feat(huya): bean为指针对象 - 定位getCred@0x265524出口为最终抓点

docs/虎牙hyCred签发-侦察笔记.md

@@ -152,3 +152,11 @@ sendMessage(0x1001, json) 载荷(char*直读):
 - 六字段与静态预测完全吻合; 空对象/空数组原样传
 剩余: 响应侧(doMSG a2偏移待修, cred响应未读到) + 信封包装层。
 证据: evidence/cred_issue_trace.json
+
+## Round9: bean为指针对象, 改挂getCred出口
+
+saveLoginData bean(1536B dump)=C++对象, cred在堆上经指针引用, 非内联。
+最直接抓点: BusinessCfg::getCred(ulong,string&out)@0x265524
+  -> onLeave 读 out(x2) std::string 即152字符hyCred原文。
+scripts/hook_beandump.py 已建(时序模板可复用), 下轮改钩子地址重跑一次登录即得。
+另: 响应JSON键已确认含"cred"键(0x1c36e8)。

scripts/hook_beandump.py

@@ -0,0 +1,85 @@
+#!/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:'+e; } }
+Interceptor.attach(base.add(0x265a6c), {
+  onEnter: function(a){ send({type:'bean', data:hx(a[1],1536)}); }
+});
+Interceptor.attach(base.add(0x265fb0), {
+  onEnter: function(a){ send({type:'bean', data:hx(a[2],1536)}); }
+});
+"""
+
+
+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') == 'saveLD_bean' for e in events):
+            time.sleep(10)
+            break
+    Path('/Users/yml/codes/douyu_login_py/evidence/beandump.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)