I think its more probabe to jus do away knox than crack it.
There are variants of N3 with knox disabled by the carriers,we could just start looking there for answers.
Resetting knox to 0x0 is probably the hardest thing to do right now since the bootloaders are locked and samsung wants to have TOTAL control on how we use our phones.
The best is to uninstall knox and start putting the right stuff in...no more samsung crap knox,no more samsung telling us how to use our phone,bought with our money!!!
Nokia 6300 > Nokia 6500 slide > HTC HD2 (both EU and TMO) > Dell streak > HTC inspire 4G > HTC Sensation 4G > Samsung Galaxy Note (GT-N7000)>Samsung Galaxy Note 2 LTE (GT-N7105)
Sammy's Flash binary counter is a BIIIIIAAAAAAATCH!!!!