// R38: 追踪 RC4 key (32hex) 的诞生点 — Java MessageDigest + udb md5 + 0x60e6c 反查副本
'use strict';
function emit(o){ try{ send(o); }catch(e){} }
function hexb(p,n){ try{ return Array.from(new Uint8Array(p.readByteArray(n))).map(b=>('0'+b.toString(16)).slice(-2)).join(''); }catch(e){ return ''; } }
var nEvents = 0;

// ---- 1) Java MessageDigest 全量 (md5/sha1) ----
setImmediate(function(){
  Java.perform(function(){
    try {
      var MD = Java.use('java.security.MessageDigest');
      MD.digest.overload().implementation = function(){
        var algo = this.getAlgorithm();
        var out = this.digest();
        try {
          var hex = Array.prototype.map.call(out, function(b){ return ('0'+(b&0xff).toString(16)).slice(-2); }).join('');
          nEvents++;
          emit({event:'java-digest', algo: algo, out: hex});
        } catch(e){}
        return out;
      };
      MD.digest.overload('[B').implementation = function(inp){
        var algo = this.getAlgorithm();
        var out = this.digest(inp);
        try {
          var hex = Array.prototype.map.call(out, function(b){ return ('0'+(b&0xff).toString(16)).slice(-2); }).join('');
          var inHex = Array.prototype.map.call(inp, function(b){ return ('0'+(b&0xff).toString(16)).slice(-2); }).join('');
          nEvents++;
          emit({event:'java-digest', algo: algo, out: hex, in_hex: inHex.substring(0,2048)});
        } catch(e){}
        return out;
      };
      emit({event:'java-md5-hooked'});
    } catch(e){ emit({event:'java-e', e:String(e).substring(0,150)}); }
  });
});

// ---- 2) udbauthunify md5 (0x32e71c) 原始参数 ----
function armUdb(){
  var u = Process.findModuleByName('libudbauthunify.so');
  if (!u) return false;
  try {
    Interceptor.attach(u.base.add(0x32e71c), {
      onEnter(args){
        this.a = [];
        for (var i=0;i<4;i++) this.a.push({x:String(args[i]), h:hexb(args[i],96)});
        this.lr = this.returnAddress;
      },
      onLeave(){
        try {
          var outs = [];
          for (var i=0;i<2;i++) outs.push(hexb(this.a[i].x ? ptr(this.a[i].x) : ptr(0), 96));
          nEvents++;
          emit({event:'udb-md5', args:this.a, out_re:outs, lr: String(this.lr)});
        } catch(e){}
      }
    });
    emit({event:'udb-armed'});
    return true;
  } catch(e){ return false; }
}

// ---- 3) 0x60e6c 到位点 + 全内存反查 key 副本 ----
function armHy(){
  var h = Process.findModuleByName('libhydeviceid.so');
  if (!h) return false;
  try {
    Interceptor.attach(h.base.add(0x60e6c), {
      onEnter(args){
        try {
          var s = '';
          try { s = args[1].readCString(64); } catch(e){}
          nEvents++;
          emit({event:'key-site', x1:String(args[1]), key:s});
          if (s && s.length === 32) {
            setTimeout(function(){
              var pat = '';
              for (var i=0;i<16;i++) pat += s.substr(i,2).split('').join('')+' ' ;
              pat = s.substring(0,16).split('').map(function(c){ return ('0'+c.charCodeAt(0).toString(16)).slice(-2); }).join(' ');
              var n=0;
              for (var r of Process.enumerateRanges('rw-')) {
                if (r.size > 96*1024*1024) continue;
                var ms=[];
                try { ms = Memory.scanSync(r.base, r.size, pat); } catch(e){ continue; }
                for (var m of ms){
                  if (n>=10) break;
                  n++;
                  emit({event:'key-copy', addr:String(m.address), src: r.file? r.file.path : String(r.base), around: hexb(m.address.sub(160), 352)});
                }
                if (n>=10) break;
              }
              emit({event:'key-copies-done', n:n});
            }, 50);
          }
        } catch(e){ emit({event:'key-e', e:String(e).substring(0,150)}); }
      }
    });
    // 4) JNI 边界 0x20e924 参数
    Interceptor.attach(h.base.add(0x20e924), {
      onEnter(args){
        if (nEvents > 3000) return;
        var rows=[];
        for (var i=0;i<3;i++) rows.push({x:String(args[i]), h:hexb(args[i],48)});
        nEvents++;
        emit({event:'jni-boundary', args:rows});
      }
    });
    emit({event:'hy-armed'});
    return true;
  } catch(e){ emit({event:'hy-e', e:String(e).substring(0,150)}); return false; }
}

var udb=false, hy=false;
var poll = setInterval(function(){
  if (!udb) udb = armUdb();
  if (!hy) hy = armHy();
  if (udb && hy) clearInterval(poll);
}, 200);

// ---- 5) SSL_write 同轮密文 ----
var done = false;
for (var mod of Process.enumerateModules()){
  var addr = null;
  try { addr = mod.getExportByName('SSL_write'); } catch(e){}
  if (!addr) continue;
  Interceptor.attach(addr, {
    onEnter(args){
      if (done) return;
      try {
        var num = args[2].toInt32();
        if (num < 60 || num > 60000) return;
        var u = new Uint8Array(args[1].readByteArray(num));
        var s = '';
        for (var i=0;i<u.length;i++) s += (u[i]>=32 && u[i]<127) ? String.fromCharCode(u[i]) : '.';
        if (s.indexOf('dfpReport') < 0) return;
        done = true;
        var hex = Array.prototype.map.call(u, function(x){return ('0'+x.toString(16)).slice(-2)}).join('');
        emit({event:'post', num:num, hex:hex});
      } catch(e){}
    }
  });
}
emit({event:'script-loaded'});