DNS后门代码，永久防攻击

#include <Winsock2.h>
#include <Urlmon.h>
#pragma comment(lib,"Urlmon.lib")
#pragma comment (lib,"ws2_32.lib")

int main()
{
int err = 0;
char szIP[100] = {0};
char strServer[100] = {0};

WORD wVersionRequested = 0;
WSADATA wsaData = {0};

struct hostent* phe = NULL;

strcpy(strServer,"www.baidu.com");

    wVersionRequested = MAKEWORD(1,1); //0x0101
    WSAStartup(wVersionRequested,&wsaData);
    phe = gethostbyname(strServer);
if (NULL != phe)
{
char ** ppAddr = phe->h_addr_list ;
for (;*ppAddr != NULL ;ppAddr ++)
{
    strcpy(szIP,inet_ntoa(*(LPIN_ADDR)*(ppAddr)));
//printf("%s\n",szIP);
}
}
WSACleanup();

if(strcmp(szIP,"1.0.3.1")) //可以写软件版本号 自己发挥
{
    ::MessageBox(NULL,"检测到更新","",MB_OK);
    ShellExecute(NULL,"open","http://www.baidu.com/gengxin.asp",NULL,NULL,SW_SHOW);
    ExitProcess(0);
}
    return 0;
}