终局
This commit is contained in:
dela
469
asset/deobfuscate.js
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469
asset/deobfuscate.js
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@@ -0,0 +1,469 @@
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/**
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* hsw.js AST 解混淆脚本 v4
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*
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* 双解码器支持:
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* - PW/QQ: base=311, 596条, rotation=275
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* - Qg: base=438, 133条, 无旋转
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*
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* AST 遍历 passes:
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* 1. 别名收集 (两个解码器各自的别名链)
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* 2. 常量传播 + 解码替换
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* 3. 属性访问简化: obj["prop"] → obj.prop
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* 4. 字符串拼接折叠: "a".concat("b") → "ab"
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* 5. 死代码清理
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*/
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const fs = require("fs");
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const path = require("path");
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const parser = require("@babel/parser");
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const traverse = require("@babel/traverse").default;
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const generate = require("@babel/generator").default;
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const t = require("@babel/types");
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const SRC = path.join(__dirname, "hsw.js");
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const OUT = path.join(__dirname, "hsw.deobfuscated.js");
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const src = fs.readFileSync(SRC, "utf-8");
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// ═══════════════════════════════════════════
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// Phase 1: 提取两个字符串数组 + 解码
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// ═══════════════════════════════════════════
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console.log("[*] Phase 1: 提取字符串数组...");
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function decode(encoded) {
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const chars =
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"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/=";
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let raw = "";
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let bc = 0;
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let bs = 0;
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let ch;
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let idx = 0;
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while ((ch = encoded.charAt(idx++))) {
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ch = chars.indexOf(ch);
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if (~ch) {
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bs = bc % 4 ? 64 * bs + ch : ch;
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if (bc++ % 4)
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raw += String.fromCharCode(255 & (bs >> ((-2 * bc) & 6)));
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}
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}
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let uri = "";
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for (let i = 0; i < raw.length; i++)
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uri += "%" + ("00" + raw.charCodeAt(i).toString(16)).slice(-2);
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return decodeURIComponent(uri);
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}
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// ── 解码器 1: tH / QQ / PW (base=311, 有旋转) ──
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const arr1Match = src.match(
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/tH\s*=\s*function\s*\(\)\s*\{\s*var\s+Ig\s*=\s*\[([\s\S]*?)\];\s*return\s*\(\s*tH/
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);
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if (!arr1Match) { console.error("[-] 无法提取 tH 数组"); process.exit(1); }
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const raw1 = eval(`[${arr1Match[1]}]`);
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const decoded1 = raw1.map((s) => { try { return decode(s); } catch { return null; } });
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console.log(`[+] 解码器1 (PW/QQ): ${raw1.length} 条, base=311`);
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// 暴力搜索旋转
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const BASE1 = 311;
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const LEN1 = decoded1.length;
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const lookup1 = (rot, idx) => decoded1[((((idx - BASE1 + rot) % LEN1) + LEN1) % LEN1)];
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const constraints1 = [
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[814, "length"], [507, "concat"], [606, "createElement"],
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[675, "canvas"], [440, "prototype"], [719, "toString"],
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[874, "call"], [532, "create"], [716, "test"],
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[897, "width"], [811, "height"], [873, "toDataURL"],
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];
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let rot1 = -1;
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for (let r = 0; r < LEN1; r++) {
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if (constraints1.every(([i, e]) => lookup1(r, i) === e)) { rot1 = r; break; }
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}
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if (rot1 === -1) { console.error("[-] PW/QQ 旋转搜索失败"); process.exit(1); }
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console.log(`[+] PW/QQ 旋转偏移: ${rot1}`);
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const map1 = new Map();
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for (let i = BASE1; i < BASE1 + LEN1; i++) {
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const v = lookup1(rot1, i);
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if (v != null) map1.set(i, v);
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}
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// ── 解码器 2: xf / Qg (base=438, 无旋转) ──
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const arr2Match = src.match(
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/xf\s*=\s*function\s*\(\)\s*\{\s*var\s+Ig\s*=\s*\[([\s\S]*?)\];\s*return\s*\(\s*xf/
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);
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if (!arr2Match) { console.error("[-] 无法提取 xf 数组"); process.exit(1); }
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const raw2 = eval(`[${arr2Match[1]}]`);
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const decoded2 = raw2.map((s) => { try { return decode(s); } catch { return null; } });
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console.log(`[+] 解码器2 (Qg): ${raw2.length} 条, base=438`);
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const BASE2 = 438;
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const map2 = new Map();
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for (let i = 0; i < decoded2.length; i++) {
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if (decoded2[i] != null) map2.set(i + BASE2, decoded2[i]);
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}
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// 验证 Qg 的一些已知值
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const constraints2 = [
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[441, "length"], // Qg(441) 在 wasm 段出现大量
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[439, "buffer"], // Qg(439)
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[453, "name"], // Qg(453)
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[456, "isArray"], // Array[Qg(456)]
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[457, "exec"], // regex.exec
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[447, "string"], // typeof === Qg(447)
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[449, "constructor"],// Ig[Qg(449)]
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[462, "message"], // Ig[Qg(462)]
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[463, "stack"], // Ig[Qg(463)]
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[476, "set"], // cP().set()
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[467, "subarray"], // Ig[Qg(467)]
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];
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let c2pass = 0;
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for (const [idx, exp] of constraints2) {
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const act = map2.get(idx);
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if (act === exp) c2pass++;
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else console.log(` [!] Qg(${idx}): 期望 "${exp}", 实际 "${act}"`);
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}
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if (c2pass < constraints2.length) {
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// 需要旋转
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console.log(`[!] Qg 直接映射验证 ${c2pass}/${constraints2.length}, 尝试旋转搜索...`);
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const LEN2 = decoded2.length;
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let rot2 = -1;
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for (let r = 0; r < LEN2; r++) {
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const lk = (idx) => decoded2[((((idx - BASE2 + r) % LEN2) + LEN2) % LEN2)];
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if (constraints2.every(([i, e]) => lk(i) === e)) { rot2 = r; break; }
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}
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if (rot2 !== -1 && rot2 !== 0) {
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console.log(`[+] Qg 旋转偏移: ${rot2}`);
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map2.clear();
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for (let i = BASE2; i < BASE2 + LEN2; i++) {
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const v = decoded2[((((i - BASE2 + rot2) % LEN2) + LEN2) % LEN2)];
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if (v != null) map2.set(i, v);
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}
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}
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}
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console.log(`[+] 映射表: PW/QQ=${map1.size}条, Qg=${map2.size}条, 合计=${map1.size + map2.size}条`);
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// ── 合并映射: 根据解码器名来分派 ──
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// decoderGroup1: PW, QQ, 以及它们的别名 → 查 map1
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// decoderGroup2: Qg, 以及它的别名 → 查 map2
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const group1Names = new Set(["PW", "QQ"]);
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const group2Names = new Set(["Qg"]);
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function getMapForDecoder(name) {
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if (group1Names.has(name)) return map1;
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if (group2Names.has(name)) return map2;
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return null;
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}
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// ═══════════════════════════════════════════
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// Phase 2: 解析 AST
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// ═══════════════════════════════════════════
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console.log("[*] Phase 2: 解析 AST...");
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const ast = parser.parse(src, {
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sourceType: "script",
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plugins: [],
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errorRecovery: true,
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});
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console.log("[+] AST 解析完成");
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// ═══════════════════════════════════════════
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// Phase 3: Pass 1 — 别名收集 (两个解码器)
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// ═══════════════════════════════════════════
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console.log("[*] Phase 3: 收集解码器别名...");
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// 追踪: var X = PW → X 属于 group1
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// var Y = Qg → Y 属于 group2
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// var Z = X → Z 属于 X 的 group
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const allDecoders = new Set([...group1Names, ...group2Names]);
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traverse(ast, {
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VariableDeclarator(path) {
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if (
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t.isIdentifier(path.node.id) &&
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t.isIdentifier(path.node.init) &&
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allDecoders.has(path.node.init.name)
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) {
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const src = path.node.init.name;
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const dst = path.node.id.name;
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if (group1Names.has(src)) group1Names.add(dst);
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else if (group2Names.has(src)) group2Names.add(dst);
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allDecoders.add(dst);
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}
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},
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AssignmentExpression(path) {
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if (
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t.isIdentifier(path.node.left) &&
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t.isIdentifier(path.node.right) &&
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allDecoders.has(path.node.right.name)
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) {
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const src = path.node.right.name;
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const dst = path.node.left.name;
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if (group1Names.has(src)) group1Names.add(dst);
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else if (group2Names.has(src)) group2Names.add(dst);
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allDecoders.add(dst);
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}
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},
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});
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// 多轮别名链传播
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let prevSize;
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do {
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prevSize = allDecoders.size;
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traverse(ast, {
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noScope: true,
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VariableDeclarator(path) {
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if (
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t.isIdentifier(path.node.id) &&
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t.isIdentifier(path.node.init) &&
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allDecoders.has(path.node.init.name) &&
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!allDecoders.has(path.node.id.name)
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) {
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const s = path.node.init.name;
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const d = path.node.id.name;
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if (group1Names.has(s)) group1Names.add(d);
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else if (group2Names.has(s)) group2Names.add(d);
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allDecoders.add(d);
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}
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},
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AssignmentExpression(path) {
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if (
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t.isIdentifier(path.node.left) &&
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t.isIdentifier(path.node.right) &&
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allDecoders.has(path.node.right.name) &&
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!allDecoders.has(path.node.left.name)
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) {
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const s = path.node.right.name;
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const d = path.node.left.name;
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if (group1Names.has(s)) group1Names.add(d);
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else if (group2Names.has(s)) group2Names.add(d);
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allDecoders.add(d);
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}
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},
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});
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} while (allDecoders.size > prevSize);
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console.log(`[+] 解码器1别名 (${group1Names.size}): ${[...group1Names].join(", ")}`);
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console.log(`[+] 解码器2别名 (${group2Names.size}): ${[...group2Names].join(", ")}`);
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// ═══════════════════════════════════════════
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// Phase 4: Pass 2 — 常量传播 + 解码替换
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// ═══════════════════════════════════════════
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console.log("[*] Phase 4: 常量传播 + 字符串解码...");
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let resolvedCount = 0;
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let constPropCount = 0;
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function resolveNumericValue(node, scopePath) {
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if (t.isNumericLiteral(node)) return node.value;
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if (t.isUnaryExpression(node) && node.operator === "-" && t.isNumericLiteral(node.argument)) {
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return -node.argument.value;
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}
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if (t.isIdentifier(node)) {
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const binding = scopePath.scope.getBinding(node.name);
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if (binding && binding.constant && binding.path.isVariableDeclarator()) {
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const init = binding.path.node.init;
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if (t.isNumericLiteral(init)) return init.value;
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}
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// 非 constant binding 但 init 是数字且只赋值一次
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if (binding && binding.path.isVariableDeclarator()) {
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const init = binding.path.node.init;
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if (t.isNumericLiteral(init) && !binding.constantViolations.length) {
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return init.value;
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}
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}
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}
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return null;
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}
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traverse(ast, {
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CallExpression(path) {
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const callee = path.node.callee;
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if (
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t.isIdentifier(callee) &&
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allDecoders.has(callee.name) &&
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path.node.arguments.length >= 1
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) {
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const arg = path.node.arguments[0];
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const numVal = resolveNumericValue(arg, path);
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if (numVal === null) return;
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const map = getMapForDecoder(callee.name);
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if (!map) return;
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if (map.has(numVal)) {
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path.replaceWith(t.stringLiteral(map.get(numVal)));
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resolvedCount++;
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if (!t.isNumericLiteral(arg)) constPropCount++;
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}
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}
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},
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});
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console.log(`[+] 解码替换: ${resolvedCount} (常量传播: ${constPropCount})`);
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// ═══════════════════════════════════════════
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// Phase 5: Pass 3 — 属性简化
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// ═══════════════════════════════════════════
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console.log("[*] Phase 5: 属性访问简化...");
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let memberCount = 0;
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const RESERVED = new Set([
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"break","case","catch","continue","debugger","default","delete","do",
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"else","finally","for","function","if","in","instanceof","new","return",
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"switch","this","throw","try","typeof","var","void","while","with",
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"class","const","enum","export","extends","import","super","implements",
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"interface","let","package","private","protected","public","static","yield",
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]);
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traverse(ast, {
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MemberExpression(path) {
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if (
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path.node.computed &&
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t.isStringLiteral(path.node.property) &&
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/^[a-zA-Z_$][a-zA-Z0-9_$]*$/.test(path.node.property.value) &&
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!RESERVED.has(path.node.property.value)
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) {
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path.node.computed = false;
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path.node.property = t.identifier(path.node.property.value);
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memberCount++;
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}
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},
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});
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console.log(`[+] 属性简化: ${memberCount}`);
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// ═══════════════════════════════════════════
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// Phase 6: Pass 4 — 字符串拼接折叠
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// ═══════════════════════════════════════════
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console.log("[*] Phase 6: 字符串拼接折叠...");
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let concatCount = 0;
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let round;
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do {
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round = 0;
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traverse(ast, {
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CallExpression(path) {
|
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if (
|
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t.isMemberExpression(path.node.callee) &&
|
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!path.node.callee.computed &&
|
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t.isIdentifier(path.node.callee.property, { name: "concat" }) &&
|
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t.isStringLiteral(path.node.callee.object) &&
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path.node.arguments.length === 1 &&
|
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t.isStringLiteral(path.node.arguments[0])
|
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) {
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path.replaceWith(
|
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t.stringLiteral(
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path.node.callee.object.value + path.node.arguments[0].value
|
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)
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||||
);
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round++;
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}
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},
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});
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concatCount += round;
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} while (round > 0);
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console.log(`[+] 拼接折叠: ${concatCount}`);
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||||
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// ═══════════════════════════════════════════
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// Phase 7: Pass 5 — 常量折叠 (typeof, 简单比较)
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// ═══════════════════════════════════════════
|
||||
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console.log("[*] Phase 7: 常量表达式折叠...");
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|
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let constFoldCount = 0;
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traverse(ast, {
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// "string" == typeof x → 保留 (运行时), 但 typeof "xxx" → "string"
|
||||
UnaryExpression(path) {
|
||||
if (path.node.operator === "typeof" && t.isStringLiteral(path.node.argument)) {
|
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path.replaceWith(t.stringLiteral("string"));
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constFoldCount++;
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||||
}
|
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},
|
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// void 0 → undefined (可选, 增加可读性)
|
||||
// 暂时不做, 可能影响语义
|
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});
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|
||||
console.log(`[+] 常量折叠: ${constFoldCount}`);
|
||||
|
||||
// ═══════════════════════════════════════════
|
||||
// Phase 8: Pass 6 — 清理无用别名声明
|
||||
// ═══════════════════════════════════════════
|
||||
|
||||
console.log("[*] Phase 8: 清理无用别名...");
|
||||
|
||||
let deadCount = 0;
|
||||
|
||||
traverse(ast, {
|
||||
VariableDeclarator(path) {
|
||||
if (
|
||||
t.isIdentifier(path.node.id) &&
|
||||
t.isIdentifier(path.node.init) &&
|
||||
allDecoders.has(path.node.init.name) &&
|
||||
allDecoders.has(path.node.id.name)
|
||||
) {
|
||||
const binding = path.scope.getBinding(path.node.id.name);
|
||||
if (binding && binding.references === 0) {
|
||||
path.remove();
|
||||
deadCount++;
|
||||
}
|
||||
}
|
||||
},
|
||||
});
|
||||
|
||||
console.log(`[+] 清理: ${deadCount}`);
|
||||
|
||||
// ═══════════════════════════════════════════
|
||||
// Phase 9: 生成输出
|
||||
// ═══════════════════════════════════════════
|
||||
|
||||
console.log("[*] Phase 9: 生成代码...");
|
||||
|
||||
const output = generate(ast, {
|
||||
comments: true,
|
||||
compact: false,
|
||||
retainLines: false,
|
||||
concise: false,
|
||||
}).code;
|
||||
|
||||
fs.writeFileSync(OUT, output, "utf-8");
|
||||
|
||||
const origKB = (fs.statSync(SRC).size / 1024).toFixed(1);
|
||||
const newKB = (Buffer.byteLength(output) / 1024).toFixed(1);
|
||||
|
||||
console.log(`\n${"═".repeat(50)}`);
|
||||
console.log(`[=] 解混淆完成`);
|
||||
console.log(` 原始: ${origKB} KB`);
|
||||
console.log(` 输出: ${newKB} KB`);
|
||||
console.log(` 解码替换: ${resolvedCount} (常量传播 ${constPropCount})`);
|
||||
console.log(` 属性简化: ${memberCount}`);
|
||||
console.log(` 拼接折叠: ${concatCount}`);
|
||||
console.log(` 常量折叠: ${constFoldCount}`);
|
||||
console.log(` 死代码清理: ${deadCount}`);
|
||||
console.log(` PW/QQ 别名: ${group1Names.size} | Qg 别名: ${group2Names.size}`);
|
||||
console.log(` 输出: ${OUT}`);
|
||||
console.log(`${"═".repeat(50)}`);
|
||||
|
||||
// 导出映射表
|
||||
const mapOut = path.join(__dirname, "hsw.string-map.json");
|
||||
const mapObj = { "decoder1_PW_QQ": {}, "decoder2_Qg": {} };
|
||||
for (const [k, v] of map1) mapObj.decoder1_PW_QQ[k] = v;
|
||||
for (const [k, v] of map2) mapObj.decoder2_Qg[k] = v;
|
||||
fs.writeFileSync(mapOut, JSON.stringify(mapObj, null, 2), "utf-8");
|
||||
console.log(` 映射: ${mapOut}`);
|
||||
Reference in New Issue
Block a user