refactor: 将文件从子目录提升到仓库根目录

所有文件从 hello_js_reverse_skill/ 子目录移至仓库根目录，使项目结构更清晰，便于作为 Skill 直接引用。 Made-with: Cursor
2026-03-18 22:55:27 +08:00
parent cfd0cc919d
commit fb14cf7916
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+/**
+ * VM 沙箱模块
+ * 用于执行服务端返回的混淆 JS 代码，提取动态生成的 Cookie/Token
+ */
+
+const vm = require('vm');
+
+function createSandbox(options = {}) {
+    const cookies = {};
+    const logs = [];
+    
+    const sandbox = {
+        window: null,
+        self: null,
+        globalThis: null,
+        top: null,
+        parent: null,
+        
+        document: {
+            cookie: options.initialCookie || '',
+            createElement: (tag) => ({
+                tagName: tag.toUpperCase(), style: {}, src: '',
+                setAttribute: () => {}, getAttribute: () => null,
+                appendChild: () => {}, innerHTML: '',
+            }),
+            getElementById: () => null,
+            getElementsByTagName: (tag) => tag === 'script' ? [1, 2, 3] : [],
+            getElementsByClassName: () => [],
+            querySelector: () => null,
+            querySelectorAll: () => [],
+            head: { appendChild: () => {} },
+            body: { appendChild: () => {} },
+            location: { href: options.url || 'https://example.com' },
+            referrer: '',
+            readyState: 'complete',
+        },
+        
+        navigator: {
+            userAgent: options.userAgent || 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
+            appCodeName: 'Mozilla', appName: 'Netscape', appVersion: '5.0',
+            platform: 'MacIntel', language: 'zh-CN', languages: ['zh-CN', 'zh', 'en'],
+            cookieEnabled: true, onLine: true, webdriver: false,
+            plugins: { length: 3 }, mimeTypes: { length: 4 },
+            hardwareConcurrency: 8, maxTouchPoints: 0,
+        },
+        
+        location: {
+            href: options.url || 'https://example.com',
+            protocol: 'https:', host: 'example.com',
+            hostname: 'example.com', pathname: '/', search: '', hash: '',
+            origin: 'https://example.com',
+        },
+        
+        screen: { width: 1920, height: 1080, availWidth: 1920, availHeight: 1055, colorDepth: 24, pixelDepth: 24 },
+        
+        setTimeout: (fn, ms) => setTimeout(fn, Math.min(ms || 0, 3000)),
+        setInterval: (fn, ms) => { /* 不执行定时器避免死循环 */ return -1; },
+        clearTimeout, clearInterval,
+        
+        String, Array, Object, Math, Date, RegExp, JSON, Map, Set,
+        parseInt, parseFloat, isNaN, isFinite, NaN, Infinity, undefined,
+        encodeURIComponent, decodeURIComponent, encodeURI, decodeURI,
+        escape, unescape,
+        Error, TypeError, RangeError, SyntaxError, ReferenceError,
+        ArrayBuffer, Uint8Array, Int32Array, Float64Array, DataView,
+        Promise, Proxy, Reflect, Symbol, Number, Boolean,
+        
+        btoa: (str) => Buffer.from(str, 'binary').toString('base64'),
+        atob: (b64) => Buffer.from(b64, 'base64').toString('binary'),
+        
+        console: {
+            log: (...args) => logs.push(args.join(' ')),
+            warn: () => {}, error: () => {}, info: () => {},
+            debug: () => {}, trace: () => {}, clear: () => {},
+        },
+        
+        XMLHttpRequest: class {
+            open() {} setRequestHeader() {} send() {
+                this.readyState = 4; this.status = 200; this.responseText = '{}';
+                if (this.onreadystatechange) this.onreadystatechange();
+            }
+            addEventListener(e, fn) { this['on' + e] = fn; }
+        },
+    };
+    
+    sandbox.window = sandbox;
+    sandbox.self = sandbox;
+    sandbox.globalThis = sandbox;
+    sandbox.top = sandbox;
+    sandbox.parent = sandbox;
+    sandbox.frames = sandbox;
+    
+    // Cookie 拦截
+    Object.defineProperty(sandbox.document, 'cookie', {
+        get() {
+            return Object.entries(cookies).map(([k, v]) => `${k}=${v}`).join('; ');
+        },
+        set(val) {
+            const mainPart = val.split(';')[0];
+            const eqIdx = mainPart.indexOf('=');
+            if (eqIdx > 0) {
+                const name = mainPart.substring(0, eqIdx).trim();
+                const value = mainPart.substring(eqIdx + 1).trim();
+                cookies[name] = value;
+            }
+        },
+        configurable: true,
+    });
+    
+    if (options.initialCookie) {
+        options.initialCookie.split(';').forEach(pair => {
+            const [k, ...rest] = pair.trim().split('=');
+            if (k) cookies[k.trim()] = rest.join('=');
+        });
+    }
+    
+    return { sandbox, cookies, logs };
+}
+
+/**
+ * 执行混淆 JS 代码并提取 Cookie
+ * @param {string} code - 混淆的 JS 代码
+ * @param {Object} options - 配置选项
+ * @returns {Object} { cookies, logs, success }
+ */
+function executeAndExtractCookie(code, options = {}) {
+    const { sandbox, cookies, logs } = createSandbox(options);
+    vm.createContext(sandbox);
+    
+    try {
+        vm.runInContext(code, sandbox, {
+            timeout: options.timeout || 5000,
+            filename: 'dynamic.js',
+        });
+        
+        return {
+            success: true,
+            cookies: { ...cookies },
+            cookieString: Object.entries(cookies).map(([k, v]) => `${k}=${v}`).join('; '),
+            logs,
+        };
+    } catch (error) {
+        return {
+            success: false,
+            error: error.message,
+            cookies: { ...cookies },
+            logs,
+        };
+    }
+}
+
+module.exports = { createSandbox, executeAndExtractCookie };