INTRODUCTION
Need to make perfect clones of MIFARE Ultralight-C® cards and tags ? Our UID Modifiable "Magic" MIFARE Ultralight-C® Compatible tags are what you need.
The tag will function as a standard MIFARE Ultralight-C® compatible tag. Despite their advanced functionality, they have perfectly tuned antennas for optimised performance.
Technical Specifications
| Feature |
Information |
Notes |
| Chipset |
MIFARE Ultralight-C ® Compatible |
|
| Memory Size |
148 Bytes |
|
| UID Size |
7 Byte |
|
| UID Modifiable |
✔️ |
Multiple times |
| Chip Generation |
Gen 1a |
Chipset Generation Guide |
| Packaging |
1 Card per Pack |
|
Write Capabilities
| UID Modifiable |
Unlock Required |
DirectWrite / Block 0 |
One Time Write |
Notes |
| ✔️ |
|
|
|
|
Device Compatibility
| Compatibility |
UID |
R/W |
Config |
Notes |
| Flipper Zero |
✔️ |
✔️ |
✔️ |
|
| Proxmark / iCopy-X |
✔️ |
✔️ |
✔️ |
|
| Android & iOS |
✔️ |
✔️ |
✔️ |
MTools or MIFARE++ Ultralight
|
| LibNFC |
✔️ |
✔️ |
✔️ |
|
| ChameleonUltra |
✔️ |
✔️ |
✔️ |
Requires MTools |
Hands on: See the card in action
The Ultralight-C® Compatible UID Modifiable can be used with several tools:
LibNFC - change UID
To change the UID of your Ultralight-C® Compatible UID Modifiable tag with LibNFC, write a full tag dump to the tag, with the UID and BCC set appropriately. Do not use the
nfc-mfsetuid
tool to change the UID. This tool is built for MIFARE Classic® Chipsets, not MIFARE Ultralight-C® Chipsets - using the tool will
permanently brick your tag.
nfc-mfultralight w /tmp/ul.dmp --full # Replace ul.dmp with your FULL dump
Proxmark / iCopy-X
hf mfu setuid –uid 11223344556677 # Replace 11223344556677 with the UID
LibNFC - live demonstration
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 Ultralight-C® Compatible UID Modifiable is "soft-bricked", you can try recovering it with the following methods:
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.
