Proxmark3 community

iceman

Administrator

Registered: 2013-04-25

Posts: 9,538

Website

Issue 37: hf mf restore not working due to authentication problem

I was reading on the old Google code issues list and this one triggers some ideas.   
As it is now, the "hf mf restore" uses the default key A 0xffffffffffff to write to the tag.
If the tag doesn't have this set then the restore command fails.

https://code.google.com/p/proxmark3/issues/detail?id=37

I don't know how many uses the this command anymore but a  choice to use the default key or  use the keys from the keydump instead might be useful.

	UsbCommand c = {CMD_MIFARE_WRITEBL, {FirstBlockOfSector(sectorNo) + blockNo, keyType, 0}};
	memcpy(c.d.asBytes, key, 6);

the suggested fix on the google code is another hardcoded solution, but I think an inparameter solution would be nicer.

    PrintAndLog("Usage:   hf mf restore [card memory]");
    PrintAndLog("  [card memory]: 0 = 320 bytes (Mifare Mini), 1 = 1K (default), 2 = 2K, 4 = 4K");
    
          |

   PrintAndLog("Usage:   hf mf restore [card memory] -u <A|B> <KEY>");
   PrintAndLog("  [card memory]   : 0 = 320 bytes (Mifare Mini), 1 = 1K (default), 2 = 2K, 4 = 4K");
   PrintAndLog("  -u                     : use keys from dumpkeys.bin file when writing to tg");
   PrintAndLog("  <A|B>  <KEY>    : use following keytype and key when writing to tag");
   

lalelu

Member

Registered: 2014-10-23

Posts: 4

Re: Issue 37: hf mf restore not working due to authentication problem

Hi,

this feature would be a huge improvement to the PM3.

Due lack of programming skills, I hope here is someone in the board who could do this....

iceman

Administrator

Registered: 2013-04-25

Posts: 9,538

Website

Re: Issue 37: hf mf restore not working due to authentication problem

One can wish,   It's not a big change to implement this behavior on the client.