Awesome

StackYenoDeobfuscator

String decryptor relying on the stack. Made for teaching

What is the stack

See articles above : https://docs.microsoft.com/en-us/dotnet/api/system.collections.stack?view=netcore-3.1 https://www.tutorialsteacher.com/csharp/csharp-stack

Why decrypting string using the stack?

It's more reliable than checking series of instructions as argument can be initialized before the call

Is it only possible for string?

Absolutely not, you can calculate the int of a switch or calculating math operation for example