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0012EBBC  I  00A589E0    ASCII "Привет мир"

message db 'hello world' , 0x00

MOV EDX, offset String

;=====================================================================
;                               StrCpy
;=====================================================================
; This procedure copies a string into a buffer. If the buffer is smaller
; than the string to copy, it returns 0.
;=====================================================================
StrCpy PROC uses edi esi StrBuffer:DWORD,String:DWORD
        invoke StrLen,String
        mov ecx,eax
        mov edi,StrBuffer
        mov esi,String
        rep movsb
        ret
StrCpy ENDP

;=====================================================================
;                               StrLen
;=====================================================================
; This procedure takes an address of a string as its parameter and
; returns the length of the string in eax
;=====================================================================
StrLen PROC uses edi String:DWORD
        mov edi,String
        mov al,0
        mov ecx,0FFFFFFFFh
        repne scasb
        sub ecx,0FFFFFFFFh
        neg ecx
        dec ecx
        mov eax,ecx
        ret
StrLen ENDP