CHCon SAM SHUTE - PUTTING A BACKDOOR IN YOUR FRONT DOOR,...

CHCon SAM SHUTE – PUTTING A BACKDOOR IN YOUR FRONT DOOR, https://2019.chcon.nz/talks/sam/

These days everyone has a pocket full of access card that they use to get in and out of buildings. However few people every stop to think about how this technology they use every day works. In this talk Sam will cover the basics of how card based access control systems work, and how for the low cost of $2.50 you can get a copy of everyone’s card in a building.

Got a door-access cardreader? We all know about cloning these cards ...
But only one screw opens up access to the wires going from the reader to the controller. The “Wiegand Interface” is well-documented and unencrypted.
Devices to tap in to this have been expensive and difficult to use, but for ~NZ$10 you can now tap in a bluetooth-enabled wire tapper and signal generator.