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反反调试

高级反反调试保护，具有改进的性能和功能。 尝试修复视频播放问题。

当前为 2024-10-08 提交的版本，查看 最新版本。

// ==UserScript==
// @name         Anti Anti-debugger 
// @name:vi      Chống Anti-debugger 
// @name:zh-CN   反反调试
// @namespace    https://greasyfork.org/vi/users/1195312-renji-yuusei
// @version      1.4
// @description  Advanced protection against anti-debugging with improved performance and features. Attempts to fix video playback issues.
// @description:vi Bảo vệ nâng cao chống anti-debugging với hiệu suất và tính năng được cải thiện. Cố gắng sửa lỗi phát lại video.
// @description:zh-CN 高级反反调试保护，具有改进的性能和功能。 尝试修复视频播放问题。
// @author       Yuusei
// @match        *://*/*
// @grant        unsafeWindow
// @run-at       document-start
// @license      GPL-3.0-only
// ==/UserScript==

(function() {
    'use strict';

    const config = {
        debugKeywords: new Set(['debugger', 'debug', 'debugging', 'breakpoint']),
        consoleProps: ['log', 'warn', 'error', 'info', 'debug', 'assert', 'dir', 'dirxml', 'trace', 'group', 'groupCollapsed', 'groupEnd', 'time', 'timeEnd', 'profile', 'profileEnd', 'count'],
        maxLogHistory: 100,
        // Add a whitelist for sites where debugging should be allowed
        whitelist: new Set([]), // Example: ['example.com', 'another-site.net']
    };

    const originalConsole = Object.fromEntries(
        Object.entries(console).map(([key, value]) => [key, value.bind(console)])
    );

    let logHistory = [];

    const safeEval = (code, context = {}) => {
        try {
            return new Function('context', `with(context) { return (${code}) }`)(context);
        } catch (error) {
            originalConsole.error('Failed to evaluate code:', error, code);
            return null;
        }
    };

    const modifyFunction = (func) => {
        if (typeof func !== 'function') return func;

        const funcStr = func.toString();
        if ([...config.debugKeywords].some(keyword => funcStr.includes(keyword))) {
            const modifiedStr = funcStr.replace(
                new RegExp(`\\b(${[...config.debugKeywords].join('|')})\\b`, 'g'),
                '/* removed */'
            );
            try {
                return safeEval(`(${modifiedStr})`);
            } catch (e) {
                originalConsole.error("Error modifying function:", e);
                return func; // Return original function if modification fails
            }
        }
        return func;
    };



    const wrapConsole = () => {
        config.consoleProps.forEach(prop => {
            console[prop] = (...args) => {
                originalConsole[prop](...args);
                const formattedArgs = args.map(formatLogArgument);
                const logMessage = `[${prop.toUpperCase()}] ${formattedArgs.join(' ')}`;
                logHistory.push(logMessage);
                if (logHistory.length > config.maxLogHistory) logHistory.shift();
            };
        });
    };


    const antiAntiDebugger = () => {
        const proxyHandler = {
            apply: (target, thisArg, args) => Reflect.apply(target, thisArg, args.map(modifyFunction)),
            construct: (target, args) => Reflect.construct(target, args.map(modifyFunction))
        };

        Object.defineProperties(Function.prototype, {
            constructor: {
                value: new Proxy(Function.prototype.constructor, proxyHandler),
                writable: false,
                configurable: false,
            }
        });

        unsafeWindow.eval = new Proxy(unsafeWindow.eval, proxyHandler);
        unsafeWindow.Function = new Proxy(unsafeWindow.Function, proxyHandler);
    };


    const preventDebugging = () => {
          // Check if the current site is in the whitelist
        if (config.whitelist.some(site => window.location.host.includes(site))) {
            return; // Skip disabling debugging functions
        }

        const noop = () => {};
        ['alert', 'confirm', 'prompt'].forEach(prop => {
            if (prop in unsafeWindow) {
                try { // Try/catch for robustness
                     Object.defineProperty(unsafeWindow, prop, {
                        value: noop,
                        writable: false,
                        configurable: false
                    });
                } catch (e) {
                    originalConsole.error("Error overriding ", prop, ":", e);
                }
            }
        });
       
        // Attempt to restore video playback by re-enabling potentially blocked APIs
        try {
            Object.defineProperty(HTMLMediaElement.prototype, 'play', {
                value: HTMLMediaElement.prototype.play,
                writable: true,
                configurable: true
            });
        } catch (error) {
            originalConsole.error("Error restoring HTMLMediaElement.play:", error);
        }
    };

    const formatLogArgument = (arg) => {
        if (arg === null) return 'null';
        if (arg === undefined) return 'undefined';
        if (typeof arg === 'object') {
            try {
                return JSON.stringify(arg, (key, value) => 
                    typeof value === 'function' ? value.toString() : value, 2);
            } catch (e) {
                return '[Circular]';
            }
        }
        return String(arg);
    };

    const init = () => {
        wrapConsole();

         // Check for whitelist before applying anti-debugging
        if (!config.whitelist.some(site => window.location.host.includes(site))) {
            antiAntiDebugger();
        }
        preventDebugging();
        console.log('%cAnti Anti-debugger is active', 'color: #00ff00; font-weight: bold;');
    };

    init();
})();