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mac_changer.py
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mac_changer.py
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#!/usr/bin/env python3
### MAC address changer
### requires sudo / root to work properly
import subprocess
import optparse #user input parser
import re
# Argument parser function
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, use --help for more info")
elif not options.new_mac:
parser.error("[-] Please specify a new MAC address, use --help for more info")
return options
# Change MAC address with ifconfig function
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])
#ifconfig_result = ifconfig_result.decode("utf-8") # re.search() will not work with bytes object, decoding to utf-8
mac_address_search_result = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w", str(ifconfig_result))
if mac_address_search_result:
return mac_address_search_result.group(0)
else:
print("[-] Could not read MAC address")
options = get_arguments() #get users arguements
current_mac = get_current_mac(options.interface) #get current mac address of interface
print("Current MAC = " + str(current_mac)) #printing current mac address
change_mac(options.interface, options.new_mac) #changing mac address
current_mac = get_current_mac(options.interface) #get current mac again after change
if current_mac == options.new_mac.lower():
print("[+] MAC address was succesfully changed to "+ current_mac)
else:
print("[-] MAC address did not get changed.")