Proxmark3 community

virgilio1100

Contributor

Registered: 2020-07-27

Posts: 4

Capturing key from a known key without success, in a MIFARE CLASSIC 1K

Hello everyone on the forum, I am new here, looking for information.
I have tried to capture the keys to access a MIFARE CLASSIC 1K card. from

a known key, but no matter how hard I try I can't capture others.
the characteristic of the card is:

NUID: 4
Type A (ISO / EC 14443 tYPE A)
Mifare Classic 1k.NXP
ATQA: 0004
SAK: 08

I have used the CHAMELEONMINI REV.E first, I have captured one (key A of sector 9),
then with (MfocGUI_v29 windowsXP) and ACR122U reader I introduce the sector key 9,
he starts searching but finds nothing after a long time.
The procedure I think is correct but cannot find any key.
I have also used (mfoc.exe -k -O card.dump, msdos) and also cannot find keys.

I don't know if it's a software or hardware problem, or something I'm not doing correctly, no

I get it...
Is there another procedure? that serves to extract the keys from a key A
known?

My congratulations on the forum.
Thank you so much for everything.

iceman

Administrator

Registered: 2013-04-25

Posts: 9,537

Website

Re: Capturing key from a known key without success, in a MIFARE CLASSIC 1K

You do know that you are posting in a dedicated Proxmark3 forum?

Because if you were using a Proxmark3 you wouldn't have this issue...  )

virgilio1100

Contributor

Registered: 2020-07-27

Posts: 4

Re: Capturing key from a known key without success, in a MIFARE CLASSIC 1K

Hello, thanks for answering me.
Yes I know, well I have read some things, but I am not clear.
I will buy a Proxmark, if you advise me, which one? Well, I have seen that there are several versions and money prices, which one do you recommend?
On the other hand, it is certain that with the Proxmark I will not have this problem? But for the software or the hardware that it brings?
Well, I have a chameleon that captures the key, but when I do what I say, I can't extract more keys.

Thank you very much for your reply and for the good information you give here for your study.

virgilio1100

Contributor

Registered: 2020-07-27

Posts: 4

Re: Capturing key from a known key without success, in a MIFARE CLASSIC 1K

If you have the card the corrected RNDG I do not know if you can with Proxmark.
I have looked in the forum but I do not see clear solutions....
What do you think ?
Thank you.

Last edited by virgilio1100 (2020-07-28 12:04:00)

Key master

Contributor

From: Moscow

Registered: 2020-01-08

Posts: 18

Re: Capturing key from a known key without success, in a MIFARE CLASSIC 1K

You do know that you are posting in a dedicated Proxmark3 forum?

Because if you were using a Proxmark3 you wouldn't have this issue...  )

Hello Iceman please don't be hard on this guy))) this guy has the same mistake as me. the latest chameleon firmware comes with a bug in the code. I don't know for sure, but according to my assumption, there is an error in the algorithm Crypto-1. or a mistake in your GUI.

When I press the button mfkey32 (chameleon mini GUI  Iceman Edition)

I am getting the wrong key. It means that either the data is transmitted by mistake or the calculation of the key is incorrect.
I described this situation in this post

http://www.proxmark.org/forum/viewtopic.php?pid=39642#p39642

Iceman I ask you to make it possible to write and receive logs in "Chameleon Mini GUI  Iceman Edition" or make this mode of USE with logging.
because now today mfkey32 give me wrong key. Iceman please help)))