DC-4 is the fourth machine in the DC series on Vulnhub and the third available in OffSec’s Proving Grounds Play. S1ren did a live stream on twitch.tv explaining this machine and the recording is on YouTube. If you are looking for DC3, I will be uploading a post later. Currently I host my target on VMware machines and DC3 was not working well. I plan on switching to virtualbox with a different computer soon.

DC-2 is the second machine in the DC series on Vulnhub. In my DC-1 writeup I mentioned S1ren’s walkthrough streams on Twitch.tv and how the videos are recorded on Youtube. S1ren’s DC-2 walkthrough is in the same playlist. Something new as of creating this writeup is that Offensive Security is now offering some of the DC machines on the Proving Grounds. The Proving Grounds offers a free option for anyone to sign up and get 3 hours per day of access to any machine in their “Play” tier.

S1ren from Offensive Security has taken on the task of regularly streaming Vulnhub machines on Twitch.tv at OffSecOfficial. She is hacking one machine a week from Vulnhub and bringing her viewers along for an interactive experience. Viewers can comment during the stream to suggest things to enumerate, exploit, or take note of as well as ask any questions. I’ve started to attempt the machines each week and record notes as I go.

Full disclosure: I am an Offensive Security employee. This My-CMSMS walkthrough is a summary of what I did and learned. Friends from #misec and I completed this challenge together. No company restricted resources were used. Creating walkthroughs for Proving Grounds (PG) Play machines is allowed for anyone to publish. However, PG Practice machines from the paid tier, are not permitted to have public walkthroughs posted. On June 11th, @InfosecAli and I signed into Proving Grounds and booted up an intermediate PG play machine called My-CMSMS.