20 Aug
2008
20 Aug
'08
6:25 p.m.
Let us not lose our sense of humor on re-directs shall we ? If you think
this will waste your time, please don't read any further....
I have a PDF ( about 1.3 MBytes ) that supposedly came out of Stanford
University on how to read data from an 8051 with the locks set. They say it
only works on the older parts ( I do not know what was changed or when ) but
it isn't that hard to try it out. If you want a copy of the PDF please
contact me offline so we don't piss anybody else off.
Warmest regards, Steven
with
On Sun, Aug 17, 2008 at 01:08:57PM +0100, Philip
Pemberton wrote:
> Philip Pemberton wrote:
> >I don't think there's much that can be done with the LPFK without
> >desoldering the 8051 chip and reading out the program. Catch is, the
> >chip has probably had its encryption table programmed, and probably the
> >lock bits as well...
>
> I was right.
> The 8051 has both lock bits programmed. Zero activity in program mode,
all
outputs Hi-Z.
:(
Bummer, but thanks for checking that.
> Any experienced reverse engineers in the audience, or IBM collectors information /
drivers / docs for the LPFK?
No, I wish I did, though. I have two LPFKs waiting for me at home when I
get back in a few months, and I had been expecting that codeninja's stuff
was going to work.
I suspect that if PC drivers are unearthed, it will be a simple matter
to throw a serial analyzer on the line and look for traffic - I'd do that
myself with an HP4951, but, again, that will months from now.
I wish I could provide help, but without hardware, I'm reduced reading
this thread and hoping to learn from it.
Thanks,
-ethan