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#1 2018-08-22 19:50:41
- Kel
- Contributor
- Registered: 2018-08-21
- Posts: 2
MIFARE - S70 - 4K - 7bits UID
Hi there,
the other day I was fiddling with a [MIFARE - S70 - 4K - 7bits UID] card (got on LAB401)
on my android phone and I happened to have erased sector 0 (all 4 blocks are wiped of data.) Dumb of me I know ;p
On Lab401 they say the card is impossible to block / brick... But I guess not to that extent...
Now my question :
is the card really bricked ?
Or there is a way to restore the lost sector, through some commands like by using hf 14a raw for instance ?
thanks in advance.
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#2 2018-09-01 15:45:28
- dontlook
- Contributor
- Registered: 2017-01-28
- Posts: 57
Re: MIFARE - S70 - 4K - 7bits UID
It depends on what kind of UID changeable card. If you can modify block 0 with your Android phone then I would suspect it is Gen2 and does not have magic Chinese commands. You can then most certainly brick it by writing bad access bits in the 4th block of a sector.
Been there, done that, it sucks.
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#3 2018-09-21 15:34:49
- merlok
- Contributor
- Registered: 2011-05-16
- Posts: 132
Re: MIFARE - S70 - 4K - 7bits UID
If it was only block 0 - proxmark can fix this.
if also block3 - cant withouth backdoor(
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