;;; hellowin.asm
;;;
;;; nasm -fwin32 hellowin.asm
;;; link -subsystem:console -out:hellowin.exe -nodefaultlib -entry:main \
;;;    hellowin.obj user32.lib kernel32.lib

        global _main
        extern _MessageBoxA@16
        extern _ExitProcess@4

        MessageBox equ _MessageBoxA@16
        ExitProcess equ _ExitProcess@4

        section .text
_main:
        push 0                  ; MB_OK
        push title              ;
        push message            ;
        push 0                  ;
        call MessageBox         ; eax = MessageBox(0,message,title,MB_OK);
        push eax                ;
        call ExitProcess        ; ExitProcess(eax);
message:
        db 'Goodbye, World',0
title:
        db 'RosettaCode sample',0