C# implementation of the classic "GetSystem" using WIN32 function ImpersonateNamedPipeClient.

This code runs both a service and the console.

The console is responsible for installing itself as a system service, creating a Named Pipe server using CreateNamedPipe() and waiting for the service to connect using CreateFile() with the "SECURITY_SQOS_PRESENT | SECURITY_IMPERSONATION" flags. With the incoming connection, the ImpersonateNamedPipeClient() function is executed, enabling the impersonation process. The execution of a new process is performed with DuplicateTokenEx() that duplicates the token and the use of the CreateProcessWithTokenW() function that allows us to spawn a new process with the duplicated token.