A technical walkthrough documenting my approach to solving the Kioptrix Level 4 vulnerable machine in a controlled lab environment.
Kioptrix Level 4 doesn't hinge on one dramatic exploit the way earlier levels do. Instead it chains together several smaller access-control and input-validation failures: a login form that reacts to SQL injection but doesn't fully cave to it, a directory listing that leaks application source, a parameter that discloses another user's password outright, a restricted shell around SSH access, and a MySQL UDF that turns a database login into root.
This write-up follows that chain end to end, including the dead end that came before the actual way in.
Component Description
Attacker Machine Kali Linux
