MS Office 2013 - VBA password security [duplicate] - vba

Question

This question already has answers here:
Is there a way to crack the password on an Excel VBA Project?
(25 answers)
Closed 7 years ago.
I am wondering about how safe is the VBA password on MS Office 2013.
I've searched online and there are a bunch of websites selling software to do it, is it reliable?
I want to develop some security around my office files that would depend on the VBA code inside, but if the vba code inside can be easily changed/seen it's non sense going that way.
Thanks

Answer 1

Using this answer as reference : Is there a way to crack the password on an Excel VBA Project?
Instead of doing all the Hex stuffs. You can try this. It will work for any files (*.xls, *.xlsm, *.xlam ...). Tested and works on Excel 2007, Excel 2010 and Excel 2013 - 32 bit version.
Open the file(s) that contain your locked VBA Projects
Create a new xlsm file and store this code in Module1
Option Explicit
Private Const PAGE_EXECUTE_READWRITE = &H40
Private Declare Sub MoveMemory Lib "kernel32" Alias "RtlMoveMemory" _
(Destination As Long, Source As Long, ByVal Length As Long)
Private Declare Function VirtualProtect Lib "kernel32" (lpAddress As Long, _
ByVal dwSize As Long, ByVal flNewProtect As Long, lpflOldProtect As Long) As Long
Private Declare Function GetModuleHandleA Lib "kernel32" (ByVal lpModuleName As String) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, _
ByVal lpProcName As String) As Long
Private Declare 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
Paste this code in Module2 and run it
Sub unprotected()
If Hook Then
MsgBox "VBA Project is unprotected!", vbInformation, "*****"
End If
End Sub
Come back to your VBA Projects and enjoy.
P/S: This code is credited to Siwtom (nick name), a vietnamese developer. You could turn this code into an Excel addin for frequently usage.