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