Obtain permissions that are usually locked at the system level on root devices

Question

I don't know if this is possible, but it seems like it should be. My application uses things that are locked at the last levels of the API, with the exception of applications declaring certain permissions that you cannot get unless you are the main Android system.

I just scratched the surface of the root development, I am looking for advice on what is the best method so that your whole application is considered as a system level for stopping permissions. I was looking for a significant amount for some kind of open source tutorial or project illustrating this goal, but was not successful.