Heres a link to the files I have used to crack
Nookstudy.
Keep in mind, this skitters the border of illegal as it gets around the rental agreements.
First thing, download the
B&N reader program and Nookstudy.
Run the key retrieval .py and then run the other .py and use the key you got from the first script. Run it on your PDF and done.
Code:
http://www.mediafire.com/file/ex7i0kr1tb868v5/BarnesNobleNookStudy_DRMCracker.zip