Re: Embedded fun : Hacking mp3-players

["Mohammad Hosein" <mhtajik () gmail com>]

so i recommend those of you who interested in same stuff to have a look at
this great book i'v been reading past weeks
"BIOS Disassembly Ninjutsu Uncovered"

the real problem with embedded reversing and modifications is the wide range
of chip and microcode developers and lack of "Processor Modules" although
IDA is supporting alot of DSPs , but first their source code is not
available and you cannot continue on some specific proc module to make it
work on other variations , and second , its not that easy to develop your
own proc module from every chip you got from scratch and , third , it does
not support any fpga for now . i faced alot of difficulties when i was
trying to understand , and maybe do some modifications on some gps microcode
a while back i knew the code is compressed but couldnt manage to find out
how , knew its using some kind of crc and hash , but again it was not easy
to figure out and the problem with hobbies is that they are not full time
job ;)

Regards
-mh



On Nov 23, 2007 1:49 AM, Hamid . K <elite_netbios () yahoo com> wrote:

> Hello,
>
> Recently I`ve began research on portable media/devices
> and using them as attack vector (nothing new here) , but
> I`ve tried to extend some old known tricks and add new
> techniques to this field . Since I can`t join cons for now,
> I`ve summed up some of results in a blog post .
> below is link to the post in case you`re interested.
>
>
> http://hkashfi.blogspot.com/2007/11/embedded-fun-hacking-mp3-players-muvo.html
>
> comments are really appreciated .
>
>
> Hamid.K
>
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