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DevTools Anti-Detector

Simple tool to temporarily prevent site from using popular methods of DevTools detection. Do not leave enabled!

当前为 2018-06-06 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         DevTools Anti-Detector
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.3
  5. // @description  Simple tool to temporarily prevent site from using popular methods of DevTools detection. Do not leave enabled!
  6. // @author       lainverse
  7. // @match        *://*/*
  8. // @grant        unsafeWindow
  9. // @run-at       document-start
  10. // ==/UserScript==
  11.  
  12. (function() {
  13.     'use strict';
  14.  
  15.     let knownRoots = new WeakSet();
  16.     function wrapRegExp(root) {
  17.         if (knownRoots.has(root))
  18.             return;
  19.         let _proto = void 0;
  20.         try {
  21.             _proto = root.RegExp.prototype;
  22.         } catch(ignore) {
  23.             return;
  24.         }
  25.         // Prevent RegExpt + toString trick (technically possible with any other object, but I encountered only this one
  26.         let _RE_tS = Object.getOwnPropertyDescriptor(_proto, 'toString');
  27.         let _RE_tSV = _RE_tS.value || _RE_tS.get();
  28.         let fts = Function.prototype.toString;
  29.         Object.defineProperty(_proto, 'toString', {
  30.             enumerable: _RE_tS.enumerable,
  31.             configurable: _RE_tS.configurable,
  32.             get: () => _RE_tSV,
  33.             set: function(val) {
  34.                 console.warn('Attempt to change toString for', this, 'with', fts.call(val));
  35.                 //throw 'stop it!';
  36.                 return true;
  37.             }
  38.         });
  39.     }
  40.  
  41.     wrapRegExp(unsafeWindow);
  42.  
  43.     let _contentWindow = Object.getOwnPropertyDescriptor(HTMLIFrameElement.prototype, 'contentWindow');
  44.     let _get_contentWindow = _contentWindow.get;
  45.     _contentWindow.get = function() {
  46.         let _cw = _get_contentWindow.apply(this, arguments);
  47.         if (_cw)
  48.             wrapRegExp(_cw);
  49.         return _cw;
  50.     };
  51.     Object.defineProperty(HTMLIFrameElement.prototype, 'contentWindow', _contentWindow);
  52. })();