まるで魔法！！ 本当は教えたくない！？簡単ExcelVBAのプロジェクトロックをさらっと解除する方法

Option Explicit

Sub unprotected()
    If Hook Then
        MsgBox "VBA Project is unprotected!", vbInformation, "*****"
    End If
End Sub

Option Explicit

Private Const PAGE_EXECUTE_READWRITE = &H40

Private Declare PtrSafe Sub MoveMemory Lib "kernel32" Alias "RtlMoveMemory" _
(Destination As LongPtr, Source As LongPtr, ByVal Length As LongPtr)

Private Declare PtrSafe Function VirtualProtect Lib "kernel32" (lpAddress As LongPtr, _
ByVal dwSize As LongPtr, ByVal flNewProtect As LongPtr, lpflOldProtect As LongPtr) As LongPtr

Private Declare PtrSafe Function GetModuleHandleA Lib "kernel32" (ByVal lpModuleName As String) As LongPtr

Private Declare PtrSafe Function GetProcAddress Lib "kernel32" (ByVal hModule As LongPtr, _
ByVal lpProcName As String) As LongPtr

Private Declare PtrSafe Function DialogBoxParam Lib "user32" Alias "DialogBoxParamA" (ByVal hInstance As LongPtr, _
ByVal pTemplateName As LongPtr, ByVal hWndParent As LongPtr, _
ByVal lpDialogFunc As LongPtr, ByVal dwInitParam As LongPtr) As Integer

Dim HookBytes(0 To 5) As Byte
Dim OriginBytes(0 To 5) As Byte
Dim pFunc As LongPtr
Dim Flag As Boolean

Private Function GetPtr(ByVal Value As LongPtr) As LongPtr
    GetPtr = Value
End Function

Public Sub RecoverBytes()
    If Flag Then MoveMemory ByVal pFunc, ByVal VarPtr(OriginBytes(0)), 6
End Sub

Public Function Hook() As Boolean
    Dim TmpBytes(0 To 5) As Byte
    Dim p As LongPtr
    Dim OriginProtect As LongPtr

    Hook = False

    pFunc = GetProcAddress(GetModuleHandleA("user32.dll"), "DialogBoxParamA")


    If VirtualProtect(ByVal pFunc, 6, PAGE_EXECUTE_READWRITE, OriginProtect) <> 0 Then

        MoveMemory ByVal VarPtr(TmpBytes(0)), ByVal pFunc, 6
        If TmpBytes(0) <> &H68 Then

            MoveMemory ByVal VarPtr(OriginBytes(0)), ByVal pFunc, 6

            p = GetPtr(AddressOf MyDialogBoxParam)

            HookBytes(0) = &H68
            MoveMemory ByVal VarPtr(HookBytes(1)), ByVal VarPtr(p), 4
            HookBytes(5) = &HC3

            MoveMemory ByVal pFunc, ByVal VarPtr(HookBytes(0)), 6
            Flag = True
            Hook = True
        End If
    End If
End Function

Private Function MyDialogBoxParam(ByVal hInstance As LongPtr, _
ByVal pTemplateName As LongPtr, ByVal hWndParent As LongPtr, _
ByVal lpDialogFunc As LongPtr, ByVal dwInitParam As LongPtr) As Integer

    If pTemplateName = 4070 Then
        MyDialogBoxParam = 1
    Else
        RecoverBytes
        MyDialogBoxParam = DialogBoxParam(hInstance, pTemplateName, _
                   hWndParent, lpDialogFunc, dwInitParam)
        Hook
    End If
End Function

Option Explicit
 
Private Const PAGE_EXECUTE_READWRITE = &H40
Private Declare PtrSafe Sub MoveMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As LongPtr, Source As LongPtr, ByVal Length As Long)
Private Declare PtrSafe Function VirtualProtect Lib "kernel32" (lpAddress As LongPtr, ByVal dwSize As Long, ByVal flNewProtect As Long, lpflOldProtect As LongPtr) As Long
Private Declare PtrSafe Function GetModuleHandleA Lib "kernel32" (ByVal lpModuleName As String) As LongPtr
Private Declare PtrSafe Function GetProcAddress Lib "kernel32" (ByVal hModule As LongPtr, ByVal lpProcName As String) As LongPtr
Private Declare PtrSafe Function DialogBoxParam Lib "user32" Alias "DialogBoxParamA" (ByVal hInstance As Long, ByVal pTemplateName As LongPtr, ByVal hWndParent As Long, ByVal lpDialogFunc As LongPtr, ByVal dwInitParam As Long) As Integer
Dim HookBytes(0 To 11) As Byte
Dim OriginBytes(0 To 11) As Byte
Dim pFunc As LongPtr
Dim Flag As Boolean
  
Private Function GetPtr(ByVal Value As LongPtr) As LongPtr
    GetPtr = Value
End Function
  
Private Sub RecoverBytes()
    If Flag Then MoveMemory ByVal pFunc, ByVal VarPtr(OriginBytes(0)), 12
End Sub
  
Private Function Hook() As Boolean
    Dim TmpBytes(0 To 11) As Byte
    Dim p As LongPtr
    Dim OriginProtect As LongPtr
  
    Hook = False
    pFunc = GetProcAddress(GetModuleHandleA("user32.dll"), "DialogBoxParamA")
    If VirtualProtect(ByVal pFunc, 12, PAGE_EXECUTE_READWRITE, OriginProtect) <> 0 Then
        MoveMemory ByVal VarPtr(TmpBytes(0)), ByVal pFunc, 12
        If TmpBytes(1) <> &HB8 Then
            MoveMemory ByVal VarPtr(OriginBytes(0)), ByVal pFunc, 12
            p = GetPtr(AddressOf MyDialogBoxParam)
            HookBytes(0) = &H48
            HookBytes(1) = &HB8
            MoveMemory ByVal VarPtr(HookBytes(2)), ByVal VarPtr(p), 8
            HookBytes(10) = &H50
            HookBytes(11) = &HC3
            MoveMemory ByVal pFunc, ByVal VarPtr(HookBytes(0)), 12
            Flag = True
            Hook = True
        End If
    End If
End Function
  
Private Function MyDialogBoxParam(ByVal hInstance As Long, ByVal pTemplateName As LongPtr, ByVal hWndParent As Long, ByVal lpDialogFunc As LongPtr, ByVal dwInitParam As Long) As Integer
    If pTemplateName = 4070 Then
        MyDialogBoxParam = 1
    Else
        RecoverBytes
        MyDialogBoxParam = DialogBoxParam(hInstance, pTemplateName, _
        hWndParent, lpDialogFunc, dwInitParam)
        Hook
    End If
End Function
 
Public Sub unprotected()
    If Hook Then
        MsgBox "VBA Project is unprotected!", vbInformation, "*****"
    End If
End Sub

function kagg_syntaxhighlighter_precode( $code, $atts, $tag ) {
    if ( 'code' === $tag ) {
        $code = wp_specialchars_decode( $code );
    }
    return $code;
}
add_filter( 'syntaxhighlighter_precode', 'kagg_syntaxhighlighter_precode', 10, 3 );