How to Read and Write to the Process Memory
Create new Class
This is The MemoryWrite / Read Class
using System;
using System.Diagnostics;
using System.Management;
using System.Runtime.InteropServices;
namespace ProcessMemoryReaderLib
{
/// <summary>
/// </summary>
class ProcessMemoryReaderApi
{
[Flags]
public enum ProcessAccessType
{
PROCESS_TERMINATE = (0x0001),
PROCESS_CREATE_THREAD = (0x0002),
PROCESS_SET_SESSIONID = (0x0004),
PROCESS_VM_OPERATION = (0x0008),
PROCESS_VM_READ = (0x0010),
PROCESS_VM_WRITE = (0x0020),
PROCESS_DUP_HANDLE = (0x0040),
PROCESS_CREATE_PROCESS = (0x0080),
PROCESS_SET_QUOTA = (0x0100),
PROCESS_SET_INFORMATION = (0x0200),
PROCESS_QUERY_INFORMATION = (0x0400)
}
[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(UInt32 dwDesiredAccess, Int32 bInheritHandle, UInt32 dwProcessId);
[DllImport("kernel32.dll")]
public static extern Int32 CloseHandle(IntPtr hObject);
[DllImport("kernel32.dll")]
public static extern Int32 ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesRead);
[DllImport("kernel32.dll")]
public static extern Int32 WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesWritten);
}
public class ProcessMemoryReader
{
public ProcessMemoryReader()
{
}
/// <summary>
/// </summary>
public Process ReadProcess
{
get
{
return m_ReadProcess;
}
set
{
m_ReadProcess = value;
}
}
private Process m_ReadProcess = null;
private IntPtr m_hProcess = IntPtr.Zero;
public void OpenProcess()
{
ProcessMemoryReaderApi.ProcessAccessType access;
access = ProcessMemoryReaderApi.ProcessAccessType.PROCESS_V M_READ
| ProcessMemoryReaderApi.ProcessAccessType.PROCESS_V M_WRITE
| ProcessMemoryReaderApi.ProcessAccessType.PROCESS_V M_OPERATION;
m_hProcess = ProcessMemoryReaderApi.OpenProcess((uint)access, 1, (uint)m_ReadProcess.Id);
}
public void CloseHandle()
{
int iRetValue;
iRetValue = ProcessMemoryReaderApi.CloseHandle(m_hProcess);
if (iRetValue == 0)
throw new Exception("closehandle failed");
}
public byte[] ReadProcessMemory(IntPtr MemoryAddress, uint bytesToRead, out int bytesRead)
{
byte[] buffer = new byte[bytesToRead];
IntPtr ptrBytesRead;
ProcessMemoryReaderApi.ReadProcessMemory(m_hProces s, MemoryAddress, buffer, bytesToRead, out ptrBytesRead);
bytesRead = ptrBytesRead.ToInt32();
return buffer;
}
public void WriteProcessMemory(IntPtr MemoryAddress, byte[] bytesToWrite, out int bytesWritten)
{
IntPtr ptrBytesWritten;
ProcessMemoryReaderApi.WriteProcessMemory(m_hProce ss, MemoryAddress, bytesToWrite, (uint)bytesToWrite.Length, out ptrBytesWritten);
bytesWritten = ptrBytesWritten.ToInt32();
}
}
}
Now Go to your Form
After:
Code:
public partial class FormName : Form
{
add this
Code:
ProcessMemoryReaderLib.ProcessMemoryReader preader = new ProcessMemoryReaderLib.ProcessMemoryReader();
Now you can Write the Memory Like This
Code:
System.Diagnostics.Process[] MS = System.Diagnostics.Process.GetProcessesByName("SomeGame");
if (MS.Length != 0)
{
preader.ReadProcess = MS[0];
preader.OpenProcess();
int thosewrote;
byte[] vals = { 0x0F, 0x84, 0xF1, 0x20, 0x00, 0x00 };
preader.WriteProcessMemory((IntPtr)0x009343FC, vals , out thosewrote);
}
Bytes to Write = 0F & 84 & F1 & 20 & 00 & 00
The Address that will it be wrote to = 009343FC
