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steef



Joined: 12 Mar 2008
Posts: 2
steef
Hi , I'm new at assembly and I want to learn it.But I can't find any tutorials for FASM .I know the base conceptions of programing (I know php , visual basic) , but assembly is very different and I don't know from where to start !

Can you help me ?
Post 12 Mar 2008, 08:50
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AlexP



Joined: 14 Nov 2007
Posts: 561
Location: Out the window. Yes, that one.
AlexP
Try what I used, search google for "x86 assembly tutorial". Almost every one helped so much, but I think the only way to really learn is to just start programming. This should get u started:
Code:
format PE console
include '%fasminc%\win32ax.inc' ; or wherever your FASM/INCLUDE is
entry start ; specify where to start executing code

section '.code' code readable writeable
start: 
; code goes here

push 0
call [ExitProcess]

section '.data' data readable writeable
; any of your data goes here

section '.idata' import data readable writeable
library kernel,'Kernel32.dll'

import kernel,\
    ExitProcess,'ExitProcess'
    

That's a pretty standard template for windows programs, use "Printf" from MSVCRT.dll is simple console output (formatting, too). What I used to learn is a combination of the Intel Instruction Manuals, FASM documentation, small online tutorials.
Post 12 Mar 2008, 12:02
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steef



Joined: 12 Mar 2008
Posts: 2
steef
Ok ,thanks for this help , but i can't find any online tutorials for real beginners.I know already the registers , and few x86 instructions , but i don't know how to apply this in windows.Just for an example : I found an example program , which displays a message box

Code:
include 'win32ax.inc'

.data
     msgBoxCaption  db   'Iczelion Tutorial No.2',0
     msgBoxText     db   'Win32 Assembly with FASM is Great!',0

.code


     start:
          invoke    MessageBox,NULL,msgBoxText,msgBoxCaption,MB_OK + MB_ICONINFORMATION
          invoke    ExitProcess,0

.end start    


Ok , it works .I found that MessageBox is definated in win32ax.inc and it is an windows function , which takes 4 arguments and makes a message box.

But I don't know where to find windows funktions and what arguments did they want !?I tried in WIN32.HLP , but it didn't work.For example I found a function called 'CreateDialog' , tried to enter 'invoke CreateDialog.....' and FASM told me "Error: undefinated symbol 'CreateDialog'".I dont't know if the mistake is that in win32ax.inc isn't definated this funktion , or the syntax is different , or the dunction is incorrect !?
Post 13 Mar 2008, 16:13
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Picnic



Joined: 05 May 2007
Posts: 1288
Location: behind the arc
Picnic
Hi steef,
Check the fasm examples it's a good start, read about Win32 Headers
Download and read Fasm Icezelion tutorials
And you can also find a great number of examples about Windows programming on madmatt's site Download them all.
Post 13 Mar 2008, 18:01
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dap



Joined: 01 Dec 2007
Posts: 61
Location: Belgium
dap
See Paul Carter's tutorial. It uses NASM syntax but it's quite the same as FASM since it doesn't use advanced features.

_________________
(French only) http://dap.developpez.com
Post 13 Mar 2008, 19:42
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AlexP



Joined: 14 Nov 2007
Posts: 561
Location: Out the window. Yes, that one.
AlexP
And for reverence, use www.msdn.microsoft.com for any and all API needs, just search for it.
Post 13 Mar 2008, 21:08
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