1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
Unix SMB/CIFS implementation.
Copyright (C) Stefan Metzmacher 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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
/*
* do a password change using DCERPC/SAMR calls
* 1. connect to the SAMR pipe of users domain PDC (maybe a standalone server or workstation)
* 2. try samr_ChangePassword3
*/
static NTSTATUS libnet_ChangePassword_rpc(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_ChangePassword *r)
{
NTSTATUS status;
union libnet_rpc_connect c;
struct samr_ChangePasswordUser3 pw3;
struct samr_Name server, account;
struct samr_CryptPassword nt_pass, lm_pass;
struct samr_Password nt_verifier, lm_verifier;
uint8_t old_nt_hash[16], new_nt_hash[16];
uint8_t old_lm_hash[16], new_lm_hash[16];
/* prepare connect to the SAMR pipe of the */
c.pdc.level = LIBNET_RPC_CONNECT_PDC;
c.pdc.in.domain_name = r->rpc.in.domain_name;
c.pdc.in.dcerpc_iface_name = DCERPC_SAMR_NAME;
c.pdc.in.dcerpc_iface_uuid = DCERPC_SAMR_UUID;
c.pdc.in.dcerpc_iface_version = DCERPC_SAMR_VERSION;
/* do connect to the SAMR pipe of the */
status = libnet_rpc_connect(ctx, mem_ctx, &c);
if (!NT_STATUS_IS_OK(status)) {
r->rpc.out.error_string = talloc_asprintf(mem_ctx,
"Connection to SAMR pipe of PDC of domain '%s' failed\n",
r->rpc.in.domain_name);
return status;
}
/* prepare password change for account */
server.name = talloc_asprintf(mem_ctx, "\\\\%s", dcerpc_server_name(c.pdc.out.dcerpc_pipe));
account.name = r->rpc.in.account_name;
E_md4hash(r->rpc.in.oldpassword, old_nt_hash);
E_md4hash(r->rpc.in.newpassword, new_nt_hash);
E_deshash(r->rpc.in.oldpassword, old_lm_hash);
E_deshash(r->rpc.in.newpassword, new_lm_hash);
encode_pw_buffer(lm_pass.data, r->rpc.in.newpassword, STR_UNICODE);
arcfour_crypt(lm_pass.data, old_nt_hash, 516);
E_old_pw_hash(new_lm_hash, old_lm_hash, lm_verifier.hash);
encode_pw_buffer(nt_pass.data, r->rpc.in.newpassword, STR_UNICODE);
arcfour_crypt(nt_pass.data, old_nt_hash, 516);
E_old_pw_hash(new_nt_hash, old_nt_hash, nt_verifier.hash);
pw3.in.server = &server;
pw3.in.account = &account;
pw3.in.nt_password = &nt_pass;
pw3.in.nt_verifier = &nt_verifier;
pw3.in.lm_change = 1;
pw3.in.lm_password = &lm_pass;
pw3.in.lm_verifier = &lm_verifier;
pw3.in.password3 = NULL;
/* do password change for account */
status = dcerpc_samr_ChangePasswordUser3(c.pdc.out.dcerpc_pipe, mem_ctx, &pw3);
if (!NT_STATUS_IS_OK(status)) {
r->rpc.out.error_string = talloc_asprintf(mem_ctx,
"ChangePassword3 failed: %s\n",nt_errstr(status));
goto disconnect;
}
/* check result of password change */
if (!NT_STATUS_IS_OK(pw3.out.result)) {
r->rpc.out.error_string = talloc_asprintf(mem_ctx,
"ChangePassword3 for '%s\\%s' failed: %s\n",
r->rpc.in.domain_name, r->rpc.in.account_name,
nt_errstr(status));
/* TODO: give the reason of the reject */
goto disconnect;
}
disconnect:
/* close connection */
dcerpc_pipe_close(c.pdc.out.dcerpc_pipe);
return status;
}
static NTSTATUS libnet_ChangePassword_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_ChangePassword *r)
{
NTSTATUS status;
union libnet_ChangePassword r2;
r2.rpc.level = LIBNET_CHANGE_PASSWORD_RPC;
r2.rpc.in.account_name = r->generic.in.account_name;
r2.rpc.in.domain_name = r->generic.in.domain_name;
r2.rpc.in.oldpassword = r->generic.in.oldpassword;
r2.rpc.in.newpassword = r->generic.in.newpassword;
status = libnet_ChangePassword(ctx, mem_ctx, &r2);
r->generic.out.error_string = r2.rpc.out.error_string;
return status;
}
NTSTATUS libnet_ChangePassword(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_ChangePassword *r)
{
switch (r->generic.level) {
case LIBNET_CHANGE_PASSWORD_GENERIC:
return libnet_ChangePassword_generic(ctx, mem_ctx, r);
case LIBNET_CHANGE_PASSWORD_RPC:
return libnet_ChangePassword_rpc(ctx, mem_ctx, r);
case LIBNET_CHANGE_PASSWORD_KRB5:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_CHANGE_PASSWORD_LDAP:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_CHANGE_PASSWORD_RAP:
return NT_STATUS_NOT_IMPLEMENTED;
}
return NT_STATUS_INVALID_LEVEL;
}
/*
* set a password with DCERPC/SAMR calls
*/
static NTSTATUS libnet_SetPassword_rpc(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SetPassword *r)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS libnet_SetPassword_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SetPassword *r)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
NTSTATUS libnet_SetPassword(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SetPassword *r)
{
switch (r->generic.level) {
case LIBNET_SET_PASSWORD_GENERIC:
return libnet_SetPassword_generic(ctx, mem_ctx, r);
case LIBNET_SET_PASSWORD_RPC:
return libnet_SetPassword_rpc(ctx, mem_ctx, r);
case LIBNET_SET_PASSWORD_KRB5:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_SET_PASSWORD_LDAP:
return NT_STATUS_NOT_IMPLEMENTED;
case LIBNET_SET_PASSWORD_RAP:
return NT_STATUS_NOT_IMPLEMENTED;
}
return NT_STATUS_INVALID_LEVEL;
}
|
