Proxmark3 vs Kantech ioProx

Earlier today we released a patch into the Proxmark3 community for initial support of the LF 125kHz ioProx tags from Kantech.  Current operations are FSK-demodulation and card/tag cloning. Not much is revealed about this type of tag, and only limited data can be found on its data sheet.  Kantech state that readers/cards are compatible with standard 26-bit Wiegand and Kantech Extended Secure Format (XSF). But it is difficult to find…

Proxmark3 RFID Hacking / Research | Access Control Part 3

Introduction Or rather miniature guns, that pack a powerful punch… Our previous posting on Access Control Part 2: Mifare Attacks, we demonstrated a weakness in some Mifare implementations. Our previous attack relied on the use of a single default key, and using the nested attack to eventually recover all keys for the card.  Additionally, we used a rather cheap and affordable ACR-122U reader that costs approximately $40(USD), and the attack process…

Proxmark3 Client Compilation on OSX 10.7+

Recently, I tried to compile the proxmark3 client on OSX using the most recent codebase from the SVN (r756).  I was plagued by errors, regarding the use of QT and missing frameworks.  Consensus on the forums was to strip the QT libraries from the Makefile, and recompile. But the client object files hook a lot of graphical calls useful for researching tag modulation.  Stripping QT is just not an acceptable…