Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

spawnrider · 2014-08-12 02:29:17

Hi,

I am facing an issue while retrieving keys on MIFARE Classic 1k (4 Bytes UID).
I just run the MFOC command for many hours (days ?!) but it does not retrieve all my 5 UNKNOWS_KEY

Did you have heard about this issue (https://code.google.com/p/mfoc/issues/detail?id=11)?
I posted the #2 comment on the MFOC issue #11 tracking system.
How to retrieve these keys ?

Here is my card summary :

[== Undefined ==]
ISO/IEC 14443A (106 kbps) target:
    ATQA (SENS_RES): 00  04  
* UID size: single
* bit frame anticollision supported
       UID (NFCID1): 70  3a  06  df  
      SAK (SEL_RES): 08  
* Not compliant with ISO/IEC 14443-4
* Not compliant with ISO/IEC 18092

Fingerprinting based on MIFARE type Identification Procedure:
* MIFARE Classic 1K
* MIFARE Plus (4 Byte UID or 4 Byte RID) 2K, Security level 1
* SmartMX with MIFARE 1K emulation
Other possible matches based on ATQA & SAK values:

Try to authenticate to all sectors with default keys...
Symbols: '.' no key found, '/' A key found, '\' B key found, 'x' both keys found
[Key: ffffffffffff] -> [................]
[Key: a0a1a2a3a4a5] -> [////////////////]
[Key: d3f7d3f7d3f7] -> [////////////////]
[Key: 000000000000] -> [////////////////]
[Key: b0b1b2b3b4b5] -> [x/////xxxxxxxxxx]
[Key: 4d3a99c351dd] -> [x/////xxxxxxxxxx]
[Key: 1a982c7e459a] -> [x/////xxxxxxxxxx]
[Key: aabbccddeeff] -> [x/////xxxxxxxxxx]
[Key: 714c5c886e97] -> [x/////xxxxxxxxxx]
[Key: 587ee5f9350f] -> [x/////xxxxxxxxxx]
[Key: a0478cc39091] -> [x/////xxxxxxxxxx]
[Key: 533cb6c723f6] -> [x/////xxxxxxxxxx]
[Key: 8fd0a4f256e9] -> [x/////xxxxxxxxxx]

If you have any tips for me, I'm stuck on it

spawnrider · 2014-09-02 23:15:35

Up
Nobody can help me ?

iceman · 2014-09-03 03:40:39

questions about running other software like MFOC,/MFUC usually don't get so much attention around here.

If you have an pm3, you could try running the mifare_autopwn lua script that Holiman wrote.
or try the "hf mf nested" command with different inputkeys.

spawnrider · 2014-10-09 00:11:26

Thanks for your response ICeman.
Are you sure that the Proxmark3 can retrieve these keys using hf mf nested at 100%?

iceman · 2014-10-09 05:16:38

There is new cards with different (higher) entrophy in the randonnumbergenerator and those cards you can't get the keys from a PM3. I doubt that you can get it from any normal software but if you find a one please let me know.
If you got a key from mfoc/mfuc and just got stuck in a "nested" situation i.e. got more keys but the 5keys, then my guess is that you can most likely get the rest of the keys with a pm3.
There is no such thing as 100% sure in the pm3 world. sadley.

But from your answer I guess its a money issue of buying a expensive device like a pm3 for only 5 b-keys on one card. I would think twice also.
there is always the alternative to send your card to a member here on the forum and ask them to run some test for you. That would be the cheapest way.

vivat · 2014-10-09 08:29:46

Don't forget that you can sniff communication between your card and valid reader then decrypt it with crapto1.

iceman · 2014-10-09 10:50:50

If you want to, I can check your cards so you don't have to get a pm3 yourself.

iceman · 2014-10-09 13:20:00

mail me at

iceman at iuse se

there we can exchange adresses.

iceman · 2014-10-09 21:16:34

I got your email, you got an answer.

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#1 2014-08-12 02:29:17

Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#2 2014-09-02 23:15:35

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#3 2014-09-03 03:40:39

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#4 2014-10-09 00:11:26

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#5 2014-10-09 05:16:38

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#6 2014-10-09 08:29:46

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#7 2014-10-09 10:50:50

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#8 2014-10-09 13:20:00

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

#9 2014-10-09 21:16:34

Re: Can't retrieve five B keys from my MIFARE Classic UID 4 Bytes

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