%Define param1 [ebp+4]  ; param1 
%Define param2 [ebp+8]  ; param2 
%Define param3 [ebp+12] ; param3 
%Define param4 [ebp+16] ; param4 

[BITS 32]
mov ebp, esp                    
mov edi, param1
mov eax, [edi]
mov edi, param2
add eax, [edi]
mov edi, param3
mov [edi], eax
mov esp, ebp                    
ret

nasmw -f bin 1.asm -o 1.bin 

using System;
using System.Runtime.InteropServices;
    
namespace ConsoleApplication1
{
    unsafe class Program
    {

        [DllImport("User32.dll")]
        public static extern IntPtr CallWindowProc(byte* ptr, 
        int* param1 , int* param2 , 
        int* param3 , int* param4 );

        static void Main(string[] args)
        {
            
            // mashina kodi
            byte[] code ={0x89, 0xe5, 0x8b, 0x7d, 0x04, 0x8b, 0x07, 0x8b, 0x7d, 0x08, 0x03, 
                                      0x07, 0x8b, 0x7d, 0x0c, 0x89, 0x07, 0x89, 0xec, 0xc3, 0x00};

            // code uchun pointerni olish va o'zgaruvchilar uchun 
            // "qo'zg'almas" hududga kirish
            fixed (byte* pointer = &code[0])
            {

                int p1, p2, p3, p4;
                p1 = 15; p2 = 75; p3 = p4 = 0;
                Console.WriteLine("Avval: p1={0} p2={1} p3={2} p4={3}", p1, p2, p3, p4);
                
                // kodni chaqirish
                CallWindowProc(pointer, &p1, &p2, &p3, &p4);

                Console.WriteLine("Keyin: p1={0} p2={1} p3={2} p4={3}", p1, p2, p3, p4);


                Console.ReadKey();

            }

        }


    }

}

byte[] code={0x55, 0x89, 0xe5, 0x81, 0xec, 0x0c, 0x00, 0x00, 0x00, 0x8b, 0x7d, 
                        0x08, 0x8b, 0x07, 0x89, 0x45, 0xf8, 0x8b, 0x7d, 0x10, 0x8b, 0x07, 
                        0x89, 0x45, 0xf4, 0x31, 0xc9, 0x51, 0x8b, 0x7d, 0x0c, 0xc7, 0x07, 
                        0x01, 0x00, 0x00, 0x00, 0xb9, 0x01, 0x00, 0x00, 0x00, 0x51, 0x89, 
                        0xc8, 0xe8, 0x35, 0x00, 0x00, 0x00, 0x89, 0x5d, 0xfc, 0x89, 0xd9, 
                        0x51, 0x89, 0xc8, 0xe8, 0x28, 0x00, 0x00, 0x00, 0x3b, 0x5d, 0xfc, 
                        0x75, 0x05, 0x8b, 0x7d, 0x0c, 0xff, 0x07, 0x59, 0x81, 0xc1, 0x09, 
                        0x00, 0x00, 0x00, 0x3b, 0x4d, 0xf8, 0x72, 0xe2, 0x59, 0x41, 0x3b, 
                        0x4d, 0xf8, 0x72, 0xce, 0x59, 0x41, 0x3b, 0x4d, 0xf4, 0x72, 0xb8, 
                        0x89, 0xec, 0x5d, 0xc3, 0x31, 0xdb, 0x31, 0xd2, 0xb9, 0x0a, 0x00, 
                        0x00, 0x00, 0xf7, 0xf1, 0x01, 0xd3, 0x85, 0xc0, 0x75, 0xf1, 0xc3, 
                        0x00};

O'xshash maqolalar

C# : dll tayyorlash C# va assembler C# Dasturlash Tili ref va out metod parametrlari, ularning farqi, ishlatilishi C# C#. Nomlanishlar