TYPE : NXP MIFARE CLASSIC 1k | Plus 2k SL1 Which results in a response along the lines of: #db# DownloadFPGA(len: 42096) You should now have a proxmark command prompt, so with a card on the proxmark, assuming it’s a high frequency card, you can: proxmark3> hf search dev/cu.usbmodem14101 : > ls /dev/cu*Ĭonnect to the modem show from the last command: > /proxmark3 /dev/cu.usbmodem14101 Install from the command line (I’m using a Mac here): > brew tap proxmark/proxmark3Ĭhange to your proxmark client directory: > cd proxmark3/client It’s useful to have one of these before progressing. If you want a clone of the card then you want both the UID and the data on the card to be copied across to the new card, but this isn’t normally possible due to the UID being read only.Įnter the “UID changeable”, aka “Chinese backdoor” (seriously) cards, which allow you to change their UID. They get written when the card is created and that area of memory is then made read only, so it can’t be changed. A quick note on cloning a cardĬards typically have their own unique ID (UID). Hopefully this step by step guide means others won’t need to do the trek. Understanding how to clone this card felt like a bit of a trek, but once I got there it didn’t seem like such a big deal. I have so far had experience with a few different card types, the only relatively easily cloneable one being the Mifare Classic 1K. Maybe some of the security isn’t that strong but the card type isn’t popular enough to have had people scrutinise it. It’s really not that straight forward, there are different cards with different functionality, some have defaults that make it simple to clone them (if the defaults haven’t been changed), some have good security and there are currently no methods to clone them – unless you’ve already got access keys. When I first started using the Proxmark, it all sounded like it was going to be easy, you wave a card at the device, the Proxmark works it’s magic and then you can emulate or clone the card.
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January 2023
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