dfpReport: 确定加密为逐字节XOR(动态keystream)+同步pair捕获+IDA导出线索, 记录破解进度

2026-08-26 14:17:58 +08:00
parent acb0a737eb
commit 4eec01568f
38 changed files with 4942 additions and 3 deletions
@@ -0,0 +1,103 @@
+#!/usr/bin/env python3
+"""dump 魔数缓冲区: 找到魔数地址后, dump 前后完整内存到证据文件。
+
+命中即写入文件(不依赖退出), 打印明文头与密文长度。
+"""
+from __future__ import annotations
+
+import time
+from pathlib import Path
+
+import frida
+
+RE = Path("/Users/yml/codes/Reverse-Engineering-Agent-Universal-v3.0")
+OUT = Path("/Users/yml/codes/douyu_login_py/evidence/dfp_buffer_dump.json")
+
+JS = r"""
+'use strict';
+Process.setExceptionHandler(function(d){ return true; });
+send({type:'armed'});
+
+function hex(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 doScan(){
+  var found = false;
+  try{
+    Process.enumerateRanges('r--').forEach(function(r){
+      if (r.size > 1024*1024*256) return;
+      try{
+        var m = Memory.scanSync(r.base, r.size, '57 18 82 cf 66 4b b3 94');
+        m.forEach(function(x){
+          var addr = x.address;
+          // 只 dump 每个 4KB 页内第一个命中 (去重)
+          var pre256 = hex(addr.sub(64), 64);
+          var post = hex(addr.add(10), 4096);
+          send({type:'dump', addr:String(addr), pre:pre256, post:post});
+          found = true;
+        });
+      }catch(e){}
+    });
+  }catch(e){}
+  send({type:'tick', found:found});
+}
+
+var iv = setInterval(function(){ doScan(); }, 3000);
+"""
+
+
+def main():
+    device = frida.get_device_manager().add_remote_device("127.0.0.1:31877")
+    pid = device.spawn(["com.duowan.kiwi"])
+    print(f"[*] spawned pid={pid}", flush=True)
+    session = device.attach(pid)
+    session.create_script(
+        (RE / "evidence/scripts/bypass_msaoaid_maps_art_callsite.js").read_text()
+    ).load()
+    session.create_script(
+        (RE / "evidence/scripts/mask_frida_maps_only.js").read_text()
+    ).load()
+    device.resume(pid)
+    time.sleep(11)
+    session.create_script(
+        (RE / "evidence/scripts/patch_guard_block_termination.js").read_text()
+    ).load()
+
+    dumped = []
+
+    def on_message(message, data):
+        if message.get("type") == "error":
+            print("[JS-ERR]", str(message)[:160], flush=True); return
+        if message.get("type") != "send":
+            return
+        p = message.get("payload") or {}
+        t = p.get("type")
+        if t == "dump":
+            addr = p.get("addr")
+            # 去重 (同地址不重复存)
+            if any(d.get("addr") == addr for d in dumped):
+                return
+            rec = {"addr": addr, "pre": p.get("pre"), "post": p.get("post")}
+            dumped.append(rec)
+            # 立即持久化
+            OUT.write_text(__import__("json").dumps(dumped, indent=1))
+            print(f"[DUMP] @{addr} pre={p.get('pre','')[:64]} postlen={len(p.get('post',''))//2} saved={len(dumped)}", flush=True)
+        elif t == "tick":
+            print(f"[tick] found={p.get('found')} total_dumps={len(dumped)}", flush=True)
+
+    script = session.create_script(JS)
+    script.on("message", on_message)
+    script.load()
+    print("[*] dump 扫描中 (每3s), 命中即持久化。请触发登录 (命中后可 pkill)", flush=True)
+    try:
+        while True:
+            time.sleep(5)
+    except KeyboardInterrupt:
+        pass
+    print(f"[*] 结束, 共 {len(dumped)} 个 dump -> {OUT}", flush=True)
+
+
+if __name__ == "__main__":
+    main()