macchanger.py

#!/usr/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 its 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 an interface, --help for more info.")
    elif not options.new_mac:
        parser.error("[-] Please specify the new MAC Address, --help for more info.")
    return options

def change_mac(interface, new_mac):
    print( "[+] Changing the MAC Address for", interface, "to", new_mac)
    subprocess.call(["ifconfig", interface, "down"])
    subprocess.call(["ifconfig", interface, "ether", new_mac])
    #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_result = re.search(r"(\w{2}:)+\w\w", ifconfig_result)
    print(mac_address_search_result)
    if mac_address_search_result:
        return mac_address_search_result.group(0)
    else:
        print ("[-] Could not read MAC Address")

options = get_arguments()
exit
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 changed to: ", current_mac)
else:
    print("[-] MAC Address did not get changed")