RE: Questions on GSM Penetration test

["Fernando Cardoso" <fernando.cardoso () whatevernet com>]

Marc Witteman gave a nice overview on methods to break smart cards security
in the BlackHat Briefings Europe 2001. You can check his presentation on
http://www.blackhat.com/presentations/bh-europe-01/marc-witteman/witteman.pp
t.

Cheers

Fernando

--
Fernando Cardoso - Security Consultant       WhatEverNet Computing, S.A.
Phone : +351 21 7994200                      Praca de Alvalade, 6 - Piso 6
Fax   : +351 21 7994242                      1700-036 Lisboa - Portugal
email : fernando.cardoso () whatevernet com     http://www.whatevernet.com/


> > What would you mean by "peal off"? Would that be some kind of physical
> > tampering? Most smart cards often have some kind of "Tamper Resistant
> > Sealing". Also if you try to peal of the adhesive coating, you will most
> > probably break the delicate fuse wire which most Smart Card
> companies run
> > in that adhesive coating, thereby making the whole smart-card completely
> > useless.
>
> "The Netherlands Organisation for Applied Scientific Research"
> has the tools
> for 'pealing' of the chip layer by layer (thus not the card).
> Again I do not
> know the exact technology they use but it is not just your ordenary knive
> and skrewdriver. More like elektron microscope and the likes. And I do not
> think they are the only ones on the planet who can.
> In this fase the are not interested in the working of the whole device as
> such. They just take the whole thing apart and 'write every thing down'.
> Later they reconstruct the device in simulators, like putting it in Orcad,
> and then the creative thinking process starts, I guess.


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