setuid

TryHackMe: Kenobi

Kenobi involves accessing an open Samba share and abusing a vulnerable version of ProFtpd to get a foothold on the machine, and then abusing a SUID binary to elevate privileges to root.

TryHackMe: Annie

This machine involved compromising a vulnerable AnyDesk installation and then abusing an uncommon SetUID binary to elevate privileges to root.