docs(huya): 模拟器存活闪退诊断报告与 Frida 探测脚本证据

- 诊断报告: attach 主进程静默退出/EGL 崩溃, 仅约 4s 窗口可抓帧 - scripts: attach/spawn/hook/emu 系列 Frida 脚本与抓帧/验证工具 - evidence: identity/reqchain/frame/inputbuf/magic_buf/propedge 抓取样本, emu_* 存活对比, diag_* 策略实验, baseline 裸测基准
2026-08-27 17:58:32 +08:00
parent 36b5d78050
commit 49c5c36c05
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+#!/usr/bin/env python3
+"""复现实验: attach + 只读 Interceptor 是否让 msaoaidsec 检测失效 (App 存活).
+
+假设: 空 attach (E0) 2s 静默死; attach+trace的只读 Interceptor 装到 msaoaidsec 内
+      (+0x1bfac 线程名检测器入口 / +0x1c0e4,0x1c0f8 strstr callsite) 后 App 存活.
+实验设计 (每轮):
+  1. spawn → attach → 加载 trace_msaoaid_thread_strstr_plt.js (只读, 不patch不mask)
+  2. resume → 用 /proc 精确监控主进程 20s
+  3. 记录: 存活? 死亡时刻? 是否EGL崩? 收到的strstr事件?
+控制组: 相同流程但不加载任何脚本 (= E0 复现)
+"""
+from pathlib import Path
+import frida, time, json, subprocess, sys, re
+
+REMOTE = "127.0.0.1:31878"
+ADB = ["adb", "-s", "127.0.0.1:5555"]
+PACKAGE = "com.duowan.kiwi"
+RE = Path("/Users/yml/codes/Reverse-Engineering-Agent-Universal-v3.0")
+
+def sh(*a): return subprocess.run(a, capture_output=True, text=True)
+def adb(*a): return sh(*ADB, *a)
+
+def main_pid():
+    r = adb("shell", "pidof", PACKAGE)
+    for p in r.stdout.strip().split():
+        rr = adb("shell", "cat", f"/proc/{p}/cmdline")
+        if rr.stdout.strip("\x00").strip() == PACKAGE:
+            return int(p)
+    return None
+
+def run_round(d, rnd, script_name=None, observe=20):
+    adb("shell", "am", "force-stop", PACKAGE)
+    time.sleep(1.2)
+    adb("shell", "logcat", "-c")
+    pid = d.spawn([PACKAGE])
+    session = d.attach(pid)
+    t0 = time.time()
+    events = []
+    def on(m, dta):
+        if m.get('type') != 'send': return
+        p = m.get('payload') or {}
+        events.append(p)
+        ev = p.get('event', '?')
+        if ev in ('msaoaid-thread-strstr',):
+            print(f"[r{rnd} +{time.time()-t0:5.2f}s] STRSTR needle={p.get('needle')} haystack={p.get('haystack','')[:30]!r}", flush=True)
+        elif ev == 'msaoaid-thread-strstr-return':
+            print(f"[r{rnd} +{time.time()-t0:5.2f}s] STRSTR-RET needle={p.get('needle')} hit={p.get('returnedNonNull')}", flush=True)
+    if script_name:
+        sc = session.create_script((RE / "evidence/scripts" / script_name).read_text())
+        sc.on('message', on)
+        sc.load()
+    d.resume(pid)
+    print(f"[r{rnd}] resume at +{(time.time()-t0)*1000:.0f}ms script={script_name}", flush=True)
+    # 监控
+    died_at = None
+    while time.time() - t0 < observe:
+        time.sleep(2)
+        if main_pid() is None:
+            died_at = time.time() - t0
+            break
+    cr = adb("shell", "logcat", "-d", "-b", "crash", "-t", "8").stdout
+    status = "存活" if died_at is None else f"死@+{died_at:.1f}s"
+    egl = "EGL" in cr or "libEGL" in cr
+    print(f"[r{rnd}] 结果: {status} EGL崩={egl} events={len(events)}", flush=True)
+    try: session.detach()
+    except Exception: pass
+    try: d.kill(pid)
+    except Exception: pass
+    time.sleep(1)
+    return {"round": rnd, "script": script_name, "died_at": died_at, "egl": egl, "n_events": len(events)}
+
+def main():
+    scripts = sys.argv[1:] or ["None", "trace_msaoaid_thread_strstr_plt.js"]
+    d = frida.get_device_manager().add_remote_device(REMOTE)
+    results = []
+    for script in scripts:
+        for rnd in (1, 2):
+            r = run_round(d, rnd, None if script == "None" else script)
+            results.append(r)
+            print(f"  → {r}", flush=True)
+    out = Path("/tmp/attach_trace_survival.json")
+    out.write_text(json.dumps(results, indent=1, ensure_ascii=False))
+    print(f"[*] -> {out}", flush=True)
+
+if __name__ == "__main__":
+    main()