MIFARE Classic® Compatible 4K Gen3

INTRODUCTION

Need to make perfect, undetectable clones of MIFARE Classic® 4K 4-Byte UID cards and tags ?

Our UID Modifiable "Magic" MIFARE Classic® Compatible 4K Gen3 allow for UID Modification, Block0 modification and permanently setting the UID - making them the only undetectable 4K cards availble.

Hands on: See the card in action

LibNFC - change UID

$ pn53x-tamashell
> 4a 01 00
> 42 02 90 FB CC CC 07 XX XX XX XX XX XX XX

Where xx xx xx xx xx xx xx is your target UID.
For 4-byte cards, your UID will be 4-bytes, for 7-byte cards, the UID will be 7-bytes.

LibNFC - Write to Block0

$ pn53x-tamashell
> 4a 01 00
> 42 02 90 F0 CC CC 10 04 12 19 c3 21 93 16 98 42 00 e3 20 00 00 00 00

Where 041219c3219316984200e32000000000 is the value for Block 0.

LibNFC - Lock the UID permanently:

$ pn53x-tamashell
> 4a 01 00
> 42 02 90 FD 11 11 00

Proxmark / iCopy-X - Change UID

hf mf gen3uid --uid 11223344556677 # 7-Byte UID: Replace 11223344556677 with the UID

hf mf gen3uid --uid 11223344` # 4-Byte UID: Replace 11223344 with the UID

Proxmark / iCopy-X - Set Block 0

hf mf gen3blk 041219c3219316984200e32000000000
 # Replace 041219c3219316984200e32000000000 with the Block 0 Value

Proxmark / iCopy-X - Freeze UID

hf mf gen3freeze 
 # Freeze the currently set UID

Live Demonstration - Proxmark

Live Demonstration - LibNFC

Unbricking

"Soft-bricking" refers to when a magic card has been configured in a way that prevents it from being detected. Ways of soft-bricking tags include:

• Incorrect BCC
• Incorrect SAK
• Incorrect ATQA
• Incorrect ATS
• Incorrect ACL (Access Control) Values

Some "soft-brick" situations can be resolved with special commands. If your MIFARE Classic® Compatible 4K Gen3 UID Modifiable is "soft-bricked", you can try recovering it with the following methods:

With Proxmark / iCopy-X

hf mf gen3blk 11223344440804000102030405060708090A0B0C0D0E0F # 4-byte UID cards

hf mf gen3blk 112233445566770844000102030405060708090A0B0C0D # 7-byte UID cards

With LibNFC

$ pn53x-tamashell
> 4a 01 00
> 42 02 90 F0 CC CC 10 11 22 33 44 44 08 04 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

$ pn53x-tamashell
> 4a 01 00
> 42 02 90 F0 CC CC 10 11 22 33 44 55 66 77 08 44 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D

Via external reader/writer and MTOOLS

Select the "UID Changer" function in MTools, select "bricked" and run the task

IMPORTANT:

Lab401 cannot provide refunds under any circumstances for cards that were 'bricked' due to incorrect configurations.