Created
January 19, 2016 11:42
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解锁vba
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You can try this direct VBA approach which doesn't require HEX editing. It will work for any files (*.xls, *.xlsm, *.xlam ...). | |
Tested and works on | |
Excel 2007 | |
Excel 2010 | |
Excel 2013 - 32 bit version. | |
Excel 2016 - 32 bit version. | |
Looking for 64 bit version? See http://stackoverflow.com/a/31005696/4342479 | |
how it works | |
I will try my best to explain how it works - please excuse my english. | |
Excel will call a system function to create the password dialog box. | |
If user enters the right password and click OK, this function returns 1. If user enters the wrong password or click Cancel, this function returns 0. | |
After the dialog box is closed, Excel checks the returned value of the system function | |
if this value is 1, Excel will "think" that the password is right, hence the locked VBA project will be opened. | |
The code below swaps the memory of the original function used to display the password dialog with a user defined function that will always return 1 when being called. | |
using the code | |
Open the file(s) that contain your locked VBA Projects | |
Create a new xlsm file and store this code in Module1 | |
code credited to Siwtom (nick name), a Vietnamese developer | |
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. |
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