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NFC Emulation Not Working Since 0.94.1 #3911

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S4RP1NG0 opened this issue Sep 19, 2024 · 6 comments
Open

NFC Emulation Not Working Since 0.94.1 #3911

S4RP1NG0 opened this issue Sep 19, 2024 · 6 comments
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@S4RP1NG0
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Describe the bug.

Hello. NFC emulation has not been working since version 0.94.1. I updated to the latest versions, formatted it many times, tried software such as unleashed, Xtreme, RogueMaster but the result did not change. My NFC card that I use for the apartment only works in version 0.94.1.

I reintroduce the card, it registers the card without giving any errors but it does not emulate. Does anyone have any ideas?

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NFC Emulation not working since 0.94.1

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@S4RP1NG0
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Card type MIFARE Classic 1K

@YR17
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YR17 commented Sep 21, 2024

Have the same issue on 1.0.1 release. Looks like communication interrupts(MfClassicListener FieldOff event received) after reading block 3(trailer block of 1st sector). The reader is accept card at 93.0.
Flipper expose key A during trailing block reading, but fixing it doesn't help. Card type MIFARE Classic 1K.

@doomwastaken
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Greetings. We would need a little more details on reader / card that you are using. Or proxmark sniff on entire communication between the devices if you have one on hand

@YR17
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YR17 commented Sep 22, 2024

I could not identify reader and unfortunately I don't have proxmark, however I made custom build based on 1.0.1 and add some logs inside nfc library to get part of communication between flipper and reader. Attached the card itself and log.
read_log.txt
card.zip

@YR17
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YR17 commented Sep 22, 2024

Also I tried to log communication between flipper and card. Log attached.
card.log
A lot of messages like
24783 [D][Nfc] FWT Timeout
24785 [T][Nfc] Failed TRX state machine
This communication interrupts after each sector read may be not critical for reading, but for emulation.
I suppose it could be hal related issue.

@YR17
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YR17 commented Sep 22, 2024

These are my changes I gather logs at: YR17@c2993ab

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