Need some pointers with a .Net target

[DARKER]

First of all you must learn basic .NET opcodes and identify your "jumps" (same as in ASM)

Here is some reference from M$ what opcodes do:

http://msdn.microsoft.com/en-us/library/system.reflection.emit.opcodes_members%28VS.71%29.aspx

but i am sure you can google for better list + HEX numbers ...

Process is the same: identify bad boy, examine offset, change HEX representative to NOP + correct PUSHed and POPed stack if needed

[Sailor_EDA]

Thanks for the pointers!!

Noneforce, this is a addin for Excel so there is no exe. I've attached the dll files that have the code snippets I posted.

The first file ME4XL.dll has calls the functions to check if the license is valid or not. The second file SKCLNET.dll houses the functions which do the checking etc.

My guess is to patch ME4XL.dll. I'll readup on MSIL and try it out and let you know how things go.