0x01 help doc
allen@allen_ubuntu:~$ nfc-mfclassic --help
Usage: nfc-mfclassic f|r|R|w|W a|b u|U<01ab23cd> <dump.mfd> [<keys.mfd> [f]]
f|r|R|w|W - Perform format (f) or read from (r) or unlocked read from (R) or write to (w) or unlocked write to (W) card
*** format will reset all keys to FFFFFFFFFFFF and all data to 00 and all ACLs to default
*** unlocked read does not require authentication and will reveal A and B keys
*** note that unlocked write will attempt to overwrite block 0 including UID
*** unlocking only works with special Mifare 1K cards (Chinese clones)
a|A|b|B - Use A or B keys for action; Halt on errors (a|b) or tolerate errors (A|B)
u|U - Use any (u) uid or supply a uid specifically as U01ab23cd.
<dump.mfd> - MiFare Dump (MFD) used to write (card to MFD) or (MFD to card)
<keys.mfd> - MiFare Dump (MFD) that contain the keys (optional)
f - Force using the keyfile even if UID does not match (optional)
Examples:
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
0x02 trouble
总是对这几个选项不明白，之前有一次写入时使用命令：
nfc-mfclassic W a newdata.mfd mycard.mfd
注意：W大写。
因为该卡不是白卡，这样把卡给写坏了。。还没找到修复的办法。
命令：
nfc-mfclassic f A u dummy.mfd keyfile.mfd f
也无法挽救。
0x03 Right Way
Use
nfc-mfclassic w a u newdata.mfd mycard.mfd
attention:w is down
这样就有以下流程：
- mfoc读取密码
- edit
- 用edit后的file覆盖旧卡，注意使用上面的命令（加上u）
- OK
