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DNS rebinding detection

DNS rebinding detection for 479

  1. // ==UserScript==
  2. // @name         DNS rebinding detection
  3. // @namespace    http://anend.net
  4. // @version      0.2
  5. // @description  DNS rebinding detection for 479
  6. // @author       Anend Yan
  7. // @match        *
  8. // @grant        none
  9. // @require http://code.jquery.com/jquery-3.4.1.min.js
  10. /* globals $ */
  11. // ==/UserScript==
  12.  
  13. (function() {
  14.     'use strict';
  15.     var url = window.top.document.URL;
  16.     var DNS="http://172.20.0.2:18180/host/"
  17.     $.get(DNS+url.slice(url.indexOf("://")+3, url.indexOf(".")), function(data){
  18.         if(data.ttl<=60){
  19.         alert("ttl: " + data.ttl+ "DNS rebinding detected");}
  20.     });
  21.  
  22.     //alert(userIP);
  23.     // Your code here...
  24. })();