First thing to do is to check the
release index and see if there is anything you want to leech.
After that you download the source and open it in visual studio.
Then, you search for the code definition ( __APP_TELEPORTER for example ) by clicking Ctrl+F and "Find All".
The next thing you gonna have to do is to see and understand where and how the system is implanted and copy it very carfully, You can also use compare softwares such as WinMerge , beyond compare and etc to understand better.
I guess it's your first time doing this so don't be afraid of trial and error because this is the way to learn.
Good luck :) .