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Loading libraries in asm

 
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Stylo
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PostPosted: Thu Oct 21, 2010 1:59 pm    Post subject: Loading libraries in asm Reply with quote
i'm using TASM assembler to write assembly
i'd like to start using win32 api's but not using the invoke method,
instead i'd like to use the old fashion way, ( push parameters and then call ).
my code is as followed
Code:

.386
.model flat, stdcall
.data

 msg db "my msg$"

.code
 start:
 xor eax,eax
 lea edx,msg
 push eax
 push eax
 push edx
 push eax
 ; here i should call MessageBoxA, but i don't how to obtain it's address, or loading the user32.dll
 leave
 retn
 
 end start

any idea on how to get it?
Thanks.
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tombana
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PostPosted: Thu Oct 21, 2010 2:17 pm    Post subject: Reply with quote
Include the proper header files and try 'call MessageBoxA' or 'call [MessageBoxA]' . It should just import the function automatically (so it should link to user32).
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Stylo
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PostPosted: Thu Oct 21, 2010 2:25 pm    Post subject: Reply with quote
i tried taking user32.inc from fasm assembler and did
Code:

include 'user32.inc'

but it keeps saying couldn't find user32.inc
idk what i need to import?
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justa_dude
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PostPosted: Thu Oct 21, 2010 3:07 pm    Post subject: Reply with quote
MASM is free, works well, and includes examples. Check it out.
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tombana
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PostPosted: Thu Oct 21, 2010 4:54 pm    Post subject: Reply with quote
I agree with justa_dude. Try MASM or FASM which have many examples. (MASM is windows-only I believe).
If you want to use TASM just google for TASM examples to find out what files to include.
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Stylo
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PostPosted: Fri Oct 22, 2010 4:14 am    Post subject: Reply with quote
okay, i moved to fasm
much better
good ide and i dont have to use invoke Very Happy
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