Unable to dump/write on another card/tag

[Pilgrimsmaster]

@mcsolaar

below cards

AliExpress can be difficult to be certain of anything as they are pretty lose with their wording.
In my experience on AliExpress,
UID = gen1a CUID = gen2

Looking at your links, this is my best guess

They are all 4Byte UID’s ( What you want )

mO0BXsY = gen2

mOFl0sU = not 100% but think its gen1a

mtdB3w8 = ??gen1a??

mqK0bWM = T5577 + gen1a ( Basically an xMagic in key fob form factor)

Here’s some further reading for you

"magic" Mifare chips

The Mifare “classic” S50 1k chip? For many years the Mifare MF1ICS50 1k chip was used for all kinds of applications as a “secure chip” for everything from access control to stored value cards, and used for making localized payments within closed systems like public transit and laundry services. However, it uses a security mechanism called “crypto1” which is a simple, proprietary encryption mechanism that hardly has anything to do with modern cryptography. It has been broken for many years now, b…

@mcsolaar

Bear with me i’m a newbie

All good, thats what we are here for