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import dcerpc
def sid_to_string(sid):
"""Convert a Python dictionary SID to a string SID."""
result = 'S-%d' % sid['sid_rev_num']
ia = sid['id_auth']
result = result + '-%u' % (ia[5] + (ia[4] << 8) + (ia[3] << 16) + \
(ia[2] << 24))
for i in range(0, sid['num_auths']):
result = result + '-%u' % sid['sub_auths'][i]
return result
def string_to_sid(string):
"""Convert a string SID to a Python dictionary SID. Throws a
ValueError if the SID string was badly formed."""
if string[0] != 'S':
raise ValueError('Bad SID format')
string = string[1:]
import re
match = re.match('-\d+', string)
if not match:
raise ValueError('Bad SID format')
try:
sid_rev_num = int(string[match.start()+1:match.end()])
except ValueError:
raise ValueError('Bad SID format')
string = string[match.end():]
match = re.match('-\d+', string)
if not match:
raise ValueError('Bad SID format')
try:
ia = int(string[match.start()+1:match.end()])
except ValueError:
raise ValueError('Bad SID format')
string = string[match.end():]
id_auth = [0, 0, (ia >> 24) & 0xff, (ia >> 16) & 0xff,
(ia >> 8) & 0xff, ia & 0xff]
num_auths = 0
sub_auths = []
while len(string):
match = re.match('-\d+', string)
if not match:
raise ValueError('Bad SID format')
try:
sa = int(string[match.start() + 1 : match.end()])
except ValueError:
raise ValueError('Bad SID format')
num_auths = num_auths + 1
sub_auths.append(int(sa))
string = string[match.end():]
return {'sid_rev_num': sid_rev_num, 'id_auth': id_auth,
'num_auths': num_auths, 'sub_auths': sub_auths}
class SamrHandle:
def __init__(self, pipe, handle):
self.pipe = pipe
self.handle = handle
def __del__(self):
r = {}
r['handle'] = self.handle
dcerpc.samr_Close(self.pipe, r)
class ConnectHandle(SamrHandle):
def EnumDomains(self):
r = {}
r['connect_handle'] = self.handle
r['resume_handle'] = 0
r['buf_size'] = -1
domains = []
while 1:
result = dcerpc.samr_EnumDomains(self.pipe, r)
domains = domains + result['sam']['entries']
if result['result'] == dcerpc.STATUS_MORE_ENTRIES:
r['resume_handle'] = result['resume_handle']
continue
break
return map(lambda x: x['name']['name'], domains)
def LookupDomain(self, domain_name):
r = {}
r['connect_handle'] = self.handle
r['domain'] = {}
r['domain']['name_len'] = 0
r['domain']['name_size'] = 0
r['domain']['name'] = domain_name
result = dcerpc.samr_LookupDomain(self.pipe, r)
return sid_to_string(result['sid'])
def OpenDomain(self, domain_sid, access_mask = 0x02000000):
r = {}
r['connect_handle'] = self.handle
r['access_mask'] = access_mask
r['sid'] = string_to_sid(domain_sid)
result = dcerpc.samr_OpenDomain(self.pipe, r)
return DomainHandle(self.pipe, result['domain_handle'])
class DomainHandle(SamrHandle):
def QueryDomainInfo(self, level = 2):
r = {}
r['domain_handle'] = self.handle
r['level'] = level
result = dcerpc.samr_QueryDomainInfo(self.pipe, r)
return result
def QueryDomainInfo2(self, level = 2):
r = {}
r['domain_handle'] = self.handle
r['level'] = level
result = dcerpc.samr_QueryDomainInfo2(self.pipe, r)
return result
def EnumDomainGroups(self):
r = {}
r['domain_handle'] = self.handle
r['resume_handle'] = 0
r['max_size'] = 1000
result = dcerpc.samr_EnumDomainGroups(self.pipe, r)
return result
def EnumDomainAliases(self):
r = {}
r['domain_handle'] = self.handle
r['resume_handle'] = 0
# acct_flags in SamrEnumerateAliasesInDomain has probably
# no meaning so use 0xffffffff like W2K
r['acct_flags'] = 0xffffffff
result = dcerpc.samr_EnumDomainAliases(self.pipe, r)
return result
def EnumDomainUsers(self, user_account_flags = 16):
r = {}
r['domain_handle'] = self.handle
r['resume_handle'] = 0
r['acct_flags'] = user_account_flags
r['max_size'] = 1000
result = dcerpc.samr_EnumDomainUsers(self.pipe, r)
return result
def Connect(pipe, system_name = None, access_mask = 0x02000000):
"""Connect to the SAMR pipe."""
r = {}
r['system_name'] = system_name
r['access_mask'] = access_mask
result = dcerpc.samr_Connect2(pipe, r)
return ConnectHandle(pipe, result['connect_handle'])
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