Level 10 - Simple C sharp Reverse

Challenge: http://suninatas.com/challenge/web10/web10.asp

Level_10_-_Rev.png

Download

It's another exe, but written in C#

└─$ file reversing.exe
reversing.exe: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections

C# is the easier to decompile with dnSpy or ILSpy

Level_10_-_Rev-1.png

Flag: Did U use the Peid?