live-hub-py/scripts/hook_nonce_origin.py

#!/usr/bin/env python3
"""追查 wupData 信封内 20B nonce 的生成源头。

时序(不可变, 同 hook_cert_keycap): force-stop -> spawn挂起 -> 双bypass ->
resume -> 10s -> patch_guard -> 随机源hooks + Java桥触发 getQUrlData。
命中判定: 窗口内随机源输出与P1中nonce比对 / 直接看SecureRandom调用栈。
"""
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")
UID = 1199666914671

JS = r"""
'use strict';
Process.setExceptionHandler(function(d){
  send({type:'segv', info:{type:d.type, addr:String(d.address)}});
  return true;
});
var base = Process.getModuleByName('libudbauthunify.so').base;
send({type:'armed', base:String(base)});

// ---- Java 随机源 ----
Java.perform(function(){
  try {
    var SR = Java.use('java.security.SecureRandom');
    SR.nextBytes.overload('[B').implementation = function(b){
      var st = Java.use('android.util.Log')
                 .getStackTraceString(Java.use('java.lang.Exception').$new());
      var r = this.nextBytes(b);
      var hex = Array.from(new Uint8Array(b)).map(function(x){
        return ('0'+x.toString(16)).slice(-2);}).join('').slice(0,48);
      send({type:'jsec', n:b.length, head:hex, stack:st});
      return r;
    };
  } catch(e){ send({type:'hookerr', where:'SecureRandom', msg:''+e}); }
});

// ---- 触发证书生成(getQUrlData 组 P1 含 nonce) ----
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 inst=F.use('com.hysdkproxy.LoginProxy').getInstance();
      var q=inst.getQUrlData(__UID__, "", "");
      send({type:'qurl_done', len:q?q.length:0, data:q||''});
    }catch(e){ n+=1; if(n%6===0) send({type:'retry',n:n}); setTimeout(go,5000); }
  }
  setTimeout(go, 8000);
});
""".replace('__UID__', str(UID))


def main():
    d = frida.get_device_manager().add_remote_device('127.0.0.1:31877')
    pid = d.spawn(['com.duowan.kiwi'])
    print(f'spawned {pid}')
    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)
    print('resumed')
    time.sleep(11)
    s.create_script((RE / "evidence/scripts/patch_guard_block_termination.js").read_text()).load()
    print('patch_guard on')

    sc = s.create_script(JS)
    events = []
    got_armed = []

    def on_msg(m, _):
        if m.get('type') == 'error':
            print('JS ERR:', str(m)[:240]); return
        if m.get('type') != 'send':
            return
        p = m.get('payload') or {}
        t = p.get('type')
        if t != 'retry':
            events.append(p)
        if t == 'armed':
            got_armed.append(1); print('[armed]', p['base'])
        elif t == 'jsec':
            lines = [x.strip() for x in p['stack'].split('\n')]
            frames = [x for x in lines if 'huya' in x.lower() or 'udb' in x.lower()
                      or 'nonce' in x.lower()][:5]
            print(f"[SecureRandom] {p['n']}B head={p['head']}")
            for f in (frames or lines[1:4]):
                print("    ", f[:110])
        elif t == 'hookerr':
            print('[hookerr]', p)
        elif t == 'qurl_done':
            print('[qurl_done]', p.get('len'), 'head:', (p.get('data') or '')[:60])

    sc.on('message', on_msg)
    sc.load()
    assert got_armed

    deadline = time.time() + 120
    while time.time() < deadline:
        time.sleep(2)
        if any(e.get('type') == 'qurl_done' for e in events):
            time.sleep(8)
            break

    Path('/tmp/opencode/nonce_trace.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):
        print(f'===== 尝试 #{attempt+1} =====')
        try:
            main()
            break
        except frida.InvalidOperationError as e:
            print(f'session detached: {e}')
            subprocess.run(['adb', 'shell', 'am', 'force-stop', 'com.duowan.kiwi'])
            time.sleep(3)
        except Exception as e:
            print(f'err: {e}')
            subprocess.run(['adb', 'shell', 'am', 'force-stop', 'com.duowan.kiwi'])
            time.sleep(3)