Result: carlos is a valid account.
If you want a persistent root shell instead of just dumping the flag: enzai__x
(If the platform uses a different flag format, replace accordingly.) Result: carlos is a valid account
PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0) 80/tcp open http Apache httpd 2.4.29 ((Ubuntu)) 3306/tcp open mysql MySQL 5.7.31-0ubuntu0.18.04.1 enzai__x
whoami # www-data