Funhxx17.zip -

This machine focuses on insecure file handling and exploitation of automated scripts. The FUNHXX17.zip file is the central piece of the initial exploitation phase.

If the zip contained a , you simply navigate to the location where the script was extracted to trigger a connection back to your listener ( nc -lvnp 4444 ). 4. Privilege Escalation

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. FUNHXX17.zip

If you used a symlink, you can now read the linked file through the web server.

After gaining a shell as a low-privileged user (often www-data or tom ): Check for binaries that can be run as root. This machine focuses on insecure file handling and

Look for writable scripts in /etc/crontab that are executed by root.

Because the unzipping process often runs with high privileges (or as a user with write access to the webroot), you can create a malicious zip file containing a symbolic link . Upload it back to the server

FUNHXX17.zip is a target file associated with the (sometimes referred to as Funbox 11 or UnderTheGround) Capture The Flag (CTF) machine, available on platforms like Vulnhub and OffSec's Proving Grounds. Write-up: Funbox UnderTheGround (FUNHXX17.zip)