beta.blog

Example of how to copy a file in flat assembler. Copying a file can be done via the SHFileOperationA command.

format PE GUI 4.0
entry start

include 'win32ax.inc'

;================== code =====================
section '.code' code readable executable
;=============================================

proc start
        mov [lpFileOp.wFunc],FO_COPY             ; We want the shell to copy a file
        mov [lpFileOp.fFlags],FOF_SILENT         ; .. silently
        mov [lpFileOp.pFrom],SzFileFrom          ; The file which is going to be copied
        mov [lpFileOp.pTo],SzFileTo              ; The name of the new file

        invoke SHFileOperationA,lpFileOp         ; Execute the operation

        invoke ExitProcess,NULL                  ; Exit this program
endp

;=================== data ====================
section '.data' data readable writeable
;=============================================

FO_COPY    = 2
FOF_SILENT = 4
SzFileFrom db 'source.txt',0
SzFileTo   db 'target.txt',0

struct  SHFILEOPSTRUCT
        hWnd dd ?
        wFunc dd ?
        pFrom dd MAX_PATH
        pTo dd MAX_PATH
        fFlags dw ?
        fAnyOperationsAborted dd ?
        hNameMappings dd ?
        lpszProgressTitle dd ?
ends

lpFileOp SHFILEOPSTRUCT

;=============================================
section '.idata' import data readable
;=============================================

library         kernel32,'KERNEL32.DLL',\
                shell32,'SHELL32.DLL'

import          kernel32,\
                ExitProcess,'ExitProcess'

import          shell32,\
                SHFileOperationA,'SHFileOperationA'