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LocoDelAssembly
Your code has a bug


Joined: 06 May 2005
Posts: 4633
Location: Argentina
LocoDelAssembly
Raedwulf, I don't remember anything of this anymore, perhaps my code was just to verify that get_dword_value doesn't corrupts anything?
Post 06 Nov 2007, 14:20
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Raedwulf



Joined: 13 Jul 2005
Posts: 375
Location: United Kingdom
Raedwulf
Umm but you did say
Quote:
Changing the calling code of get_dword_value with this extremist register protection code fixes the segment origin corruption


So it does suggest that that was the fix Razz.

I actually might just use the Elf from scratch method and wait for Tomasz to get round to making a nicer format specification. I finally got round to testing the fasm code and it work with my new patched version but when I tried to convert the libc version of FASM, the program would just not run ^^ Smile.

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Raedwulf
Post 06 Nov 2007, 14:36
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LocoDelAssembly
Your code has a bug


Joined: 06 May 2005
Posts: 4633
Location: Argentina
LocoDelAssembly
Quote:
So it does suggest that that was the fix

Disadvantage of people that doesn't speak English natively Razz

I was wondering if this is good idea after all. On Windows it is OK to import DLLs directly without linker, but on Linux, when you link to a shared library using linker, sometimes you also add some extra code to your executable (for example linking against C library).

So, skipping the linker will be reliable or we gonna just abuse of the fact that the current implementation of a certain library can work anyway?
Post 06 Nov 2007, 14:52
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Raedwulf



Joined: 13 Jul 2005
Posts: 375
Location: United Kingdom
Raedwulf
You have a point there... I don't know for sure but I think its pretty portable provided that the *.so name is the same and all the supported symbols are present.

So basically if the *.so is not present by that name you will have to reassemble. However if you use C/C++ you will also have to relink/recompile. So I don't think there's too much of a difference.

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Raedwulf
Post 06 Nov 2007, 21:18
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nocona



Joined: 04 Aug 2007
Posts: 35
nocona
Quote:

nocona: where are you from? I know you're from Southeast asia because I can speak Malay as well "mula" was a dead giveaway in the examples lol. I was like... huh!!?? . I used to live in Brunei and did my primary/secondary-schooling up to O-levels there.

saya dari Malaysia Smile. Negeri Sabah. Saya pasti awak pernah dengar mengenainya sebab Sabah sangat dekat dengan Brunei.

In Windows, linker also add codes to our executable.. otherwise we cannot get those arguments to main.. the same thing goes for linux.. the extra codes are there to support all the C stuff.

the problem here is when building a dll (dynamically shared object) in linux, because afaik every linker available use section header to get info from our object, but the dynamic linker don't need it. perhaps somebody can hack gnu linker here?
Post 08 Nov 2007, 07:17
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Raedwulf



Joined: 13 Jul 2005
Posts: 375
Location: United Kingdom
Raedwulf
<Ok removed personal stuff into PM>

Maybe add the normal section info -> because I'm guessing we're skipping all the sections using this method?

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Raedwulf
Post 08 Nov 2007, 08:30
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