Challenge
We were provided with this info
https://77.87.243.155
username: alpha
password: 900d1uck734m41ph4

and we will use it to login to the web kalIbox that we will use to solve the machine
Writeup
I had a little idea that they have the machine on the same box so Ichecked the hosts to know the ip
cat /etc/hosts

yup I was right the ip was there 192.168.204.3 funbox11
let’s scan it using nmap
I used this command
nmap -v -T4 -sC -sV -p- 192.168.204.3
there was a running service that caught my eye

and that was it Iuse metasploit to search for this service
serch ProFTPD

I tried the last 2 payloads and only number 5 worked
use 5
then Iwanted to see the payloads
by using show payloads

I used the reverse one set payload 3

also I set the RHOST , LHOST and the LPORT

then I used show options to check if every thing was rigth

okay let’s start the attack by using run

it worked let’s use whoami to know the user that Ihave
that’s it I was root so let’s find the flag
as alwys it was /root/root.txt
just by sending
cd /root
cat root.txt
I got the flag

And pingo… that was it