Using PN532 to copy NFC Card on MacOS

a PN532 nfc card reader with usb TTL

upload successful

⚠️remember to set switch bits to serial port comm mode on PN532 before connect to USB TTL

install mfoc with brew

brew install mfoc

back up current card

sudo mfoc -O bak.mfd

write card (for a blank card with no block 0)

nfc-mfclassic w a u bak.mfd

write card(attempt to overwrite block 0 including UID)

nfc-mfclassic W a u bak.mfd

Other Examples(for cards with key A):

Read card to file, using key A:

nfc-mfclassic r a u mycard.mfd

Write file to blank card, using key A:

nfc-mfclassic w a u mycard.mfd

Write new data and/or keys to previously written card, using key A:

nfc-mfclassic w a u newdata.mfd mycard.mfd

Format/wipe card (note two passes required to ensure writes for all ACL cases):

nfc-mfclassic f A u dummy.mfd keyfile.mfd f
nfc-mfclassic f B u dummy.mfd keyfile.mfd f

Read card to file, using key A and uid 0x01 0xab 0x23 0xcd:

nfc-mfclassic r a U01ab23cd mycard.mfd

reference