[原]VC++信息安全编程（8）分析程序实现自我删除

winston

很多时候，我们制作自动安装程序，安装完成以后自动删除，软件仅仅安装一次就自动删除，以保护软件知识产权。
软件自动删除的代码是如何实现的呢，我们来看下

2. #ifdef _DEBUG
3. #define new DEBUG_NEW
4. #undef THIS_FILE
5. static char THIS_FILE[] = __FILE__;
6. #endif
8. /////////////////////////////////////////////////////////////////////////////
9. // CSelfDelDlg dialog
11. CSelfDelDlg::CSelfDelDlg(CWnd* pParent /*=NULL*/)
12.         : CDialog(CSelfDelDlg::IDD, pParent)
13. {
14.         //{{AFX_DATA_INIT(CSelfDelDlg)
15.                 // NOTE: the ClassWizard will add member initialization here
16.         //}}AFX_DATA_INIT
17.         // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
18.         m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
19. }
21. void CSelfDelDlg::DoDataExchange(CDataExchange* pDX)
22. {
23.         CDialog::DoDataExchange(pDX);
24.         //{{AFX_DATA_MAP(CSelfDelDlg)
25.                 // NOTE: the ClassWizard will add DDX and DDV calls here
26.         //}}AFX_DATA_MAP
27. }
29. BEGIN_MESSAGE_MAP(CSelfDelDlg, CDialog)
30.         //{{AFX_MSG_MAP(CSelfDelDlg)
31.         ON_WM_PAINT()
32.         ON_WM_QUERYDRAGICON()
33.         ON_BN_CLICKED(IDC_Delete_1, OnDelete1)
34.         ON_BN_CLICKED(IDC_Delete_2, OnDelete2)
35.         ON_BN_CLICKED(IDC_Any, OnAny)
36.         //}}AFX_MSG_MAP
37. END_MESSAGE_MAP()
39. /////////////////////////////////////////////////////////////////////////////
40. // CSelfDelDlg message handlers
42. BOOL CSelfDelDlg::OnInitDialog()
43. {
44.         CDialog::OnInitDialog();
46.         // Set the icon for this dialog.  The framework does this automatically
47.         //  when the application's main window is not a dialog
48.         SetIcon(m_hIcon, TRUE);                        // Set big icon
49.         SetIcon(m_hIcon, FALSE);                // Set small icon
50.        
51.         // TODO: Add extra initialization here
52.        
53.         return TRUE;  // return TRUE  unless you set the focus to a control
54. }
56. // If you add a minimize button to your dialog, you will need the code below
57. //  to draw the icon.  For MFC applications using the document/view model,
58. //  this is automatically done for you by the framework.
60. void CSelfDelDlg::OnPaint()
61. {
62.         if (IsIconic())
63.         {
64.                 CPaintDC dc(this); // device context for painting
66.                 SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
68.                 // Center icon in client rectangle
69.                 int cxIcon = GetSystemMetrics(SM_CXICON);
70.                 int cyIcon = GetSystemMetrics(SM_CYICON);
71.                 CRect rect;
72.                 GetClientRect(&rect);
73.                 int x = (rect.Width() - cxIcon + 1) / 2;
74.                 int y = (rect.Height() - cyIcon + 1) / 2;
76.                 // Draw the icon
77.                 dc.DrawIcon(x, y, m_hIcon);
78.         }
79.         else
80.         {
81.                 CDialog::OnPaint();
82.         }
83. }
85. // The system calls this to obtain the cursor to display while the user drags
86. //  the minimized window.
87. HCURSOR CSelfDelDlg::OnQueryDragIcon()
88. {
89.         return (HCURSOR) m_hIcon;
90. }
92. void CSelfDelDlg::OnDelete1()
93. {
94. /*char name[256];
95. char *ptr=::GetCommandLine();       
96. strncpy(name,ptr,255);
97. for(int i=1;i<256;i++)if(name[i]=='"')break;
98. char path[256];
99. for(int j=0;j<i;
100. */
101. HMODULE module = GetModuleHandle(0);
102. CHAR buf[MAX_PATH];
103. GetModuleFileName(module, buf, sizeof(buf));
104. if(DeleteFile(buf))AfxMessageBox("自我删除成功!");
105. else MessageBox("自我删除失败!","直接用 DeleteFile",MB_OK|MB_ICONEXCLAMATION);
106. }
108. void CSelfDelDlg::OnDelete2()
109. {
110.   HMODULE module = GetModuleHandle(0);
111.   CHAR buf[MAX_PATH];
112.   GetModuleFileName(module, buf, sizeof buf);
113.   CloseHandle(HANDLE(4));
114. __asm {
115.    lea eax, buf
116.    push 0
117.    push 0
118.   push eax
119.   push ExitProcess
120.   push module
121.   push DeleteFile
122.   push UnmapViewOfFile
123.   ret
124. }
125. }
127. void CSelfDelDlg::OnAny()
128. {
129. OSVERSIONINFO ver;
130. ver.dwOSVersionInfoSize=sizeof(ver);
131. GetVersionEx(&ver);       
132. //if(ver.dwPlatformId==VER_PLATFORM_WIN32_WINDOWS){//Is win95 or 98
133.   AfxMessageBox("98");
134.   HMODULE h = GetModuleHandle(0);
135.   CHAR buf[MAX_PATH];
136.   GetModuleFileName(h, buf, sizeof buf);
137.   FILE *fp;
138.   if(!(fp=fopen("c:\\anyexe.bat","wb")))return;
139.   CString in;
140.   in="del ";
141.   in+=buf;
143.   in+="\r\n";
144.   in+="del ";
145.   in+="c:\\anyexe.bat";
146.   fwrite(in.GetBuffer(0),in.GetLength(),1,fp);
147.   fclose(fp);
148.   AfxMessageBox(in);
149.   ::ShellExecute(0,NULL,"command.exe","c:\\anyexe.bat",NULL,0);
150. /*
151. }
152. else if(ver.dwPlatformId==VER_PLATFORM_WIN32_NT)//Is Nt or 2000
153. {
155. //AfxMessageBox("2000");
156.   HMODULE module = GetModuleHandle(0);
157.   CHAR buf[MAX_PATH];
158.   GetModuleFileName(module, buf, sizeof buf);
159.   CloseHandle(HANDLE(4));
160. __asm {
161.    lea eax, buf
162.    push 0
163.    push 0
164.   push eax
165.   push ExitProcess
166.   push module
167.   push DeleteFile
168.   push UnmapViewOfFile
169.   ret
170. }
171. */
172. //}
173. //else{
175. //}
177. }

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作者：yincheng01 发表于2011-12-14 23:42:51 原文链接