Option Explicit

Private Const PROCESS_ALL_ACCESS As Long = &H1F0FFF

Private Declare Function GetAsyncKeyState Lib "user32.dll" ( _
        ByVal vKey As Long) As Integer

Private Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" ( _
        ByVal lpClassName As String, _
        ByVal lpWindowName As String) As Long

Private Declare Function GetWindowThreadProcessId Lib "user32.dll" ( _
        ByVal hwnd As Long, _
        ByRef lpdwProcessId As Long) As Long
        
Private Declare Function OpenProcess Lib "kernel32.dll" ( _
        ByVal dwDesiredAccess As Long, _
        ByVal bInheritHandle As Long, _
        ByVal dwProcessId As Long) As Long
        
Private Declare Function WriteProcessMemory Lib "kernel32.dll" ( _
        ByVal hProcess As Long, _
        ByRef lpBaseAddress As Any, _
        ByRef lpBuffer As Any, _
        ByVal nSize As Long, _
        ByRef lpNumberOfBytesWritten As Long) As Long

Private Declare Function CloseHandle Lib "kernel32.dll" ( _
        ByVal hObject As Long) As Long
        
Private Sub CambiarNombre(Nombre As String)
Dim wHandle As Long
Dim pId     As Long
Dim pHandle As Long

wHandle = FindWindow(vbNullString, "Counter-Strike")

If wHandle = 0 Then Exit Sub

GetWindowThreadProcessId wHandle, pId

pHandle = OpenProcess(PROCESS_ALL_ACCESS, False, pId)

If pHandle = 0 Then Exit Sub

WriteProcessMemory pHandle, &H2F4DC28, StrPtr(Nombre), LenB(Nombre), 0&

CloseHandle pHandle
End Sub

Private Sub Form_Load()
Timer1.Enabled = True
End Sub

Private Sub Timer1_Timer()
If GetAsyncKeyState(vbKeyF5) Then CambiarNombre ("NADER")
End Sub