DOS_Header:
   .e_magic     dw 'MZ'   ;IMAGE_DOS_SIGNATURE
   .e_cblp      dw 0x0080
   .e_cp        dw 0x0001
   .e_crlc      dw 0x0000
   .e_cparhdr   dw 0x0004
   .e_minalloc  dw 0x0010
   .e_maxalloc  dw 0xFFFF
   .e_ss        dw 0x0000
   .e_sp        dw 0x0140
   .e_csum      dw 0x0000
   .e_ip        dw 0x0000
   .e_cs        dw 0x0000
   .e_lfarlc    dw 0x0040
   .e_ovno      dw 0x0000
   .e_res       rw 4
   .e_oemid     dw 0x0000
   .e_oeminfo   dw 0x0000
   .e_res2      rw 10
   .e_lfanew    dd PE_header  ;PE header Offset

DOS_Stub:
 org 0
 use16
   push cs
   pop ds
   mov dx,msg
   mov ah,9h
   int 21h
   mov ax,4C01h
   int 21h
   msg:
   db 'win32 app!',13,10,'$'
 org $+DOS_Stub

rb 0x80 - $   ;$ equal to curent offset

Parameters:
NS = 1         ;NumberOfSections
BA = 0x400000  ;Base Address
SA = 0x1000    ;SectionAlignment
FA = 0x0200    ;FileAlignment

%% = BA+SA

PE_header:
   .Signature                   dd 'PE'
   FileHeader:
     .Machine                   dw 0x014C                  ;i386
     .NumberOfSections          dw NS
     .TimeDateStamp             dd %t
     .PointerToSymbolTable      dd 0
     .NumberOfSymbols           dd 0
     .SizeOfOptionalHeader      dw SectionTable-OptionalHeader
     .Characteristics           dw 0x818F                ;
   OptionalHeader:                             ;OptionalHeader has 31 fields
     .Magic                     dw 0x010B                  ;PE32
     .MajorLinkerVersion        db 1                   ;1.51
     .MinerLinkerVersion        db 51
     .SizeOfCode                dd 0
     .SizeOfInitializedData     dd 0
     .SizeOfUnInitializedData   dd 0
     .AddressOfEntryPoint       dd CodeSection
     .BaseOfCode                dd 0
     .BaseOfData                dd 0
     .ImageBase                 dd BA
     .SectionAlignment          dd SA
     .FileAlignment             dd FA
     .MajorOSVersion            dw 1                 ;1.0
     .MinorOSVersion            dw 0
     .MajorImageVersion         dw 0                  ;0.0
     .MinorImageVersion         dw 0
     .MajorSubSystemVerion      dw 4             ;4.0
     .MinorSubSystemVerion      dw 0
     .Win32VersionValue         dd 0             ;Reserved
     .SizeOfImage               dd 1500h;SA*(NS+1)          ;16384 bytes
     .SizeOfHeaders             dd SizeOfHeaders
     .CheckSum                  dd 0x6B94
     .SubSystem                 dw 2             ;Win32 GUI
     .DllCharacteristics        dw 0
     .SizeOfStackReserve        dd 0x1000
     .SizeOfStackCommit         dd 0x1000
     .SizeOfHeapReserve         dd 0x10000
     .SizeOfHeapRCommit         dd 0
     .LoaderFlags               dd 0                   ;Obsolete
     .NumberOfDataDirectories   dd 16

     Data_Directories:
       .Export_Table            dd 0,0        ; Rva,Size
       .Import_Table            dd 0,0    ; Rva,Size
       .Resource_Table          dd 0,0             ; Rva,Size
       .Exception_Table         dd 0,0  ; Rva,Size
       .Certificate_Table       dd 0,0  ; Rva,Size
       .Relocation_Table        dd 0,0  ; Rva,Size
       .Debug_Data              dd 0,0  ; Rva,Size
       .Architecture            dd 0,0  ; Rva,Size
       .Global_PTR              dd 0,0  ; Rva,Size
       .TLS_Table               dd 0,0  ; Rva,Size
       .Load_Config_Table       dd 0,0  ; Rva,Size
       .BoundImportTable        dd 0,0  ; Rva,Size
       .ImportAddressTable      dd 0,0  ; Rva,Size
       .DelayImportDescriptor   dd 0,0  ; Rva,Size
       .COMplusRuntimeHeader    dd 0,0  ; Rva,Size
       .Reserved                dd 0,0  ; Rva,Size

SectionTable:
  Section1:
    .Name                       dq '.code'
    .VirtualSize                dd 0x500;1C
    .VirtualAddress             dd CodeSection
    .SizeOfRawData              dd 1000;SizeOfCode
    .PointerToRawData           dd PointerToCode
    .PointerToRelocations       dd 0
    .PointerToLinenumbers       dd 0
    .NumberOfRelocations        dw 0
    .NumberOfLinenumbers        dw 0
    .Characteristics            dd 0xE0000060 ;0x60000020        ;CODE+MEM_READ+MEM_EXECUTE


SizeOfHeaders = 0x200
rb SizeOfHeaders - $
RawData:

PointerToCode:
org  SA
CodeSection:
repeat 1000
ret
end repeat

SizeOfCode = $-CodeSection