Hi to everybody. I am new to the forum and currently bought a Proxmark3 Easy with Iceman firmware. I work for a hotel that uses Messerschmitt (https://www.messerschmitt.com) access control system for the guest rooms. As cards we currently got from them directly following types: Icode Slix2 and Mifare Ultralight EV1. The drawback is that the cards supplied by them are quit expenses, and we would like to find a cheaper supplier from China that can provide us with the compatible cards. Unfortunately, no manufactoring company in China has knowledge of Messerschmitt and their encoding on the cards to replicate them. I tried to order empty Icode Slix2 and Mifare Ultralight EV1 cards to check if they work, but unfortunately the encoder is not detecting them on read/write.
That’s why I bought a Proxmark3 hoping to discover what encoding the cards have and if I am able to simply copy the encoding to new cards. But I have no previous knowledge on how to use it.
While this is a sniff on a normal (non-Messerschmitt supplied) card trying to read it (1st screenshot) and then encode it (2nd screenshot) without success (no output from the Hocas software that is why the trace is so long because it is continuing to find a valid card to complete operation):
