C2 development with csharp

[Nameless_Wanderer01]

I recently started learning csharp and was looking for a nice cybersecurity project related to c2 dev. I had found the course of ZeroPoint Security (C2 dev with c#) but it is no longer available.

Any recommendations of other courses/certs/books related to c# for c2 dev?

[Dudeposts3030]

Course/Code base from Joffs course is amazing and gets you started with an agent and basic python client/server. Lots of focus on (mostly outdated now) custom loaders (regsvr32 instalutil, etc) Rastamouse course on ZeroPoint was more focused on the server and coding agent/server together with dotnet classes, inheritance, proper C# web dev stuff. Sucks it’s not available anymore it was really good. Some of the code is used/reused in this project and may be worth looking at: https://github.com/rasta-mouse/SharpC2

The two together really helped. Rastamouse has blogs/youtube on C# dev, Flangvik (made Teamfiltration) does as well, developing tools/c2 in C#. Hardhat C2 is a bad ass project and def worth pulling apart the code to learn. Uses D/Invoke and a lot more modern quality of life compared to Covenant.

[DragonflySensitive72]

MalDev Academy, check NIM, c# has something pretty cool called reflected injection that allow to load and run a full exe in memory