Trying to modify an assembly at runtime

[MindSystem]

Hi everybody,

that was a long time that i didn't try to code anything. So sorry if there're stupid mistakes in my code.

I try to have an assembly that modify itself at runtime

For example, all Nop opcode becomes Ret opcode (don't try to find logic )

 

So i inject a method in the .cctor of the assembly. Here's the code :

 

Assembly currentAssembly = Assembly.GetExecutingAssembly();
            Type type = currentAssembly.GetType();
            foreach(MethodInfo method in type.GetMethods())
            {
                RuntimeHelpers.PrepareMethod(method.MethodHandle);
                byte[] iLAsByteArray = method.GetMethodBody().GetILAsByteArray();
                for (int i = 0; i < iLAsByteArray.Length; i++)
                {
                    if ((short)iLAsByteArray == OpCodes.Endfinally.Value)
                    {
                        iLAsByteArray = (byte)OpCodes.Ldarg_0.Value;
                    }
                }
                UpdateILCodes(method, iLAsByteArray, -1);
            }

 

the code is a mess but as i said, i didn't touched a computer for a long time.

 

Thanks for you greatful help

Edited December 26, 2016 by Legend-Modz-V1

[MindSystem]

On 26/12/2016 at 9:10 PM, ilya01 said:

Seems, that are you using injection library. Try to watch source of exaples, how to use it.

But this library is unstable and It does not always work.

i looked on examples for a day but impossible to find solution ;/