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#1 2017-04-30 19:00:05

Bebeoix
Contributor
Registered: 2014-02-03
Posts: 22

Writing on sector 0 block 1, 2, and 3 (sector trail)

Hello,

I know sector 0 block 0 can't be written other than on a magic card (UUID...).

What about sec0 block 1, 2 and 3 on a normal mifare classic 1k ?
I get the error when trying to write, read is ok :
#db# Cmd Error: 04
#db# Write block error
#db# WRITE BLOCK FINISHED

So the auth is OK but the access bits is set so I can't write with the current key.
I tried the other valid keys I have for this tag.

Is there a way to find the hidden key that has write permissions for sec0 block1/2/3 ?
Or it is like sec0block0, just impossible.

Thanks,

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#2 2017-05-01 13:46:41

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Re: Writing on sector 0 block 1, 2, and 3 (sector trail)

read about the sector trailer.  It has besides two keys also access rights.

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