Tiny PE

tinype.asm

format binary as 'exe'
IMAGE_DOS_SIGNATURE	equ 5A4Dh
IMAGE_NT_SIGNATURE	equ 00004550h
PROCESSOR_AMD_X8664	equ 8664h
IMAGE_SCN_CNT_CODE	equ 00000020h
IMAGE_SCN_MEM_READ	equ 40000000h
IMAGE_SCN_MEM_WRITE	equ 80000000h
IMAGE_SCN_CNT_INITIALIZED_DATA	equ 00000040h
IMAGE_SUBSYSTEM_WINDOWS_GUI equ 2
IMAGE_NT_OPTIONAL_HDR64_MAGIC	equ 20Bh
IMAGE_FILE_RELOCS_STRIPPED  equ 1
IMAGE_FILE_EXECUTABLE_IMAGE equ 2
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE equ 8000h
include 'win64a.inc'
org 0
use64
IMAGE_BASE = 400000h
Signature:	dw IMAGE_DOS_SIGNATURE,0
ntHeader	dd IMAGE_NT_SIGNATURE;'PE'
;image_header--------------------------
.Machine	dw PROCESSOR_AMD_X8664
.Count_of_section   dw 1;2
.TimeStump	dd 0
.Symbol_table_offset	dd 0;ntHeader
.Symbol_table_count dd 0
.Size_of_optional_header dw section_table-optional_header
.Characteristics    dw 0x20 or IMAGE_FILE_RELOCS_STRIPPED or\
IMAGE_FILE_EXECUTABLE_IMAGE
;20h Handle >2Gb addresses
;-------------------------------------
optional_header:
.Magic_optional_header	dw IMAGE_NT_OPTIONAL_HDR64_MAGIC
.Linker_version_major_and_minor dw 9
.Size_of_code           dd 0
.Size_of_init_data      dd 0;xC0
.Size_of_uninit_data    dd 0
.entry_point            dd EntryPoint
.base_of_code           dd ntHeader
.image_base             dq IMAGE_BASE
.section_alignment      dd 4
.file_alignment         dd 4
.OS_version_major_minor dw 5,2
.image_version_major_minor      dd 0
.subsystem_version_major_minor  dw 5,2
.Win32_version          dd 0
.size_of_image          dd end_import
.size_of_header         dd section_table
.checksum               dd 0
.subsystem              dw IMAGE_SUBSYSTEM_WINDOWS_GUI
.DLL_flag               dw IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
.Stack_allocation       dq 0x100000
.Stack_commit           dq 0x1000
.Heap_allocation        dq 0x100000
.Heap_commit            dq 0x1000
.loader_flag            dd 0
.number_of_dirs         dd (section_table-export_RVA_size)/8
export_RVA_size         dq 0
.import_RVA             dd import_
.import_size            dd end_import-import_
;------------------------------------------------
section_table:
.name                   dq '.text'
.virtual_size           dd end_import-EntryPoint
.virtual_address        dd EntryPoint
.Physical_size          dd end_import-EntryPoint
.Physical_offset        dd EntryPoint
.Relocations_and_Linenumbers dq 0
.Relocations_and_Linenumbers_count dd 0
.Attributes    dd IMAGE_SCN_MEM_WRITE or IMAGE_SCN_CNT_CODE or IMAGE_SCN_MEM_READ or IMAGE_SCN_CNT_INITIALIZED_DATA
;--------данные, код и импорт-----------------------------------------
EntryPoint:
   enter 20h,0        ; space for 4 arguments + 16byte aligned stack
   xor ecx, ecx       ; 1. argument: rcx = hWnd = NULL
   mov r9, rcx        ; 4. argument: r9d = uType = MB_OK = 0
   mov edx,section_table+IMAGE_BASE  ; 2. argument: edx = window text
   mov r8,rdx         ; 3. argument: r8  = caption
   call [MessageBox]
   leave
   ret
Import_Table:
user32_table:
MessageBox  dq _MessageBox
import_:
dd 0,0,0,user32_dll,user32_table
dd 0
user32_dll    db "user32",0,0
dw 0
_MessageBox db 0,0,"MessageBoxA"
end_import:
;times 268-end_import db 0  ;filling up to 268 bytes
EndOfImage: