File:Proxmark.pdf

Summary

In todays day and age more and more private businesses and public infrastructure systems rely on NFC. Though it may seem like a fast and secure way of authorisation it poses many obstacles when it comes to the technology itself and the implementation. This paper shows the fundamentals of NFC and describes several weaknesses of NFC Cards like Mifare Classic Cards. But also supposedly safe cards like Mifare Plus S and Mifare DesFire can have severe loopholes in their implementation, which can be used by the attacker. The paper also shows the practical analysis of the authors' (John Ostrowski and Can Arseven) University-NFC System. It outlines several weak points and their practical exploitation in its system.