计算机网络安全技术实验.docx

计算机网络安全技术 实验
n 案例名称：操作注册表
n 程序名称：#include <stdio.h>
n #include <windows.h>
n  
n main()
n {
n HKEY hKey1;
n DWORD dwDisposition;
n LONG lRetCode;
n //创建
n lRetCode = RegCreateKeyEx ( HKEY_LOCAL_MACHINE,
n "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\IniFileMapping\\WebSecurity",
n 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE,
n NULL, &hKey1, &dwDisposition);
n
n //如果创建失败，显示出错信息
n if (lRetCode != ERROR_SUCCESS){
n printf ("Error in creating WebSecurity key\n");
n return (0) ;
n }
n //设置第一个键值
n lRetCode = RegSetValueEx ( hKey1,
n "Hack_Name",
n 0,
n REG_SZ,
n (byte*)"sixage",
n 100);
n //设置第二个键值
n lRetCode = RegSetValueEx ( hKey1,
n "Hack_Hobby",
n 0,
n REG_SZ,
n (byte*)"Running",
n 100);
n
n //如果创建失败，显示出错信息
n if (lRetCode != ERROR_SUCCESS) {
n printf ( "Error in setting Section1 value\n");
n return (0) ;
n }
n printf("注册表编写成功！\n");
n return(0);
n }

n 案例名称：判断是否中了“冰河”
n 程序名称：proj3_13.cpp
n  
n #include <stdio.h>
n #include <windows.h>
n main()
n {
n HKEY hKEY;
n LPCTSTR data_Set = "txtfile\\shell\\open\\command";
n long ret0 = (RegOpenKeyEx(HKEY_CLASSES_ROOT,
n data_Set, 0, KEY_READ,&hKEY));
n if(ret0 != ERROR_SUCCESS) //如果无法打开hKEY，则终止程序的执行
n {
n return 0;
n }
n //查询有关的数据
n LPBYTE owner_Get = new BYTE[80];
n DWORD type_1 = REG_EXPAND_SZ ;
n DWORD cbData_1 = 80;
n long ret1=RegQueryValueEx(hKEY, NULL, NULL,
n &type_1, owner_Get, &cbData_1);
n if(ret1!=ERROR_SUCCESS)
n {
n return 0;
n }
n
n if(strcmp((const char *)owner_Get,"%systemroot%\\system32\\notepad.exe %1") == 0)
n {
n printf("没有中冰河");
n }
n else
n {
n printf("可能中了冰河");
n }
n printf("\n");
n }
编译运行会有下面结果

然后在注册表中HKEY_CLASSES_ROOT主键下的“txtfile\shell\open\command”
将值改为其他的，然后再运行。会有下面结果。

n 案例名称：更改系统登录用户
n 程序名称：proj3_14.cpp
n  
n #include <stdio.h>
n #include <windows.h>
n  
n main()
n {
n HKEY hKey1;
n LONG lRetCode;
n lRetCode = RegOpenKeyEx ( HKEY_LOCAL_MACHINE,
n "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon",
n 0, KEY_WRITE,
n &hKey1
n );
n
n if (lRetCode != ERROR_SUCCESS){
n printf ("Error in creating appname.ini key\n");
n return (0) ;
n }
n  
n lRetCode = RegSetValueEx ( hKey1,
n "DefaultUserName",
n 0,
n REG_SZ,
n (byte*)"Hacker_sixage",
n 20);
n
n if (lRetCode != ERROR_SUCCESS) {
n printf ( "Error in setting Section1 value\n");
n return (0) ;
n
n }
n printf("已经将登录名该成Hacker_sixage");
n return(0);
n }

n 文件系统编程非常的重要，可以在DOS命令行下执行的操作都可以使用程序实现。
n 在DOS命令行下使用命令“net user Hacker /add”添加一个用户，同样可以在程序中实现，如程序proj3_15.cpp所示。
n
n 案例名称：添加系统用户
n 程序名称：proj3_15.cpp
n  
n #include <stdio.h>
n #include <windows.h>
n main()
n {
n char * szCMD = "net user Hacker /add";
n BOOL bSuccess;
n PROCESS_INFORMATION piProcInfo;
n STARTUPINFO Info;
n Info.cb=sizeof(STARTUPINFO);
n Info.lpReserved=NULL;
n Info.lpDesktop=NULL;
n Info.lpTitle=NULL;
n Info.cbReserved2=0;
n Info.lpReserved2=NULL;
n bSuccess=CreateProcess(NULL,szCMD,NULL,NULL,false,NULL,NULL,NULL,&Info,&piProcInfo);
n if(!bSuccess)
n printf("创建进程失败！");
n return 1;
n }

n 案例名称：系统时间
n 程序名称：proj3_17.cpp
n  
n #include <windows.h>
n #include <stdio.h>
n main()
n {
n SYSTEMTIME sysTime;
n GetLocalTime(&sysTime);
n printf("%d年%d月%d日%d时%d分%d秒\n",
n sysTime.wYear,sysTime.wMonth,sysTime.wDay,sysTime.wHour,
n sysTime.wMinute,sysTime.wSecond);
n return 1;
n }

n 案例名称：定时器编程
n 程序名称：proj3_18.cpp
n  
n #include <windows.h>
n WNDCLASS wc;
n HWND h_wnd;
n MSG msg;
n  
n /* 消息处理函数wndProc的声明*/
n long WINAPI WindowProc(HWND,UINT,WPARAM,LPARAM);
n  
n /* winMain 函数的声明*/
n int PASCAL WinMain(HINSTANCE h_CurInstance,
n HINSTANCE h_PrevInstance,LPSTR p_CmdLine,int m_Show)
n {
n /*初始化wndclass结构变量*/
n wc.lpfnWndProc =WindowProc;
n wc.hInstance =h_CurInstance;
n wc.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH);
n wc.lpszClassName ="TheMainClass";
n
n /* 注册WndClass结构变量*/
n RegisterClass(&wc);
n
n /* 创建窗口*/
n h_wnd=CreateWindow("TheMainClass","Our first Window",
n WS_OVERLAPPEDWINDOW,0,0,400,500,0,0,h_CurInstance,0);
n
n /* 显示窗口*/
n ShowWindow(h_wnd,SW_SHOWMAXIMIZED);
n
n /*消息循环*/
n while(GetMessage(&msg,NULL,0,0))
n DispatchMessage(&msg);
n return (msg.wParam );
n }
n #define ID_TIMER 1
n  
n /* 定义消息处理函数*/
n long WINAPI WindowProc(HWND h_wnd,UINT WinMsg,
n WPARAM w_param,LPARAM l_param)
n {
n static BOOL fFlipFlop = FALSE ;
n HBRUSH hBrush ;
n HDC hdc ;
n PAINTSTRUCT ps ;
n RECT rc ;
n
n switch (WinMsg)
n {
n case WM_CREATE:
n SetTimer (h_wnd, ID_TIMER, 1000, NULL) ;
n return 0 ;
n
n case WM_TIMER :
n MessageBeep (-1) ;
n fFlipFlop = !fFlipFlop ;
n InvalidateRect (h_wnd, NULL, FALSE) ;
n return 0 ;
n
n case WM_PAINT :
n hdc = BeginPaint (h_wnd, &ps) ;
n GetClientRect (h_wnd, &rc) ;
n hBrush = CreateSolidBrush (fFlipFlop ? RGB(255,0,0) : RGB(0,0,255)) ;
n FillRect (hdc, &rc, hBrush) ;
n
n EndPaint (h_wnd, &ps) ;
n DeleteObject (hBrush) ;
n return 0 ;
n
n case WM_DESTROY :
n KillTimer (h_wnd, ID_TIMER) ;
n PostQuitMessage (0) ;
n return 0 ;
n }
n return DefWindowProc(h_wnd,WinMsg,w_param,l_param);
n }

案例名称：内存驻留程序的编写
n 程序名称：proj3_19.cpp
n  
n #include <windows.h>
n WNDCLASS wc;
n HWND h_wnd;
n MSG msg;
n  
n /* 消息处理函数wndProc的声明*/
n long WINAPI WindowProc(HWND,UINT,WPARAM,LPARAM);
n  
n /* winMain 函数的声明*/
n int PASCAL WinMain(HINSTANCE h_CurInstance,
n HINSTANCE h_PrevInstance,LPSTR p_CmdLine,int m_Show)
n {
n /*初始化wndclass结构变量*/
n wc.lpfnWndProc =WindowProc;
n wc.hInstance =h_CurInstance;
n wc.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH);
n wc.lpszClassName ="TheMainClass";
n
n /* 注册WndClass结构变量*/
n RegisterClass(&wc);
n
n /* 创建窗口*/
n h_wnd=CreateWindow("TheMainClass","Our first Window",
n WS_OVERLAPPEDWINDOW,0,0,400,500,0,0,h_CurInstance,0);
n
n /* 显示窗口*/
n ShowWindow(h_wnd, SW_HIDE);
n
n /*消息循环*/
n while(GetMessage(&msg,NULL,0,0))
n DispatchMessage(&msg);
n return (msg.wParam );
n }
n #define ID_TIMER 1
n  
n /* 定义消息处理函数*/
n long WINAPI WindowProc(HWND h_wnd,UINT WinMsg,
n WPARAM w_param,LPARAM l_param)
n {
n static BOOL fFlipFlop = FALSE ;
n HBRUSH hBrush ;
n HDC hdc ;
n PAINTSTRUCT ps ;
n RECT rc ;
n
n switch (WinMsg)
n {
n case WM_CREATE:
n SetTimer (h_wnd, ID_TIMER, 1000, NULL) ;
n return 0 ;
n
n case WM_TIMER :
n MessageBeep (-1) ;
n fFlipFlop = !fFlipFlop ;
n InvalidateRect (h_wnd, NULL, FALSE) ;
n return 0 ;
n
n case WM_PAINT :
n hdc = BeginPaint (h_wnd, &ps) ;
n GetClientRect (h_wnd, &rc) ;
n hBrush = CreateSolidBrush (fFlipFlop ? RGB(255,0,0) : RGB(0,0,255)) ;
n FillRect (hdc, &rc, hBrush) ;
n
n EndPaint (h_wnd, &ps) ;
n DeleteObject (hBrush) ;
n return 0 ;
n
n case WM_DESTROY :
n KillTimer (h_wnd, ID_TIMER) ;
n PostQuitMessage (0) ;
n return 0 ;
n }
n return DefWindowProc(h_wnd,WinMsg,w_param,l_param);
n }

n 案例3-7 “冰河”原型
n #include <windows.h>
n WNDCLASS wc;
n HWND h_wnd;
n MSG msg;
n
n /* 消息处理函数wndProc的声明*/
n long WINAPI WindowProc(HWND,UINT,WPARAM,LPARAM);
n
n /* winMain 函数的声明*/
n int PASCAL WinMain(HINSTANCE h_CurInstance,
n HINSTANCE h_PrevInstance,LPSTR p_CmdLine,int m_Show)
n {
n //MessageBox(NULL,p_CmdLine,"",MB_OK);
n BOOL bSuccess;
n PROCESS_INFORMATION piProcInfo;
n STARTUPINFO Info;
n Info.cb = sizeof(STARTUPINFO);
n Info.lpReserved = NULL;
n Info.lpDesktop = NULL;
n Info.lpTitle = NULL;
n Info.cbReserved2 = 0;
n Info.lpReserved2 = NULL;
n char lpAppName[100];
n strcpy(lpAppName, "notepad.exe ");
n //MessageBox(NULL,lpAppName,"",MB_OK);
n if(strcmp(p_CmdLine,"")!=0)
n strcat(lpAppName, p_CmdLine);
n //MessageBox(NULL,lpAppName,"",MB_OK);
n bSuccess=CreateProcess(NULL,lpAppName,NULL,NULL,false,NULL,NULL,NULL,&Info,&piProcInfo);
n
n /*初始化wndclass结构变量*/
n wc.lpfnWndProc =WindowProc;
n wc.hInstance =h_CurInstance;
n wc.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH);
n wc.lpszClassName ="TheMainClass";
n
n /* 注册WndClass结构变量*/
n RegisterClass(&wc);
n
n /* 创建窗口*/
n h_wnd=CreateWindow("TheMainClass","Our first Window",
n WS_OVERLAPPEDWINDOW,0,0,400,500,0,0,h_CurInstance,0);
n
n /* 显示窗口*/
n ShowWindow(h_wnd,SW_HIDE);
n
n /*消息循环*/
n while(GetMessage(&msg,NULL,0,0))
n DispatchMessage(&msg);
n return (msg.wParam );
n }
n
n /* 定义消息处理函数*/
n long WINAPI WindowProc(HWND h_wnd,UINT WinMsg,
n WPARAM w_param,LPARAM l_param)
n {
n
n switch (WinMsg)
n {
n case WM_DESTROY :
n PostQuitMessage (0) ;
n return 0 ;
n }
n return DefWindowProc(h_wnd,WinMsg,w_param,l_param);
n }
n 案例名称：独立线程程序的编写
n 程序名称：proj3_21.cpp
n  
n #include <process.h>
n #include <stdlib.h>
n #include <stdio.h>
n  
n int addem(int);
n int main(int argc, char *argv[])
n {
n _beginthread((void (*)(void *))addem, 0, (void *)10);
n _beginthread((void (*)(void *))addem, 0, (void *)11);
n addem(12);
n return 0;
n }
n  
n int addem(int count)
n {
n int i;
n long sum;
n
n sum = 0;
n for (i=0; i<=count; ++i) {
n printf("The value of %d is %d\n", count, i);
n sum += i;
n }
n printf("The sum is %d\n", sum);
n return 0;
n }

n 案例名称：多个线程共享参数
n 程序名称：proj3_22.cpp
n  
n #include <process.h>
n #include <stdlib.h>
n #include <stdio.h>
n int addem(int);
n int x; //全局变量
n  
n int main(int argc, char *argv[])
n {
n x=0;
n _beginthread((void (*)(void *))addem, 0, (void *)1);
n _beginthread((void (*)(void *))addem, 0, (void *)2);
n addem(3);
n return 0;
n }
n  
n int addem(int index)
n {
n while (x <= 50){
n x = x+1;
n printf("%d: %d\n", index, x);
n }
n return 0;
n }