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Ramon_prox

Contributor

Registered: 2024-06-30

Posts: 4

Problems with Mifare classic 1k with weak PRNG

Hello,

I don't know if I can ask you the following question (or if this is the right channel to ask it through).

I just bought a Proxmark3, and I have installed the software titled "RfidResearchGroup/proxmark3" from GitHub with the latest version.

I want to audit a MIFARE Classic 1K type RFID card, but I am a novice and am learning the first steps. More information about the card I have is:

hf search

[|] Searching for ISO14443-A tag...
[+]  UID: 85 07 FB 0D
[+] ATQA: 00 04
[+]  SAK: 08 [2]
[+] Possible types:
[+]    MIFARE Classic 1K
[=] proprietary non iso14443-4 card found, RATS not supported
[+] Prng detection....... weak

In addition, I have run the following commands (unsuccessfully):

hf mf chk
hf mf autopwn
hf mf darkside
hf mf fchk -f mfc_default_keys
hf mf autopwn -f mfc_default_keys

And these are the results:

[+] found keys:

[+] -----+-----+--------------+---+--------------+----
[+]  Sec | Blk | key A        |res| key B        |res
[+] -----+-----+--------------+---+--------------+----
[+]  000 | 003 | ------------ | 0 | ------------ | 0
[+]  001 | 007 | ------------ | 0 | ------------ | 0
[+]  002 | 011 | ------------ | 0 | ------------ | 0
[+]  003 | 015 | ------------ | 0 | ------------ | 0
[+]  004 | 019 | ------------ | 0 | ------------ | 0
[+]  005 | 023 | ------------ | 0 | ------------ | 0
[+]  006 | 027 | ------------ | 0 | ------------ | 0
[+]  007 | 031 | ------------ | 0 | ------------ | 0
[+]  008 | 035 | ------------ | 0 | ------------ | 0
[+]  009 | 039 | ------------ | 0 | ------------ | 0
[+]  010 | 043 | ------------ | 0 | ------------ | 0
[+]  011 | 047 | ------------ | 0 | ------------ | 0
[+]  012 | 051 | ------------ | 0 | ------------ | 0
[+]  013 | 055 | ------------ | 0 | ------------ | 0
[+]  014 | 059 | ------------ | 0 | ------------ | 0
[+]  015 | 063 | ------------ | 0 | ------------ | 0
[+] -----+-----+--------------+---+--------------+----
[+] ( 0:Failed / 1:Success )

[=] Running darkside ...........
[-] Card is not vulnerable to Darkside attack (doesn't send NACK on authentication requests).

Could you give me some guidance? Any additional information you may need, just tell me the command

Thanks, best regards.

Last edited by Ramon_prox (2024-06-30 22:44:23)

iceman

Administrator

Registered: 2013-04-25

Posts: 9,530

Website

Re: Problems with Mifare classic 1k with weak PRNG

Sniff the reader / card communications

Ramon_prox

Contributor

Registered: 2024-06-30

Posts: 4

Re: Problems with Mifare classic 1k with weak PRNG

Sniff the reader / card communications

Could you recommend me some videotutorial to do sniffing with a laptop and a proxmark3?

Ramon_prox

Contributor

Registered: 2024-06-30

Posts: 4

Re: Problems with Mifare classic 1k with weak PRNG

Could someone recommend me some videotutorial on how to do sniffing with a laptop and a proxmark3??

Last edited by Ramon_prox (2024-08-15 17:18:44)