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#1 2021-09-22 00:25:12

DEFCON3187
Contributor
Registered: 2020-11-21
Posts: 2

Urmet Mifare Classic 7 Byte UID

OK. I have an interesting one. I have a urmet plus tag (Mifare Classic 1K 7 Byte UID). I have made an identical clone of this tag using icopy XS and Proxmark3 RDV 4. I compared the original and clone, they are identical, however the reader does not even recognise the card when presented? What am I missing here? Any hints or ideas would be welcome.


[usb] pm3 --> hf search
[|] Searching for ISO14443-A tag...
[+]  UID: 04 9B 5F 42 42 57 80
[+] ATQA: 00 44
[+]  SAK: 08 [2]
[+] MANUFACTURER: NXP Semiconductors Germany
[+] Possible types:
[+]    MIFARE Classic 1K CL2
[=] -------------------------- ATS --------------------------
[=] --> SAK incorrectly claims that card doesn't support RATS <--
[+] ATS: 0C 75 77 80 02 C1 05 21 30 00 77 C1 [ d3 00 ]
[=]      0c...............  TL    length is 12 bytes
[=]         75............  T0    TA1 is present, TB1 is present, TC1 is present, FSCI is 5 (FSC = 64)
[=]            77.........  TA1   different divisors are supported, DR: [2, 4, 8], DS: [2, 4, 8]
[=]               80......  TB1   SFGI = 0 (SFGT = (not needed) 0/fc), FWI = 8 (FWT = 1048576/fc)
[=]                  02...  TC1   NAD is NOT supported, CID is supported

[=] -------------------- Historical bytes --------------------
[=]     C1 05 21 30 00 77 C1
[+]     C1.....................   Mifare or (multiple) virtual cards of various type
[+]        05..................   length is 5 bytes
[+]           2x...............   MIFARE Plus
[+]           x1...............   1 kByte
[+]              x0............   Generation 1
[+]                 x0.........   Only VCSL supported

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#2 2021-10-12 22:20:13

Kosmic
Contributor
Registered: 2020-05-27
Posts: 5

Re: Urmet Mifare Classic 7 Byte UID

Possibly, clone detection on the reader. ICT Readers have this. What Brand or Model is the reader?

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#3 2021-10-13 17:55:48

iceman
Administrator
Registered: 2013-04-25
Posts: 9,468
Website

Re: Urmet Mifare Classic 7 Byte UID

.... you should maybe ask the icopy support?

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