what is my assembly code doing? Project - Microsoft Visual Studio Quick Launch (

Question

what is my assembly code doing?

Project - Microsoft Visual Studio Quick Launch (Ctrl+Q) File dit View Project Build Debug learn lools lest R lools Analyze Window Help Antonio de la Garza Debug Win32 Local Windows Debugger· yM- 1 include Irvine32.inc data 3 varl BYIE "yo", 4 var2 DWORD 066h var3 WORD 2 DUP (08899h) 6 var4 WORD 01122h, 83344h .code 1 mairi pruc 12 13 14 15 16 main endp 17 end main mov eax, orTSCT var3 mov eax, TYPE var2 mov eax, LENGTHOF var4 mov eaX,SIZtoF var'4 invoke ExitProcess, 90% Error List Output

Explanation / Answer

please find below the inline comments to understand the process:

VAR1 BYTE "yo",0 // initialising a string ""yo""
VAR2 DWORD 066h //The dword will be allocated in memory
VAR3 WORD 3 DUP (08899h)
VAR4 WORD 0122h, 01143h
VAR5 BYTE 00h

section .code
main proc
mov eax, OFFSET VAR3 //starting address of string
mov eax, TYPE VAR2 //moving data
mov eax, LENGTHOF VAR4 //initialize loop counter and returns the number of elements
mov eax, SIZEOF VAR4 //returns the number of bytes
invoke EXITProcess, 0
main endp
end main

so finally this code will reverse the "yo" to "oy"

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