentials reply from a server is correct -*/ -bool creds_client_check(struct creds_CredentialState *creds, - const struct netr_Credential *received_credentials) -{ - if (!received_credentials || - memcmp(received_credentials->data, creds->server.data, 8) != 0) { - DEBUG(2,("credentials check failed\n")); - return false; - } - return true; -} - - -/***************************************************************** -The above functions are common to the client and server interface -next comes the server specific functions -******************************************************************/ - -/* - initialise the credentials chain and return the first server - credentials -*/ -void creds_server_init(struct creds_CredentialState *creds, - const struct netr_Credential *client_challenge, - const struct netr_Credential *server_challenge, - const struct samr_Password *machine_password, - struct netr_Credential *initial_credential, - uint32_t negotiate_flags) -{ - if (negotiate_flags & NETLOGON_NEG_128BIT) { - creds_init_128bit(creds, client_challenge, server_challenge, - machine_password); - } else { - creds_init_64bit(creds, client_challenge, server_challenge, - machine_password); - } - - *initial_credential = creds->server; - creds->negotiate_flags = negotiate_flags; -} - -/* - check that a credentials reply from a server is correct -*/ -bool creds_server_check(const struct creds_CredentialState *creds, - const struct netr_Credential *received_credentials) -{ - if (memcmp(received_credentials->data, creds->client.data, 8) != 0) { - DEBUG(2,("credentials check failed\n")); - dump_data_pw("client creds", creds->client.data, 8); - dump_data_pw("calc creds", received_credentials->data, 8); - return false; - } - return true; -} - -NTSTATUS creds_server_step_check(struct creds_CredentialState *creds, - struct netr_Authenticator *received_authenticator, - struct netr_Authenticator *return_authenticator) -{ - if (!received_authenticator || !return_authenticator) { - return NT_STATUS_INVALID_PARAMETER; - } - - if (!creds) { - return NT_STATUS_ACCESS_DENIED; - } - - /* TODO: this may allow the a replay attack on a non-signed - connection. Should we check that this is increasing? */ - creds->sequence = received_authenticator->timestamp; - creds_step(creds); - if (creds_server_check(creds, &received_authenticator->cred)) { - return_authenticator->cred = creds->server; - return_authenticator->timestamp = creds->sequence; - return NT_STATUS_OK; - } else { - ZERO_STRUCTP(return_authenticator); - return NT_STATUS_ACCESS_DENIED; - } -} - -void creds_decrypt_samlogon(struct creds_CredentialState *creds, - uint16_t validation_level, - union netr_Validation *validation) -{ - static const char zeros[16]; - - struct netr_SamBaseInfo *base = NULL; - switch (validation_level) { - case 2: - if (validation->sam2) { - base = &validation->sam2->base; - } - break; - case 3: - if (validation->sam3) { - base = &validation->sam3->base; - } - break; - case 6: - if (validation->sam6) { - base = &validation->sam6->base; - } - break; - default: - /* If we can't find it, we can't very well decrypt it */ - return; - } - - if (!base) { - return; - } - - /* find and decyrpt the session keys, return in parameters above */ - if (validation_level == 6) { - /* they aren't encrypted! */ - } else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) { - if (memcmp(base->key.key, zeros, - sizeof(base->key.key)) != 0) { - creds_arcfour_crypt(creds, - base->key.key, - sizeof(base->key.key)); - } - - if (memcmp(base->LMSessKey.key, zeros, - sizeof(base->LMSessKey.key)) != 0) { - creds_arcfour_crypt(creds, - base->LMSessKey.key, - sizeof(base->LMSessKey.key)); - } - } else { - if (memcmp(base->LMSessKey.key, zeros, - sizeof(base->LMSessKey.key)) != 0) { - creds_des_decrypt_LMKey(creds, - &base->LMSessKey); - } - } -} diff --git a/source4/libcli/auth/credentials.h b/source4/libcli/auth/credentials.h deleted file mode 100644 index 4e11cb090f..0000000000 --- a/source4/libcli/auth/credentials.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - code to manipulate domain credentials - - Copyright (C) Andrew Tridgell 2004 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -#include "librpc/gen_ndr/netlogon.h" - -struct creds_CredentialState { - uint32_t negotiate_flags; - uint8_t session_key[16]; - uint32_t sequence; - struct netr_Credential seed; - struct netr_Credential client; - struct netr_Credential server; - uint16_t secure_channel_type; - const char *domain; - const char *computer_name; - const char *account_name; - struct dom_sid *sid; -}; - -/* for the timebeing, use the same neg flags as Samba3. */ -/* The 7 here seems to be required to get Win2k not to downgrade us - to NT4. Actually, anything other than 1ff would seem to do... */ -#define NETLOGON_NEG_AUTH2_FLAGS 0x000701ff - -/* these are the flags that ADS clients use */ -#define NETLOGON_NEG_AUTH2_ADS_FLAGS (0x200fbffb | NETLOGON_NEG_ARCFOUR | NETLOGON_NEG_128BIT | NETLOGON_NEG_SCHANNEL) - - diff --git a/source4/libcli/auth/libcli_auth.h b/source4/libcli/auth/libcli_auth.h deleted file mode 100644 index ec1c1e7d98..0000000000 --- a/source4/libcli/auth/libcli_auth.h +++ /dev/null @@ -1,24 +0,0 @@ -/* - samba -- Unix SMB/CIFS implementation. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ -#ifndef __LIBCLI_AUTH_H__ -#define __LIBCLI_AUTH_H__ - -#include "librpc/gen_ndr/netlogon.h" -#include "libcli/auth/credentials.h" -#include "libcli/auth/proto.h" - -#endif /* __LIBCLI_AUTH_H__ */ diff --git a/source4/libcli/auth/session.c b/source4/libcli/auth/session.c deleted file mode 100644 index 10c728662d..0000000000 --- a/source4/libcli/auth/session.c +++ /dev/null @@ -1,218 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - code to encrypt/decrypt data using the user session key - - Copyright (C) Andrew Tridgell 2004 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -#include "includes.h" -#include "libcli/auth/libcli_auth.h" - -/* - encrypt or decrypt a blob of data using the user session key - as used in lsa_SetSecret - - before calling, the out blob must be initialised to be the same size - as the in blob -*/ -void sess_crypt_blob(DATA_BLOB *out, const DATA_BLOB *in, const DATA_BLOB *session_key, - bool forward) -{ - int i, k; - - for (i=0,k=0; - ilength; - i += 8, k += 7) { - uint8_t bin[8], bout[8], key[7]; - - memset(bin, 0, 8); - memcpy(bin, &in->data[i], MIN(8, in->length-i)); - - if (k + 7 > session_key->length) { - k = (session_key->length - k); - } - memcpy(key, &session_key->data[k], 7); - - des_crypt56(bout, bin, key, forward?1:0); - - memcpy(&out->data[i], bout, MIN(8, in->length-i)); - } -} - - -/* - a convenient wrapper around sess_crypt_blob() for strings, using the LSA convention - - note that we round the length to a multiple of 8. This seems to be needed for - compatibility with windows - - caller should free using data_blob_free() -*/ -DATA_BLOB sess_encrypt_string(const char *str, const DATA_BLOB *session_key) -{ - DATA_BLOB ret, src; - int slen = strlen(str); - int dlen = (slen+7) & ~7; - - src = data_blob(NULL, 8+dlen); - if (!src.data) { - return data_blob(NULL, 0); - } - - ret = data_blob(NULL, 8+dlen); - if (!ret.data) { - data_blob_free(&src); - return data_blob(NULL, 0); - } - - SIVAL(src.data, 0, slen); - SIVAL(src.data, 4, 1); - memset(src.data+8, 0, dlen); - memcpy(src.data+8, str, slen); - - sess_crypt_blob(&ret, &src, session_key, true); - - data_blob_free(&src); - - return ret; -} - -/* - a convenient wrapper around sess_crypt_blob() for strings, using the LSA convention - - caller should free the returned string -*/ -char *sess_decrypt_string(TALLOC_CTX *mem_ctx, - DATA_BLOB *blob, const DATA_BLOB *session_key) -{ - DATA_BLOB out; - int slen; - char *ret; - - if (blob->length < 8) { - return NULL; - } - - out = data_blob_talloc(mem_ctx, NULL, blob->length); - if (!out.data) { - return NULL; - } - - sess_crypt_blob(&out, blob, session_key, false); - - if (IVAL(out.data, 4) != 1) { - DEBUG(0,("Unexpected revision number %d in session crypted string\n", - IVAL(out.data, 4))); - data_blob_free(&out); - return NULL; - } - - slen = IVAL(out.data, 0); - if (slen > blob->length - 8) { - DEBUG(0,("Invalid crypt length %d\n", slen)); - data_blob_free(&out); - return NULL; - } - - ret = talloc_strndup(mem_ctx, (const char *)(out.data+8), slen); - - data_blob_free(&out); - - DEBUG(0,("decrypted string '%s' of length %d\n", ret, slen)); - - return ret; -} - -/* - a convenient wrapper around sess_crypt_blob() for DATA_BLOBs, using the LSA convention - - note that we round the length to a multiple of 8. This seems to be needed for - compatibility with windows - - caller should free using data_blob_free() -*/ -DATA_BLOB sess_encrypt_blob(TALLOC_CTX *mem_ctx, DATA_BLOB *blob_in, const DATA_BLOB *session_key) -{ - DATA_BLOB ret, src; - int dlen = (blob_in->length+7) & ~7; - - src = data_blob_talloc(mem_ctx, NULL, 8+dlen); - if (!src.data) { - return data_blob(NULL, 0); - } - - ret = data_blob_talloc(mem_ctx, NULL, 8+dlen); - if (!ret.data) { - data_blob_free(&src); - return data_blob(NULL, 0); - } - - SIVAL(src.data, 0, blob_in->length); - SIVAL(src.data, 4, 1); - memset(src.data+8, 0, dlen); - memcpy(src.data+8, blob_in->data, blob_in->length); - - sess_crypt_blob(&ret, &src, session_key, true); - - data_blob_free(&src); - - return ret; -} - -/* - Decrypt a DATA_BLOB using the LSA convention -*/ -NTSTATUS sess_decrypt_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, const DATA_BLOB *session_key, - DATA_BLOB *ret) -{ - DATA_BLOB out; - int slen; - - if (blob->length < 8) { - DEBUG(0, ("Unexpected length %d in session crypted secret (BLOB)\n", - (int)blob->length)); - return NT_STATUS_INVALID_PARAMETER; - } - - out = data_blob_talloc(mem_ctx, NULL, blob->length); - if (!out.data) { - return NT_STATUS_NO_MEMORY; - } - - sess_crypt_blob(&out, blob, session_key, false); - - if (IVAL(out.data, 4) != 1) { - DEBUG(2,("Unexpected revision number %d in session crypted secret (BLOB)\n", - IVAL(out.data, 4))); - return NT_STATUS_UNKNOWN_REVISION; - } - - slen = IVAL(out.data, 0); - if (slen > blob->length - 8) { - DEBUG(0,("Invalid crypt length %d in session crypted secret (BLOB)\n", slen)); - return NT_STATUS_WRONG_PASSWORD; - } - - *ret = data_blob_talloc(mem_ctx, out.data+8, slen); - if (slen && !ret->data) { - return NT_STATUS_NO_MEMORY; - } - - data_blob_free(&out); - - return NT_STATUS_OK; -} diff --git a/source4/libcli/auth/smbdes.c b/source4/libcli/auth/smbdes.c deleted file mode 100644 index 32e65e779d..0000000000 --- a/source4/libcli/auth/smbdes.c +++ /dev/null @@ -1,381 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - a partial implementation of DES designed for use in the - SMB authentication protocol - - Copyright (C) Andrew Tridgell 1998 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -#include "includes.h" -#include "libcli/auth/libcli_auth.h" - -/* NOTES: - - This code makes no attempt to be fast! In fact, it is a very - slow implementation - - This code is NOT a complete DES implementation. It implements only - the minimum necessary for SMB authentication, as used by all SMB - products (including every copy of Microsoft Windows95 ever sold) - - In particular, it can only do a unchained forward DES pass. This - means it is not possible to use this code for encryption/decryption - of data, instead it is only useful as a "hash" algorithm. - - There is no entry point into this code that allows normal DES operation. - - I believe this means that this code does not come under ITAR - regulations but this is NOT a legal opinion. If you are concerned - about the applicability of ITAR regulations to this code then you - should confirm it for yourself (and maybe let me know if you come - up with a different answer to the one above) -*/ - - -static const uint8_t perm1[56] = {57, 49, 41, 33, 25, 17, 9, - 1, 58, 50, 42, 34, 26, 18, - 10, 2, 59, 51, 43, 35, 27, - 19, 11, 3, 60, 52, 44, 36, - 63, 55, 47, 39, 31, 23, 15, - 7, 62, 54, 46, 38, 30, 22, - 14, 6, 61, 53, 45, 37, 29, - 21, 13, 5, 28, 20, 12, 4}; - -static const uint8_t perm2[48] = {14, 17, 11, 24, 1, 5, - 3, 28, 15, 6, 21, 10, - 23, 19, 12, 4, 26, 8, - 16, 7, 27, 20, 13, 2, - 41, 52, 31, 37, 47, 55, - 30, 40, 51, 45, 33, 48, - 44, 49, 39, 56, 34, 53, - 46, 42, 50, 36, 29, 32}; - -static const uint8_t perm3[64] = {58, 50, 42, 34, 26, 18, 10, 2, - 60, 52, 44, 36, 28, 20, 12, 4, - 62, 54, 46, 38, 30, 22, 14, 6, - 64, 56, 48, 40, 32, 24, 16, 8, - 57, 49, 41, 33, 25, 17, 9, 1, - 59, 51, 43, 35, 27, 19, 11, 3, - 61, 53, 45, 37, 29, 21, 13, 5, - 63, 55, 47, 39, 31, 23, 15, 7}; - -static const uint8_t perm4[48] = { 32, 1, 2, 3, 4, 5, - 4, 5, 6, 7, 8, 9, - 8, 9, 10, 11, 12, 13, - 12, 13, 14, 15, 16, 17, - 16, 17, 18, 19, 20, 21, - 20, 21, 22, 23, 24, 25, - 24, 25, 26, 27, 28, 29, - 28, 29, 30, 31, 32, 1}; - -static const uint8_t perm5[32] = { 16, 7, 20, 21, - 29, 12, 28, 17, - 1, 15, 23, 26, - 5, 18, 31, 10, - 2, 8, 24, 14, - 32, 27, 3, 9, - 19, 13, 30, 6, - 22, 11, 4, 25}; - - -static const uint8_t perm6[64] ={ 40, 8, 48, 16, 56, 24, 64, 32, - 39, 7, 47, 15, 55, 23, 63, 31, - 38, 6, 46, 14, 54, 22, 62, 30, - 37, 5, 45, 13, 53, 21, 61, 29, - 36, 4, 44, 12, 52, 20, 60, 28, - 35, 3, 43, 11, 51, 19, 59, 27, - 34, 2, 42, 10, 50, 18, 58, 26, - 33, 1, 41, 9, 49, 17, 57, 25}; - - -static const uint8_t sc[16] = {1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1}; - -static const uint8_t sbox[8][4][16] = { - {{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7}, - {0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8}, - {4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0}, - {15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13}}, - - {{15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10}, - {3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5}, - {0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15}, - {13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9}}, - - {{10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8}, - {13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1}, - {13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7}, - {1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12}}, - - {{7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15}, - {13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9}, - {10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4}, - {3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14}}, - - {{2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9}, - {14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6}, - {4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14}, - {11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3}}, - - {{12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11}, - {10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8}, - {9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6}, - {4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13}}, - - {{4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1}, - {13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6}, - {1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2}, - {6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12}}, - - {{13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7}, - {1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2}, - {7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8}, - {2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11}}}; - -static void permute(char *out, const char *in, const uint8_t *p, int n) -{ - int i; - for (i=0;i>1; - key[1] = ((str[0]&0x01)<<6) | (str[1]>>2); - key[2] = ((str[1]&0x03)<<5) | (str[2]>>3); - key[3] = ((str[2]&0x07)<<4) | (str[3]>>4); - key[4] = ((str[3]&0x0F)<<3) | (str[4]>>5); - key[5] = ((str[4]&0x1F)<<2) | (str[5]>>6); - key[6] = ((str[5]&0x3F)<<1) | (str[6]>>7); - key[7] = str[6]&0x7F; - for (i=0;i<8;i++) { - key[i] = (key[i]<<1); - } -} - -/* - basic des crypt using a 56 bit (7 byte) key -*/ -void des_crypt56(uint8_t out[8], const uint8_t in[8], const uint8_t key[7], int forw) -{ - int i; - char outb[64]; - char inb[64]; - char keyb[64]; - uint8_t key2[8]; - - str_to_key(key, key2); - - for (i=0;i<64;i++) { - inb[i] = (in[i/8] & (1<<(7-(i%8)))) ? 1 : 0; - keyb[i] = (key2[i/8] & (1<<(7-(i%8)))) ? 1 : 0; - outb[i] = 0; - } - - dohash(outb, inb, keyb, forw); - - for (i=0;i<8;i++) { - out[i] = 0; - } - - for (i=0;i<64;i++) { - if (outb[i]) - out[i/8] |= (1<<(7-(i%8))); - } -} - -void E_P16(const uint8_t *p14,uint8_t *p16) -{ - const uint8_t sp8[8] = {0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25}; - des_crypt56(p16, sp8, p14, 1); - des_crypt56(p16+8, sp8, p14+7, 1); -} - -void E_P24(const uint8_t *p21, const uint8_t *c8, uint8_t *p24) -{ - des_crypt56(p24, c8, p21, 1); - des_crypt56(p24+8, c8, p21+7, 1); - des_crypt56(p24+16, c8, p21+14, 1); -} - -void D_P16(const uint8_t *p14, const uint8_t *in, uint8_t *out) -{ - des_crypt56(out, in, p14, 0); - des_crypt56(out+8, in+8, p14+7, 0); -} - -void E_old_pw_hash( uint8_t *p14, const uint8_t *in, uint8_t *out) -{ - des_crypt56(out, in, p14, 1); - des_crypt56(out+8, in+8, p14+7, 1); -} - -/* des encryption with a 128 bit key */ -void des_crypt128(uint8_t out[8], const uint8_t in[8], const uint8_t key[16]) -{ - uint8_t buf[8]; - des_crypt56(buf, in, key, 1); - des_crypt56(out, buf, key+9, 1); -} - -/* des encryption with a 64 bit key */ -void des_crypt64(uint8_t out[8], const uint8_t in[8], const uint8_t key[8], int forw) -{ - uint8_t buf[8]; - uint8_t key2[8]; - ZERO_STRUCT(key2); - des_crypt56(buf, in, key, forw); - key2[0] = key[7]; - des_crypt56(out, buf, key2, forw); -} - -/* des encryption with a 112 bit (14 byte) key */ -void des_crypt112(uint8_t out[8], const uint8_t in[8], const uint8_t key[14], int forw) -{ - uint8_t buf[8]; - des_crypt56(buf, in, key, forw); - des_crypt56(out, buf, key+7, forw); -} - -/* des encryption of a 16 byte lump of data with a 112 bit key */ -void des_crypt112_16(uint8_t out[16], uint8_t in[16], const uint8_t key[14], int forw) -{ - des_crypt56(out, in, key, forw); - des_crypt56(out + 8, in + 8, key+7, forw); -} - -/* Decode a sam password hash into a password. The password hash is the - same method used to store passwords in the NT registry. The DES key - used is based on the RID of the user. */ -void sam_rid_crypt(uint_t rid, const uint8_t *in, uint8_t *out, int forw) -{ - uint8_t s[14]; - - s[0] = s[4] = s[8] = s[12] = (uint8_t)(rid & 0xFF); - s[1] = s[5] = s[9] = s[13] = (uint8_t)((rid >> 8) & 0xFF); - s[2] = s[6] = s[10] = (uint8_t)((rid >> 16) & 0xFF); - s[3] = s[7] = s[11] = (uint8_t)((rid >> 24) & 0xFF); - - des_crypt56(out, in, s, forw); - des_crypt56(out+8, in+8, s+7, forw); -} diff --git a/source4/libcli/auth/smbencrypt.c b/source4/libcli/auth/smbencrypt.c deleted file mode 100644 index c6118c6568..0000000000 --- a/source4/libcli/auth/smbencrypt.c +++ /dev/null @@ -1,595 +0,0 @@ -/* - Unix SMB/CIFS implementation. - SMB parameters and setup - Copyright (C) Andrew Tridgell 1992-1998 - Modified by Jeremy Allison 1995. - Copyright (C) Jeremy Allison 1995-2000. - Copyright (C) Luke Kennethc Casson Leighton 1996-2000. - Copyright (C) Andrew Bartlett 2002-2003 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -#include "includes.h" -#include "system/time.h" -#include "auth/ntlmssp/ntlmssp.h" -#include "auth/ntlmssp/msrpc_parse.h" -#include "../lib/crypto/crypto.h" -#include "libcli/auth/libcli_auth.h" - -/* - This implements the X/Open SMB password encryption - It takes a password ('unix' string), a 8 byte "crypt key" - and puts 24 bytes of encrypted password into p24 - - Returns false if password must have been truncated to create LM hash -*/ -bool SMBencrypt(const char *passwd, const uint8_t *c8, uint8_t p24[24]) -{ - bool ret; - uint8_t p21[21]; - - memset(p21,'\0',21); - ret = E_deshash(passwd, p21); - - SMBOWFencrypt(p21, c8, p24); - -#ifdef DEBUG_PASSWORD - DEBUG(100,("SMBencrypt: lm#, challenge, response\n")); - dump_data(100, p21, 16); - dump_data(100, c8, 8); - dump_data(100, p24, 24); -#endif - - return ret; -} - -/** - * Creates the MD4 Hash of the users password in NT UNICODE. - * @param passwd password in 'unix' charset. - * @param p16 return password hashed with md4, caller allocated 16 byte buffer - */ - -bool E_md4hash(const char *passwd, uint8_t p16[16]) -{ - size_t len; - smb_ucs2_t *wpwd; - bool ret; - - ret = push_ucs2_talloc(NULL, &wpwd, passwd, &len); - if (!ret || len < 2) { - /* We don't want to return fixed data, as most callers - * don't check */ - mdfour(p16, (const uint8_t *)passwd, strlen(passwd)); - return false; - } - - len -= 2; - mdfour(p16, (const uint8_t *)wpwd, len); - - talloc_free(wpwd); - return true; -} - -/** - * Creates the DES forward-only Hash of the users password in DOS ASCII charset - * @param passwd password in 'unix' charset. - * @param p16 return password hashed with DES, caller allocated 16 byte buffer - * @return false if password was > 14 characters, and therefore may be incorrect, otherwise true - * @note p16 is filled in regardless - */ - -bool E_deshash(const char *passwd, uint8_t p16[16]) -{ - bool ret = true; - char dospwd[256]; - ZERO_STRUCT(dospwd); - - /* Password must be converted to DOS charset - null terminated, uppercase. */ - push_string(dospwd, passwd, sizeof(dospwd), STR_ASCII|STR_UPPER|STR_TERMINATE); - - /* Only the first 14 chars are considered, password need not be null terminated. */ - E_P16((const uint8_t *)dospwd, p16); - - if (strlen(dospwd) > 14) { - ret = false; - } - - ZERO_STRUCT(dospwd); - - return ret; -} - -/* Does both the NTLMv2 owfs of a user's password */ -bool ntv2_owf_gen(const uint8_t owf[16], - const char *user_in, const char *domain_in, - bool upper_case_domain, /* Transform the domain into UPPER case */ - uint8_t kr_buf[16]) -{ - smb_ucs2_t *user; - smb_ucs2_t *domain; - size_t user_byte_len; - size_t domain_byte_len; - bool ret; - - HMACMD5Context ctx; - TALLOC_CTX *mem_ctx = talloc_init("ntv2_owf_gen for %s\\%s", domain_in, user_in); - - if (!mem_ctx) { - return false; - } - - if (!user_in) { - user_in = ""; - } - - if (!domain_in) { - domain_in = ""; - } - - user_in = strupper_talloc(mem_ctx, user_in); - if (user_in == NULL) { - talloc_free(mem_ctx); - return false; - } - - if (upper_case_domain) { - domain_in = strupper_talloc(mem_ctx, domain_in); - if (domain_in == NULL) { - talloc_free(mem_ctx); - return false; - } - } - - ret = push_ucs2_talloc(mem_ctx, &user, user_in, &user_byte_len ); - if (!ret) { - DEBUG(0, ("push_uss2_talloc() for user returned -1 (probably talloc() failure)\n")); - talloc_free(mem_ctx); - return false; - } - - ret = push_ucs2_talloc(mem_ctx, &domain, domain_in, &domain_byte_len); - if (!ret) { - DEBUG(0, ("push_ucs2_talloc() for domain returned -1 (probably talloc() failure)\n")); - talloc_free(mem_ctx); - return false; - } - - SMB_ASSERT(user_byte_len >= 2); - SMB_ASSERT(domain_byte_len >= 2); - - /* We don't want null termination */ - user_byte_len = user_byte_len - 2; - domain_byte_len = domain_byte_len - 2; - - hmac_md5_init_limK_to_64(owf, 16, &ctx); - hmac_md5_update((const void *)user, user_byte_len, &ctx); - hmac_md5_update((const void *)domain, domain_byte_len, &ctx); - hmac_md5_final(kr_buf, &ctx); - -#ifdef DEBUG_PASSWORD - DEBUG(100, ("ntv2_owf_gen: user, domain, owfkey, kr\n")); - dump_data(100, (const void *)user, user_byte_len); - dump_data(100, (const void *)domain, domain_byte_len); - dump_data(100, owf, 16); - dump_data(100, kr_buf, 16); -#endif - - talloc_free(mem_ctx); - return true; -} - -/* Does the des encryption from the NT or LM MD4 hash. */ -void SMBOWFencrypt(const uint8_t passwd[16], const uint8_t *c8, uint8_t p24[24]) -{ - uint8_t p21[21]; - - ZERO_STRUCT(p21); - - memcpy(p21, passwd, 16); - E_P24(p21, c8, p24); -} - -/* Does the NT MD4 hash then des encryption. */ - -void SMBNTencrypt(const char *passwd, uint8_t *c8, uint8_t *p24) -{ - uint8_t p21[21]; - - memset(p21,'\0',21); - - E_md4hash(passwd, p21); - SMBOWFencrypt(p21, c8, p24); - -#ifdef DEBUG_PASSWORD - DEBUG(100,("SMBNTencrypt: nt#, challenge, response\n")); - dump_data(100, p21, 16); - dump_data(100, c8, 8); - dump_data(100, p24, 24); -#endif -} - -/* Does the md5 encryption from the Key Response for NTLMv2. */ -void SMBOWFencrypt_ntv2(const uint8_t kr[16], - const DATA_BLOB *srv_chal, - const DATA_BLOB *smbcli_chal, - uint8_t resp_buf[16]) -{ - HMACMD5Context ctx; - - hmac_md5_init_limK_to_64(kr, 16, &ctx); - hmac_md5_update(srv_chal->data, srv_chal->length, &ctx); - hmac_md5_update(smbcli_chal->data, smbcli_chal->length, &ctx); - hmac_md5_final(resp_buf, &ctx); - -#ifdef DEBUG_PASSWORD - DEBUG(100, ("SMBOWFencrypt_ntv2: srv_chal, smbcli_chal, resp_buf\n")); - dump_data(100, srv_chal->data, srv_chal->length); - dump_data(100, smbcli_chal->data, smbcli_chal->length); - dump_data(100, resp_buf, 16); -#endif -} - -void SMBsesskeygen_ntv2(const uint8_t kr[16], - const uint8_t * nt_resp, uint8_t sess_key[16]) -{ - /* a very nice, 128 bit, variable session key */ - - HMACMD5Context ctx; - - hmac_md5_init_limK_to_64(kr, 16, &ctx); - hmac_md5_update(nt_resp, 16, &ctx); - hmac_md5_final((uint8_t *)sess_key, &ctx); - -#ifdef DEBUG_PASSWORD - DEBUG(100, ("SMBsesskeygen_ntv2:\n")); - dump_data(100, sess_key, 16); -#endif -} - -void SMBsesskeygen_ntv1(const uint8_t kr[16], uint8_t sess_key[16]) -{ - /* yes, this session key does not change - yes, this - is a problem - but it is 128 bits */ - - mdfour((uint8_t *)sess_key, kr, 16); - -#ifdef DEBUG_PASSWORD - DEBUG(100, ("SMBsesskeygen_ntv1:\n")); - dump_data(100, sess_key, 16); -#endif -} - -void SMBsesskeygen_lm_sess_key(const uint8_t lm_hash[16], - const uint8_t lm_resp[24], /* only uses 8 */ - uint8_t sess_key[16]) -{ - /* Calculate the LM session key (effective length 40 bits, - but changes with each session) */ - uint8_t p24[24]; - uint8_t partial_lm_hash[14]; - - memcpy(partial_lm_hash, lm_hash, 8); - memset(partial_lm_hash + 8, 0xbd, 6); - - des_crypt56(p24, lm_resp, partial_lm_hash, 1); - des_crypt56(p24+8, lm_resp, partial_lm_hash + 7, 1); - - memcpy(sess_key, p24, 16); - -#ifdef DEBUG_PASSWORD - DEBUG(100, ("SMBsesskeygen_lm_sess_key: \n")); - dump_data(100, sess_key, 16); -#endif -} - -DATA_BLOB NTLMv2_generate_names_blob(TALLOC_CTX *mem_ctx, - const char *hostname, - const char *domain) -{ - DATA_BLOB names_blob = data_blob_talloc(mem_ctx, NULL, 0); - - msrpc_gen(mem_ctx, &names_blob, - "aaa", - NTLMSSP_NAME_TYPE_DOMAIN, domain, - NTLMSSP_NAME_TYPE_SERVER, hostname, - 0, ""); - return names_blob; -} - -static DATA_BLOB NTLMv2_generate_client_data(TALLOC_CTX *mem_ctx, const DATA_BLOB *names_blob) -{ - uint8_t client_chal[8]; - DATA_BLOB response = data_blob(NULL, 0); - uint8_t long_date[8]; - NTTIME nttime; - - unix_to_nt_time(&nttime, time(NULL)); - - generate_random_buffer(client_chal, sizeof(client_chal)); - - push_nttime(long_date, 0, nttime); - - /* See http://www.ubiqx.org/cifs/SMB.html#SMB.8.5 */ - - msrpc_gen(mem_ctx, &response, "ddbbdb", - 0x00000101, /* Header */ - 0, /* 'Reserved' */ - long_date, 8, /* Timestamp */ - client_chal, 8, /* client challenge */ - 0, /* Unknown */ - names_blob->data, names_blob->length); /* End of name list */ - - return response; -} - -static DATA_BLOB NTLMv2_generate_response(TALLOC_CTX *out_mem_ctx, - const uint8_t ntlm_v2_hash[16], - const DATA_BLOB *server_chal, - const DATA_BLOB *names_blob) -{ - uint8_t ntlmv2_response[16]; - DATA_BLOB ntlmv2_client_data; - DATA_BLOB final_response; - - TALLOC_CTX *mem_ctx = talloc_named(out_mem_ctx, 0, - "NTLMv2_generate_response internal context"); - - if (!mem_ctx) { - return data_blob(NULL, 0); - } - - /* NTLMv2 */ - /* generate some data to pass into the response function - including - the hostname and domain name of the server */ - ntlmv2_client_data = NTLMv2_generate_client_data(mem_ctx, names_blob); - - /* Given that data, and the challenge from the server, generate a response */ - SMBOWFencrypt_ntv2(ntlm_v2_hash, server_chal, &ntlmv2_client_data, ntlmv2_response); - - final_response = data_blob_talloc(out_mem_ctx, NULL, sizeof(ntlmv2_response) + ntlmv2_client_data.length); - - memcpy(final_response.data, ntlmv2_response, sizeof(ntlmv2_response)); - - memcpy(final_response.data+sizeof(ntlmv2_response), - ntlmv2_client_data.data, ntlmv2_client_data.length); - - talloc_free(mem_ctx); - - return final_response; -} - -static DATA_BLOB LMv2_generate_response(TALLOC_CTX *mem_ctx, - const uint8_t ntlm_v2_hash[16], - const DATA_BLOB *server_chal) -{ - uint8_t lmv2_response[16]; - DATA_BLOB lmv2_client_data = data_blob_talloc(mem_ctx, NULL, 8); - DATA_BLOB final_response = data_blob_talloc(mem_ctx, NULL,24); - - /* LMv2 */ - /* client-supplied random data */ - generate_random_buffer(lmv2_client_data.data, lmv2_client_data.length); - - /* Given that data, and the challenge from the server, generate a response */ - SMBOWFencrypt_ntv2(ntlm_v2_hash, server_chal, &lmv2_client_data, lmv2_response); - memcpy(final_response.data, lmv2_response, sizeof(lmv2_response)); - - /* after the first 16 bytes is the random data we generated above, - so the server can verify us with it */ - memcpy(final_response.data+sizeof(lmv2_response), - lmv2_client_data.data, lmv2_client_data.length); - - data_blob_free(&lmv2_client_data); - - return final_response; -} - -bool SMBNTLMv2encrypt_hash(TALLOC_CTX *mem_ctx, - const char *user, const char *domain, const uint8_t nt_hash[16], - const DATA_BLOB *server_chal, - const DATA_BLOB *names_blob, - DATA_BLOB *lm_response, DATA_BLOB *nt_response, - DATA_BLOB *lm_session_key, DATA_BLOB *user_session_key) -{ - uint8_t ntlm_v2_hash[16]; - - /* We don't use the NT# directly. Instead we use it mashed up with - the username and domain. - This prevents username swapping during the auth exchange - */ - if (!ntv2_owf_gen(nt_hash, user, domain, true, ntlm_v2_hash)) { - return false; - } - - if (nt_response) { - *nt_response = NTLMv2_generate_response(mem_ctx, - ntlm_v2_hash, server_chal, - names_blob); - if (user_session_key) { - *user_session_key = data_blob_talloc(mem_ctx, NULL, 16); - - /* The NTLMv2 calculations also provide a session key, for signing etc later */ - /* use only the first 16 bytes of nt_response for session key */ - SMBsesskeygen_ntv2(ntlm_v2_hash, nt_response->data, user_session_key->data); - } - } - - /* LMv2 */ - - if (lm_response) { - *lm_response = LMv2_generate_response(mem_ctx, - ntlm_v2_hash, server_chal); - if (lm_session_key) { - *lm_session_key = data_blob_talloc(mem_ctx, NULL, 16); - - /* The NTLMv2 calculations also provide a session key, for signing etc later */ - /* use only the first 16 bytes of lm_response for session key */ - SMBsesskeygen_ntv2(ntlm_v2_hash, lm_response->data, lm_session_key->data); - } - } - - return true; -} - -bool SMBNTLMv2encrypt(TALLOC_CTX *mem_ctx, - const char *user, const char *domain, - const char *password, - const DATA_BLOB *server_chal, - const DATA_BLOB *names_blob, - DATA_BLOB *lm_response, DATA_BLOB *nt_response, - DATA_BLOB *lm_session_key, DATA_BLOB *user_session_key) -{ - uint8_t nt_hash[16]; - E_md4hash(password, nt_hash); - - return SMBNTLMv2encrypt_hash(mem_ctx, - user, domain, nt_hash, server_chal, names_blob, - lm_response, nt_response, lm_session_key, user_session_key); -} - -/*********************************************************** - encode a password buffer with a unicode password. The buffer - is filled with random data to make it harder to attack. -************************************************************/ -bool encode_pw_buffer(uint8_t buffer[516], const char *password, int string_flags) -{ - uint8_t new_pw[512]; - size_t new_pw_len; - - /* the incoming buffer can be any alignment. */ - string_flags |= STR_NOALIGN; - - new_pw_len = push_string(new_pw, - password, - sizeof(new_pw), string_flags); - - memcpy(&buffer[512 - new_pw_len], new_pw, new_pw_len); - - generate_random_buffer(buffer, 512 - new_pw_len); - - /* - * The length of the new password is in the last 4 bytes of - * the data buffer. - */ - SIVAL(buffer, 512, new_pw_len); - ZERO_STRUCT(new_pw); - return true; -} - - -/*********************************************************** - decode a password buffer - *new_pw_len is the length in bytes of the possibly mulitbyte - returned password including termination. -************************************************************/ -bool decode_pw_buffer(uint8_t in_buffer[516], char *new_pwrd, - int new_pwrd_size, int string_flags) -{ - int byte_len=0; - ssize_t converted_pw_len; - - /* the incoming buffer can be any alignment. */ - string_flags |= STR_NOALIGN; - - /* - Warning !!! : This function is called from some rpc call. - The password IN the buffer may be a UNICODE string. - The password IN new_pwrd is an ASCII string - If you reuse that code somewhere else check first. - */ - - /* The length of the new password is in the last 4 bytes of the data buffer. */ - - byte_len = IVAL(in_buffer, 512); - -#ifdef DEBUG_PASSWORD - dump_data(100, in_buffer, 516); -#endif - - /* Password cannot be longer than the size of the password buffer */ - if ( (byte_len < 0) || (byte_len > 512)) { - return false; - } - - /* decode into the return buffer. Buffer length supplied */ - converted_pw_len = pull_string(new_pwrd, &in_buffer[512 - byte_len], new_pwrd_size, - byte_len, string_flags); - - if (converted_pw_len == -1) { - return false; - } - -#ifdef DEBUG_PASSWORD - DEBUG(100,("decode_pw_buffer: new_pwrd: ")); - dump_data(100, (const uint8_t *)new_pwrd, converted_pw_len); - DEBUG(100,("multibyte len:%d\n", (int)converted_pw_len)); - DEBUG(100,("original char len:%d\n", byte_len/2)); -#endif - - return true; -} - -/*********************************************************** - encode a password buffer with an already unicode password. The - rest of the buffer is filled with random data to make it harder to attack. -************************************************************/ -bool set_pw_in_buffer(uint8_t buffer[516], DATA_BLOB *password) -{ - if (password->length > 512) { - return false; - } - - memcpy(&buffer[512 - password->length], password->data, password->length); - - generate_random_buffer(buffer, 512 - password->length); - - /* - * The length of the new password is in the last 4 bytes of - * the data buffer. - */ - SIVAL(buffer, 512, password->length); - return true; -} - -/*********************************************************** - decode a password buffer - *new_pw_size is the length in bytes of the extracted unicode password -************************************************************/ -bool extract_pw_from_buffer(TALLOC_CTX *mem_ctx, - uint8_t in_buffer[516], DATA_BLOB *new_pass) -{ - int byte_len=0; - - /* The length of the new password is in the last 4 bytes of the data buffer. */ - - byte_len = IVAL(in_buffer, 512); - -#ifdef DEBUG_PASSWORD - dump_data(100, in_buffer, 516); -#endif - - /* Password cannot be longer than the size of the password buffer */ - if ( (byte_len < 0) || (byte_len > 512)) { - return false; - } - - *new_pass = data_blob_talloc(mem_ctx, &in_buffer[512 - byte_len], byte_len); - - if (!new_pass->data) { - return false; - } - - return true; -} diff --git a/source4/libcli/config.mk b/source4/libcli/config.mk index 5b50bdfcbe..ad7bc311c2 100644 --- a/source4/libcli/config.mk +++ b/source4/libcli/config.mk @@ -1,4 +1,3 @@ -mkinclude auth/config.mk mkinclude ldap/config.mk mkinclude security/config.mk mkinclude wbclient/config.mk diff --git a/source4/main.mk b/source4/main.mk index d7db0580e9..f4314e3742 100644 --- a/source4/main.mk +++ b/source4/main.mk @@ -53,4 +53,5 @@ mkinclude ../lib/smbconf/config.mk mkinclude ../lib/async_req/config.mk mkinclude ../libcli/security/config.mk mkinclude ../libcli/ldap/config.mk +mkinclude ../libcli/auth/config.mk -- cgit