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• import VMProtectSDK64.dll into the c# project (example below)
• writing a wrapper dll to call VMProtect functions in C++

[DllImport("VMProtectSDK64.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int VMProtectGetOfflineActivationString(
    string code,
    [Out, MarshalAs(UnmanagedType.LPStr)] StringBuilder buffer,
    ref int bufferSize);
    
public static void Main(string[] args)
{
    int bufferSize = 1024;
    StringBuilder stringBuilder = new StringBuilder(bufferSize);
    
    int res = VMProtectGetOfflineActivationString(code, stringBuilder, ref bufferSize);
    if (res == 0)
    {
        Console.WriteLine(stringBuilder.ToString());
    }
}

We have tried using VMProtect.SDK but the functions in the SDK always fails.

So far we have attempted the following:

• import VMProtectSDK64.dll into the c# project (example below)
• writing a wrapper dll to call VMProtect functions in C++

Could you provide more detailed information about this problem?

Compile the program without the debug information, but in the linker settings we enable creating of the MAP-file – we will need it to work with VMProtect. After we run the program, we should see the following text:

Compile the program without the debug information, but in the linker settings we enable creating of the MAP-file