macchanger.py

import subprocess
import optparse
import re

def get_arguments():
    parser = optparse.OptionParser()
    parser.add_option("-i", "--interface", dest="network_interface", help="Network interface for changing the MAC address")
    parser.add_option("-m", "--mac", dest="new_mac", help="The new MAC address")
    (options, _) = parser.parse_args()

    if not options.network_interface:
        parser.error("[-] No interface provided. Example: python3 macchanger -i wlan0 (--help for more)")
    if not options.new_mac:
        parser.error("[-] No MAC address provided. Example: python3 macchanger -m 00:11:22:33:44:55 (--help for more)")

    return options

def mac_changer(network_interface, new_mac):
    subprocess.call(["sudo", "ifconfig", network_interface, "down"])
    subprocess.call(["sudo", "ifconfig", network_interface, "hw", "ether", new_mac])
    subprocess.call(["sudo", "ifconfig", network_interface, "up"])

def get_mac(interface):
    ifconfig_result = subprocess.check_output(["ifconfig", interface]).decode("utf-8")
    mac_address_search_result = re.search(r"(\w\w:\w\w:\w\w:\w\w:\w\w:\w\w)", ifconfig_result)
    if mac_address_search_result:
        return mac_address_search_result.group(0)
    else:
        return None

options = get_arguments()
mac_changer(options.network_interface, options.new_mac)
mac_address = get_mac(options.network_interface)

if mac_address == options.new_mac:
    print("[+] MAC address changed for " + options.network_interface + " to " + options.new_mac)
else:
    print("[-] Error! MAC address was not changed or could not be found.")

# def reset():
#     subprocess.call("sudo ifconfig wlan0 up")
#     subprocess.call("sudo ifconfig wlan0 hw ether $(ethtool -P wlan0 | awk '{print $3}')")
#     subprocess.call("sudo ifconfig wlan0 down")