binary-obfuscator.ts

class Generator {
  constructor(
    readonly zero: string,
    readonly one: string,
    readonly separator: string
  ) {}

  encode(data: string) {
    return data
      .split('')
      .map(char => '00'.concat(char.charCodeAt(0).toString(2)).slice(-8))
      .join(this.separator)
      .split('0')
      .join(this.zero)
      .split('1')
      .join(this.one)
  }

  decode(data: string) {
    return String.fromCharCode(
      ...(data
        .split(this.zero)
        .join('0')
        .split(this.one)
        .join('1')
        .split(this.separator)
        .map(b => '0b' + b) as any)
    )
  }

  payload(payload: string | Function) {
    const data = typeof payload === 'function' ? `(${payload})()` : payload

    return `setTimeout(String.fromCharCode(...'${this.encode(data)}'.replace(/${
      this.zero
    }|${this.one}/g,B=>+('${this.one}'==B)).split\`${
      this.separator
    }\`.map(b=>'0b'+b)))`
  }
}

;(window as any).generator = new Generator('\u200B', '\u200C', '\u200D')

generator.payload(() => console.log('works')) // setTimeout(String.fromCharCode(...'​​‌​‌​​​‍​​‌​‌​​​‍​​‌​‌​​‌‍​​‌​​​​​‍​​‌‌‌‌​‌‍​​‌‌‌‌‌​‍​​‌​​​​​‍​‌‌​​​‌‌‍​‌‌​‌‌‌‌‍​‌‌​‌‌‌​‍​‌‌‌​​‌‌‍​‌‌​‌‌‌‌‍​‌‌​‌‌​​‍​‌‌​​‌​‌‍​​‌​‌‌‌​‍​‌‌​‌‌​​‍​‌‌​‌‌‌‌‍​‌‌​​‌‌‌‍​​‌​‌​​​‍​​‌​​‌‌‌‍​‌‌‌​‌‌‌‍​‌‌​‌‌‌‌‍​‌‌‌​​‌​‍​‌‌​‌​‌‌‍​‌‌‌​​‌‌‍​​‌​​‌‌‌‍​​‌​‌​​‌‍​​‌​‌​​‌‍​​‌​‌​​​‍​​‌​‌​​‌'.replace(/​|‌/g,B=>+('‌'==B)).split`‍`.map(b=>'0b'+b)))