#!/usr/bin/env python3
"""抓 hyCred 签发链: 挂 saveLoginData(落盘) + LoginCred handler(vtable探测)。

用法: 脚本跑起来后, 在手机上 手动退出登录 -> 重新登录 一次。
捕获: 登录态JSON明文(含cred字段) / saveLoginData 入参 / LoginCred handler 触发。
"""
from __future__ import annotations

import json
import subprocess
import time
from pathlib import Path

import frida

RE = Path("/Users/yml/codes/Reverse-Engineering-Agent-Universal-v3.0")

JS = r"""
var base = Process.getModuleByName('libudbauthunify.so').base;
send({type:'armed'});
function hx(p,n){ try{ return Array.from(new Uint8Array(p.readByteArray(n))).map(x=>('0'+x.toString(16)).slice(-2)).join(''); }catch(e){ return 'ERR'; } }
function rdStr(p){ try{
  var b0=p.readU8();
  if((b0&1)===0){ var l=b0>>1; return {len:l,v:l?hx(p.add(1),Math.min(l,256)):''}; }
  var len=parseInt(p.add(8).readU64().toString());
  if(len>4096) return {len:len,v:''};
  return {len:len,v:hx(p.add(16).readPointer(),len)};
}catch(e){ return {len:-1,v:String(e)}; } }
Interceptor.attach(base.add(0x265a6c), {
  onEnter: function(a){ send({type:'bean', data:hx(a[1],2048)}); }
});
Interceptor.attach(base.add(0x265fb0), {
  onEnter: function(a){ send({type:'bean', data:hx(a[2],2048)}); }
});

Java.perform(function(){
  var n=0;
  function go(){
    try{
      var seed=Java.use('com.duowan.kiwi.base.login.udb.HuyaLoginProxy');
      var F=Java.ClassFactory.get(seed.class.getClassLoader());
      var done=false;
      ['com.huyaudbunify.HuyaAuth','com.hysdkproxy.HuyaAuth','com.huyaudbunify.sdk.HuyaAuth'].forEach(function(cn){
        if(done) return;
        try{
          var C=F.use(cn);
          var inst = C.getInstance ? C.getInstance() : null;
          var r = inst ? inst.getCred(1199666914671) : C.getCred(1199666914671);
          send({type:'java_cred', cls:cn, r:String(r).slice(0,400)});
          done=true;
        }catch(e2){}
      });
      if(!done) throw new Error('no HuyaAuth');
    }catch(e){ n+=1; if(n%6===0) send({type:'retry',n:n}); setTimeout(go,5000); }
  }
  setTimeout(go, 15000);
});
Interceptor.attach(base.add(0x265524), {
  onEnter: function(a){ this.uid=a[1].toString(); this.out=a[2]; },
  onLeave: function(){ send({type:'getcred', uid:this.uid, out:rdStr(this.out)}); }
});
"""


def main():
    d = frida.get_device_manager().add_remote_device('127.0.0.1:31877')
    pid = d.spawn(['com.duowan.kiwi'])
    s = d.attach(pid)
    s.create_script((RE / "evidence/scripts/bypass_msaoaid_maps_art_callsite.js").read_text()).load()
    s.create_script((RE / "evidence/scripts/mask_frida_maps_only.js").read_text()).load()
    d.resume(pid)
    time.sleep(11)
    s.create_script((RE / "evidence/scripts/patch_guard_block_termination.js").read_text()).load()
    print('armed. >>> 请在手机上退出登录并重新登录 <<<')

    sc = s.create_script(JS)
    events = []
    def on_msg(m, _):
        if m.get('type') == 'error':
            print('JS ERR:', str(m)[:200]); return
        if m.get('type') != 'send':
            return
        p = m.get('payload') or {}
        t = p.get('type')
        events.append(p)
        if t == 'vt_attached':
            print(f"[vt] {p['name']} slot{p['slot']} @+{p['fp']}")
        elif t == 'saveLD_str':
            print(f"[saveLD_str] str={p['str']['t']}:{p['str']['len']}\n  bean={p['bean_head']}\n  bt={p['bt']}")
        elif t == 'saveLD_bean':
            print(f"[saveLD_bean] flag={p['flag']}\n  bean={p['bean_head']}\n  bt={p['bt']}")
        elif t == 'cred_unpack':
            print(f"[cred_unpack] in={p['in']['t']}:{p['in']['len']}:{p['in']['v'][:160]} <- {p['ra']}")
        elif t == 'bigaes':
            print(f"[bigaes] len={p['x2']['len']} head={p['x2']['v'][:120]}")
        elif t == 'vtable':
            print(f"[VT!] {p['name']}#{p['slot']} a1={p['a1']} bt={p['bt']}")
    sc.on('message', on_msg)
    sc.load()
    deadline = time.time() + 300
    while time.time() < deadline:
        time.sleep(3)
        if any(e.get('type')=='bean' for e in events) and any(e.get('type')=='getcred' for e in events):
            time.sleep(10)
            break
    Path('/Users/yml/codes/douyu_login_py/evidence/credtrace.json').write_text(json.dumps(events))
    from collections import Counter
    print('saved:', Counter(e.get('type') for e in events))


if __name__ == '__main__':
    for attempt in range(4):
        try:
            main()
            break
        except frida.InvalidOperationError as e:
            print('detached:', e)
            subprocess.run(['adb', 'shell', 'am', 'force-stop', 'com.duowan.kiwi'])
            time.sleep(3)