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 +1,112 @@
+#!/usr/bin/env python3
+"""完整 dump 明文采集数据区域 (0x7814096d19 JSON 附近 + 0x78133bf220 键值结构)。
+
+拿到加密前的完整明文 = 解密 dfpReport 的关键! dump 前后 8KB 到文件。
+"""
+from __future__ import annotations
+
+import json
+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_plaintext_full.json")
+
+JS = r"""
+'use strict';
+Process.setExceptionHandler(function(d){ return true; });
+send({type:'armed'});
+
+// 锚点: JSON 明文 + t1 键值结构
+var ANCHORS = [
+  ['json', '74 65 72 6d 69 6e 61 6c 54 79 70 65 22 3a 31'],     // terminalType":1
+  ['t1kv', '74 65 72 6d 69 6e 61 6c'],                            // terminal (键值结构内)
+];
+
+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 scan(){
+  try{
+    Process.enumerateRanges('r--').forEach(function(r){
+      if (r.size > 1024*1024*256) return;
+      try{
+        ANCHORS.forEach(function(a){
+          var hits = Memory.scanSync(r.base, r.size, a[1]);
+          hits.slice(0, 5).forEach(function(x){
+            var addr = x.address;
+            // JSON: dump 前 512 + 后 8192
+            var pre = '', post = '';
+            try{ pre = hex(addr.sub(512), 512); }catch(e){}
+            try{ post = hex(addr, 8192); }catch(e){}
+            send({type:'dump', anchor:a[0], addr:String(addr), pre:pre, post:post});
+          });
+        });
+      }catch(e){}
+    });
+  }catch(e){}
+  send({type:'tick'});
+}
+
+setInterval(function(){ try{ scan(); }catch(e){} }, 4000);
+"""
+
+
+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)
+
+    events = []
+
+    def on_message(message, data):
+        if message.get("type") == "error":
+            print("[JS-ERR]", str(message)[:200], 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')
+            if any(e.get('addr') == addr for e in events): return
+            rec = {"anchor": p.get('anchor'), "addr": addr,
+                   "pre": p.get('pre'), "post": p.get('post')}
+            events.append(rec)
+            OUT.write_text(json.dumps(events, ensure_ascii=False))
+            # 打印 post 的可读部分 (前 400B)
+            post = bytes.fromhex(p.get('post', ''))
+            asc = ''.join(chr(b) if 32 <= b < 127 else '.' for b in post[:400])
+            print(f"[dump:{p.get('anchor')}] @{addr}", flush=True)
+            print(f"    {asc}", flush=True)
+
+    script = session.create_script(JS)
+    script.on("message", on_message)
+    script.load()
+    print("[*] 主JS 已装载(resume前), 加载 bypass + resume", flush=True)
+    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()
+    print("[*] 已 resume, dump 明文区 (需触发登录采集后可 pkill)", flush=True)
+    try:
+        while True:
+            time.sleep(5)
+    except KeyboardInterrupt:
+        pass
+    print(f"[*] 结束, {len(events)} -> {OUT}", flush=True)
+
+
+if __name__ == "__main__":
+    main()