[Gllug] Phone unlocking
Richard Jones
rich at annexia.org
Mon Aug 2 15:04:51 UTC 2004
On Mon, Aug 02, 2004 at 03:48:24PM +0100, Ashley Evans wrote:
> With it being so hot in the office I have not got too much of an
> inclination to do "real" work atm so I decided to start a
> mini-investigation. No conclusions so far and I'm waiting for Orange
> (notorious "lockers") to get back to me, preferably with the algorithm
> itself, however, this is unlikly. As I spoke with a gentleman in the
> Press Office there is a 99.9% chance that I won't be called back :)
>
> I orginally contacted various Nokia telephone numbers abut this but was
> informed that the locking is added to the phone (firmware, I presume) by
> the network operators themselves. Not sure if this really is the case.
>
> Maybe my first question should be "Does, fundementally, this algorithm
> require you credit card number?"
Indeed it does not!
Phone unlocked, using a dodgy bit of Windows code running nicely in a
sandboxed Wine environment.
Dodgy code from here[1]:
http://www.unlockme.co.uk/dct4free.html
Safe Wine sandbox left to your ingenuity.
I even found the source code to the algorithm used (in Pascal :-!
Windows programmers, please use a Real Language!) The source tells me
that phone locking is just security-through-obscurity. In fact, all
was revealed when someone nicked the source code and executable from
an "authorized" unlocker!
Rich.
[1] When you run the above-mentioned bit of code, in a really bizarre
bit of Windowsism, it writes an executable called C:\Calc.exe into the
Wine sandbox. This is actually a command-line program which takes
IMEI and network number, in that order, and prints out the codes
required, so cut the crappy & borked user interface and just use that.
--
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