104 lines
3.3 KiB
Python
104 lines
3.3 KiB
Python
#!/usr/bin/env python3
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"""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。
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命中即写入文件(不依赖退出), 打印明文头与密文长度。
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"""
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from __future__ import annotations
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import time
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from pathlib import Path
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import frida
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RE = Path("/Users/yml/codes/Reverse-Engineering-Agent-Universal-v3.0")
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OUT = Path("/Users/yml/codes/douyu_login_py/evidence/dfp_buffer_dump.json")
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JS = r"""
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'use strict';
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Process.setExceptionHandler(function(d){ return true; });
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send({type:'armed'});
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function hex(p, n){
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try{ return Array.from(new Uint8Array(p.readByteArray(n))).map(x=>('0'+x.toString(16)).slice(-2)).join(''); }
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catch(e){ return 'ERR'; }
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}
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function doScan(){
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var found = false;
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try{
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Process.enumerateRanges('r--').forEach(function(r){
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if (r.size > 1024*1024*256) return;
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try{
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var m = Memory.scanSync(r.base, r.size, '57 18 82 cf 66 4b b3 94');
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m.forEach(function(x){
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var addr = x.address;
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// 只 dump 每个 4KB 页内第一个命中 (去重)
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var pre256 = hex(addr.sub(64), 64);
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var post = hex(addr.add(10), 4096);
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send({type:'dump', addr:String(addr), pre:pre256, post:post});
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found = true;
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});
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}catch(e){}
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});
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}catch(e){}
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send({type:'tick', found:found});
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}
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var iv = setInterval(function(){ doScan(); }, 3000);
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"""
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def main():
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device = frida.get_device_manager().add_remote_device("127.0.0.1:31877")
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pid = device.spawn(["com.duowan.kiwi"])
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print(f"[*] spawned pid={pid}", flush=True)
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session = device.attach(pid)
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session.create_script(
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(RE / "evidence/scripts/bypass_msaoaid_maps_art_callsite.js").read_text()
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).load()
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session.create_script(
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(RE / "evidence/scripts/mask_frida_maps_only.js").read_text()
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).load()
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device.resume(pid)
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time.sleep(11)
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session.create_script(
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(RE / "evidence/scripts/patch_guard_block_termination.js").read_text()
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).load()
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dumped = []
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def on_message(message, data):
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if message.get("type") == "error":
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print("[JS-ERR]", str(message)[:160], flush=True); return
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if message.get("type") != "send":
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return
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p = message.get("payload") or {}
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t = p.get("type")
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if t == "dump":
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addr = p.get("addr")
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# 去重 (同地址不重复存)
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if any(d.get("addr") == addr for d in dumped):
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return
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rec = {"addr": addr, "pre": p.get("pre"), "post": p.get("post")}
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dumped.append(rec)
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# 立即持久化
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OUT.write_text(__import__("json").dumps(dumped, indent=1))
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print(f"[DUMP] @{addr} pre={p.get('pre','')[:64]} postlen={len(p.get('post',''))//2} saved={len(dumped)}", flush=True)
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elif t == "tick":
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print(f"[tick] found={p.get('found')} total_dumps={len(dumped)}", flush=True)
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script = session.create_script(JS)
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script.on("message", on_message)
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script.load()
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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)
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try:
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while True:
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time.sleep(5)
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except KeyboardInterrupt:
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pass
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print(f"[*] 结束, 共 {len(dumped)} 个 dump -> {OUT}", flush=True)
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if __name__ == "__main__":
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main()
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