#!/usr/bin/env python3

# @Author - Avish Dhirawat

# Date - 9 July 2020

import scapy.all as scapy

#import optparse # optparse is depreciated because its outdated and developers stopped providing its updates

import argparse # its new and we get its updates

def get_arguments():

#parser = optparse.OptionParser()

parser = argparse.ArgumentParser()

#parser.add_option('-t', '--target', dest = "ip_range", help = "Range of target IP to look for ")

parser.add_argument('-t', '--target', dest = "ip_range", help = "Range of target IP to look for ")

#(options, arguments) = parser.parse_args()

options = parser.parse_args()

if not options.ip_range:

parser.error("[-] Please specify the IP range to look for, use --help for more info")

else:

return options

def scan(ip_range):

# Short way to do ARP

#scapy.arping(ip)

# Long way to do it

arp_request = scapy.ARP(pdst = ip_range)

#print(arp_request.summary())

#arp_request.show()

#scapy.ls(scapy.ARP())

broadcast = scapy.Ether(dst = "ff:ff:ff:ff:ff:ff") # Enter the MAC where we want to deliver the packet, ff:ff:ff:ff:ff:ff for braocast

#print(broadcast.summary())

#broadcast.show()

#scapy.ls(scapy.Ether())

arp_request_broadcast = broadcast/arp_request

#print(arp_request_broadcast.summary())

#arp_request_broadcast.show()

#answered_list, unanswered_list = scapy.srp(arp_request_broadcast, timeout = 1) # Sending and Capturing packets

answered_list = scapy.srp(arp_request_broadcast, timeout = 1, verbose = False)[0]

#print(answered_list.summary())

#print(unanswered_list.summary())

#print("________________________________________________________")

#print("IP\t\t\tMAC Address\n--------------------------------------------------------")

clients_list = []

for element in answered_list:

client_dict = {"ip" : element[1].psrc, "MAC" : element[1].hwsrc}

#print(element[1].show())

clients_list.append(client_dict)

#print(element[1].psrc + "\t\t" + element[1].hwsrc)

#print(element[1].hwsrc)

#print('----------------------------------------------------------')

return clients_list

#print(clients_list)

def print_result(result_list):

print("________________________________________________")

print("IP\t\t\tMAC Address\n------------------------------------------------")

for client in result_list:

#print(client)

print(client['ip']+ "\t\t"+ client['MAC'])

#scan_result = scan("10.0.2.1/24")

options = get_arguments()

scan_result = scan(options.ip_range)

print_result(scan_result)