Sniff MAC addresses

sniffmacs.py

#! /usr/bin/env python

from scapy.all import *
import sys

macs = set()
routerprefix = "00:24:6c"

try:
    print "Importing from " + sys.argv[1]
    savefile = open(sys.argv[1],"r")
    for mac in savefile:
        print mac
        macs.add(mac)
    print "Imported " + str(len(macs)) + " entries"
    savefile.close()
except:
    if len(sys.argv) > 1:
        print sys.argv[1] + " not found. Creating new save file"
    else:
        print "Oops! You didn't specify a save file. please do so like this: "
        print sys.argv[0] + " <filename>"


def hax(x):
    try:
        output = open(sys.argv[1],"a")
        if x['RadioTap dummy'].addr1 not in macs:
            if ":".join(x['RadioTap dummy'].addr1.split(":")[0:3]) != routerprefix:
                print x['RadioTap dummy'].addr1
                macs.add(x['RadioTap dummy'].addr1)
                output.write(x['RadioTap dummy'].addr1 + "\n")
        if x['RadioTap dummy'].addr2 not in macs:
            if ":".join(x['RadioTap dummy'].addr2.split(":")[0:3]) != routerprefix:
                print x['RadioTap dummy'].addr2
                macs.add(x['RadioTap dummy'].addr2)
                output.write(x['RadioTap dummy'].addr2 + "\n")
        if x['RadioTap dummy'].addr3 not in macs:
            if ":".join(x['RadioTap dummy'].addr3.split(":")[0:3]) != routerprefix:
                print x['RadioTap dummy'].addr3
                macs.add(x['RadioTap dummy'].addr3)
                output.write(x['RadioTap dummy'].addr3 + "\n")
        output.close()
    except:
        print "fuck!"

sniff(iface="mon0",prn=lambda x:hax(x))

validmac.py

#!/usr/bin/env python
from subprocess import call, Popen, PIPE
import random
import os

# This script changes the MAC address of iface to a random	#
# one selected from the maclist file. It was originally		#
# designed to combat potential monitoring by my University,	#
# which requires that all MAC addresses connected to the wifi	#
# be registered to a person. Unfortunately for them, it's quite	#
# easy to switch MAC addresses.					#

def changemac(maclist, iface):
    DN = open(os.devnull, 'w')					# /dev/null for sending shit
    macs = open(maclist).read().split("\n")			# Open the file and spilt by new line
    newmac = macs[random.randint(0, len(macs)-1)]		# pick a random MAC address
    call(['ifconfig', iface, 'down'])				# Take the interface down
    proc = Popen(['ifconfig', iface, 'hw', 'ether', newmac], stdout=PIPE, stderr=DN)
    proc.wait()							# Change the MAC
    call(['ifconfig', iface, 'up'], stdout=DN, stderr=DN)	# Then bring the interface back up
    return newmac						# Return the new MAC address

if __name__ == "__main__":
    print "Changed the MAC address to " + changemac("MACs.txt","wlan0")

Cactus