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Replace ParseSMB2NTLMv2Hash() by ParseSMBHash() to handle NTLMv1 and NTLMv2

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Clément Notin 2019-01-09 19:16:52 +01:00 • committed by GitHub
parent 38e721da98
commit c99c9edf19
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1 changed files with 1 additions and 27 deletions
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28
servers/SMB.py
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@ -135,32 +135,6 @@ def ParseSMBHash(data,client, Challenge): #Parse SMB NTLMSSP v1/v2
'fullhash': WriteHash,
})
def ParseSMB2NTLMv2Hash(data,client, Challenge): #Parse SMB NTLMv2
SSPIStart = data[113:]
data = data[113:]
LMhashLen = struct.unpack('<H',data[12:14])[0]
LMhashOffset = struct.unpack('<H',data[16:18])[0]
LMHash = SSPIStart[LMhashOffset:LMhashOffset+LMhashLen].encode("hex").upper()
NthashLen = struct.unpack('<H',data[22:24])[0]
NthashOffset = struct.unpack('<H',data[24:26])[0]
SMBHash = SSPIStart[NthashOffset:NthashOffset+NthashLen].encode("hex").upper()
DomainLen = struct.unpack('<H',data[30:32])[0]
DomainOffset = struct.unpack('<H',data[32:34])[0]
Domain = SSPIStart[DomainOffset:DomainOffset+DomainLen].decode('UTF-16LE')
UserLen = struct.unpack('<H',data[38:40])[0]
UserOffset = struct.unpack('<H',data[40:42])[0]
Username = SSPIStart[UserOffset:UserOffset+UserLen].decode('UTF-16LE')
WriteHash = '%s::%s:%s:%s:%s' % (Username, Domain, Challenge.encode('hex'), SMBHash[:32], SMBHash[32:])
SaveToDb({
'module': 'SMBv2',
'type': 'NTLMv2-SSP',
'client': client,
'user': Domain+'\\'+Username,
'hash': SMBHash,
'fullhash': WriteHash,
})
def ParseLMNTHash(data, client, Challenge): # Parse SMB NTLMv1/v2
LMhashLen = struct.unpack('<H',data[51:53])[0]
NthashLen = struct.unpack('<H',data[53:55])[0]
@ -263,7 +237,7 @@ class SMB1(BaseRequestHandler): # SMB1 & SMB2 Server class, NTLMSSP
data = self.request.recv(1024)
## Session Setup 3 answer SMBv2.
if data[16:18] == "\x01\x00" and GrabMessageID(data)[0:1] == "\x02" and data[4:5] == "\xfe":
ParseSMB2NTLMv2Hash(data, self.client_address[0], Challenge)
ParseSMBHash(data, self.client_address[0], Challenge)
head = SMB2Header(Cmd="\x01\x00", MessageId=GrabMessageID(data), PID="\xff\xfe\x00\x00", CreditCharge=GrabCreditCharged(data), Credits=GrabCreditRequested(data), NTStatus="\x22\x00\x00\xc0", SessionID=GrabSessionID(data))
t = SMB2Session2Data()
packet1 = str(head)+str(t)