changemac.py

# Python Script to change MAC Address

# Import Useful modules
import sys
import subprocess
import argparse
import random
import time
import re


# Function to get the interface name
def get_arguments():
	# This will give user a neat CLI
	parser = argparse.ArgumentParser()
	# We need the interface name
	parser.add_argument("-i", "--interface",
				dest="interface",
				help="Name of the interface. "
				"Type ifconfig for more details.")
	options = parser.parse_args()
	# Check if interface was given
	if options.interface:
		return options.interface
	else:
		parser.error("[!] Invalid Syntax. "
					"Use --help for more details.")


# Function to change the MAC Address
def change_mac(interface, new_mac_address):
	# As explained above, these lines will
	# execute these commands for us
	subprocess.call(["sudo", "ifconfig", interface,
					"down"])
	subprocess.call(["sudo", "ifconfig", interface,
					"hw", "ether", new_mac_address])
	subprocess.call(["sudo", "ifconfig", interface,
					"up"])

# Function to generate a random MAC Address
def get_random_mac_address():
	characters = "0123456789abcdef"
	random_mac_address = "00"
	for i in range(5):
		random_mac_address += ":" + \
						random.choice(characters) \
						+ random.choice(characters)
	return random_mac_address

# Function to get the current MAC Address
# We will use it restore MAC address
# in case something goes wrong.
def get_current_mac(interface):
	output = subprocess.check_output(["ifconfig",
									interface])
	return re.search("\w\w:\w\w:\w\w:\w\w:\w\w:\w\w",
				str(output)).group(0)

# Driver Program
if __name__ == "__main__":
	print("[* Welcome to MAC ADDRESS Changer *]")
	print("[*] Press CTRL-C to QUIT")
	# Change it to required value(in sec)
	TIME_TO_WAIT = 60
	interface = get_arguments()
	current_mac = get_current_mac(interface)
	try:
		while True:
			random_mac = get_random_mac_address()
			change_mac(interface, random_mac)
			new_mac_summary = subprocess.check_output(
				["ifconfig", interface])
			if random_mac in str(new_mac_summary):
				print("\r[*] MAC Address Changed to",
					random_mac,
					end=" ")
				sys.stdout.flush()
			# Wait for a constant period of time
			time.sleep(TIME_TO_WAIT)

	except KeyboardInterrupt:
		# Restore the MAC before quitting.
		change_mac(interface, current_mac)
		print("\n[+] Quitting Program...")