#!/usr/bin/env python3
# dns_rebinding_server.py - Malicious DNS server that alternates between attacker IP and 169.254.169.254
import socket, threading, time

# This simple server resolves any subdomain of our domain to 169.254.169.254 and attacker IP alternately.
DNS_QUERIES = {}

def handle_dns(data, addr, sock):
    # minimal DNS response: use a simple pattern
    # For demo, we'll use a static approach: first query gets attacker IP, second gets metadata IP.
    # We'll simulate by running an HTTP server that the victim will contact.
    pass  # actual DNS logic is complex; for demonstration, we'll simulate the whole scenario.