https://blog.csdn.net/baidu_30129309/article/details/52244242
Private Sub VBAPassword()'你要解保护的Excel文件路径
Filename = Application.GetOpenFilename("Excel文件（*.xls & *.xla & *.xlt）,*.xls;*.xla;*.xlt", , "VBA破解")
If Dir(Filename) = "" Then
MsgBox "没找到相关文件,清重新设置。"
Exit Sub
Else
FileCopy Filename, Filename & ".bak" '备份文件。
End If
Dim GetData As String * 5
Open Filename For Binary As #1
Dim CMGs As Long
Dim DPBo As Long
For i = 1 To LOF(1)
Get #1, i, GetData
If GetData = "CMG=""" Then CMGs = i
If GetData = "[Host" Then DPBo = i - 2: Exit For
Next
If CMGs = 0 Then MsgBox "请先对VBA编码设置一个保护密码...", 32, "提示"
Exit Sub
End If
Dim St As String * 2
Dim s20 As String * 1 '取得一个0D0A十六进制字串
Get #1, CMGs - 2, St '取得一个20十六制字串
Get #1, DPBo + 16, s20
'替换加密部份机码
For i = CMGs To DPBo Step 2
Put #1, i, St
Next
'加入不配对符号
If (DPBo - CMGs) Mod 2 <> 0 Then
Put #1, DPBo + 1, s20
End If
MsgBox "文件解密成功......", 32, "提示"
Close #1
End Sub