DevTools Bypass

Anti Anti-debugger

Stops most anti-debugging implementations by JavaScript obfuscators and stops the console logs from being automatically cleared. Fixed issue with missing console tab.
目前為 2024-10-07 提交的版本，檢視最新版本。
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// ==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      1.2
// @description  Stops most anti-debugging implementations by JavaScript obfuscators and stops the console logs from being automatically cleared. Fixed issue with missing console tab.
// @description:vi Ngăn chặn hầu hết các triển khai anti-debugging bằng JavaScript obfuscators và ngăn chặn việc xóa nhật ký console tự động. Đã sửa lỗi mất tab console.
// @description:zh-CN  阻止大多数 JavaScript 混淆器实现的反调试，并阻止控制台日志被自动清除。修复了控制台标签丢失的问题。
// @author       Yuusei
// @match        *://*/*
// @grant        unsafeWindow
// @run-at       document-start
// @license      GPL-3.0-only
// ==/UserScript==

(function() {
    'use strict';

    const config = {
        debugKeywords: ['debugger', 'debug', 'debugging', 'breakpoint'],
        consoleProps: ['log', 'warn', 'error', 'info', 'debug', 'assert', 'dir', 'dirxml', 'trace', 'group', 'groupCollapsed', 'groupEnd', 'time', 'timeEnd', 'profile', 'profileEnd', 'count'],
    };

    const originalConsole = { ...console };
    let isScriptActive = false;

    const safeEval = (code, context = {}) => {
        const safeContext = { ...context, console: { log: () => {} } };
        const safeCode = `
            'use strict';
            const alert = () => {};
            const confirm = () => {};
            const prompt = () => {};
            ${Object.keys(safeContext).map(key => `const ${key} = this.${key};`).join('\n')}
            return (${code});
        `;
        try {
            return new Function(safeCode).call(safeContext);
        } catch (error) {
            originalConsole.warn('Failed to evaluate code:', error);
            return null;
        }
    };

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

        let funcStr = func.toString();
        if (config.debugKeywords.some(keyword => funcStr.includes(keyword))) {
            funcStr = funcStr.replace(new RegExp(`\\b(${config.debugKeywords.join('|')})\\b`, 'g'), '/* removed */');
            return safeEval(funcStr) || func;
        }
        return func;
    };

    const wrapConsole = () => {
        const consoleProxy = new Proxy(originalConsole, {
            get: (target, prop) => {
                if (config.consoleProps.includes(prop) && typeof target[prop] === 'function') {
                    return new Proxy(target[prop], {
                        apply: (targetFunc, thisArg, args) => {
                            args = args.map(modifyFunction);
                            return Reflect.apply(targetFunc, thisArg, args);
                        }
                    });
                }
                return Reflect.get(target, prop);
            }
        });

        Object.defineProperty(unsafeWindow, 'console', {
            value: consoleProxy,
            writable: false,
            configurable: false
        });
    };

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

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

    const preventDebugging = () => {
        const noop = () => {};
        const protectedProps = ['pause', 'alert', 'confirm', 'prompt'];
        
        protectedProps.forEach(prop => {
            Object.defineProperty(unsafeWindow, prop, {
                get: () => noop,
                set: () => {},
                configurable: false
            });
        });

        const originalDate = unsafeWindow.Date;
        unsafeWindow.Date = new Proxy(originalDate, {
            construct: (target, args) => {
                const date = new target(...args);
                date.getTime = new Proxy(date.getTime, {
                    apply: (target, thisArg, args) => {
                        if (new Error().stack.includes('debugger')) {
                            return 0; // Return a fake timestamp
                        }
                        return Reflect.apply(target, thisArg, args);
                    }
                });
                return date;
            }
        });
    };

    const init = () => {
        wrapConsole();
        antiAntiDebugger();
        preventDebugging();
        isScriptActive = true;
        originalConsole.log('%cAnti Anti-debugger is active', 'color: #00ff00; font-weight: bold; font-size: 20px;');
    };

    init();

    // Periodically check and reapply if necessary
    setInterval(() => {
        if (!isScriptActive) {
            init();
        }
    }, 1000);

    })();