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Shub-nigurrath
December 14th, 2006, 17:34
Hi everybody,
after a long working finally the first tutorial on Symbian has been published. It's a long one, as you will soon see.
In my mind this would help to start a long series of contributions and discussion and possibly other tutorials.

Primer on Reversing Symbian S60 Applications.
Unfortunately the Symbian scene is not so prolific of tutorials and what I found after a lot of searching and talking with others
guys are just a few simple and quite old tutorials and few advanced things, mostly not written in English.
I decided then to take a long journey into this world, examining which tools you can use to disassemble the Symbian programs, how
to approach to them and what generally you can do to create and distribute patches for those applications.

I started from the ground up, just because as said there were no discussion forum like our (at least I have not found them) where
one can ask, the present special issue collects a series of single tutorials I wrote with different targets and difficulty levels.
Probably the few Symbian groups around will laugh at me for the simple or even not correct approach, but as usual if one knows
things better he should write a tutorial to demonstrate it.
The tutorial will cover different issues:
- Few words on the Symbian OS
-What instruments we have and what to use and customize them (particularly IDA)
-Practical examples of real applications
I also included a long list of references and further readings, as usual.


BTW consider also that the approach used for the java application example, is a general one, good for all java apps.


http://tutorials.accessroot.com

JMI
December 14th, 2006, 22:03
Again, Thanks Shub for sharing it with out members.

Regards,

Shub-nigurrath
December 20th, 2006, 07:10
Hi all,
I just updated the tutorial to version 1.1

I added several things and corrected some mistakes (10x to atzplzw too). Sorry for redownloads.

Here the history:

Version 1.1

Added IDA tutorials (§2.4.1) and IDA settings screenshots (§2.4.7)
Added 3D Minigolf discussion (§6.2)
Added sections §6.1.2, 6.2.2 and 6.3.1 “Lesson Learnt”, to each subchapter of §6.
Changed the chapter “Strings analysis of Symbian programs with IDA” §2.4.5 because I did a mistake on how IDA recognize strings.

Shub-nigurrath
May 9th, 2007, 05:57
version 1.2 is out.

Version 1.2

Added details on the PC Suite for Nokia 6600 (§2.1)
Added references to SISXplore for paragraph “A Note on SISX Files” (§2.2.3)
Added how to modify Symbian applications using an Hex Editor (§3.1.1)
Added how to create multi-disk sis installations (§6.3.1)
Small corrections here and there

sharingzee
May 13th, 2007, 19:29
Well, I tried the approachs described in your guide, using IDA Pro to Cracking SmallBase 4.5 for Nokia 9500.

Though it looks like this program, produced by Corisoft, uses some tricky kind of protection. In the hex visualization of the .app file there's no mention about the warning about "unregistered product". Instead this info is stuck in the .RSC file.

This is smthing different from the softwares present in the guide, if someone has any idea on how to deal with this, share with us.

Regards,

JMI
May 13th, 2007, 22:16
sharingzee:

DO NOT CROSS POST! One Post with the same information is enough and this Post suggests you havent read THE FRIGGIN FAQ. Time for you to do that NOW!.

Regards,

Shub-nigurrath
May 14th, 2007, 03:01
sharingzee,
most modern applications uses external resources so it's not a trick but a way of programming. Anyway it's the same used by the crackme included with the tutorial.

A tutorial specifically for these things will follow...

Shub-nigurrath
July 26th, 2007, 03:21
Hi all,
an update to the tutorial is online today:

Version 1.4 – added desquirr and example on its usage
- Added introduction to desquirr (§ 2.5.6)
- Used desquirr to help the reversing process (§ 3.1.1)

Hexxx
July 31st, 2007, 14:52
Some help for those who reverse s60 3rd applications:
http://xtin.activebb.net/Coaoue-c1/Mobile-and-Embedded-f1/-p231.htm#231

dELTA
August 1st, 2007, 08:55
Very nice work Hexxx! Thanks for your contributions!