SIM CARD CLONING

Smart card cloning is easy!
(GSM SIMs)

The Stages


• Scan the SIM to extract IMSI (just read it!)
and Ki, the 128 bit key (for COMP128-1
only, so far….)
• Now put the IMSI and Ki into some card
software
• And then copy it into a new SIM card
• We now have a cloned SIM

First we need to read the SIM
• A small reader, connected to a serial port.
Home made for $5

Then we need to find Ki

• We need Ki and IMSI, we can use
Simscan from Dejan’s pages that will
break COMP128-1

Here’s the software

• Simscan ready to go 

Now scanning the card
• Searching for the key

Getting there
• The result slowly appears (this one looks
interesting!)

Now we have it!
• This was a SIM supplied to delegates at a
meeting, Ki is a bit obvious isn’t it!

Now to create the software
• Using some more software from the
Internet called KiSsMi we create the
software for the card

We now need to program the SIM
• We use a single chip PIC computer which
is in a SIM shaped package (GOLD
CARD)
• We use a smart card programmer (easily
bought on the Internet)
• And then we program up the card….

The programmer…..
• With the card ready to go

The software for the programmer
• Just load in the software we created with

And we now have a cloned card.