Topic: writing to Mifare Ultralight from a script - NFC filament boost
I don't own NFC-enabled android phone, so I can't just install app and move on. Instead I tried to use my old "tikitag" tag reader to overwrite the original tag with old data. ( this is tikitag: https://www.rfidjournal.com/articles/view?4316 )
Using the standard "nfc-mfultralight" you can get first 8 pages:
$ nfc-mfultralight r a.mfd
NFC device: / CCID USB Reader opened
Found MIFARE Ultralight card with UID: 04xxxxxxxxxxxx
Reading 16 pages |........|
Done, 8 of 16 pages readed.Then by feeding it with correct password from nfckey.xyz I can *read* 45 pages:
$ nfc-mfultralight r x.mfc --pw E843xxxx
NFC device: / CCID USB Reader opened
1 ISO14443A passive target(s) found:
04xxxxxxxxxxxx
Using MIFARE Ultralight card with UID: 04xxxxxxxx
NTAG Type: NTAG213 (144 user bytes)
Authing with PWD: e843xxxx Success - PACK: f910
Reading 45 pages |.............................................|
Done, 45 of 45 pages read (0 pages failed).
Writing data to file: x.mfc ... Done.Sadly, this is where my luck run out. I don't think I'm able to overwrite the tag with just stale data:
$ nfc-mfultralight w 73m.mfc --pw 09xxxxxx
NFC device: / CCID USB Reader opened
1 ISO14443A passive target(s) found:
04xxxxxxxxxxxx
Using MIFARE Ultralight card with UID: 04xxxxxxxxxxxx
NTAG Type: NTAG213 (144 user bytes)
Authing with PWD: 90xxxxxx Success - PACK: 0e61
Write OTP/Capability Bytes ? [yN]
Write Lock Bytes (Warning: OTP if set) ? [yN]
Write Dynamic Lock Bytes ? [yN]
Write UID bytes (only for special writeable UID cards) ? [yN]
Writing 45 pages |ssss..ffffffffffffffffffffffffffffffffffsffff|
Done, 2 of 45 pages written (5 pages skipped, 38 pages failed).So I was able to only write 2 pages, which makes me sad. Does anyone have ideas how to use "nfc-tools" or perhaps "RFIDIOt" to perform succcessful write?
