Whenever I see publically accessible GUI boxes, I always attempt to “UI fuzz” them by trying every clever trick. This article does a good job of enumerating ones on Windows. I’ve seen a Linux based one too - it depends on the toolkit, but Qt (especially w/ KDE) is the easiest to break into a file manager, and then into a terminal.
Ctrl-F for “MSPAINT” for a novel approach.
Whenever I see publically accessible GUI boxes, I always attempt to “UI fuzz” them by trying every clever trick. This article does a good job of enumerating ones on Windows. I’ve seen a Linux based one too - it depends on the toolkit, but Qt (especially w/ KDE) is the easiest to break into a file manager, and then into a terminal.