#!/usr/bin/python
### sniffer
import pcapy
from impacket.ImpactDecoder import *

def printpkts(hdr, data):
    x = ICMPDecoder().decode(data)
    ### print x # print entire packet
    y = x.get_data_as_string()
    if y[34] == '@':
       print y[35:]

def get_int():
    devs = pcapy.findalldevs()
    i=0
    for eth in devs:
        print " %d - %s" %(i,devs[i])
        i+=1
    sel=input(" Select interface: ")
    dev=devs[sel]
    return dev

dev = get_int()
p = pcapy.open_live(dev, 1500, 0, 100)
p.setfilter('icmp')
print "Listening on eth: net=%s, mask=%s\n" % (p.getnet(), p.getmask())
p.loop(-1, printpkts)