Introduction In this writeup we are going to check out a machine available on the offsec playgrounds. The idea here was to learn how to use curl and upload files that would ultimately help us into getting an initial foothold into the machine and then use the old tar wildcard to escalate our privileges. Let’s learn. Nmap sudo nmap -T4 -sVC 192.168.241.249 -oN nmap.txt -vv PORT STATE SERVICE REASON VERSION 21/tcp open ftp syn-ack ttl 61 vsftpd 3.