'use strict';
// ============================================================================
// bypass_all.js — 虎牙 com.duowan.kiwi (13.4.22) 反 frida 绕过 · 一体化脚本
// ============================================================================
// 合并自 RE 仓库三脚本 (实测配方, R31-R39 全程验证):
//   1. bypass_msaoaid_maps_art_callsite.js  — libmsaoaidsec 线程名/fd 掩盖 + maps 清理分支跳转 + ART 完整性 callsite NOP
//   2. mask_frida_maps_only.js              — libc 层 /proc/self/maps 内容 'frida-agent' 掩写
//   3. patch_guard_block_termination.js     — kill/tgkill/exit/abort 自终止拦截 + msaoaid crash-guard 补丁
//
// 用法 (必须 spawn 挂起中、resume 之前加载!):
//   const opts = { patchGuardDelayMs: 3000 };          // B 层延迟, 传参可调
//   const src = 'globalThis.BYPASS_OPTS=' + JSON.stringify(opts) + ';\n' + bypassSrc;
//   s.create_script(src).load();                        // 然后 d.resume(pid)
//
// 时序语义:
//   A 层 (立即): maps 线索掩盖 — 必须 resume 前就位, 否则启动检测线程先读到 frida 痕迹
//   B 层 (延迟): 终止拦截会无差别吞掉 exit/abort, 过早加载会卡死启动期合法退出
//               → 默认 3000ms 后安装; 若 App 秒死调小, 若启动期被杀调大
// ============================================================================

var OPTS = { patchGuardDelayMs: 3000, persist: false };
try { if (globalThis.BYPASS_OPTS) OPTS = Object.assign(OPTS, globalThis.BYPASS_OPTS); } catch (_) {}

function emit(o) {
  // 关键: 钩子上下文 (dlopen/拦截器 onEnter, 主线程启动期) 内直接 send() 会死锁主线程
  // (R40 ANR trace: main 阻塞在 frida-agent) — 一律入队, setImmediate 刷出
  try { pendingEmits.push(Object.assign({ src: 'bypass_all' }, o)); setImmediate(flushEmits); } catch (_) {}
}
var pendingEmits = [];
function flushEmits() {
  while (pendingEmits.length) { try { send(pendingEmits.shift()); } catch (_) {} }
}

// ---------- 持久化调试日志 (默认关) ----------
var logFile = null;
function persist(row) {
  if (!OPTS.persist) return;
  try {
    if (logFile === null) logFile = new File('/data/user/0/com.duowan.kiwi/cache/bypass-all-' + Process.id + '.jsonl', 'a');
    row.tid = Process.getCurrentThreadId();
    logFile.write(JSON.stringify(row) + '\n');
    logFile.flush();
  } catch (_) {}
}

function exportOf(name) {
  try { if (typeof Module.getGlobalExportByName === 'function') return Module.getGlobalExportByName(name); } catch (_) {}
  try { if (typeof Module.findGlobalExportByName === 'function') return Module.findGlobalExportByName(null, name); } catch (_) {}
  try { return Module.findExportByName(null, name); } catch (_) { return null; }
}

// ============================================================================
// A1) libmsaoaidsec.so: 线程名/fd 掩盖 + predicate 分支跳转 + ART callsite NOP
//     (原 bypass_msaoaid_maps_art_callsite.js, offsets 对应 13.4.22 arm64)
// ============================================================================
var msaoaid = { installed: false };
function readStr(pointer, length) { try { return pointer.readCString(length) || ''; } catch (_) { return ''; } }

function installMsaoaid(source) {
  if (msaoaid.installed) return;
  var module = Process.findModuleByName('libmsaoaidsec.so');
  if (module === null) return;
  msaoaid.installed = true;
  var branch = module.base.add(0x1c4a0);
  var continuePath = module.base.add(0x1c4b4);
  var artCallsite = module.base.add(0x1ceec);
  persist({ event: 'installed', source: source, base: module.base.toString() });
  emit({ event: 'A-msaoaid-patched', base: module.base.toString() });

  // 线程名掩盖: /proc/<tid>/cmdline 读取处的 gmain/gum-js-loop/linjector → pool-worker
  [0x1c0e4, 0x1c0f4].forEach(function (offset) {
    Interceptor.attach(module.base.add(offset), {
      onEnter() {
        var buffer = this.context.sp.add(0x18);
        var value = readStr(buffer, 96);
        if (!value.startsWith('Name:\tgmain') && !value.startsWith('Name:\tgum-js-loop') && !value.startsWith('Name:\tlinjector')) return;
        buffer.writeUtf8String('Name:\tpool-worker');
        persist({ event: 'name-masked', offset: '0x' + offset.toString(16) });
      },
    });
  });

  // fd 扫描掩盖: 'linjector' → 'xxxxxxxxx'
  Interceptor.attach(module.base.add(0x1c214), {
    onEnter() {
      var buffer = this.context.sp.add(0x288);
      var value = readStr(buffer, 512);
      var index = value.indexOf('linjector');
      if (index < 0) return;
      buffer.add(index).writeUtf8String('xxxxxxxxx');
      persist({ event: 'fd-masked' });
    },
  });

  // predicate 分支: 检出 frida 线索后的清理分支 → 直接跳继续路径; ART 完整性周期 callsite → NOP
  try {
    Memory.patchCode(branch, 4, function (code) {
      var w = new Arm64Writer(code, { pc: branch });
      w.putBranchAddress(continuePath);
      w.flush();
    });
    Memory.patchCode(artCallsite, 4, function (code) {
      var w = new Arm64Writer(code, { pc: artCallsite });
      w.putNop();
      w.flush();
    });
    persist({ event: 'branches-patched' });
  } catch (error) {
    emit({ event: 'A-patch-error', error: String(error) });
  }
}

// msaoaid 可能在 spawn 时已加载, 也可能稍后 dlopen — 双路触发
['dlopen', 'android_dlopen_ext'].forEach(function (name) {
  var address = exportOf(name);
  if (address !== null) Interceptor.attach(address, {
    onEnter() { installMsaoaid(name + ':enter'); },
    onLeave() { installMsaoaid(name + ':leave'); },
  });
});
installMsaoaid('initial');

// ============================================================================
// A2) libc 层 maps 内容掩盖: open*/fopen 记录 maps fd → read/pread64 时掩写 frida-agent
//     (原 mask_frida_maps_only.js)
// ============================================================================
var trackedFds = {};
function trackOpen(pathPointer, fd) {
  var path = '';
  try { path = pathPointer.isNull() ? '' : pathPointer.readCString(); } catch (_) { return; }
  if (fd >= 0 && /(?:^|\/)maps$/.test(path)) trackedFds[fd] = path;
}
['open', 'open64', 'fopen'].forEach(function (name) {
  var address = exportOf(name);
  if (address === null) return;
  Interceptor.attach(address, {
    onEnter(args) { this.path = args[0]; },
    onLeave(retval) { trackOpen(this.path, retval.toInt32()); },
  });
});
var openat = exportOf('openat');
if (openat !== null) Interceptor.attach(openat, {
  onEnter(args) { this.path = args[1]; },
  onLeave(retval) { trackOpen(this.path, retval.toInt32()); },
});
var closeFn = exportOf('close');
if (closeFn !== null) Interceptor.attach(closeFn, {
  onEnter(args) { delete trackedFds[args[0].toInt32()]; },
});
function maskMapsRead(buffer, length, path) {
  if (!path || length <= 0) return;
  try {
    var bytes = new Uint8Array(buffer.readByteArray(length));
    var value = '';
    for (var i = 0; i < bytes.length; i++) value += String.fromCharCode(bytes[i]);
    if (value.indexOf('frida-agent') < 0 && value.indexOf('gum-js-loop') < 0 && value.indexOf('linjector') < 0) return;
    value = value.replace(/frida-agent/gi, 'xxxxxxxxxxx')
                 .replace(/gum-js-loop/g, 'pool-worker')
                 .replace(/linjector/g, 'xxxxxxxxx');
    for (var j = 0; j < length; j++) buffer.add(j).writeU8(value.charCodeAt(j) || 0);
  } catch (_) {}
}
['read', 'pread64'].forEach(function (name) {
  var address = exportOf(name);
  if (address === null) return;
  Interceptor.attach(address, {
    onEnter(args) { this.buffer = args[1]; this.path = trackedFds[args[0].toInt32()] || ''; },
    onLeave(retval) { maskMapsRead(this.buffer, retval.toInt32(), this.path); },
  });
});
emit({ event: 'A-maps-mask-installed' });

// ============================================================================
// B 层 (延迟 OPTS.patchGuardDelayMs): 自终止拦截 + msaoaid crash-guard 补丁
//     (原 patch_guard_block_termination.js)
// ============================================================================
function installPatchGuard() {
  var keep = [];
  var ownPid = Process.id;
  function replaceFn(name, returnType, argumentTypes, callback) {
    var address = exportOf(name);
    if (address === null) return;
    try {
      var native = new NativeCallback(callback, returnType, argumentTypes);
      keep.push(native);
      Interceptor.replace(address, native);
    } catch (_) {}
  }
  replaceFn('kill', 'int', ['int', 'int'], function (pid) { return Number(pid) === ownPid ? 0 : -1; });
  replaceFn('tgkill', 'int', ['int', 'int', 'int'], function (tgid, tid) { return (Number(tgid) === ownPid || Number(tid) === ownPid) ? 0 : -1; });
  replaceFn('exit', 'void', ['int'], function () {});
  replaceFn('_exit', 'void', ['int'], function () {});
  replaceFn('_Exit', 'void', ['int'], function () {});
  replaceFn('abort', 'void', [], function () {});
  replaceFn('raise', 'int', ['int'], function () { return 0; });

  // msaoaid crash-guard: 属性读取触发点后补丁 0x20ca8 (x0 → 0)
  var guardPatched = false;
  function patchGuard(module) {
    if (guardPatched) return;
    var address = module.base.add(0x20ca8);
    try {
      Memory.protect(address, 4, 'rwx');
      var writer = new Arm64Writer(address);
      writer.putMovRegReg('x0', 'xzr');
      writer.flush(); writer.dispose();
      guardPatched = true;
      emit({ event: 'B-guard-patched' });
    } catch (error) { emit({ event: 'B-guard-error', error: String(error) }); }
  }
  var prop = exportOf('__system_property_get');
  if (prop !== null) Interceptor.attach(prop, {
    onEnter(args) {
      var name = ''; try { name = args[0].readCString(); } catch (_) { return; }
      if (name !== 'ro.build.version.sdk') return;
      var module = Process.findModuleByName('libmsaoaidsec.so');
      if (module !== null) patchGuard(module);
    },
  });
  emit({ event: 'B-patch-guard-installed', delayMs: OPTS.patchGuardDelayMs });
}

setTimeout(installPatchGuard, OPTS.patchGuardDelayMs);
emit({ event: 'armed', pid: Process.id, patchGuardDelayMs: OPTS.patchGuardDelayMs });