Nfc
libnfc
libnfc is the open source Near Field Communication library on Linux. It supports most hardware based on NXP chips (PN53x).
Install:
- Add apt repository
sudo add-apt-repository ppa:jdthood/nfc-tools
- Package is only available for release quantal, so if needed edit apt file /etc/apt/sources.list.d/jdthood-nfc-tools-precise.list
- Install libnfc packages:
sudo apt-get install libnfc-bin libnfc-dev libnfc-examples mfoc
sudo apt-get install libccid pcscd # As per install instruction http://nfc-tools.org/index.php?title=Libnfc
References:
SCL3711
The SCL3711 is a very small smartcard reader from Identive. It contains a PN533 chip from NXP.
The reader works very well with libnfc. To use it on a recent kernel (like Ubuntu Precise) however, you must blacklist the pn533 and nfc modules:
# To make my SCL3711 works:
sudo vi /etc/modprobe.d/blacklist-libnfc.conf # As per http://www.libnfc.org/community/topic/668/solved-scl3711-interface-0-claimed-by-pn533-nfclist-sets-conf/
# Type:
# blacklist pn533
# blacklist nfc
# unplug device
sudo modprobe -r pn533 nfc # Unload the modules
Once detected, you can easily tags in the reader field with:
nfc-list
References:
MIFARE Classic keys
Dump memory
Dump MIFARE Classic memory:
nfc-mfclassic r a test.dump # Read, using A key (no key given, so assuming one in default keyset)
mfoc
mfoc can brute-force MIFARE Classic, if at least one key is known (needed to be able to collect some information leaking from random generator).
- Search for keys, assuming one key in the default keyset (see mfoc source code for a list)
mfoc -O test.dump
More information:
mfcuk
mfcuk may brute a key even if no keys are known. Ideally we use it to guess one key, and then switch back to mfoc.
Best line:
./mfcuk -C -R 0 -v 3 -s 250 -S 250 -o dump.bin # Search sector 0
References: