Ligma

  • Difficulty is Easy.
  • Pop an alert(1337) on sandbox.pwnfunction.com.
  • No user interaction.
  • Cannot use https://sandbox.pwnfunction.com/?html=&js=&css=.
  • Tested on Chrome.
/* Challenge */
balls = (new URL(location).searchParams.get('balls') || "Ninja has Ligma")
balls = balls.replace(/[A-Za-z0-9]/g, '')
eval(balls)