(GSM SIMs)
• 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
• A small reader, connected to a serial port.
Home made for $5
Simscan from Dejan’s pages that will
break COMP128-1
Now scanning the card
• Searching for the key
• The result slowly appears (this one looks
interesting!)
• This was a SIM supplied to delegates at a
meeting, Ki is a bit obvious isn’t it!
• Using some more software from the
Internet called KiSsMi we create the
software for the card
• 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….
• With the card ready to go
• Just load in the software we created with
And we now have a cloned card.


