Running nmap reveals open ports, typically 21 (FTP) , 22 (SSH) , and 80 (HTTP) .

Some versions of this challenge require you to crack the password of FUNHXX17.zip using fcrackzip or john with the rockyou.txt wordlist. The password is often found to be "p@ssword" or similar simple variations. 3. Initial Access Once unzipped by the system:

After gaining a shell as a low-privileged user (often www-data or tom ): Check for binaries that can be run as root.

Create a symlink to a sensitive file (like /root/root.txt or /etc/shadow ) or a directory. Compress the symlink using the --symlinks flag in zip . Upload it back to the server.

The core "trick" of this machine involves how the system handles this specific zip file.