Robuta

https://www.malwarebytes.com/blog/news/2017/10/using-ilspy-to-analyze-a-small-adware-file
Jan 13, 2026 - ILSpy is an open-source .NET assembly browser and decompiler. We demonstrate its use looking at a simple adware file.
usingilspyanalyzesmalladware
https://www.hanselman.com/blog/whats-better-than-ildasm-ilspy-and-dnspy-are-tools-to-decompile-net-code
.NET code (C#, VB, F#, etc) compiles (for the most part) into Intermediate ...
betterildasmilspydnspy