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DetourFunc.c
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DetourFunc.c
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/*++
Copyright (c) Bombs
Module Name:
DetourFunc.c
Author :Bombs
Time :2014-5-8 20:00:47
Abstract:
This module implements our functions that used for replacing
system functions(as is well-known hooks)
--*/
#include <ntifs.h>
#include "DetourFunc.h"
#include "HelperFunc.h"
#include "CommDef.h"
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, MySetInformationThread)
#pragma alloc_text(PAGE, MyClose)
#pragma alloc_text(PAGE, MyDuplicateObject)
#pragma alloc_text(PAGE, MyQueryObject)
#pragma alloc_text(PAGE, MyQuerySystemInformation)
#pragma alloc_text(PAGE, MyYieldExecution)
#pragma alloc_text(PAGE, MyOpenProcess)
#pragma alloc_text(PAGE, MyOpenThread)
#pragma alloc_text(PAGE, MySetContextThread)
#pragma alloc_text(PAGE, MyQueryInformationProcess)
#endif
//
// Global variable
//
PLIST_NODE g_pProcInfo = NULL;
ULONG g_ulDr6 = 0;
LARGE_INTEGER g_liReg1DBValue = {0};
PLARGE_INTEGER g_pliReg1DB = &g_liReg1DBValue;
LARGE_INTEGER g_liReg1DCValue = {0};
PLARGE_INTEGER g_pliReg1DC = &g_liReg1DCValue;
ULONG g_ulIsJustRet = 0;
BOOLEAN MyUserPostMessage(ULONG hWnd, ULONG Msg, ULONG wParam, ULONG lParam)
/*++
Routine Description:
Disable BROADCAST Message
--*/
{
BOOLEAN bRet = TRUE;
if( hWnd != 0xFFFF /*HWND_BROADCAST*/)
{
bRet = pfOrigUserPostMessage(hWnd, Msg, wParam, lParam);
}
return bRet;
}
NTSTATUS __stdcall MySetInformationThread(HANDLE ThreadHandle,
ULONG ThreadInformationClass,
PVOID ThreadInformation,
ULONG ThreadInformationLength)
/*++
Routine Description:
check if ThreadInformationClass equals ThreadHideFromDebugger, if it is,
just return.
--*/
{
NTSTATUS status;
PVOID Object;
status = ObReferenceObjectByHandle(ThreadHandle, GENERIC_READ, 0, KernelMode, &Object, NULL);
if(NT_SUCCESS(status))
{
ObDereferenceObject(Object);
}
if(ThreadInformationClass != ThreadHideFromDebugger)
{
status = pfOrigSetInformationThread(ThreadHandle, ThreadInformationClass,
ThreadInformation, ThreadInformationLength);
}
return status;
}
NTSTATUS __stdcall MyUserBuildHwndList(
HANDLE hDesktop,
HANDLE hWndParent,
ULONG bEnumChildren,
ULONG dwThreadId,
ULONG lParam,
HANDLE * pWnd,
ULONG * pBufSize)
/*++
Routine Description:
Get rid of the OD hwnds from the pWnd list
--*/
{
NTSTATUS status = STATUS_SUCCESS;
BOOLEAN bPass = TRUE;
ULONG ulProcId;
PEPROCESS pEProcess = NULL;
ULONG i = 0, j = 0;
do
{
if(g_dwIsHidenWindow == FALSE || IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
break;
}
if(bEnumChildren == 1)
{
ulProcId = pfOrigUserQueryWindow(hWndParent, 0);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
bPass = FALSE;
}
ObDereferenceObject(pEProcess);
}
}
if(bPass == FALSE)
{
break;
}
status = pfOrigUserBuildHwndList(hDesktop, hWndParent, bEnumChildren,
dwThreadId, lParam, pWnd, pBufSize);
bPass = FALSE;
if(!NT_SUCCESS(status))
{
break;
}
while(i < *pBufSize)
{
ulProcId = pfOrigUserQueryWindow(pWnd[i], 0);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
ObDereferenceObject(pEProcess);
i++;
continue;
}
ObDereferenceObject(pEProcess);
}
// find a hwnd which doesn't belong to OD to replace the OD hwnd
pWnd[j++] = pWnd[i];
i++;
}
for (i = j; i < *pBufSize; i++)
{
pWnd[i] = 0;
}
*pBufSize = j;
} while (0);
if(bPass)
{
status = pfOrigUserBuildHwndList(hDesktop, hWndParent, bEnumChildren, dwThreadId, lParam,
pWnd, pBufSize);
}
return status;
}
NTSTATUS __stdcall MyUserBuildHwndListWin8(
ULONG a1,
HANDLE a2,
ULONG bEnumChildren,
ULONG a4,
ULONG a5,
ULONG a6,
HANDLE * pWnd,
ULONG * pBufSize)
/*++
Routine Description:
a function available on win8, like MyUserBuildHwndList
--*/
{
NTSTATUS status = STATUS_SUCCESS;
BOOLEAN bPass = TRUE;
ULONG ulProcId;
PEPROCESS pEProcess = NULL;
ULONG i = 0, j = 0;
do
{
if(g_dwIsHidenWindow == FALSE || IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
break;
}
if(bEnumChildren == 1)
{
ulProcId = pfOrigUserQueryWindow(a2, 0);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
bPass = FALSE;
}
ObDereferenceObject(pEProcess);
}
}
if(bPass == FALSE)
{
break;
}
status = pfOrigUserBuildHwndListWin8(a1, a2, bEnumChildren,
a4, a5, a6, pWnd, pBufSize);
bPass = FALSE;
if(!NT_SUCCESS(status))
{
break;
}
while(i < *pBufSize)
{
ulProcId = pfOrigUserQueryWindow(pWnd[i], 0);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
ObDereferenceObject(pEProcess);
i++;
continue;
}
ObDereferenceObject(pEProcess);
}
// find a hwnd which doesn't belong to OD to replace the OD hwnd
pWnd[j++] = pWnd[i];
i++;
}
for (i = j; i < *pBufSize; i++)
{
pWnd[i] = 0;
}
*pBufSize = j;
} while (0);
if(bPass)
{
status = pfOrigUserBuildHwndListWin8(a1, a2, bEnumChildren, a4, a5, a6,
pWnd, pBufSize);
}
return status;
}
NTSTATUS CheckHandle(HANDLE Handle)
/*++
Routine Description:
check if the handle is a valid handle
--*/
{
NTSTATUS status;
OBJECT_HANDLE_INFORMATION HandleInfo = {0};
PVOID Object;
if(NT_SUCCESS( ObReferenceObjectByHandle(Handle, 0, NULL, KernelMode, &Object, &HandleInfo)))
{
if(HandleInfo.HandleAttributes & 1)
{
status = STATUS_HANDLE_NOT_CLOSABLE;
}
else
{
status = STATUS_SUCCESS;
}
ObDereferenceObject(Object);
}
else
{
status = STATUS_INVALID_HANDLE;
}
return status;
}
NTSTATUS __stdcall MyClose(
HANDLE Handle)
/*++
Routine Description:
check if the Handle is valid or not, if it is,
call original function, or return STATUS_INVALID_HANDLE
--*/
{
NTSTATUS status;
BOOLEAN bIsHandleValid = TRUE;
if(IsProcessInList(IoGetCurrentProcess(), 0, SOD_BLACK_PROCESS))
{
status = CheckHandle(Handle);
if(!NT_SUCCESS(status))
{
bIsHandleValid = FALSE;
}
}
if(bIsHandleValid)
{
status = pfOrigClose(Handle);
}
return status;
}
HANDLE __stdcall MyUserSetParent(
HANDLE hChild,
HANDLE hParent)
/*++
Routine Description:
if a process wants to set its hwnd as od's parent window or child window,
disable it.
--*/
{
BOOLEAN bPass = TRUE;
ULONG ulProcId = 0;
PEPROCESS pEProcess = NULL;
HANDLE hParentPre = NULL;
do
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS) &&
g_dwIsHidenWindow == TRUE)
{
ulProcId = pfOrigUserQueryWindow(hChild, 0);
if(NT_SUCCESS( PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess) ))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
// a process wants to set od's window as its child window
bPass = FALSE;
ObDereferenceObject(pEProcess);
break;
}
ObDereferenceObject(pEProcess);
}
ulProcId = pfOrigUserQueryWindow(hParent, 0);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
// a process wants to set its hwnd as the child of od's hwnd
bPass = FALSE;
}
ObDereferenceObject(pEProcess);
}
}
} while (0);
if(bPass)
{
hParentPre = pfOrigUserSetParent(hChild, hParent);
}
return hParentPre;
}
HANDLE __stdcall MyUserFindWindowEx(
HANDLE hParent,
HANDLE hChild,
PUNICODE_STRING punClassName,
PUNICODE_STRING punWindowName,
ULONG dwType)
/*++
Routine Description:
if a non-white process wants to find a window which belongs to a white process
then disable it.
--*/
{
PEPROCESS pEProcess = NULL;
HANDLE hRet = NULL;
ULONG ulProcId = 0;
hRet = pfOrigUserFindWindowEx(hParent, hChild,
punClassName, punWindowName, dwType);
if(g_dwIsHidenWindow)
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
ulProcId = pfOrigUserQueryWindow(hRet, 0);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)ulProcId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
hRet = NULL;
}
ObDereferenceObject(pEProcess);
}
}
}
return hRet;
}
NTSTATUS __stdcall MyDuplicateObject(
HANDLE SourceProcessHandle,
HANDLE SourceHandle,
HANDLE TargetProcessHandle,
PHANDLE TargetHandle,
ACCESS_MASK DesiredAccess,
ULONG HandleAttributes,
ULONG Options)
/*++
Routine Description:
check if the SourceHandle is valid or not, if it isn't,
just return.
--*/
{
PEPROCESS pEProcess = NULL;
BOOLEAN bIsHandleValid = TRUE;
NTSTATUS status;
if(IsProcessInList(IoGetCurrentProcess(), 0, SOD_BLACK_PROCESS))
{
if(Options & 1)
{
status = CheckHandle(SourceHandle);
if(!NT_SUCCESS(status))
{
bIsHandleValid = FALSE;
}
}
}
if(bIsHandleValid)
{
status = pfOrigDuplicateObject(SourceProcessHandle,
SourceHandle, TargetProcessHandle,
TargetHandle, DesiredAccess, HandleAttributes, Options);
}
return status;
}
NTSTATUS __stdcall MyCreateUserProcess(
PHANDLE ProcessHandle,
PHANDLE ThreadHandle,
ACCESS_MASK ProcessDesiredAccess,
ACCESS_MASK ThreadDesiredAccess,
POBJECT_ATTRIBUTES ProcessObjectAttributes,
POBJECT_ATTRIBUTES ThreadObjectAttributes,
ULONG CreateProcessFlags,
ULONG CreateThreadFlags,
PVOID ProcessParameters,
PVOID Parameter9,
PVOID AttributeList)
/*++
Routine Description:
Set parent process ProcessDebugFlags,
Here is for what? I don't know either.
--*/
{
NTSTATUS status;
PVOID ProcessInformation;
ULONG_PTR ulValue = 0;
do
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_BLACK_PROCESS))
{
break;
}
if(!NT_SUCCESS(ZwQueryInformationProcess(ZwCurrentProcess(),
ProcessDebugFlags, &ProcessInformation,
4, NULL)))
{
break;
}
if((ULONG)ProcessInformation != 1)
{
break;
}
ZwSetInformationProcess(ZwCurrentProcess(), ProcessDebugFlags, &ulValue, 4);
status = pfOrigCreateUserProcess(ProcessHandle, ThreadHandle,
ProcessDesiredAccess, ThreadDesiredAccess,
ProcessObjectAttributes, ThreadObjectAttributes,
CreateProcessFlags, CreateThreadFlags,
ProcessParameters, Parameter9, AttributeList);
ZwSetInformationProcess(ZwCurrentProcess(), ProcessDebugFlags, &ProcessInformation, 4);
goto done;
} while (0);
status = pfOrigCreateUserProcess(ProcessHandle, ThreadHandle,
ProcessDesiredAccess, ThreadDesiredAccess,
ProcessObjectAttributes, ThreadObjectAttributes,
CreateProcessFlags, CreateThreadFlags,
ProcessParameters, Parameter9, AttributeList);
done:
return status;
}
int GetDebugObjectNameAddr(char * pSearch, int size, wchar_t * name)
/*++
Routine Description:
search string "DebugObject" from the buffer pointed by pSearch
--*/
{
int i = 0;
if(*name != L'\0')
{
for(i = 0; i < size; i++)
{
if(0 == wcscmp((wchar_t *)(pSearch + i), name))
{
return i;
}
}
}
return -1;
}
NTSTATUS __stdcall MyQueryObject(
HANDLE ObjectHandle,
ULONG ObjectInformationClass,
PVOID ObjectInformation,
ULONG Length,
PULONG ReturnLength)
/*++
Routine Description:
Hide DebugObject
--*/
{
NTSTATUS status;
int nOffset = 0;
status = pfOrigQueryObject(ObjectHandle, ObjectInformationClass, ObjectInformation,
Length, ReturnLength);
if(NT_SUCCESS(status))
{
if(IsProcessInList(IoGetCurrentProcess(), 0, SOD_BLACK_PROCESS)
&& ObjectInformationClass == 3 /*ObjectAllTypeInformation*/)
{
nOffset = GetDebugObjectNameAddr((char *)ObjectInformation, Length - 22, L"DebugObject");
if(nOffset != -1)
{
// locate DebugObject Number
nOffset = nOffset - 88;
*(PULONG)((char *)ObjectInformation + nOffset) = 0; // TotalNumberofHandles
*(PULONG)((char *)ObjectInformation + nOffset + 4) = 0; // TotalNumberofObjects
}
}
}
return status;
}
NTSTATUS __stdcall MyQuerySystemInformation(
ULONG SystemInformationClass,
PVOID SystemInformation,
ULONG Length,
PULONG ReturnLength)
/*++
Routine Description:
SystemKernelDebuggerInformation:Hide Kernel Debugger Info
SystemProcessesAndThreadsInformation:Hide Process
SystemHandleInformation:Hide Process
SystemModuleInformation:Hide the driver
--*/
{
NTSTATUS status;
PSYSTEM_PROCANDTHREAD_INFORMATION pProcAndThreadInfo = NULL;
PSYSTEM_PROCANDTHREAD_INFORMATION pProcAndThreadInfoNext = NULL;
PEPROCESS pEProcess = NULL;
PSYSTEM_HANDLE_INFORMATION pSysHandleInfo = NULL;
ULONG i = 0;
PSYSTEM_MODULE_INFORMATION pSysModuleInfo = NULL;
BOOLEAN bShouldClear = FALSE;
KAPC_STATE ApcState;
PVOID Object;
status = pfOrigQuerySystemInformation(SystemInformationClass,
SystemInformation, Length, ReturnLength);
if(NT_SUCCESS(status) && !IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
// a non-white process call NtQuerySystemInformation
switch(SystemInformationClass)
{
case SystemKernelDebuggerInformation:
{
// hide kernel debugger
RtlZeroMemory(SystemInformation, Length);
}
break;
case SystemProcessesAndThreadsInformation:
{
// hide od
pProcAndThreadInfo = (PSYSTEM_PROCANDTHREAD_INFORMATION)SystemInformation;
if(g_dwIsHidenProcess)
{
while(pProcAndThreadInfo->NextEntryDelta != 0)
{
pProcAndThreadInfoNext = (PSYSTEM_PROCANDTHREAD_INFORMATION)((PUCHAR)pProcAndThreadInfo
+ pProcAndThreadInfo->NextEntryDelta);
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)pProcAndThreadInfoNext->ProcessId,
&pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
// clear white process info
if(pProcAndThreadInfoNext->NextEntryDelta != 0)
{
pProcAndThreadInfo->NextEntryDelta += pProcAndThreadInfoNext->NextEntryDelta;
}
else
{
pProcAndThreadInfo->NextEntryDelta = 0;
}
RtlZeroMemory(pProcAndThreadInfoNext, pProcAndThreadInfoNext->NextEntryDelta);
}
else
{
pProcAndThreadInfo = pProcAndThreadInfoNext;
}
ObDereferenceObject(pEProcess);
}
}
}
if(g_ulMajorVer == 6)
{
// set parent process id to explorer
for(pProcAndThreadInfo = (PSYSTEM_PROCANDTHREAD_INFORMATION)SystemInformation;
pProcAndThreadInfo->NextEntryDelta != 0;
pProcAndThreadInfo = (PSYSTEM_PROCANDTHREAD_INFORMATION)((PUCHAR)pProcAndThreadInfo + pProcAndThreadInfo->NextEntryDelta))
{
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)pProcAndThreadInfo->ProcessId, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_BLACK_PROCESS))
{
pProcAndThreadInfo->InheritedFromProcessId = g_dwExplorerProcId;
}
ObDereferenceObject(pEProcess);
}
}
}
}
break;
case SystemHandleInformation:
{
pSysHandleInfo = (PSYSTEM_HANDLE_INFORMATION)SystemInformation;
if(g_dwIsProtectProcess || g_dwIsHidenProcess)
{
for(i = 0; i < pSysHandleInfo->NumberOfHandles; i++)
{
if(NT_SUCCESS(PsLookupProcessByProcessId((HANDLE)pSysHandleInfo->Handles[i].ProcessId, &pEProcess)))
{
if(*(PULONG)((PUCHAR)pEProcess + g_dwExitTimeOffsetInEProcess)
|| IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
RtlZeroMemory(&pSysHandleInfo->Handles[i], 16);
ObDereferenceObject(pEProcess);
}
else
{
if(pSysHandleInfo->Handles[i].ObjectTypeIndex == 5)
{
KeStackAttachProcess(pEProcess, &ApcState);
if(NT_SUCCESS(ObReferenceObjectByHandle(
(HANDLE)pSysHandleInfo->Handles[i].HandleValue,
GENERIC_READ, NULL, KernelMode, &Object, NULL)))
{
if(IsProcessInList((PEPROCESS)Object, 0, SOD_WHITE_PROCESS))
{
bShouldClear = TRUE;
}
ObDereferenceObject(Object);
}
KeUnstackDetachProcess(&ApcState);
}
else if(pSysHandleInfo->Handles[i].ObjectTypeIndex == 6)
{
KeStackAttachProcess(pEProcess, &ApcState);
if(NT_SUCCESS(ObReferenceObjectByHandle(
(HANDLE)pSysHandleInfo->Handles[i].HandleValue,
GENERIC_READ, NULL, KernelMode, &Object, NULL)))
{
if(IsProcessInList(IoThreadToProcess((PETHREAD)Object), 0, SOD_WHITE_PROCESS))
{
bShouldClear = TRUE;
}
ObDereferenceObject(Object);
}
KeUnstackDetachProcess(&ApcState);
}
if(bShouldClear)
{
RtlZeroMemory(&pSysHandleInfo->Handles[i], 16);
}
ObDereferenceObject(pEProcess);
}
}
}
}
}
break;
case SystemModuleInformation:
{
pSysModuleInfo = (PSYSTEM_MODULE_INFORMATION)SystemInformation;
for(i = 0; i < pSysModuleInfo->ModulesCount; i++)
{
if(pSysModuleInfo->Modules[i].ImageBaseAddress == g_pDriverStart
&& pSysModuleInfo->Modules[i].ImageSize == g_ulDriverSize)
{
pSysModuleInfo->Modules[i].ImageSize = pSysModuleInfo->Modules[0].ImageSize;
}
}
}
break;
default:
break;
}
}
return status;
}
NTSTATUS __stdcall MyYieldExecution(VOID)
/*++
Routine Description:
return STATUS_NO_YIELD_PERFORMED to hide debugger
--*/
{
NTSTATUS status = pfOrigYieldExecution();
return STATUS_NO_YIELD_PERFORMED;
}
NTSTATUS __stdcall MyCreateProcess(
PHANDLE ProcessHandle,
ACCESS_MASK DesiredAccess,
POBJECT_ATTRIBUTES ObjectAttributes,
HANDLE ParentProcess,
BOOLEAN InheritObjectTable,
HANDLE SectionHandle,
HANDLE DebugPort,
HANDLE ExceptionPort)
/*++
Routine Description:
See MyCreateUserProcess.
--*/
{
NTSTATUS status;
PVOID ProcessInformation;
ULONG_PTR ulValue = 0;
do
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_BLACK_PROCESS))
{
break;
}
if(!NT_SUCCESS(ZwQueryInformationProcess(ZwCurrentProcess(),
ProcessDebugFlags, &ProcessInformation,
4, NULL)))
{
break;
}
if((ULONG)ProcessInformation != 1)
{
break;
}
ZwSetInformationProcess(ZwCurrentProcess(), ProcessDebugFlags, &ulValue, 4);
status = pfOrigCreateProcess(ProcessHandle, DesiredAccess,
ObjectAttributes, ParentProcess, InheritObjectTable,
SectionHandle, DebugPort, ExceptionPort);
ZwSetInformationProcess(ZwCurrentProcess(), ProcessDebugFlags, &ProcessInformation, 4);
goto done;
} while (0);
status = pfOrigCreateProcess(ProcessHandle, DesiredAccess,
ObjectAttributes, ParentProcess, InheritObjectTable,
SectionHandle, DebugPort, ExceptionPort);
done:
return status;
}
NTSTATUS __stdcall MyOpenProcess(
PHANDLE ProcessHandle,
ACCESS_MASK DesiredAccess,
POBJECT_ATTRIBUTES ObjectAttributes,
PCLIENT_ID ClientId
)
/*++
Routine Description:
if a non-white process wants to open a white process, then refuse it
--*/
{
NTSTATUS status;
PEPROCESS pEProcess = NULL;
status = pfOrigOpenProcess(ProcessHandle, DesiredAccess, ObjectAttributes, ClientId);
if(NT_SUCCESS(status))
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
if( (HANDLE)g_dwSmssProcId != PsGetCurrentProcessId())
{
if(NT_SUCCESS(PsLookupProcessByProcessId(ClientId->UniqueProcess, &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS) && g_dwIsProtectProcess)
{
NtClose(*ProcessHandle);
*ProcessHandle = NULL;
if(g_dwIsHidenProcess)
{
status = STATUS_INVALID_PARAMETER;
}
else
{
status = STATUS_ACCESS_DENIED;
}
}
ObDereferenceObject(pEProcess);
}
if(g_dwIsProtectProcess && g_dwCsrssProcId == (ULONG)ClientId->UniqueProcess)
{
NtClose(*ProcessHandle);
*ProcessHandle = NULL;
status = pfOrigOpenProcess(ProcessHandle, DesiredAccess & (~PROCESS_DUP_HANDLE),
ObjectAttributes, ClientId);
}
}
}
}
return status;
}
ULONG __stdcall MyUserQueryWindow(
HANDLE hWnd, ULONG Index)
/*++
Routine Description:
if a non-white process query a window which belongs to a white process,
then refuse it.
--*/
{
PEPROCESS pEProcess = NULL;
ULONG ulRet = 0;
BOOLEAN bPass = TRUE;
if(g_dwIsHidenWindow)
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
if(NT_SUCCESS( PsLookupProcessByProcessId(
(HANDLE)pfOrigUserQueryWindow(hWnd, 0), &pEProcess)))
{
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS))
{
bPass = FALSE;
}
ObDereferenceObject(pEProcess);
}
}
}
if(bPass)
{
ulRet = pfOrigUserQueryWindow(hWnd, Index);
}
return ulRet;
}
NTSTATUS __stdcall MyOpenThread(
PHANDLE ThreadHandle,
ACCESS_MASK DesiredAccess,
POBJECT_ATTRIBUTES ObjectAttributes,
PCLIENT_ID ClientId)
/*++
Routine Description:
See MyOpenProcess
--*/
{
PEPROCESS pEProcess = NULL;
PETHREAD pEThread = NULL;
NTSTATUS status;
status = pfOrigOpenThread(ThreadHandle, DesiredAccess,
ObjectAttributes, ClientId);
if(NT_SUCCESS(status))
{
if(!IsProcessInList(IoGetCurrentProcess(), 0, SOD_WHITE_PROCESS))
{
if(g_dwSmssProcId != (ULONG)PsGetCurrentProcessId() &&
(g_ulMajorVer != 6 || g_dwCsrssProcId != (ULONG)PsGetCurrentProcessId()))
{
if(NT_SUCCESS(PsLookupThreadByThreadId(ClientId->UniqueThread, &pEThread)))
{
pEProcess = IoThreadToProcess(pEThread);
if(IsProcessInList(pEProcess, 0, SOD_WHITE_PROCESS)
&& g_dwIsProtectProcess)
{
NtClose(*ThreadHandle);
*ThreadHandle = NULL;
if(g_dwIsHidenProcess)
{
status = STATUS_INVALID_PARAMETER;
}
else