Hello world console program

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Lucy Berie

Joined: 08 Dec 2012
Posts: 13

Lucy Berie 08 Dec 2012, 11:43

Hello, I'm Lucy Berie and I would like to write a "Hello World" console program by assembly language. I'm using C++ but also I very like assembly. Smile

I want to translate :

Code:


#include <iostream>

int main()
{
printf ("Hello World !");
}

To Assembly code...

If you tell me how and the code, it would be very helpful Wink

08 Dec 2012, 11:43

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20760
Location: In your JS exploiting you and your system

revolution 08 Dec 2012, 11:51

Lucy: Answers are given in the other thread.

Look in the "examples" folder in the fasm download.

08 Dec 2012, 11:51

typedef

Joined: 25 Jul 2010
Posts: 2893
Location: 0x77760000

typedef 09 Dec 2012, 17:12

A lady ?

Anyways, @Rev be kind. And IIRC there are no console examples in the download folder.

@Lucy
Here's how.

Code:


format pe console


include 'win32ax.inc'

entry main

section '.data!!!' data readable writeable

strHello db 'Hello World !',13,10,0
strPause db 'pause',0

section '.txt' code executable readable

main:
       ; you can use crt functions or windows API.
       cinvoke printf,strHello
       cinvoke system,strPause; or import getc()
       ; or
       ; invoke printf,srtHello
       ; add esp, 4

       ; or use WriteFile and GetStdHandle APIs
       push 0
       call [ExitProcess]
      
section '.blah' import data readable

library kernel32,'kernel32.dll',\
    msvcrt,'msvcrt.dll'    ;; C-Run time from MS. This is always on every windows machine

import kernel32,\
          ExitProcess,'ExitProcess'
import msvcrt,\
          printf,'printf',\
          system,'system'

09 Dec 2012, 17:12

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 12 Dec 2012, 08:16

Lucy Berie,

printf() is prototyped in stdio.h, iostream gives you (object-oriented-&-overloaded) operator << for cout.

Heh, you can even use puts() for a free CR/LF. Wink

12 Dec 2012, 08:16

bzdashek

Joined: 15 Feb 2012
Posts: 147
Location: Tolstokvashino, Russia

bzdashek 14 Dec 2012, 15:05

The flower of blooming prairies,
Lucy "asm" Berie.

sorry, couldn't constrain myself.

14 Dec 2012, 15:05

mindcooler

Joined: 01 Dec 2009
Posts: 423
Location: Västerås, Sweden

mindcooler 14 Dec 2012, 15:36

Code:

format PE console
include 'win32ax.inc'
.code
start:
        invoke  WriteConsole,<invoke GetStdHandle,STD_OUTPUT_HANDLE>,"Hello World !",13,0
        invoke  Sleep,-1
.end start

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14 Dec 2012, 15:36

chastitywhiterose

Joined: 13 Oct 2025
Posts: 15

chastitywhiterose 28 Oct 2025, 01:09

typedef wrote:

A lady ?

Anyways, @Rev be kind. And IIRC there are no console examples in the download folder.

This is correct. I could not find any Hello World examples in the downloads for FASM except GUI messagebox examples. I will try the examples from this thread and hopefully be able to translate my Assembly programs from Linux to Windows because all they ever do is output text to a console.

28 Oct 2025, 01:09

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