Python Ethical Hacking - NETWORK_SCANNER(1)

NETWORK_SCANNER

• Discover all devices on the network.
• Display their IP address.
• Display their MAC address.

 

Write the Python code using the scapy.all module.

Refer to: https://scapy.readthedocs.io/en/latest/installation.html

#!/usr/bin/env python

import scapy.all as scapy

def scan(ip):
    scapy.arping(ip)

scan("10.0.0.1/24")

 

ALGORITHM

Goal -> Discover clients on the network.

Steps:

1. Create arp request directed to broadcast MAC asking for IP.

Two main parts:

-> Use ARP to ask who has target IP.

-> Set destination MAC to broadcast MAC.

2. Send packet and receive a response.

3. Parse the response.

4. Print result.

 

Use the scapy module in this program.

https://scapy.readthedocs.io/en/latest/usage.html

 

EX: Python Script to discover the clients on the network.

#!/usr/bin/env python

import scapy.all as scapy

def scan(ip):
    arp_request = scapy.ARP(pdst=ip)
    broadcast = scapy.Ether(dst="ff:ff:ff:ff:ff:ff")
    arp_request_broadcast = broadcast/arp_request
    answered_list = scapy.srp(arp_request_broadcast, timeout=1, verbose=False)[0]

    print("IP\t\t\tMAC Address\n------------------------------------------")
    for element in answered_list:
        print(element[1].psrc + "\t\t" + element[1].hwsrc)

scan("10.0.0.1/24")

 

Execute the script and show the result.