mifare-classic-clone

Instructions on how to clone mifare classic 1k cards

This instruction give a brief description on how to clone mifare classic using libnfc and external usb nfc card reader ACR122U on MacOS (Ventura on M1 silicon as of this writing, but I have done this before for intel chip in older MacOS)

Preparation

You need to self compile libnfc and mfoc but the dependencies can be installed via homebrew

compile and install libnfc

brew install `libusb`

git clone https://github.com/nfc-tools/libnfc.git
cd libnfc
autoreconf -iv
./configure --with-drivers=acr122_pcsc
make && make install

compile and install mfoc

git clone https://github.com/nfc-tools/mfoc.git
cd mfoc
autoreconf -is
./configure
make && make install

*replace make install with sudo make install if necessary (e.g make && sudo make install)

Clone

Make sure you have blank writable mifare classic cards also knowns as chinese magic cards or magic cards

Dump a copy of the original card you want to clone using the following command

mfoc -P 500 -O original.dmp

then dump a copy of your magic card

mfoc -P 500 -O blank.dmp

then place your magic card on the nfc reader and the following command will write to the magic card. Note that the command is case sensitive

nfc-mfclassic W a blank.dmp original.dmp

or

nfc-mfclassic W b blank.dmp original.dmp

References

nfc-tools/libnfc#330 https://manpages.org/nfc-mfclassic https://gist.github.com/alphazo/3303282