This tutorial guides users through exploiting an anonymous FTP leak to access a hidden web admin login on the Crocodile box on Hack The Box to retrieve a flag. The steps include enumerating FTP, extracting valid credentials, using Gobuster to find hidden web pages, authenticating to a PHP login panel, and capturing the flag. Prerequisites include Kali Linux (or similar distro with necessary tools) and a HTB VPN connection. The tutorial emphasizes the importance of combining leaked credentials with web enumeration for successful exploits and suggests automating processes with scripts in professional engagements.