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159
HTTPPackets.py
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159
HTTPPackets.py
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#! /usr/bin/env python
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# NBT-NS/LLMNR Responder
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# Created by Laurent Gaffie
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# Copyright (C) 2013 Trustwave Holdings, Inc.
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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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import struct
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from odict import OrderedDict
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from base64 import b64decode,b64encode
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class Packet():
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fields = OrderedDict([
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("data", ""),
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])
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def __init__(self, **kw):
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self.fields = OrderedDict(self.__class__.fields)
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for k,v in kw.items():
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if callable(v):
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self.fields[k] = v(self.fields[k])
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else:
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self.fields[k] = v
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def __str__(self):
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return "".join(map(str, self.fields.values()))
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#HTTP Packet used for further NTLM auth.
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class IIS_Auth_401_Ans(Packet):
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fields = OrderedDict([
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("Code", "HTTP/1.1 401 Unauthorized\r\n"),
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("ServerType", "Server: Microsoft-IIS/6.0\r\n"),
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("Date", "Date: Wed, 12 Sep 2012 13:06:55 GMT\r\n"),
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("Type", "Content-Type: text/html\r\n"),
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("WWW-Auth", "WWW-Authenticate: NTLM\r\n"),
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("PoweredBy", "X-Powered-By: ASP.NET\r\n"),
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("Len", "Content-Length: 0\r\n"),
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("CRLF", "\r\n"),
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])
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#HTTP Packet Granted auth.
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class IIS_Auth_Granted(Packet):
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fields = OrderedDict([
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("Code", "HTTP/1.1 200 OK\r\n"),
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("ServerType", "Server: Microsoft-IIS/6.0\r\n"),
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("Date", "Date: Wed, 12 Sep 2012 13:06:55 GMT\r\n"),
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("Type", "Content-Type: text/html\r\n"),
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("WWW-Auth", "WWW-Authenticate: NTLM\r\n"),
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("PoweredBy", "X-Powered-By: ASP.NET\r\n"),
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("Len", "Content-Length: 0\r\n"),
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("CRLF", "\r\n"),
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])
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#HTTP NTLM Auth
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class NTLM_Challenge(Packet):
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fields = OrderedDict([
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("Signature", "NTLMSSP"),
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("SignatureNull", "\x00"),
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("MessageType", "\x02\x00\x00\x00"),
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("TargetNameLen", "\x06\x00"),
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("TargetNameMaxLen", "\x06\x00"),
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("TargetNameOffset", "\x38\x00\x00\x00"),
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("NegoFlags", "\x05\x02\x89\xa2"),
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("ServerChallenge", ""),
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("Reserved", "\x00\x00\x00\x00\x00\x00\x00\x00"),
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("TargetInfoLen", "\x7e\x00"),
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("TargetInfoMaxLen", "\x7e\x00"),
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("TargetInfoOffset", "\x3e\x00\x00\x00"),
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("NTLMOsVersion", "\x05\x02\xce\x0e\x00\x00\x00\x0f"),
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("TargetNameStr", "SMB"),
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("Av1", "\x02\x00"),#nbt name
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("Av1Len", "\x06\x00"),
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("Av1Str", "SMB"),
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("Av2", "\x01\x00"),#Server name
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("Av2Len", "\x14\x00"),
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("Av2Str", "SMB-TOOLKIT"),
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("Av3", "\x04\x00"),#Full Domain name
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("Av3Len", "\x12\x00"),
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("Av3Str", "smb.local"),
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("Av4", "\x03\x00"),#Full machine domain name
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("Av4Len", "\x28\x00"),
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("Av4Str", "server2003.smb.local"),
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("Av5", "\x05\x00"),#Domain Forest Name
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("Av5Len", "\x12\x00"),
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("Av5Str", "smb.local"),
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("Av6", "\x00\x00"),#AvPairs Terminator
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("Av6Len", "\x00\x00"),
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])
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def calculate(self):
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##First convert to uni
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self.fields["TargetNameStr"] = self.fields["TargetNameStr"].encode('utf-16le')
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self.fields["Av1Str"] = self.fields["Av1Str"].encode('utf-16le')
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self.fields["Av2Str"] = self.fields["Av2Str"].encode('utf-16le')
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self.fields["Av3Str"] = self.fields["Av3Str"].encode('utf-16le')
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self.fields["Av4Str"] = self.fields["Av4Str"].encode('utf-16le')
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self.fields["Av5Str"] = self.fields["Av5Str"].encode('utf-16le')
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##Then calculate
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CalculateNameOffset = str(self.fields["Signature"])+str(self.fields["SignatureNull"])+str(self.fields["MessageType"])+str(self.fields["TargetNameLen"])+str(self.fields["TargetNameMaxLen"])+str(self.fields["TargetNameOffset"])+str(self.fields["NegoFlags"])+str(self.fields["ServerChallenge"])+str(self.fields["Reserved"])+str(self.fields["TargetInfoLen"])+str(self.fields["TargetInfoMaxLen"])+str(self.fields["TargetInfoOffset"])+str(self.fields["NTLMOsVersion"])
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CalculateAvPairsOffset = CalculateNameOffset+str(self.fields["TargetNameStr"])
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CalculateAvPairsLen = str(self.fields["Av1"])+str(self.fields["Av1Len"])+str(self.fields["Av1Str"])+str(self.fields["Av2"])+str(self.fields["Av2Len"])+str(self.fields["Av2Str"])+str(self.fields["Av3"])+str(self.fields["Av3Len"])+str(self.fields["Av3Str"])+str(self.fields["Av4"])+str(self.fields["Av4Len"])+str(self.fields["Av4Str"])+str(self.fields["Av5"])+str(self.fields["Av5Len"])+str(self.fields["Av5Str"])+str(self.fields["Av6"])+str(self.fields["Av6Len"])
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# Target Name Offsets
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self.fields["TargetNameOffset"] = struct.pack("<i", len(CalculateNameOffset))
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self.fields["TargetNameLen"] = struct.pack("<i", len(self.fields["TargetNameStr"]))[:2]
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self.fields["TargetNameMaxLen"] = struct.pack("<i", len(self.fields["TargetNameStr"]))[:2]
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#AvPairs Offsets
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self.fields["TargetInfoOffset"] = struct.pack("<i", len(CalculateAvPairsOffset))
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self.fields["TargetInfoLen"] = struct.pack("<i", len(CalculateAvPairsLen))[:2]
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self.fields["TargetInfoMaxLen"] = struct.pack("<i", len(CalculateAvPairsLen))[:2]
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#AvPairs StrLen
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self.fields["Av1Len"] = struct.pack("<i", len(str(self.fields["Av1Str"])))[:2]
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self.fields["Av2Len"] = struct.pack("<i", len(str(self.fields["Av2Str"])))[:2]
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self.fields["Av3Len"] = struct.pack("<i", len(str(self.fields["Av3Str"])))[:2]
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self.fields["Av4Len"] = struct.pack("<i", len(str(self.fields["Av4Str"])))[:2]
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self.fields["Av5Len"] = struct.pack("<i", len(str(self.fields["Av5Str"])))[:2]
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#HTTP NTLM packet.
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class IIS_NTLM_Challenge_Ans(Packet):
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fields = OrderedDict([
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("Code", "HTTP/1.1 401 Unauthorized\r\n"),
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("ServerType", "Server: Microsoft-IIS/6.0\r\n"),
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("Date", "Date: Wed, 12 Sep 2012 13:06:55 GMT\r\n"),
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("Type", "Content-Type: text/html\r\n"),
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("WWWAuth", "WWW-Authenticate: NTLM "),
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("Payload", ""),
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("Payload-CRLF", "\r\n"),
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("PoweredBy", "X-Powered-By: ASP.NC0CD7B7802C76736E9B26FB19BEB2D36290B9FF9A46EDDA5ET\r\n"),
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("Len", "Content-Length: 0\r\n"),
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("CRLF", "\r\n"),
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])
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def calculate(self,payload):
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self.fields["Payload"] = b64encode(payload)
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#HTTP Basic answer packet.
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class IIS_Basic_401_Ans(Packet):
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fields = OrderedDict([
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("Code", "HTTP/1.1 401 Unauthorized\r\n"),
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("ServerType", "Server: Microsoft-IIS/6.0\r\n"),
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("Date", "Date: Wed, 12 Sep 2012 13:06:55 GMT\r\n"),
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("Type", "Content-Type: text/html\r\n"),
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("WWW-Auth", "WWW-Authenticate: Basic realm=''\r\n"),
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("PoweredBy", "X-Powered-By: ASP.NET\r\n"),
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("Len", "Content-Length: 0\r\n"),
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("CRLF", "\r\n"),
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])
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