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 +1,117 @@
+#!/usr/bin/env python3
+"""重 hook datadiv 解码器: 读返回值指向内存的前 64B hex。
+
+datadiv 函数解密一个数据块(不只是字符串), 魔数 5718 / 设备数据 / key
+可能藏在解码后的内存里。命中(含 5718 或 android)即持久化。
+"""
+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_datadiv_hex.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'; }
+}
+
+var hooked = 0;
+function hookMod(modName){
+  var m = null;
+  try{ m = Process.getModuleByName(modName); }catch(e){ return false; }
+  m.enumerateExports().forEach(function(exp){
+    if (exp.name.indexOf('datadiv') < 0) return;
+    try{
+      Interceptor.attach(exp.address, {
+        onLeave: function(ret){
+          var p = ret;
+          if (p.isNull()) return;
+          var h64 = '';
+          try{ h64 = hex(p, 64); }catch(e){ return; }
+          if (h64.indexOf('ERR') >= 0) return;
+          // 命中关键词: 魔数 / android / 可读字符串
+          var low = h64.toLowerCase();
+          var hit = low.indexOf('5718') >= 0 || low.indexOf('616e64726f6964') >= 0;
+          var str = '';
+          try{ str = p.readUtf8String(); }catch(e){}
+          if (hit || (str && str.length > 4 && str.length < 100 && /[a-z]{4,}/i.test(str))) {
+            send({type:'dd', mod:modName, fn:exp.name, h64:h64, str:str});
+          }
+        }
+      });
+      hooked += 1;
+    }catch(e){}
+  });
+  return true;
+}
+
+var tries = 0;
+var iv = setInterval(function(){
+  tries += 1;
+  var ok = hookMod('libhydeviceid.so') | hookMod('libudbauthunify.so');
+  if (tries % 5 === 0) send({type:'waiting', tries:tries, hooked:hooked});
+  if (ok) { clearInterval(iv); send({type:'hooked_count', n:hooked}); }
+  if (tries > 60) clearInterval(iv);
+}, 1000);
+"""
+
+
+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()
+
+    events = []
+
+    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 == "dd":
+            print(f"[dd] {p.get('mod')} {p.get('fn')}: {p.get('h64')} {p.get('str')!r}", flush=True)
+            events.append(p)
+            OUT.write_text(json.dumps(events, indent=1))
+        elif t == "hooked_count":
+            print(f"[*] hooked {p.get('n')} datadiv", flush=True)
+        elif t == "waiting":
+            print(f"[waiting] tries={p.get('tries')} hooked={p.get('hooked')}", flush=True)
+
+    script = session.create_script(JS)
+    script.on("message", on_message)
+    script.load()
+    print("[*] datadiv 重hook中 (每1s重试), 请触发登录 (命中即持久化)", flush=True)
+    try:
+        while True:
+            time.sleep(5)
+    except KeyboardInterrupt:
+        pass
+    print(f"[*] 结束, {len(events)} 条 -> {OUT}", flush=True)
+
+
+if __name__ == "__main__":
+    main()