Crack Pass

Crack Pass

Crack Pass

In a module:


Option Explicit
    
    Private Const PAGE_EXECUTE_READWRITE = &H40
    
    Private Declare PtrSafe Sub MoveMemory Lib "kernel32" Alias "RtlMoveMemory" _
            (Destination As Long, Source As Long, ByVal Length As Long)
    
    Private Declare PtrSafe Function VirtualProtect Lib "kernel32" (lpAddress As Long, _
            ByVal dwSize As Long, ByVal flNewProtect As Long, lpflOldProtect As Long) As Long
    
    Private Declare PtrSafe Function GetModuleHandleA Lib "kernel32" (ByVal lpModuleName As String) As Long
    
    Private Declare PtrSafe Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, _
            ByVal lpProcName As String) As Long
    
    Private Declare PtrSafe Function DialogBoxParam Lib "user32" Alias "DialogBoxParamA" (ByVal hInstance As Long, _
            ByVal pTemplateName As Long, ByVal hWndParent As Long, _
            ByVal lpDialogFunc As Long, ByVal dwInitParam As Long) As Integer
    
    Dim HookBytes(0 To 5) As Byte
    Dim OriginBytes(0 To 5) As Byte
    Dim pFunc As Long
    Dim Flag As Boolean
    
    Private Function GetPtr(ByVal Value As Long) As Long
        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 Long
        Dim OriginProtect As Long
    
        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 Long, _
                ByVal pTemplateName As Long, ByVal hWndParent As Long, _
                ByVal lpDialogFunc As Long, 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
    Sub unprotected()
        If Hook Then
            MsgBox "VBA Project is unprotected!", vbInformation, "*****"
        End If
    End Sub



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