A full dump is just 1024 bytes of hex — until you know how to read it. Using a real public-transport card, here’s how to go from raw sectors to the MAD, an NDEF message, a digital signature, and the access bits that decide what you can touch.
Tag: Mifare Classic
While cleaning up I found a stack of old chipcards and got curious. Here’s the full, honest log of getting a Proxmark3 built, flashed, and reading/writing Mifare Classic cards — segfaults, all-zero dumps, and every gotcha in between.