Hack The Box is a massive, online cyber security training platform, allowing individuals, companies, universities and all kinds of organizations around the world to level up their hacking skills.
Note: Writeups/Walkthroughs on this blog are published only after the particular box is retired from HackTheBox active machines.
Knife is a fun box which uses a PHP version having backdoor, which leads to RCE. The box has a command named knife which lets non-superusers run commanad as root.
Love is a fun box where we find a hidden subdomain that helps us retrieve Forbidden pages, where admin credentials are leaked of another service. The access to the admin dashboard has a file upload, through which we get a reverse shell. The box then has AlwaysInstallElevated that allows a regular user to install a Microsoft Windows Installer Package (MSI) with system privileges, which helps us get the Administrator access.
Tenet is a fun box where we find a backup of a staging PHP file which loads external code via deserialization, which leads to code-execution and a reverse shell. This leads to access to a script which the non-sudoer user can run to add ssh-key for getting root shell.
Ready is a fun box which is using an outdated GitLab community version. Which apparently has an exploit which gives RCE to authenticated users. This RCE gives access to docker container in which gitlab instance is running, and we have to breakout the container to escalate our privilages to get own root!