After completing my OSCP, I decided to attack the pro lab offering from Hack The Box. I did it a bit on a whim but am glad I did!
The lab is built and administered by RastaMouse, but is hosted on the HTB platform. The lab consists of an up to date Domain / Active Directory environment. the targets are 2016 Server, and Windows 10 with various levels of end point protection. The lab also features segregated networks that will require you to carefully route through the network to achieve different goals.
The ultimate goal is to achieve perimeter level access into the network, work your way through the network, and ultimately hack your way into Domain Admin. There are flags to obtain along the way.
The lab will challenge you to learn new techniques, learn tools you may not be used to using, and to learn how to think more like a red team member.
This lab provides MANY MANY learning opportunities, and can be bought one month at a time. In my experience, I was able to fully hack the environment with a 1 month ticket (aside from the ROP challenge ....)
I'd highly recommend this lab for those that would like to attack a more modern network!
https://www.hackthebox.eu/press/view/1