TitleAuthorCreatedPublishedTags
Bash Jail 3
  • Jon Marien
January 16, 2025-[[#issessions|#issessions]]

This one took me EVEN LONGER* than the 2nd challenge did. And for good reason, stdout and stderr are being redirected to /dev/null, so nothing is printed to the screen. If we redirect to stdin, though (which is at 0), we can solve the solution and get the flag: This works because we are still allowed to use eval, and stdin was not being redirected to /dev/null.