docs(huya): 分析 getGUID 生成机制 - getter读缓存/init生成/硬锚底层硬件

- phone_stalk_getguid: Stalker 跟踪 getGUID(0x20f8c8) 执行, 揭示内部调用 (art::JNI::NewStringUTF 外层, libhydeviceid 内部函数+jsemalloc, 不读属性) - phone_getguid_ioctl: getGUID 窗口 ioctl/openat/property_get 追踪 -> ioctl=0, 确认是 getter 非生成器 - phone_init_ioctl: init()(0x20e6e4) 窗口追踪 -> 巨大 ioctl 噪音(App启动) + open fileshydckey(设备密钥) - getguid_stalk/ioctl/init 证据结论: 32hex GUID = init 时用底层硬件指纹(SoC序列号等不可改)+hydckey经OLLVM保护算法生成并缓存; getGUID 只是读取。单机不可铸造(种子为不可改硬件ID)。
2026-08-28 12:36:17 +08:00
parent 0c6aff6a6d
commit 022357ad79
6 changed files with 99047 additions and 0 deletions
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+"""真机: 确认 getGUID 生成时是否 ioctl/openat 读底层硬件(而非属性/文件).
+
+hook libc ioctl + openat + __system_property_get, getGUID(0x20f8c8) onEnter/onLeave 设窗口,
+窗口内记录调用的 ioctl(fd/request) / openat(path) / 属性读取。决定 32hex 硬件输入来源。
+
+用法:
+  /Users/yml/codes/Reverse-Engineering-Agent-Universal-v3.0/.venv/bin/python \
+      scripts/phone_getguid_ioctl.py [serial] [remote]
+输出:
+  evidence/diag_phone/getguid_ioctl.json
+"""
+from __future__ import annotations
+
+import json
+import subprocess
+import sys
+import time
+from pathlib import Path
+
+import frida
+
+SERIAL = sys.argv[1] if len(sys.argv) > 1 else "5dd8c93f"
+REMOTE = sys.argv[2] if len(sys.argv) > 2 else "127.0.0.1:31878"
+PACKAGE = "com.duowan.kiwi"
+REPO = Path("/Users/yml/codes/douyu_login_py")
+OUT = REPO / "evidence" / "diag_phone" / "getguid_init.json"
+RE = Path("/Users/yml/codes/Reverse-Engineering-Agent-Universal-v3.0")
+ART_CALLSITE = RE / "evidence" / "scripts" / "bypass_msaoaid_maps_art_callsite.js"
+GETGUID_OFF = 0x20E6E4
+
+JS = r"""
+'use strict';
+var inGuid=false, hooked=false, iosHooked=false;
+
+function hookIo(){
+  if(iosHooked) return;
+  try{
+    var ioctl = Module.findExportByName('libc.so','ioctl');
+    var openat = Module.findExportByName('libc.so','openat');
+    var open = Module.findExportByName('libc.so','open');
+    if(!ioctl && !openat && !open) return;
+    iosHooked=true;
+    if(ioctl) Interceptor.attach(ioctl,{onEnter:function(a){ if(inGuid){ try{ send({type:'ioctl', fd:a[0].toInt32(), req:a[1].toInt32()}); }catch(e){} } }});
+    if(openat) Interceptor.attach(openat,{onEnter:function(a){ if(inGuid){ try{ var p=a[1].readCString()||'?'; send({type:'openat', p:p}); }catch(e){} } }});
+    if(open) Interceptor.attach(open,{onEnter:function(a){ if(inGuid){ try{ send({type:'open', p:a[0].readCString()||'?'}); }catch(e){} } }});
+    send({type:'io-hooked'});
+  }catch(e){ send({type:'io-err', e:String(e)}); }
+}
+
+function hookGetGUID(){
+  if(hooked) return;
+  var md=Process.findModuleByName('libhydeviceid.so');
+  if(!md) return;
+  hooked=true;
+  Interceptor.attach(md.base.add(0x20e6e4),{  // init()
+    onEnter:function(){ inGuid=true; send({type:'g-enter'}); },
+    onLeave:function(){ inGuid=false; send({type:'g-leave'}); }
+  });
+  send({type:'guid-hooked'});
+}
+setInterval(hookGetGUID,200);
+setInterval(hookIo,200);
+
+setTimeout(function(){
+  Java.perform(function(){
+    try{
+      var NE=Java.use('com.huya.security.hydeviceid.NativeEntry');
+      send({type:'cls-ok'});
+      send({type:'call', v:NE['init']()});  // 主动 init
+    }catch(e){ send({type:'java-err', e:String(e).slice(0,120)}); }
+  });
+}, 8000);
+"""
+
+
+def adb(*a):
+    return subprocess.run(["adb", "-s", SERIAL, *a], capture_output=True, text=True)
+
+
+def main():
+    OUT.parent.mkdir(parents=True, exist_ok=True)
+    adb("shell", "am", "force-stop", PACKAGE)
+    time.sleep(1.5)
+    d = frida.get_device_manager().add_remote_device(REMOTE)
+    pid = d.spawn([PACKAGE])
+    print(f"[*] spawn pid={pid}", flush=True)
+    session = d.attach(pid)
+    det = []
+    session.on("detached", lambda r, dd: det.append({"reason": r, "detail": str(dd)}) or print(f"[*] detached {r} {dd}", flush=True))
+    session.create_script(ART_CALLSITE.read_text()).load()
+    result = {"ioctl": [], "openat": [], "props": [], "detached": det}
+    def on_message(m, data):
+        if m.get("type") == "error":
+            print("[JS-ERR]", str(m)[:200], flush=True); return
+        p = m.get("payload") or {}
+        t = p.get("type")
+        if t == "ioctl":
+            result["ioctl"].append(p); print(f"[ioctl] fd={p.get('fd')} req=0x{p.get('req'):x}", flush=True)
+        elif t == "openat":
+            result["openat"].append(p); print(f"[openat] {p.get('p')}", flush=True)
+        elif t == "open":
+            result["openat"].append(p); print(f"[open] {p.get('p')}", flush=True)
+        elif t in ("g-enter","g-leave","guid-hooked","io-hooked","cls-ok","call"):
+            print(f"[*] {t}", p if t=="call" else "", flush=True)
+        elif t in ("io-err","java-err"):
+            print(f"[!] {t}: {p.get('e')}", flush=True)
+    sc = session.create_script(JS)
+    sc.on("message", on_message)
+    sc.load()
+    d.resume(pid)
+    print("[*] resumed", flush=True)
+    time.sleep(9)
+    result["detached"] = det
+    OUT.write_text(json.dumps(result, indent=1, ensure_ascii=False), encoding="utf-8")
+    print(f"[*] ioctl={len(result['ioctl'])} openat={len(result['openat'])} saved {OUT}")
+
+
+if __name__ == "__main__":
+    main()