这种UE加密文件有解密的方法吗？

Question

这种UE加密文件有解密的方法吗？让它恢复加密前的格式

这种触及知识盲区了，不知道该怎样尝试

Answer 1

你还要知道密钥，带密钥的加密，很难破解

看这个代码

let a = 1;
let b = 2;

console.log(a + b);

加密过后

const _0xf15c04 = _0x187e;
(function (_0x396a13, _0x5ad26c) {
  const _0x28d0c2 = _0x187e,
    _0x5a47c5 = _0x396a13();
  while (!![]) {
    try {
      const _0x2f552b =
        parseInt(_0x28d0c2(0x1ad)) / 0x1 +
        (-parseInt(_0x28d0c2(0x1a5)) / 0x2) *
          (parseInt(_0x28d0c2(0x1a2)) / 0x3) +
        -parseInt(_0x28d0c2(0x1aa)) / 0x4 +
        -parseInt(_0x28d0c2(0x1af)) / 0x5 +
        parseInt(_0x28d0c2(0x1a9)) / 0x6 +
        -parseInt(_0x28d0c2(0x1a6)) / 0x7 +
        (-parseInt(_0x28d0c2(0x1ac)) / 0x8) *
          (-parseInt(_0x28d0c2(0x1a3)) / 0x9);
      if (_0x2f552b === _0x5ad26c) break;
      else _0x5a47c5['push'](_0x5a47c5['shift']());
    } catch (_0x105ff3) {
      _0x5a47c5['push'](_0x5a47c5['shift']());
    }
  }
})(_0x9158, 0xaab2b);
const _0xfb2da3 = (function () {
    let _0x15a21a = !![];
    return function (_0x302b0c, _0x2137c2) {
      const _0x15f07e = _0x15a21a
        ? function () {
            if (_0x2137c2) {
              const _0x4441b7 = _0x2137c2['apply'](_0x302b0c, arguments);
              return (_0x2137c2 = null), _0x4441b7;
            }
          }
        : function () {};
      return (_0x15a21a = ![]), _0x15f07e;
    };
  })(),
  _0x1eb508 = _0xfb2da3(this, function () {
    const _0x2b4d0e = _0x187e;
    return _0x1eb508[_0x2b4d0e(0x1ae)]()
      [_0x2b4d0e(0x1a8)](_0x2b4d0e(0x1a7))
      [_0x2b4d0e(0x1ae)]()
      [_0x2b4d0e(0x1ab)](_0x1eb508)
      ['search'](_0x2b4d0e(0x1a7));
  });
function _0x187e(_0x14704a, _0x1028c8) {
  const _0xd77a5a = _0x9158();
  return (
    (_0x187e = function (_0x1eb508, _0xfb2da3) {
      _0x1eb508 = _0x1eb508 - 0x1a2;
      let _0x915831 = _0xd77a5a[_0x1eb508];
      return _0x915831;
    }),
    _0x187e(_0x14704a, _0x1028c8)
  );
}
_0x1eb508();
let a = 0x1,
  b = 0x2;
console[_0xf15c04(0x1a4)](a + b);
function _0x9158() {
  const _0x51cf10 = [
    'log',
    '40270otQfWW',
    '7613935CJdSHe',
    '(((.+)+)+)+$',
    'search',
    '3769260eAQSJE',
    '1788176teHVhY',
    'constructor',
    '31237352YDnhXX',
    '99314RJjfze',
    'toString',
    '5850150CLcteH',
    '183hKyBuy',
    '9MSrNQx',
  ];
  _0x9158 = function () {
    return _0x51cf10;
  };
  return _0x9158();
}

加密的过程

let secretKey = Number((((Math.random() * 100) / 100).toFixed(2)));
let htmlmin = require('gulp-html-minifier-terser');
let gulp = require('gulp');
let gulpJavaScriptObfuscator = require('gulp-javascript-obfuscator');
let cleanCSS = require('gulp-clean-css');
let sourcemaps = require('gulp-sourcemaps');

gulp.task('one', function (cb) {
  gulp.src('tools' + '/**/*.js')
    .pipe(gulpJavaScriptObfuscator({
      compact: true,
      selfDefending: true,
      // Type: number Default: 0.75 Min: 0 Max: 1
      controlFlowFlatteningThreshold: secretKey, //不同密钥加密结果不一样
      deadCodeInjectionThreshold: 0.7
    }))
    .pipe(gulp.dest('dist'));
  cb();
});

Answer 2

对于这种混淆的代码 你可以自己格式化之后debug进行分析或者尝试使用 JavaScript Deobfuscator 看看