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Predator_PC_pGC
May 5th, 2001, 11:05
I have 2 cellphones, siemens c25 and nokia 8890. I have this cable which I can use to connect the siemens to my PC.

I was wondering if anyone here ever tried reversing the software of a mobile phone.. because it looks like fun

-Pred.

+SplAj
May 6th, 2001, 03:58
Servus Predator

h**p://gsmfree.rulez.at

Gluck auf

Ich bin es SplAj

Predator_PC_pGC
May 6th, 2001, 07:50
Danke splaj,
luckily I can read german

I was not really referring to unlocking the phone though.. but more like, reading the full image - changing some stuff, whatever that would be - then write it back IDA doesn't know of a C25 processor though and it does not support Nokia at all it seems.. that could be a little problem..

Oh well I'll keep on searching. Thanks for the url.

Schüss,
Ich bin es Predz

latigo
May 6th, 2001, 13:48
Hi Pred
I've been looking for stuff like this for a long time. If you ever get some info on this subject, please let me know.
I kinda quit my search long time ago due to (apparent) lack of material
on the web. I wanted (want) to tweak a motorola phone.
But any info will be ok.
See ya.

Latigo

rot8
May 6th, 2001, 13:50
Most of developers use ñ166 MC.
It is RISC.
Think about it

rot8
May 6th, 2001, 14:04
Whoops...
I meant C166

All the software for GSM phones is:
buggy proggie with..
1. Buggy GUI.
2. Stolen sequences of bytes, which do some job (unlockin, changin IMEI etc..)

nothing to reverse

qferret
May 6th, 2001, 21:22
I have seen a shareware utility to change some of the logos etc. on Nokia's...(actually, I think I found it because of a q posted in the newbies forum at one time [quite some time ago])

so it is definitely possible

Predator_PC_pGC
May 7th, 2001, 04:39
rot8, thanks very much for your kind info ;-)

so a RISC disassembler is step 1.
now an app that can read the rom image and write it back to the phone.

i don't know any programs that do one of these things

perhaps someone else does?

thnx,
Pred.

rot8
May 7th, 2001, 08:52
Quote:
Predator_PC_pGC (05-06-2001 18:39):
rot8, thanks very much for your kind info ;-)

so a RISC disassembler is step 1.
now an app that can read the rom image and write it back to the phone.

i don't know any programs that do one of these things

What programs you want to get ?
IDA 4.15+ disaccembles c166 bins perfectly.
And there are huge collections of FLASH (not eeprom used for mobile firmware) files and programs to upload FLASH files into phone can be found in Internet.
So, try
But I guess it is very hard target to reverse, such as 1-2mb of RISC code
And also you must know schematic of target phone and most functions of ASIC chips, that are in the phone.

Good luck.

qferret
May 7th, 2001, 23:00
Hey Predator...if you're interested, the name of the shareware proggy is LogoManager....you could tear that apart and see how it interfaces with the phone, etc......may or may not help

/me shrugs ;-)

Latigo
May 8th, 2001, 09:30
Hey Pred..i found some link here.
I don't know if you gonna learn or what, but you surelly will laugh
Give it a try: www.phonebashing.com

Bye!

Latigo

Predator_PC_pGC
May 9th, 2001, 03:26
I'm afraid I don't have ida 4.15 or higher (I got 4.04) but thanks rot8 for all your info;

thanks Latigo for that good laugh

tnx qferrety but i know about logomanager and it isn't what i'm looking for

thanks everyone thanks to my family and friends and collegues and those who supported me and... LOL!!

pred.