破解Windows屏幕保护密码
2008-02-23 06:54:36来源:互联网 阅读 ()
懂得其加密原理后,便不难编程破解我的屏幕保护密码(即上网密码)了。本人用VB6.0编制了一读取注册表中ScrrenSave_Data值的函数GetBinaryValue(Entry As String),读出其值为31 43 41 33 33 43 35 35 33 34 32 31 00,去掉其结束标志00,把余下字节转换为对应的ASCII字符,并把每两个字符组成一16进制数:1C A3 3C 55 34 21,显然,密码为6位,将其与前6字节密钥逐一异或后便得出密码的ASCII码(16进制值):54 4D 4A 48 53 48,对应的密码明文为TMJHSH,破解成功!用它拔号一试,呵,立刻传来Modem欢快的叫声。
附VB源程序:(程序中使用了窗体Form1,文本框Text1,命令按钮Command1)
1、窗体代码:
Option Explicit
Dim Cryptograph As String
Dim i As Integer
Dim j As Integer
Dim k As Integer
Dim CryptographStr(32) As Integer
Dim PWstr As String
Dim PassWord As String
Private Sub Command1_Click()
PWstr = “"
PassWord = “"
Text1.Text =“"
Cryptograph = GetBinaryValue(“ScreenSave_Data")
k = Len(Cryptograph)
For j = 1 To k - 1
For i = 32 To 126
If Mid(Cryptograph, j, 1) = Chr(i) Then
CryptographStr(j) = i
End If
Next i
Next j
i = (k - 1) / 2 '密码位数为(h-1)/2,根据位数选择解密过程。
Select Case i
Case 16
GoTo 16
Case 15
GoTo 15
Case 14
GoTo 14
Case 13
GoTo 13
Case 12
GoTo 12
Case 11
GoTo 11
Case 10
GoTo 10
Case 9
GoTo 9
Case 8
GoTo 8
Case 7
GoTo 7
Case 6
GoTo 6
Case 5
GoTo 5
Case 4
GoTo 4
Case 3
GoTo 3
Case 2
GoTo 2
Case 1
GoTo 1
Case Else
End
End Select
16: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(31)) & Chr(CryptographStr(32))) Xor &H5F)
15: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(29)) & Chr(CryptographStr(30))) Xor &H97)
14: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(27)) & Chr(CryptographStr(28))) Xor &H95)
13: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(25)) & Chr(CryptographStr(26))) Xor &H54)
12: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(23)) & Chr(CryptographStr(24))) Xor &HF8)
11: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(21)) & Chr(CryptographStr(22))) Xor &H47)
10: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(19)) & Chr(CryptographStr(20))) Xor &H8C)
9: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(17)) & Chr(CryptographStr(18))) Xor &H7A)
8: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(15)) & Chr(CryptographStr(16))) Xor &H1B)
7: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(13)) & Chr(CryptographStr(14))) Xor &HA1)
6: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(11)) & Chr(CryptographStr(12))) Xor &H69)
5: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(9)) & Chr(CryptographStr(10))) Xor &H67)
4: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(7)) & Chr(CryptographStr(8))) Xor &H1D)
3: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(5)) & Chr(CryptographStr(6))) Xor &H76)
2: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(3)) & Chr(CryptographStr(4))) Xor &HEE)
1: PWstr = PWstr & Chr((“&H" & Chr(CryptographStr(1)) & Chr(CryptographStr(2))) Xor &H48)
For i = i To 1 Step -1 '所得PWstr的值为密码的倒序列,将其倒置便得出密码。
PassWord = PassWord & Mid(PWstr, i, 1)
Next i
Text1.Text = PassWord '在文本框内显示密码。
End Sub
2、模块代码:
Option Explicit
Const ERROR_SUCCESS = 0&
Const ERROR_BADDB = 1009&
Const ERROR_BADKEY = 1010&
Const REG_EXPAND_SZ = 2&
Const REG_BINARY = 3&
Const KEY_QUERY_VALUE = &H1&
Const KEY_ENUMERATE_SUB_KEYS = &H8&
Const KEY_NOTIFY = &H10&
Const READ_CONTROL = &H20000
Const STANDARD_RIGHTS_READ = READ_CONTROL
Const KEY_READ = STANDARD_RIGHTS_READ Or KEY_QUERY_VALUE Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY
Const HKEY_CURRENT_USER = &H80000001
Dim hKey As Long, MainKeyHandle As Long
Dim rtn As Long, lBuffer As Long, sBuffer As String, SubKey As String
Dim lBufferSize As Long
Declare Function RegOpenKeyEx Lib “advapi32.dll" Alias “RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As Long) As Long
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- VB编程破解Windows屏幕保护密码 2008-02-23
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