ternary

This tag is based on a old Hackvertor tag I wrote years ago. It does random expressions and obfuscates via ternary operations.

Created by: hackvertor

Installed 1 times

Category: XSS

Created on: Monday, December 9, 2024 at 12:54:50 PM

Updated on: Wednesday, December 11, 2024 at 1:41:02 PM

This is a built in tag

Tag arguments
[]

Code

class ternary {
  constructor() {
    this.operators = [">", "<", "==", "!="];
    this.chars = "abcdefghijklmnopqrstuvwxyz";
  }

  getRandom(min, max) {
    return Math.floor(Math.random() * (max - min)) + min;
  }

  encode(input) {
    const operator = this.operators[this.getRandom(0, this.operators.length)];
    const statement = `${this.getRandom(0, 9)} ${operator} ${this.getRandom(0, 9)}`;
    const randstring = Array.from(
      { length: this.getRandom(0, input.length) },
      () =>
        Math.random() > 0.5
          ? this.chars.charAt(this.getRandom(0, this.chars.length))
          : this.chars
              .charAt(this.getRandom(0, this.chars.length))
              .toUpperCase(),
    ).join("");

    let vector = `${statement} ${eval(statement) ? "? '$vector' : '$randstring'" : "? '$randstring' : '$vector'"}`;
    vector = vector.replace("$randstring", randstring);

    const concatString = Array.from(
      input,
      (char) => `(${vector.replace("$vector", char.replace(/'/g, "\\'"))})`,
    );

    return `eval(${concatString.join("+")})`;
  }
}