[Novalug] Diabetes Software chance

[gregory pryzby]

On Sun, Jul 22, 2007 at 06:01:23PM -0400, Peter Larsen wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> gregory pryzby wrote:
> > On Sun, Jul 22, 2007 at 08:47:49AM -0400, Jay Hart wrote:

<SNIP>
 
> > FWIW, you COULD just do it brute force. Get a meter, connect it and
> > poke/peek the device until you get what you need. That is how Tivo was
> > originally cracked. 
> 
> It's serial communication. How do you "tcpdump" that? I think I need a
> separate piece of hardware to look at the bits/bytes being sent? Is
> there a serial debugger for Linux/Windows?

I think that is what Tivo was when it started. That said, open the
device and read. If there is nothing, send a byte and set a bit and
continue reading/writing until something happens. 

Tridge I think wrote something explaining how he did it. 

-- 
greg pryzby                              greg at pryzby dot org
fingerprint: 8A1A DB90 869F 5DD1 D6E9 EEB6 C156 6B04 849F A86F
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : http://calypso.tux.org/pipermail/novalug/attachments/20070722/890fc01a/attachment.pgp