forked from SpiderLabs/Responder
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SMBPackets.py
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SMBPackets.py
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#! /usr/bin/env python
# NBT-NS/LLMNR Responder
# Created by Laurent Gaffie
# Copyright (C) 2014 Trustwave Holdings, Inc.
#
# 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 <http://www.gnu.org/licenses/>.
import struct
from odict import OrderedDict
class Packet():
fields = OrderedDict([
("data", ""),
])
def __init__(self, **kw):
self.fields = OrderedDict(self.__class__.fields)
for k,v in kw.items():
if callable(v):
self.fields[k] = v(self.fields[k])
else:
self.fields[k] = v
def __str__(self):
return "".join(map(str, self.fields.values()))
#Calculate total SMB packet len.
def longueur(payload):
length = struct.pack(">i", len(''.join(payload)))
return length
#Set MID SMB Header field.
def midcalc(data):
pack=data[34:36]
return pack
#Set UID SMB Header field.
def uidcalc(data):
pack=data[32:34]
return pack
#Set PID SMB Header field.
def pidcalc(data):
pack=data[30:32]
return pack
#Set TID SMB Header field.
def tidcalc(data):
pack=data[28:30]
return pack
##################################################################################
class SMBHeader(Packet):
fields = OrderedDict([
("proto", "\xff\x53\x4d\x42"),
("cmd", "\x72"),
("errorcode", "\x00\x00\x00\x00" ),
("flag1", "\x00"),
("flag2", "\x00\x00"),
("pidhigh", "\x00\x00"),
("signature", "\x00\x00\x00\x00\x00\x00\x00\x00"),
("reserved", "\x00\x00"),
("tid", "\x00\x00"),
("pid", "\x00\x00"),
("uid", "\x00\x00"),
("mid", "\x00\x00"),
])
##################################################################################
#SMB Negotiate Answer LM packet.
class SMBNegoAnsLM(Packet):
fields = OrderedDict([
("Wordcount", "\x11"),
("Dialect", ""),
("Securitymode", "\x03"),
("MaxMpx", "\x32\x00"),
("MaxVc", "\x01\x00"),
("Maxbuffsize", "\x04\x41\x00\x00"),
("Maxrawbuff", "\x00\x00\x01\x00"),
("Sessionkey", "\x00\x00\x00\x00"),
("Capabilities", "\xfc\x3e\x01\x00"),
("Systemtime", "\x84\xd6\xfb\xa3\x01\x35\xcd\x01"),
("Srvtimezone", "\x2c\x01"),
("Keylength", "\x08"),
("Bcc", "\x10\x00"),
("Key", ""),
("Domain", "SMB"),
("DomainNull", "\x00\x00"),
("Server", "SMB-TOOLKIT"),
("ServerNull", "\x00\x00"),
])
def calculate(self):
##Convert first..
self.fields["Domain"] = self.fields["Domain"].encode('utf-16le')
self.fields["Server"] = self.fields["Server"].encode('utf-16le')
##Then calculate.
CompleteBCCLen = str(self.fields["Key"])+str(self.fields["Domain"])+str(self.fields["DomainNull"])+str(self.fields["Server"])+str(self.fields["ServerNull"])
self.fields["Bcc"] = struct.pack("<h",len(CompleteBCCLen))
self.fields["Keylength"] = struct.pack("<h",len(self.fields["Key"]))[0]
##################################################################################
#SMB Negotiate Answer LM packet.
class SMBNegoAns(Packet):
fields = OrderedDict([
("Wordcount", "\x11"),
("Dialect", ""),
("Securitymode", "\x03"),
("MaxMpx", "\x32\x00"),
("MaxVc", "\x01\x00"),
("MaxBuffSize", "\x04\x41\x00\x00"),
("MaxRawBuff", "\x00\x00\x01\x00"),
("SessionKey", "\x00\x00\x00\x00"),
("Capabilities", "\xfd\xf3\x01\x80"),
("SystemTime", "\x84\xd6\xfb\xa3\x01\x35\xcd\x01"),
("SrvTimeZone", "\xf0\x00"),
("KeyLen", "\x00"),
("Bcc", "\x57\x00"),
("Guid", "\xc8\x27\x3d\xfb\xd4\x18\x55\x4f\xb2\x40\xaf\xd7\x61\x73\x75\x3b"),
("InitContextTokenASNId", "\x60"),
("InitContextTokenASNLen", "\x5b"),
("ThisMechASNId", "\x06"),
("ThisMechASNLen", "\x06"),
("ThisMechASNStr", "\x2b\x06\x01\x05\x05\x02"),
("SpNegoTokenASNId", "\xA0"),
("SpNegoTokenASNLen", "\x51"),
("NegTokenASNId", "\x30"),
("NegTokenASNLen", "\x4f"),
("NegTokenTag0ASNId", "\xA0"),
("NegTokenTag0ASNLen", "\x30"),
("NegThisMechASNId", "\x30"),
("NegThisMechASNLen", "\x2e"),
("NegThisMech4ASNId", "\x06"),
("NegThisMech4ASNLen", "\x09"),
("NegThisMech4ASNStr", "\x2b\x06\x01\x04\x01\x82\x37\x02\x02\x0a"),
("NegTokenTag3ASNId", "\xA3"),
("NegTokenTag3ASNLen", "\x1b"),
("NegHintASNId", "\x30"),
("NegHintASNLen", "\x19"),
("NegHintTag0ASNId", "\xa0"),
("NegHintTag0ASNLen", "\x17"),
("NegHintFinalASNId", "\x1b"),
("NegHintFinalASNLen", "\x15"),
("NegHintFinalASNStr", "server2008$@SMB.LOCAL"),
## END
])
def calculate(self):
CompleteBCCLen1 = str(self.fields["Guid"])+str(self.fields["InitContextTokenASNId"])+str(self.fields["InitContextTokenASNLen"])+str(self.fields["ThisMechASNId"])+str(self.fields["ThisMechASNLen"])+str(self.fields["ThisMechASNStr"])+str(self.fields["SpNegoTokenASNId"])+str(self.fields["SpNegoTokenASNLen"])+str(self.fields["NegTokenASNId"])+str(self.fields["NegTokenASNLen"])+str(self.fields["NegTokenTag0ASNId"])+str(self.fields["NegTokenTag0ASNLen"])+str(self.fields["NegThisMechASNId"])+str(self.fields["NegThisMechASNLen"])+str(self.fields["NegThisMech4ASNId"])+str(self.fields["NegThisMech4ASNLen"])+str(self.fields["NegThisMech4ASNStr"])+str(self.fields["NegTokenTag3ASNId"])+str(self.fields["NegTokenTag3ASNLen"])+str(self.fields["NegHintASNId"])+str(self.fields["NegHintASNLen"])+str(self.fields["NegHintTag0ASNId"])+str(self.fields["NegHintTag0ASNLen"])+str(self.fields["NegHintFinalASNId"])+str(self.fields["NegHintFinalASNLen"])+str(self.fields["NegHintFinalASNStr"])
AsnLenStart = str(self.fields["ThisMechASNId"])+str(self.fields["ThisMechASNLen"])+str(self.fields["ThisMechASNStr"])+str(self.fields["SpNegoTokenASNId"])+str(self.fields["SpNegoTokenASNLen"])+str(self.fields["NegTokenASNId"])+str(self.fields["NegTokenASNLen"])+str(self.fields["NegTokenTag0ASNId"])+str(self.fields["NegTokenTag0ASNLen"])+str(self.fields["NegThisMechASNId"])+str(self.fields["NegThisMechASNLen"])+str(self.fields["NegThisMech4ASNId"])+str(self.fields["NegThisMech4ASNLen"])+str(self.fields["NegThisMech4ASNStr"])+str(self.fields["NegTokenTag3ASNId"])+str(self.fields["NegTokenTag3ASNLen"])+str(self.fields["NegHintASNId"])+str(self.fields["NegHintASNLen"])+str(self.fields["NegHintTag0ASNId"])+str(self.fields["NegHintTag0ASNLen"])+str(self.fields["NegHintFinalASNId"])+str(self.fields["NegHintFinalASNLen"])+str(self.fields["NegHintFinalASNStr"])
AsnLen2 = str(self.fields["NegTokenASNId"])+str(self.fields["NegTokenASNLen"])+str(self.fields["NegTokenTag0ASNId"])+str(self.fields["NegTokenTag0ASNLen"])+str(self.fields["NegThisMechASNId"])+str(self.fields["NegThisMechASNLen"])+str(self.fields["NegThisMech4ASNId"])+str(self.fields["NegThisMech4ASNLen"])+str(self.fields["NegThisMech4ASNStr"])+str(self.fields["NegTokenTag3ASNId"])+str(self.fields["NegTokenTag3ASNLen"])+str(self.fields["NegHintASNId"])+str(self.fields["NegHintASNLen"])+str(self.fields["NegHintTag0ASNId"])+str(self.fields["NegHintTag0ASNLen"])+str(self.fields["NegHintFinalASNId"])+str(self.fields["NegHintFinalASNLen"])+str(self.fields["NegHintFinalASNStr"])
MechTypeLen = str(self.fields["NegThisMechASNId"])+str(self.fields["NegThisMechASNLen"])+str(self.fields["NegThisMech4ASNId"])+str(self.fields["NegThisMech4ASNLen"])+str(self.fields["NegThisMech4ASNStr"])
Tag3Len = str(self.fields["NegHintASNId"])+str(self.fields["NegHintASNLen"])+str(self.fields["NegHintTag0ASNId"])+str(self.fields["NegHintTag0ASNLen"])+str(self.fields["NegHintFinalASNId"])+str(self.fields["NegHintFinalASNLen"])+str(self.fields["NegHintFinalASNStr"])
self.fields["Bcc"] = struct.pack("<h",len(CompleteBCCLen1))
self.fields["InitContextTokenASNLen"] = struct.pack("<B", len(AsnLenStart))
self.fields["ThisMechASNLen"] = struct.pack("<B", len(str(self.fields["ThisMechASNStr"])))
self.fields["SpNegoTokenASNLen"] = struct.pack("<B", len(AsnLen2))
self.fields["NegTokenASNLen"] = struct.pack("<B", len(AsnLen2)-2)
self.fields["NegTokenTag0ASNLen"] = struct.pack("<B", len(MechTypeLen))
self.fields["NegThisMechASNLen"] = struct.pack("<B", len(MechTypeLen)-2)
self.fields["NegThisMech4ASNLen"] = struct.pack("<B", len(str(self.fields["NegThisMech4ASNStr"])))
self.fields["NegTokenTag3ASNLen"] = struct.pack("<B", len(Tag3Len))
self.fields["NegHintASNLen"] = struct.pack("<B", len(Tag3Len)-2)
self.fields["NegHintTag0ASNLen"] = struct.pack("<B", len(Tag3Len)-4)
self.fields["NegHintFinalASNLen"] = struct.pack("<B", len(str(self.fields["NegHintFinalASNStr"])))
################################################################################
class SMBSession1Data(Packet):
fields = OrderedDict([
("Wordcount", "\x04"),
("AndXCommand", "\xff"),
("Reserved", "\x00"),
("Andxoffset", "\x5f\x01"),
("Action", "\x00\x00"),
("SecBlobLen", "\xea\x00"),
("Bcc", "\x34\x01"),
("ChoiceTagASNId", "\xa1"),
("ChoiceTagASNLenOfLen", "\x81"),
("ChoiceTagASNIdLen", "\x00"),
("NegTokenTagASNId", "\x30"),
("NegTokenTagASNLenOfLen","\x81"),
("NegTokenTagASNIdLen", "\x00"),
("Tag0ASNId", "\xA0"),
("Tag0ASNIdLen", "\x03"),
("NegoStateASNId", "\x0A"),
("NegoStateASNLen", "\x01"),
("NegoStateASNValue", "\x01"),
("Tag1ASNId", "\xA1"),
("Tag1ASNIdLen", "\x0c"),
("Tag1ASNId2", "\x06"),
("Tag1ASNId2Len", "\x0A"),
("Tag1ASNId2Str", "\x2b\x06\x01\x04\x01\x82\x37\x02\x02\x0a"),
("Tag2ASNId", "\xA2"),
("Tag2ASNIdLenOfLen", "\x81"),
("Tag2ASNIdLen", "\xED"),
("Tag3ASNId", "\x04"),
("Tag3ASNIdLenOfLen", "\x81"),
("Tag3ASNIdLen", "\xEA"),
("NTLMSSPSignature", "NTLMSSP"),
("NTLMSSPSignatureNull", "\x00"),
("NTLMSSPMessageType", "\x02\x00\x00\x00"),
("NTLMSSPNtWorkstationLen","\x1e\x00"),
("NTLMSSPNtWorkstationMaxLen","\x1e\x00"),
("NTLMSSPNtWorkstationBuffOffset","\x38\x00\x00\x00"),
("NTLMSSPNtNegotiateFlags","\x15\x82\x89\xe2"),
("NTLMSSPNtServerChallenge","\x81\x22\x33\x34\x55\x46\xe7\x88"),
("NTLMSSPNtReserved","\x00\x00\x00\x00\x00\x00\x00\x00"),
("NTLMSSPNtTargetInfoLen","\x94\x00"),
("NTLMSSPNtTargetInfoMaxLen","\x94\x00"),
("NTLMSSPNtTargetInfoBuffOffset","\x56\x00\x00\x00"),
("NegTokenInitSeqMechMessageVersionHigh","\x05"),
("NegTokenInitSeqMechMessageVersionLow","\x02"),
("NegTokenInitSeqMechMessageVersionBuilt","\xce\x0e"),
("NegTokenInitSeqMechMessageVersionReserved","\x00\x00\x00"),
("NegTokenInitSeqMechMessageVersionNTLMType","\x0f"),
("NTLMSSPNtWorkstationName","SMB12"),
("NTLMSSPNTLMChallengeAVPairsId","\x02\x00"),
("NTLMSSPNTLMChallengeAVPairsLen","\x0a\x00"),
("NTLMSSPNTLMChallengeAVPairsUnicodeStr","smb12"),
("NTLMSSPNTLMChallengeAVPairs1Id","\x01\x00"),
("NTLMSSPNTLMChallengeAVPairs1Len","\x1e\x00"),
("NTLMSSPNTLMChallengeAVPairs1UnicodeStr","SERVER2008"),
("NTLMSSPNTLMChallengeAVPairs2Id","\x04\x00"),
("NTLMSSPNTLMChallengeAVPairs2Len","\x1e\x00"),
("NTLMSSPNTLMChallengeAVPairs2UnicodeStr","smb12.local"),
("NTLMSSPNTLMChallengeAVPairs3Id","\x03\x00"),
("NTLMSSPNTLMChallengeAVPairs3Len","\x1e\x00"),
("NTLMSSPNTLMChallengeAVPairs3UnicodeStr","SERVER2008.smb12.local"),
("NTLMSSPNTLMChallengeAVPairs5Id","\x05\x00"),
("NTLMSSPNTLMChallengeAVPairs5Len","\x04\x00"),
("NTLMSSPNTLMChallengeAVPairs5UnicodeStr","smb12.local"),
("NTLMSSPNTLMChallengeAVPairs6Id","\x00\x00"),
("NTLMSSPNTLMChallengeAVPairs6Len","\x00\x00"),
("NTLMSSPNTLMPadding", ""),
("NativeOs","Windows Server 2003 3790 Service Pack 2"),
("NativeOsTerminator","\x00\x00"),
("NativeLAN", "Windows Server 2003 5.2"),
("NativeLANTerminator","\x00\x00"),
])
def calculate(self):
##Convert strings to Unicode first...
self.fields["NTLMSSPNtWorkstationName"] = self.fields["NTLMSSPNtWorkstationName"].encode('utf-16le')
self.fields["NTLMSSPNTLMChallengeAVPairsUnicodeStr"] = self.fields["NTLMSSPNTLMChallengeAVPairsUnicodeStr"].encode('utf-16le')
self.fields["NTLMSSPNTLMChallengeAVPairs1UnicodeStr"] = self.fields["NTLMSSPNTLMChallengeAVPairs1UnicodeStr"].encode('utf-16le')
self.fields["NTLMSSPNTLMChallengeAVPairs2UnicodeStr"] = self.fields["NTLMSSPNTLMChallengeAVPairs2UnicodeStr"].encode('utf-16le')
self.fields["NTLMSSPNTLMChallengeAVPairs3UnicodeStr"] = self.fields["NTLMSSPNTLMChallengeAVPairs3UnicodeStr"].encode('utf-16le')
self.fields["NTLMSSPNTLMChallengeAVPairs5UnicodeStr"] = self.fields["NTLMSSPNTLMChallengeAVPairs5UnicodeStr"].encode('utf-16le')
self.fields["NativeOs"] = self.fields["NativeOs"].encode('utf-16le')
self.fields["NativeLAN"] = self.fields["NativeLAN"].encode('utf-16le')
###### SecBlobLen Calc:
AsnLen= str(self.fields["ChoiceTagASNId"])+str(self.fields["ChoiceTagASNLenOfLen"])+str(self.fields["ChoiceTagASNIdLen"])+str(self.fields["NegTokenTagASNId"])+str(self.fields["NegTokenTagASNLenOfLen"])+str(self.fields["NegTokenTagASNIdLen"])+str(self.fields["Tag0ASNId"])+str(self.fields["Tag0ASNIdLen"])+str(self.fields["NegoStateASNId"])+str(self.fields["NegoStateASNLen"])+str(self.fields["NegoStateASNValue"])+str(self.fields["Tag1ASNId"])+str(self.fields["Tag1ASNIdLen"])+str(self.fields["Tag1ASNId2"])+str(self.fields["Tag1ASNId2Len"])+str(self.fields["Tag1ASNId2Str"])+str(self.fields["Tag2ASNId"])+str(self.fields["Tag2ASNIdLenOfLen"])+str(self.fields["Tag2ASNIdLen"])+str(self.fields["Tag3ASNId"])+str(self.fields["Tag3ASNIdLenOfLen"])+str(self.fields["Tag3ASNIdLen"])
CalculateSecBlob = str(self.fields["NTLMSSPSignature"])+str(self.fields["NTLMSSPSignatureNull"])+str(self.fields["NTLMSSPMessageType"])+str(self.fields["NTLMSSPNtWorkstationLen"])+str(self.fields["NTLMSSPNtWorkstationMaxLen"])+str(self.fields["NTLMSSPNtWorkstationBuffOffset"])+str(self.fields["NTLMSSPNtNegotiateFlags"])+str(self.fields["NTLMSSPNtServerChallenge"])+str(self.fields["NTLMSSPNtReserved"])+str(self.fields["NTLMSSPNtTargetInfoLen"])+str(self.fields["NTLMSSPNtTargetInfoMaxLen"])+str(self.fields["NTLMSSPNtTargetInfoBuffOffset"])+str(self.fields["NegTokenInitSeqMechMessageVersionHigh"])+str(self.fields["NegTokenInitSeqMechMessageVersionLow"])+str(self.fields["NegTokenInitSeqMechMessageVersionBuilt"])+str(self.fields["NegTokenInitSeqMechMessageVersionReserved"])+str(self.fields["NegTokenInitSeqMechMessageVersionNTLMType"])+str(self.fields["NTLMSSPNtWorkstationName"])+str(self.fields["NTLMSSPNTLMChallengeAVPairsId"])+str(self.fields["NTLMSSPNTLMChallengeAVPairsLen"])+str(self.fields["NTLMSSPNTLMChallengeAVPairsUnicodeStr"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs1Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs1Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs1UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs2Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs2Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs2UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs3Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs3Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs3UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs5Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs5Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs5UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs6Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs6Len"])
##### Bcc len
BccLen = AsnLen+CalculateSecBlob+str(self.fields["NTLMSSPNTLMPadding"])+str(self.fields["NativeOs"])+str(self.fields["NativeOsTerminator"])+str(self.fields["NativeLAN"])+str(self.fields["NativeLANTerminator"])
#SecBlobLen
self.fields["SecBlobLen"] = struct.pack("<h", len(AsnLen+CalculateSecBlob))
self.fields["Bcc"] = struct.pack("<h", len(BccLen))
self.fields["ChoiceTagASNIdLen"] = struct.pack(">B", len(AsnLen+CalculateSecBlob)-3)
self.fields["NegTokenTagASNIdLen"] = struct.pack(">B", len(AsnLen+CalculateSecBlob)-6)
self.fields["Tag1ASNIdLen"] = struct.pack(">B", len(str(self.fields["Tag1ASNId2"])+str(self.fields["Tag1ASNId2Len"])+str(self.fields["Tag1ASNId2Str"])))
self.fields["Tag1ASNId2Len"] = struct.pack(">B", len(str(self.fields["Tag1ASNId2Str"])))
self.fields["Tag2ASNIdLen"] = struct.pack(">B", len(CalculateSecBlob+str(self.fields["Tag3ASNId"])+str(self.fields["Tag3ASNIdLenOfLen"])+str(self.fields["Tag3ASNIdLen"])))
self.fields["Tag3ASNIdLen"] = struct.pack(">B", len(CalculateSecBlob))
###### Andxoffset calculation.
CalculateCompletePacket = str(self.fields["Wordcount"])+str(self.fields["AndXCommand"])+str(self.fields["Reserved"])+str(self.fields["Andxoffset"])+str(self.fields["Action"])+str(self.fields["SecBlobLen"])+str(self.fields["Bcc"])+BccLen
self.fields["Andxoffset"] = struct.pack("<h", len(CalculateCompletePacket)+32)
###### Workstation Offset
CalculateOffsetWorkstation = str(self.fields["NTLMSSPSignature"])+str(self.fields["NTLMSSPSignatureNull"])+str(self.fields["NTLMSSPMessageType"])+str(self.fields["NTLMSSPNtWorkstationLen"])+str(self.fields["NTLMSSPNtWorkstationMaxLen"])+str(self.fields["NTLMSSPNtWorkstationBuffOffset"])+str(self.fields["NTLMSSPNtNegotiateFlags"])+str(self.fields["NTLMSSPNtServerChallenge"])+str(self.fields["NTLMSSPNtReserved"])+str(self.fields["NTLMSSPNtTargetInfoLen"])+str(self.fields["NTLMSSPNtTargetInfoMaxLen"])+str(self.fields["NTLMSSPNtTargetInfoBuffOffset"])+str(self.fields["NegTokenInitSeqMechMessageVersionHigh"])+str(self.fields["NegTokenInitSeqMechMessageVersionLow"])+str(self.fields["NegTokenInitSeqMechMessageVersionBuilt"])+str(self.fields["NegTokenInitSeqMechMessageVersionReserved"])+str(self.fields["NegTokenInitSeqMechMessageVersionNTLMType"])
###### AvPairs Offset
CalculateLenAvpairs = str(self.fields["NTLMSSPNTLMChallengeAVPairsId"])+str(self.fields["NTLMSSPNTLMChallengeAVPairsLen"])+str(self.fields["NTLMSSPNTLMChallengeAVPairsUnicodeStr"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs1Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs1Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs1UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs2Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs2Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs2UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs3Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs3Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs3UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs5Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs5Len"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs5UnicodeStr"])+(self.fields["NTLMSSPNTLMChallengeAVPairs6Id"])+str(self.fields["NTLMSSPNTLMChallengeAVPairs6Len"])
##### Workstation Offset Calculation:
self.fields["NTLMSSPNtWorkstationBuffOffset"] = struct.pack("<i", len(CalculateOffsetWorkstation))
self.fields["NTLMSSPNtWorkstationLen"] = struct.pack("<h", len(str(self.fields["NTLMSSPNtWorkstationName"])))
self.fields["NTLMSSPNtWorkstationMaxLen"] = struct.pack("<h", len(str(self.fields["NTLMSSPNtWorkstationName"])))
##### IvPairs Offset Calculation:
self.fields["NTLMSSPNtTargetInfoBuffOffset"] = struct.pack("<i", len(CalculateOffsetWorkstation+str(self.fields["NTLMSSPNtWorkstationName"])))
self.fields["NTLMSSPNtTargetInfoLen"] = struct.pack("<h", len(CalculateLenAvpairs))
self.fields["NTLMSSPNtTargetInfoMaxLen"] = struct.pack("<h", len(CalculateLenAvpairs))
##### IvPair Calculation:
self.fields["NTLMSSPNTLMChallengeAVPairs5Len"] = struct.pack("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairs5UnicodeStr"])))
self.fields["NTLMSSPNTLMChallengeAVPairs3Len"] = struct.pack("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairs3UnicodeStr"])))
self.fields["NTLMSSPNTLMChallengeAVPairs2Len"] = struct.pack("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairs2UnicodeStr"])))
self.fields["NTLMSSPNTLMChallengeAVPairs1Len"] = struct.pack("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairs1UnicodeStr"])))
self.fields["NTLMSSPNTLMChallengeAVPairsLen"] = struct.pack("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairsUnicodeStr"])))
##################################################################################
class SMBSession2Accept(Packet):
fields = OrderedDict([
("Wordcount", "\x04"),
("AndXCommand", "\xff"),
("Reserved", "\x00"),
("Andxoffset", "\xb4\x00"),
("Action", "\x00\x00"),
("SecBlobLen", "\x09\x00"),
("Bcc", "\x89\x01"),
("SSPIAccept","\xa1\x07\x30\x05\xa0\x03\x0a\x01\x00"),
("NativeOs","Windows Server 2003 3790 Service Pack 2"),
("NativeOsTerminator","\x00\x00"),
("NativeLAN", "Windows Server 2003 5.2"),
("NativeLANTerminator","\x00\x00"),
])
def calculate(self):
self.fields["NativeOs"] = self.fields["NativeOs"].encode('utf-16le')
self.fields["NativeLAN"] = self.fields["NativeLAN"].encode('utf-16le')
BccLen = str(self.fields["SSPIAccept"])+str(self.fields["NativeOs"])+str(self.fields["NativeOsTerminator"])+str(self.fields["NativeLAN"])+str(self.fields["NativeLANTerminator"])
self.fields["Bcc"] = struct.pack("<h", len(BccLen))
class SMBSessEmpty(Packet):
fields = OrderedDict([
("Empty", "\x00\x00\x00"),
])
class SMBTreeData(Packet):
fields = OrderedDict([
("Wordcount", "\x07"),
("AndXCommand", "\xff"),
("Reserved","\x00" ),
("Andxoffset", "\xbd\x00"),
("OptionalSupport","\x00\x00"),
("MaxShareAccessRight","\x00\x00\x00\x00"),
("GuestShareAccessRight","\x00\x00\x00\x00"),
("Bcc", "\x94\x00"),
("Service", "IPC"),
("ServiceTerminator","\x00\x00\x00\x00"),
])
def calculate(self):
#Complete Packet Len
CompletePacket= str(self.fields["Wordcount"])+str(self.fields["AndXCommand"])+str(self.fields["Reserved"])+str(self.fields["Andxoffset"])+str(self.fields["OptionalSupport"])+str(self.fields["MaxShareAccessRight"])+str(self.fields["GuestShareAccessRight"])+str(self.fields["Bcc"])+str(self.fields["Service"])+str(self.fields["ServiceTerminator"])
## AndXOffset
self.fields["Andxoffset"] = struct.pack("<H", len(CompletePacket)+32)
## BCC Len Calc
BccLen= str(self.fields["Service"])+str(self.fields["ServiceTerminator"])
self.fields["Bcc"] = struct.pack("<H", len(BccLen))
# SMB Session/Tree Answer.
class SMBSessTreeAns(Packet):
fields = OrderedDict([
("Wordcount", "\x03"),
("Command", "\x75"),
("Reserved", "\x00"),
("AndXoffset", "\x4e\x00"),
("Action", "\x01\x00"),
("Bcc", "\x25\x00"),
("NativeOs", "Windows 5.1"),
("NativeOsNull", "\x00"),
("NativeLan", "Windows 2000 LAN Manager"),
("NativeLanNull", "\x00"),
("WordcountTree", "\x03"),
("AndXCommand", "\xff"),
("Reserved1", "\x00"),
("AndxOffset", "\x00\x00"),
("OptionalSupport", "\x01\x00"),
("Bcc2", "\x08\x00"),
("Service", "A:"),
("ServiceNull", "\x00"),
("FileSystem", "NTFS"),
("FileSystemNull", "\x00"),
])
def calculate(self):
##AndxOffset
CalculateCompletePacket = str(self.fields["Wordcount"])+str(self.fields["Command"])+str(self.fields["Reserved"])+str(self.fields["AndXoffset"])+str(self.fields["Action"])+str(self.fields["Bcc"])+str(self.fields["NativeOs"])+str(self.fields["NativeOsNull"])+str(self.fields["NativeLan"])+str(self.fields["NativeLanNull"])
self.fields["AndXoffset"] = struct.pack("<i", len(CalculateCompletePacket)+32)[:2]
##BCC 1 and 2
CompleteBCCLen = str(self.fields["NativeOs"])+str(self.fields["NativeOsNull"])+str(self.fields["NativeLan"])+str(self.fields["NativeLanNull"])
self.fields["Bcc"] = struct.pack("<h",len(CompleteBCCLen))
CompleteBCC2Len = str(self.fields["Service"])+str(self.fields["ServiceNull"])+str(self.fields["FileSystem"])+str(self.fields["FileSystemNull"])
self.fields["Bcc2"] = struct.pack("<h",len(CompleteBCC2Len))