Mifare ultralight

[ph553]

Hello I was testing the mf ultralight emulation, The card is correctly detected on my android phone, with the right data but when i test it on the reader that the card i copied is used on, the reader doesn't detect it. I set the green led on "field detected" and it lights up. Also, if i try to upload data to the card from a bin on the iceman GUI, it fills it with dummy data (00000000 or ffffffffff) and the uid changes to 0000000. I have to use teraterm to upload a dump correctly. I was wondering if the first issue is maybe a timings problem? And if the second one is related to the first? Maybe i am missing a setting?

[geo-rg]

Hi @ph553 your problem with uploading a dump seems to me like a problem with the iceman GUI (@iceman1001 can you say something about this?), since it works properly with teraterm.

For the other problem, you could set ledred=codec_rx, which would indicate whether data is sent via NFC. Additionally, you could enable the log with logmode=memory and afterwards download the log with logdownload. However, if you have a RevE rebooted Chameleon, I cannot help you here, since we can only give you support for the RevG Chameleon by Kasper & Oswald.

[iceman1001]

If you have a RevE rebooted the question is better asked here ( https://github.com/iceman1001/ChameleonMini-rebooted ) or if its a GUI thing, here ( https://github.com/iceman1001/ChameleonMini-rebootedGUI )

When you open an issue, do please link your dump file and some screenshots. It will help out in the debugging process

[ph553]

Hi First of all thanks for your answer I have both of the chameleons, however for this problem i am talking about the rev G I will change the led setting and the logmode and keep you updated

[iceman1001]

cool, since you do have both devices, start a thread in GUI repo. It would be great to have someone with a RevG doing some tests :)

[ph553]

Alright, will do, let me just get home so i can post a proper issue with screenshots and all :)

[ph553]

log.txt @geo-rg Here is the log file, the codex RX light was flashing about twice per second

[iceman1001]

For the GUI part, there has been a patch pushed. The upload function didn't correctly detect if a dumpfile had a header field or not for MFU/NTAG in filetypes like BIN/EML ....

The rest of this issue is yours @geo-rg :)

[ph553]

@iceman1001 did you push it right now? If yes, that's impressive thanks

[iceman1001]

yes, its pushed. Test and report back in GUI issue https://github.com/iceman1001/ChameleonMini-rebootedGUI/issues/100

[ph553]

Okay, I will test tonight!

[ph553]

@geo-rg it looks like in my log, the card data is not sent correctly to the reader, correctly if i'm wrong though, i am kind of new to reading ultralight data

[geo-rg]

Hi @ph553 the MF Ultralight emulation works as expected. On 10836 ms (and on other occasions), the reader requests a read on page address 0x11, but a MF Ultralight only has 16 pages (maximum page address 0x0F). I suspect that your reader expects a MF Ultralight EV1 or MF Ultralight C which have a bigger memory. You could simply use a MF Ultralight EV1 config on the Chameleon.

[ph553]

Hey @geo-rg I just finished testing it and it worked! Hooray! On the revG, emulation works on any reader, while on the rev E rebooted, emulation was only working on some readers. Thank you for the help, however i noticed another issue with the "readonly" function, but i will be closing this issue and opening another one in order to keep it clean. Thanks