How to patch .NET DLLs?

[SystemeD]

Originally Posted by newbie_cracker

I patched byte you've shown and sent patched DLL to my friend to test it.
This time .NET compiler said : "Invalid program" (or something like this).
May its because of joining your method and method of patching 80 at offset 102C.

It's exactly what you have to do. I checked it again and it works. Be carefully because the code I posted may be different from yours (you have to look at the position of the bytes), because I downloaded the latest version of the app for testing.

Originally Posted by newbie_cracker

Tonight, I played with a simple file compiled with and without Strong Name. I noticed after compiling with KEY, 80 A0 and PublicKey are the major differences between two files. So my suggestion is : Patching whole PublicKey and 2 bytes before it to 00.

Probably it would work too, I didn't try it...

Originally Posted by newbie_cracker

Present version of ILDASM (.NET SDK 1.1) crashes at decompiling time and the produced file is uncompilable. Do you decompile and recompile the mentioned dll successfully?

In my previous post I talked about future versions, try ILDASM from SDK 2.0 Beta...

PS: I suggest you to patch only the strong name infos at first. Test if the assembly works and after apply all other cracking patches.