具体过程:

一 用visual studio2022新建一个x86汇编项目

二 调用win32api 函数MessageBoxA的汇编程序代码

x86_call_win32api.asm

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;x86_call_win32api.asm
.586
.model flat,stdcall
option casemap:none

includelib ucrt.lib
includelib legacy_stdio_definitions.lib
includelib Kernel32.lib
includelib User32.lib

MessageBoxA proto hWndx:DWORD,lpText:BYTE,lpCaption:BYTE,uType:DWORD

extern printf:proc

.data
.code
main proc
	push 0
	push 0
	push 0
	push 0
	call MessageBoxA
	ret
main endp
end

备注：

1.调用MessageBoxA需要库includelib Kerne132.lib和includelib User32.lib

2.MessageBoxA proto hWndx:DWORD,lpText:BYTE,lpCaption:BYTE,uType:DWORD的意思是调用函数并传参数

三 调用退出进程函数ExitProcess的汇编程序代码

x86_call_win32api.asm

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;x86_call_win32api.asm
.586
.model flat,stdcall
option casemap:none

includelib ucrt.lib
includelib legacy_stdio_definitions.lib
includelib Kernel32.lib
includelib User32.lib

MessageBoxA proto hWndx:DWORD,lpText:BYTE,lpCaption:BYTE,uType:DWORD
ExitProcess proto uCode:DWORD

extern printf:proc

.data
.code
main proc
	push 0
	push 0
	push 0
	push 0
	call MessageBoxA
	push 0
	call ExitProcess
main endp
end