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#1 2019-04-03 13:43:53
- nulldev
- Contributor
- Registered: 2019-03-18
- Posts: 14
[solved] Unable to authenticate with key.
Trying to to do a nested on a Mifare Classic 1K. I have a sector 15 A and B keys
proxmark3> hf mf chk *1 A t default_keys.dic
|---|----------------|---|----------------|---|
|sec|key A |res|key B |res|
|---|----------------|---|----------------|---|
|000| ffffffffffff | 0 | ffffffffffff | 0 |
|001| ffffffffffff | 0 | ffffffffffff | 0 |
|002| ffffffffffff | 0 | ffffffffffff | 0 |
|003| ffffffffffff | 0 | ffffffffffff | 0 |
|004| ffffffffffff | 0 | ffffffffffff | 0 |
|005| ffffffffffff | 0 | ffffffffffff | 0 |
|006| ffffffffffff | 0 | ffffffffffff | 0 |
|007| ffffffffffff | 0 | ffffffffffff | 0 |
|008| ffffffffffff | 0 | ffffffffffff | 0 |
|009| ffffffffffff | 0 | ffffffffffff | 0 |
|010| ffffffffffff | 0 | ffffffffffff | 0 |
|011| ffffffffffff | 0 | ffffffffffff | 0 |
|012| ffffffffffff | 0 | ffffffffffff | 0 |
|013| ffffffffffff | 0 | ffffffffffff | 0 |
|014| ffffffffffff | 0 | ffffffffffff | 0 |
|015| xxxxxxxxxxxx | 1 | ffffffffffff | 0 |
|---|----------------|---|----------------|---|
proxmark3> hf mf chk *1 B t default_keys.dic
|---|----------------|---|----------------|---|
|sec|key A |res|key B |res|
|---|----------------|---|----------------|---|
|000| ffffffffffff | 0 | ffffffffffff | 0 |
|001| ffffffffffff | 0 | ffffffffffff | 0 |
|002| ffffffffffff | 0 | ffffffffffff | 0 |
|003| ffffffffffff | 0 | ffffffffffff | 0 |
|004| ffffffffffff | 0 | ffffffffffff | 0 |
|005| ffffffffffff | 0 | ffffffffffff | 0 |
|006| ffffffffffff | 0 | ffffffffffff | 0 |
|007| ffffffffffff | 0 | ffffffffffff | 0 |
|008| ffffffffffff | 0 | ffffffffffff | 0 |
|009| ffffffffffff | 0 | ffffffffffff | 0 |
|010| ffffffffffff | 0 | ffffffffffff | 0 |
|011| ffffffffffff | 0 | ffffffffffff | 0 |
|012| ffffffffffff | 0 | ffffffffffff | 0 |
|013| ffffffffffff | 0 | ffffffffffff | 0 |
|014| ffffffffffff | 0 | ffffffffffff | 0 |
|015| ffffffffffff | 0 | xxxxxxxxxxxx | 1 |
|---|----------------|---|----------------|---|but when trying to do a nested I've got this:
proxmark3> hf mf nested 1 15 A xxxxxxxxxxxx
Can't authenticate to block: 15 key type:A key:xx xx xx xx xx xx
proxmark3> hf mf nested 1 15 B xxxxxxxxxxxx
Can't authenticate to block: 15 key type:B key:xx xx xx xx xx xxWhat could I do? Card is:
ATQA : 00 04
SAK : 08 [2]
TYPE : NXP MIFARE CLASSIC 1k | Plus 2k SL1
proprietary non iso14443-4 card found, RATS not supported
No chinese magic backdoor command detected
Prng detection: WEAK
Weird thing is that MCT is able to read sector 15, but not the pm3 
proxmark3> hf mf rdbl 15 B xxxxxxxxxxxx
--block no:15, key type:B, key:xx xx xx xx xx xx
#db# Authentication failed. Card timeout.
#db# Auth error
#db# READ BLOCK FINISHED
isOk:00
proxmark3> hf mf rdbl 15 A xxxxxxxxxxxx
--block no:15, key type:A, key:xx xx xx xx xx xx
#db# Authentication failed. Card timeout.
#db# Auth error
#db# READ BLOCK FINISHED
isOk:00 Thanx!
Last edited by nulldev (2019-04-04 17:13:30)
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#2 2019-04-03 14:40:16
- app_o1
- Contributor
- Registered: 2013-06-22
- Posts: 247
Re: [solved] Unable to authenticate with key.
Try again. Different angles/distances from tag-antenna.
Check that it works with default keys on tags you know work on default keys.
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#3 2019-04-03 14:45:35
- nulldev
- Contributor
- Registered: 2019-03-18
- Posts: 14
Re: [solved] Unable to authenticate with key.
It works with other cards. Not with just this one.
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#4 2019-04-03 22:01:48
- nulldev
- Contributor
- Registered: 2019-03-18
- Posts: 14
Re: [solved] Unable to authenticate with key.
I've managed to start a nested attack with mfcuk and obtained few keys from there. Then stopped and did a successful nested with the pm3 and obtained all keys targeting 0/A. Still it looks like that I can get authorized only on sector 0 with key A. Maybe another sector too, haven't tested them all, but most of keys doesn't work with pm3.
Then decided to test the card with the MCT and it did a full card dump of all sectors and then restored the dump back on card. Weird...
Any ideas?
Thank you!
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#5 2019-04-04 08:22:01
- piwi
- Contributor
- Registered: 2013-06-04
- Posts: 704
Re: [solved] Unable to authenticate with key.
Sectors and blocks are different things...
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#6 2019-04-04 14:40:31
- nulldev
- Contributor
- Registered: 2019-03-18
- Posts: 14
Re: [solved] Unable to authenticate with key.
Yes. Card has 16 sectors and 64 blocks. English is not my native and it's a matter of incorrect translation, not misunderstanding if I've swapped meanigs somewhere.
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#7 2019-04-04 16:49:19
- piwi
- Contributor
- Registered: 2013-06-04
- Posts: 704
Re: [solved] Unable to authenticate with key.
It is not about language or translation. You are trying to read block 15 using the key for sector 15.
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#8 2019-04-04 17:07:58
- nulldev
- Contributor
- Registered: 2019-03-18
- Posts: 14
Re: [solved] Unable to authenticate with key.
+1 I've got the point. I had to target the specific block, containing the key, instead of the sector it authorizes.
Thank you!
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