# coding=utf-8
import socket
from scapy.all import *
class Autoconf :
def __init__(self):
self.hostmac = ""
self.hostip = ""
self.conf = True
self.ifaceHost = "em1"
self.ifaceNetwork = "eth0"
self.sockHost = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.ntohs(0x0003))
self.sockNetwork = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.ntohs(0x0003))
try:
self.sockHost.bind((self.ifaceHost, 0))
self.sockNetwork.bind((self.ifaceNetwork, 0))
except:
#exit("You need 2 physical network interfaces to use FENRIR !")
print("You need 2 physical network interfaces to use FENRIR !")
self.inputs = [self.sockHost, self.sockNetwork]
def startAutoconf(self):
print "Trying to detect @mac and @ip of spoofed host..."
while self.conf == True :
try:
inputready,outputready,exceptready = select.select(self.inputs, [], [])
except select.error, e:
break
except socket.error, e:
break
for socketReady in inputready :
#We check packets from iface1 and fwd them to iface2
if socketReady == self.sockHost :
packet = self.sockHost.recvfrom(1500)
pkt = packet[0]
dpkt = Ether(packet[0])
if 'ARP' in dpkt :
self.hostmac = dpkt[Ether].src
elif 'IP' in dpkt :
self.hostip = dpkt[IP].src
self.hostmac = dpkt[Ether].src
#We send the packet to the other interface
self.sockNetwork.send(pkt)
#We forward packet from iface2 to iface1
if socketReady == self.sockNetwork :
packet = self.sockNetwork.recvfrom(1500)
pkt = packet[0]
self.sockHost.send(pkt)
if self.hostip != "" and self.hostmac != "" :
#self.conf = False
return self.hostip, self.hostmac
