mac_changer.py

#!/bin/env python

import subprocess
import optparse
import re
def get_arguments():
    parser = optparse.OptionParser()
    parser.add_option("-i", "--Interface", dest="interface", help="Interface to change MAC address")
    parser.add_option("-m", "--mac", dest="new_mac", help="New MAC address")
    (options, arguments) = parser.parse_args()
    if not options.interface:
        parser.error("[-] Please specify Interface use --help for more info. ")
    elif not options.new_mac:
        parser.error("[-] Please specify new MAC use --help for more info. ")
    return options
    return parser.parse_args()

def change_mac(interface,new_mac):
    print("[+] Changing MAC Address for " + interface + " to " + new_mac)
    subprocess.call(["ifconfig", interface, "down"])
    subprocess.call(["ifconfig", interface, "hw", "ether", new_mac])
    subprocess.call(["ifconfig", interface, "up"])

def get_current_mac(interface):
    ifconfig_result = subprocess.check_output(["ifconfig", interface])
    mac_address_search_results = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w", str(ifconfig_result))

    if mac_address_search_results:
       return mac_address_search_results.group(0)
    else:
       print("[-] Could not read MAC address ")

options = get_arguments()
current_mac = get_current_mac(options.interface)
print("Current MAC = " + str(current_mac))

change_mac(options.interface, options.new_mac)
current_mac = get_current_mac(options.interface)
if current_mac ==options.new_mac:
    print("[+] MAC address was changed to " + current_mac)
else:
    print("[-] MAC address did not change")