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mac_changer.py

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+#/!usr/bin/env python3
+import subprocess
+import optparse
+import re
+import random
+
+options = None
+
+def gen_rand_addr():
+  output = hex(random.randrange(0, 0x10))[2] + "26ae"[random.randrange(0,4)]
+  for i in range(5):
+    output += ":" + (hex(random.randrange(0, 0x100)) + "00")[2:4]
+  return output
+
+def get_orig_addr(interface):
+  ethtool_result = subprocess.check_output(["ethtool", "-P", interface])
+  mac_result = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w", str(ethtool_result))
+  if mac_result:
+    return mac_result.group(0)
+  else:
+    print("[-] Could not read original MAC result.")
+
+def parse_args():
+  parser = optparse.OptionParser(
+    """
+    This software is provided \"AS IS\", without warranty of any kind.\n
+    'mac_changer' is a tool used to change your (Media Access Control) address.
+    This can be helpful for staying anonymous, impersonating other
+    devices, or bypassing filters.
+
+    run with: 'python3 mac_changer.py [options]'
+    Required flags: --interface and address specification (-a, -r, or -p)\n\n
+    Tool created by: Elgin Ciani
+    """,
+    version="%prog 2.5")
+
+  #Available command line arguments
+  parser.add_option("-i", "--interface", dest="interface", help="Interface to change MAC address. e.g: eth0, wlan0")
+  parser.add_option("-a", "--address", dest="address", help="New MAC address in the form 11:22:33:44:55:66")
+  parser.add_option("-r", "--random", action="store_true", default=False, help="Generates a random new hexadecimal MAC address.")
+  parser.add_option("-R", "--restore-permanent-address", action="store_true", default=False, dest="restore", help="Restores original MAC address for given interface.")
+  parser.add_option("-P", "--print-permanent-address", action="store_true", default=False, dest="printorig", help="Prints original MAC address for given interface.")
+  parser.add_option("-p", "--print-current-address", action="store_true", default=False, dest="printcurr", help="Prints current MAC address for given interface.")
+  parser.add_option("-v", "--verbose", action="store_true", default=False, dest="verbose", help="Print ifconfig info for given interface before and after changing address.")
+  parser.add_option("-q", "--quiet", action="store_true", default=False, dest="quiet", help="Enable this flag to turn off any print logging.")
+
+  global options
+  (options, arguments) = parser.parse_args()
+
+  #Throw error if user does not specify required parameters
+  if not options.interface:
+    parser.error("[-] Please specify an interface. See --help for more info.")
+  elif not options.address and not options.random and not options.restore and not options.printorig and not options.printcurr:
+    parser.error("[-] Specify a new mac address (or use --random or -p). See --help for more info.")
+  elif options.address and (options.random or options.restore):
+    parser.error("[-] Do not specify address and set -r or -p flags simultaneously.")
+  elif options.restore and options.random:
+    parser.error("[-] Do not set -r and -p flags simultaneously.")
+  ## End: Error scenarios ##
+  elif options.printcurr:
+    currmac = get_curr_mac(options.interface)
+    print("Current MAC address:", currmac)
+    exit()
+  elif options.printorig:
+    origmac = get_orig_addr(options.interface)
+    print("Permanent MAC address:", origmac)
+    exit()
+  elif not options.address and not options.restore and options.random: #Random MAC in place of specified address
+    options.address = gen_rand_addr()
+  elif not options.address and not options.random and options.restore: #Restore original MAC address
+    options.address = get_orig_addr(options.interface)
+  return options
+
+def change_mac(interface, newmac):
+  if not options.quiet:
+    print("[+] Changing MAC address for", interface, "to", newmac)
+  subprocess.call(["ifconfig", interface, "down"])
+  subprocess.call(["ifconfig", interface, "hw", "ether", newmac])
+  subprocess.call(["ifconfig", interface, "up"])
+
+def print_info(interface):
+  subprocess.call(["ifconfig", options.interface])
+
+def get_curr_mac(interface):
+  ifconfig_result = subprocess.check_output(["ifconfig", options.interface])
+  mac_result = re.search(r"\w\w:\w\w:\w\w:\w\w:\w\w:\w\w", str(ifconfig_result))
+  if mac_result:
+    return mac_result.group(0)
+  else:
+    print("[-] Could not read MAC result.")
+
+
+########## MAIN ##########
+options = parse_args() #Option parser
+
+currmac = get_curr_mac(options.interface)
+
+if not options.quiet and not options.verbose:
+  print("Current MAC = " + str(currmac))
+
+if options.verbose:
+  print("*"*20, "Before Update Info", "*"*20)
+  print()
+  print_info(options.interface)
+
+change_mac(options.interface, options.address) #Change mac address
+currmac = get_curr_mac(options.interface) #Update current mac address
+
+if options.verbose:
+  print("*"*20, "After Update Info", "*"*20)
+  print()
+  print_info(options.interface)
+
+if not options.quiet:
+  if currmac == options.address:
+    print("[+] MAC address changed successfully.")
+  else:
+    print("[-] MAC address change failed.")
+########## END MAIN ##########