AntiDeobfuscationJavascriptPreparationScrypt

AntiDeobfuscationJavascriptPreparationScrypt.js

"use strict";  

var _ = require("underscore");

function keyCharAt(key, i) {
    return key.charCodeAt( Math.floor(i % key.length) );
  }

  function xor_encrypt(key, data) {
    return _.map(data, function(c, i) {
      return c.charCodeAt(0) ^ keyCharAt(key, i);
    });
  }

  function xor_decrypt(key, data) {
    return _.map(data, function(c, i) {
      return String.fromCharCode( c ^ keyCharAt(key, i) );
    }).join("");
  }

var final_payload = "console.log('Malicious Content Triggers Here !')";
var k_final = "cow001";
var encrypted_final = xor_encrypt(k_final,final_payload);
var decrypted_final = xor_decrypt(k_final, encrypted_final);
console.log(encrypted_final.toString());
console.log(decrypted_final);

var _1_payload = "cow001();";
var k_1 = "pyth001";
var encrypted_1 = xor_encrypt(k_1,_1_payload);
var decrypted_1 = xor_decrypt(k_1, encrypted_1);
console.log(encrypted_1.toString());
console.log(decrypted_1);