有没有办法在Excel VBA项目中破解密码？ [英] Is there a way to crack the password on an Excel VBA Project?

问题描述

我被要求更新一些Excel 2003宏，但VBA项目受密码保护，似乎缺少文档...没有人知道密码。

有没有办法在VBA项目中删除或破解密码？

解决方案

你可以试试这个直接 VBA 方法，不需要HEX编辑。它将适用于任何文件（* .xls，* .xlsm，* .xlam ...）。

测试和工作在

Excel 2007

Excel 2010

Excel 2013 - 32位版本。

Excel 2016 - 32位版本。

寻找64位版本？请参阅 https://stackoverflow.com/a/31005696/4342479

它的工作原理

我会尽力解释它是如何工作的 - 请原谅我的英文。

1. Excel将调用系统函数创建密码对话框。


2. 如果用户输入正确的密码并单击确定，此功能返回1.如果用户输入错误的密码或单击取消，该功能将返回0。


3. 关闭对话框后，Excel将检查系统函数的返回值


4. 如果此值为1，Excel将认为该密码是正确的，因此锁定的VBA项目将被打开。


5. 下面的代码交换用于显示密码对话框的原始函数的内存，用户定义的函数将在调用时始终返回1。

使用代码

1. 打开包含已锁定的VBA项目的文件



2. 创建一个新的xlsm文件，并将此代码存储在 Module1 / p>
   
   

   代码记入Siwtom（昵称），越南开发商

     Option Explicit 
    
    Private Const PAGE_EXECUTE_READWRITE =& H40 
    
   私有声明Sub MoveMemory Libkernel32别名RtlMoveMemory _ 
   （目的地长，源长，ByVal长度）
    
   私有声明函数VirtualProtect Libkernel32（lpAddress As Long，_ 
    ByVal dwSize As Long， ByVal flNewProtect As Long，lpflOldProtect As Long $ a 
    
   私有声明函数GetModuleHandleA Libkernel32（ByVal lpModuleName As String）As Long 
    
   私有声明函数GetProcAddress Libkernel32 （ByVal hModule As Long，_ 
    ByVal lpProcName As String）As Long 
    
   私有声明函数DialogBoxParam Libuser32别名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到5）As Byte 
    Dim OriginBytes（0到5）As Byte 
    Dim pFunc As Long 
    Dim Flag As Boolean 
    
   私有函数GetPtr（ByVal Value As Long）As Long 
    GetPtr = Value 
   结束函数
    
    Public Sub RecoverBytes（） 
   如果Flag Then MoveMemory ByVal pFunc，ByVal VarPtr（OriginBytes（0）），6 
    End Sub 
    
   公共函数Hook（）As Boolean 
    Dim TmpBytes（0到5）As Byte 
    Dim p As Long 
    Dim OriginProtect As Long 
    
    Hook = False 
    
    pFunc = GetProcAddress（GetModuleHandleA（user32.dll ），DialogBoxParamA）
    
    
   如果VirtualProtect（ByVal pFunc，6，PAGE_EXECUTE_READWRITE，OriginProtect） 0然后
    
    MoveMemory ByVal VarPtr（TmpBytes（0）），ByVal pFunc，6 
   如果TmpBytes（0） & H68然后
    
    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 
    
   私有函数MyDialogBoxParam（ByVal hInstance As Long，_ 
    ByVal pTemplateName As Long，ByVal hWndParent As Long，_ 
    ByVal lpDialogFunc As Long，ByVal dwInitParam As Long）As Integer 
   如果pTemplateName = 4070然后
    MyDialogBoxParam = 1 
    Else 
    RecoverBytes 
    MyDialogBoxParam = DialogBoxParam（hInstance，pTemplateName，_ 
    hWndParent，lpDialogFunc，dwInitParam）
    H ook 
   如果
   结束函数
     




3. 将此代码粘贴到 Module2 并运行

     Sub unprotected（）
   如果Hook Then 
    MsgBox VBA项目无保护！，vb信息*****
   如果
    End Sub 
     




4. 回到您的VBA项目，享受。

I've been asked to update some Excel 2003 macros, but the VBA projects are password protected, and it seems there's a lack of documentation... no-one knows the passwords.

Is there a way of removing or cracking the password on a VBA project?

解决方案

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 https://stackoverflow.com/a/31005696/4342479

how it works

I will try my best to explain how it works - please excuse my english.

1. Excel will call a system function to create the password dialog box.
2. 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.
3. After the dialog box is closed, Excel checks the returned value of the system function
4. if this value is 1, Excel will "think" that the password is right, hence the locked VBA project will be opened.
5. 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

1. Open the file(s) that contain your locked VBA Projects

2. 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
   

3. Paste this code in Module2 and run it

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

4. Come back to your VBA Projects and enjoy.

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