Proxmark3 community

miguegold

Contributor

Registered: 2011-08-05

Posts: 12

Duration of darkside attack

Hi there!

Is there any benchmark of how long does it take to crack a mifare classic with the darkside implementation? Or how long does it take for you when you run the attack? I know that some have left their proxmarks attacking for a day and that's way too much, but how long is a reasonable time?

Thanks!
Miguel

rule

Member

Registered: 2008-05-21

Posts: 417

Re: Duration of darkside attack

With optimized software, between 1 to 5 minutes.

miguegold

Contributor

Registered: 2011-08-05

Posts: 12

Re: Duration of darkside attack

With optimized software, between 1 to 5 minutes.

What do you mean with "optimized software"? Is it included in the current SVN revision?
Thanks!

rule

Member

Registered: 2008-05-21

Posts: 417

Re: Duration of darkside attack

I don't think so, I've seen variations around that were even more optimized. Most ways to do this are publicly know and published years ago, but not all are included in the SVN. For more information check out the scientific articles on this topic

miguegold

Contributor

Registered: 2011-08-05

Posts: 12

Re: Duration of darkside attack

Yes, I've verified the papers, but they say that the attack could hypothetically be installed in less than a minute, but I've never seen that working in such a short time. With current svn version, which is the average time to crack a card?

vivat

Contributor

Registered: 2010-10-26

Posts: 332

Re: Duration of darkside attack

With optimized software, between 1 to 5 minutes.

What do you mean with "optimized software"? Is it included in the current SVN revision?
Thanks!

Is it an implicit advertising of projects near libnfc like nfc-tools, mfcuk, etc?

miguegold

Contributor

Registered: 2011-08-05

Posts: 12

Re: Duration of darkside attack

Is it an implicit advertising of projects near libnfc like nfc-tools, mfcuk, etc?

Nop, I just want to know how long it really takes a regular for a proxmark to crack a card, with current firmware and software.

rule

Member

Registered: 2008-05-21

Posts: 417

Re: Duration of darkside attack

To be precise, it all depends on the card. There are older MIFARE Classic cards from NXP where the nonce is better predictable than in the newer once. Furthermore, there are cards manufactured by Infineon, where the MIFARE Classic random numbers are even less random than those from NXP. For a card where a random can be pinned stable on producing the same one over and over, it all just takes around a few seconds. But with just a few "missers" you easily scale up to a few minutes. It all depends on the setup and the cards. But I think it is safe to say that you can get the key from a regular (older) oyster card with a proxmark in around 3 minutes.

Note: If you want to verify, make sure you have a (13v+ antenna) and play around with distance between the card and antenna. It could help if you just put a boring (read thick) book in between

my_fair_cats_sick

Contributor

Registered: 2016-03-15

Posts: 81

Re: Duration of darkside attack

so what if the darkside attack never returns?  This ran for about 3 hours with no result.

pm3 --> hf mf mifare
-------------------------------------------------------------------------
Executing darkside attack. Expected execution time: 25sec on average :-)
Press button on the proxmark3 device to abort both proxmark3 and client.
-------------------------------------------------------------------------
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................