mirror of
https://github.com/JKornev/hidden
synced 2024-06-28 18:02:15 +00:00
927 lines
24 KiB
C
927 lines
24 KiB
C
#include "PsMonitor.h"
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#include "ExcludeList.h"
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#include "Helper.h"
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#include "PsTable.h"
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#include "PsRules.h"
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#include "Driver.h"
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#include "Configs.h"
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#define PSMON_ALLOC_TAG 'nMsP'
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#define PROCESS_QUERY_LIMITED_INFORMATION 0x1000
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#define SYSTEM_PROCESS_ID (HANDLE)4
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BOOLEAN g_psMonitorInited = FALSE;
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PVOID g_obRegCallback = NULL;
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OB_OPERATION_REGISTRATION g_regOperation[2];
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OB_CALLBACK_REGISTRATION g_regCallback;
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PsRulesContext g_excludeProcessRules;
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PsRulesContext g_protectProcessRules;
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FAST_MUTEX g_processTableLock;
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typedef struct _ProcessListEntry {
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LPCWSTR path;
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ULONG inherit;
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} ProcessListEntry, *PProcessListEntry;
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// Use this variable for hard code full path to applications that can see hidden objects
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// For instance: L"\\Device\\HarddiskVolume1\\Windows\\System32\\calc.exe",
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// Notice: this array should be NULL terminated
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CONST ProcessListEntry g_excludeProcesses[] = {
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{ NULL, PsRuleTypeWithoutInherit }
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};
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// Use this variable for hard code full path to applications that will be protected
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// For instance: L"\\Device\\HarddiskVolume1\\Windows\\System32\\cmd.exe",
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// Notice: this array should be NULL terminated
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CONST ProcessListEntry g_protectProcesses[] = {
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{ NULL, PsRuleTypeWithoutInherit }
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};
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#define CSRSS_PAHT_BUFFER_SIZE 256
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UNICODE_STRING g_csrssPath;
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WCHAR g_csrssPathBuffer[CSRSS_PAHT_BUFFER_SIZE];
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BOOLEAN CheckProtectedOperation(HANDLE Source, HANDLE Destination)
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{
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ProcessTableEntry srcInfo, destInfo;
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BOOLEAN result;
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if (Source == Destination)
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return FALSE;
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srcInfo.processId = Source;
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ExAcquireFastMutex(&g_processTableLock);
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result = GetProcessInProcessTable(&srcInfo);
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ExReleaseFastMutex(&g_processTableLock);
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if (!result)
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return FALSE;
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destInfo.processId = Destination;
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// Spinlock is locked once for both Get\Update process table functions
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// because we want to prevent situations when another thread can change
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// any state of process beetwen get and update functions on this place
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ExAcquireFastMutex(&g_processTableLock);
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if (!GetProcessInProcessTable(&destInfo))
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{
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ExReleaseFastMutex(&g_processTableLock);
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return FALSE;
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}
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// Not-inited process can open any process (parent, csrss, etc)
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if (!destInfo.inited)
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{
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result = TRUE;
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// Update if source is subsystem and destination isn't inited
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if (srcInfo.subsystem)
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{
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destInfo.inited = TRUE;
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if (!UpdateProcessInProcessTable(&destInfo))
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result = FALSE;
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}
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ExReleaseFastMutex(&g_processTableLock);
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if (!result)
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LogWarning("Warning, can't update initial state for process: %p", destInfo.processId);
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return FALSE;
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}
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ExReleaseFastMutex(&g_processTableLock);
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if (!destInfo.protected)
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return FALSE;
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if (srcInfo.protected)
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return FALSE;
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if (srcInfo.subsystem)
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return FALSE;
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return TRUE;
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}
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OB_PREOP_CALLBACK_STATUS ProcessPreCallback(PVOID RegistrationContext, POB_PRE_OPERATION_INFORMATION OperationInformation)
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{
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UNREFERENCED_PARAMETER(RegistrationContext);
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if (!IsDriverEnabled())
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return OB_PREOP_SUCCESS;
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if (OperationInformation->KernelHandle)
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return OB_PREOP_SUCCESS;
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LogInfo("Process object operation, destPid:%d, srcTid:%d, oper: %s, space: %s",
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PsGetProcessId(OperationInformation->Object), PsGetCurrentThreadId(),
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(OperationInformation->Operation == OB_OPERATION_HANDLE_CREATE ? "create" : "dup"),
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(OperationInformation->KernelHandle ? "kernel" : "user")
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);
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if (!CheckProtectedOperation(PsGetCurrentProcessId(), PsGetProcessId(OperationInformation->Object)))
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{
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LogInfo("Allow protected process access from %d to %d", (ULONG)PsGetCurrentProcessId(), (ULONG)PsGetThreadProcessId(OperationInformation->Object));
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return OB_PREOP_SUCCESS;
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}
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LogTrace("Disallow protected process access from %d to %d", (ULONG)PsGetCurrentProcessId(), (ULONG)PsGetProcessId(OperationInformation->Object));
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if (OperationInformation->Operation == OB_OPERATION_HANDLE_CREATE)
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OperationInformation->Parameters->CreateHandleInformation.DesiredAccess = (SYNCHRONIZE | PROCESS_QUERY_LIMITED_INFORMATION);
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else
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OperationInformation->Parameters->DuplicateHandleInformation.DesiredAccess = (SYNCHRONIZE | PROCESS_QUERY_LIMITED_INFORMATION);
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return OB_PREOP_SUCCESS;
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}
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OB_PREOP_CALLBACK_STATUS ThreadPreCallback(PVOID RegistrationContext, POB_PRE_OPERATION_INFORMATION OperationInformation)
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{
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UNREFERENCED_PARAMETER(RegistrationContext);
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if (!IsDriverEnabled())
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return OB_PREOP_SUCCESS;
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if (OperationInformation->KernelHandle)
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return OB_PREOP_SUCCESS;
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LogInfo("Thread object operation, destPid:%d, destTid:%d, srcTid:%d, oper:%s, space:%s",
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(ULONG)PsGetThreadProcessId(OperationInformation->Object),
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(ULONG)PsGetThreadId(OperationInformation->Object),
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(ULONG)PsGetCurrentProcessId(),
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(OperationInformation->Operation == OB_OPERATION_HANDLE_CREATE ? "create" : "dup"),
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(OperationInformation->KernelHandle ? "kernel" : "user")
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);
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if (!CheckProtectedOperation(PsGetCurrentProcessId(), PsGetProcessId(OperationInformation->Object)))
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{
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LogInfo("Allow protected thread access from %d to %d", (ULONG)PsGetCurrentProcessId(), (ULONG)PsGetThreadProcessId(OperationInformation->Object));
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return OB_PREOP_SUCCESS;
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}
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LogTrace("Disallow protected thread access from %d to %d", (ULONG)PsGetCurrentProcessId(), (ULONG)PsGetThreadProcessId(OperationInformation->Object));
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if (OperationInformation->Operation == OB_OPERATION_HANDLE_CREATE)
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OperationInformation->Parameters->CreateHandleInformation.DesiredAccess = (SYNCHRONIZE | THREAD_QUERY_LIMITED_INFORMATION);
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else
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OperationInformation->Parameters->DuplicateHandleInformation.DesiredAccess = (SYNCHRONIZE | THREAD_QUERY_LIMITED_INFORMATION);
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return OB_PREOP_SUCCESS;
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}
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VOID CheckProcessFlags(PProcessTableEntry Entry, PCUNICODE_STRING ImgPath, HANDLE ParentId)
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{
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ProcessTableEntry lookup;
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ULONG inheritType;
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BOOLEAN result;
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RtlZeroMemory(&lookup, sizeof(lookup));
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Entry->inited = (!g_psMonitorInited ? TRUE : FALSE);
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if (Entry->processId == (HANDLE)4)
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Entry->subsystem = TRUE;
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else
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Entry->subsystem = RtlEqualUnicodeString(&g_csrssPath, ImgPath, TRUE);
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// Check exclude flag
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Entry->excluded = FALSE;
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Entry->inheritExclusion = PsRuleTypeWithoutInherit;
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if (FindInheritanceInPsRuleList(g_excludeProcessRules, ImgPath, &inheritType))
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{
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Entry->excluded = TRUE;
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Entry->inheritExclusion = inheritType;
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}
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else if (ParentId != 0)
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{
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lookup.processId = ParentId;
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ExAcquireFastMutex(&g_processTableLock);
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result = GetProcessInProcessTable(&lookup);
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ExReleaseFastMutex(&g_processTableLock);
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if (result)
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{
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if (lookup.inheritExclusion == PsRuleTypeInherit)
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{
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Entry->excluded = TRUE;
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Entry->inheritExclusion = PsRuleTypeInherit;
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}
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else if (lookup.inheritExclusion == PsRuleTypeInheritOnce)
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{
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Entry->excluded = TRUE;
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Entry->inheritExclusion = PsRuleTypeWithoutInherit;
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}
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}
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}
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// Check protected flag
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Entry->protected = FALSE;
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Entry->inheritProtection = PsRuleTypeWithoutInherit;
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if (FindInheritanceInPsRuleList(g_protectProcessRules, ImgPath, &inheritType))
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{
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Entry->protected = TRUE;
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Entry->inheritProtection = inheritType;
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}
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else if (ParentId != 0)
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{
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lookup.processId = ParentId;
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ExAcquireFastMutex(&g_processTableLock);
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result = GetProcessInProcessTable(&lookup);
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ExReleaseFastMutex(&g_processTableLock);
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if (result)
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{
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if (lookup.inheritProtection == PsRuleTypeInherit)
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{
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Entry->protected = TRUE;
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Entry->inheritProtection = PsRuleTypeInherit;
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}
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else if (lookup.inheritProtection == PsRuleTypeInheritOnce)
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{
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Entry->protected = TRUE;
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Entry->inheritProtection = PsRuleTypeWithoutInherit;
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}
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}
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}
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}
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VOID CreateProcessNotifyCallback(PEPROCESS Process, HANDLE ProcessId, PPS_CREATE_NOTIFY_INFO CreateInfo)
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{
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ProcessTableEntry entry;
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BOOLEAN result;
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UNREFERENCED_PARAMETER(Process);
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if (CreateInfo)
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LogInfo(
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"Create process, pid:%p, srcPid:%p, srcTid:%p, image:%wZ",
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ProcessId,
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PsGetCurrentProcessId(),
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PsGetCurrentThreadId(),
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CreateInfo->ImageFileName
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);
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else
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LogInfo(
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"Destroy process, pid:%p, srcPid:%p, srcTid:%p",
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ProcessId,
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PsGetCurrentProcessId(),
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PsGetCurrentThreadId()
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);
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RtlZeroMemory(&entry, sizeof(entry));
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entry.processId = ProcessId;
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if (CreateInfo)
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{
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const USHORT maxBufSize = CreateInfo->ImageFileName->Length + NORMALIZE_INCREAMENT;
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UNICODE_STRING normalized;
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NTSTATUS status;
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normalized.Buffer = (PWCH)ExAllocatePoolWithTag(PagedPool, maxBufSize, PSMON_ALLOC_TAG);
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normalized.Length = 0;
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normalized.MaximumLength = maxBufSize;
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if (!normalized.Buffer)
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{
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LogWarning("Error, can't allocate buffer");
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return;
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}
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status = NormalizeDevicePath(CreateInfo->ImageFileName, &normalized);
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if (!NT_SUCCESS(status))
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{
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LogWarning("Error, path normalization failed with code:%08x, path:%wZ", status, CreateInfo->ImageFileName);
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ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
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return;
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}
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CheckProcessFlags(&entry, &normalized, PsGetCurrentProcessId()/*CreateInfo->ParentProcessId*/);
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if (entry.excluded)
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LogTrace("Excluded process:%p", ProcessId);
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if (entry.protected)
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LogTrace("Protected process:%p", ProcessId);
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ExAcquireFastMutex(&g_processTableLock);
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result = AddProcessToProcessTable(&entry);
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ExReleaseFastMutex(&g_processTableLock);
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if (!result)
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LogWarning("Warning, can't add process(pid:%p) to process table", ProcessId);
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ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
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}
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else
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{
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ExAcquireFastMutex(&g_processTableLock);
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result = RemoveProcessFromProcessTable(&entry);
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ExReleaseFastMutex(&g_processTableLock);
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if (!result)
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LogWarning("Warning, can't remove process(pid:%p) from process table", ProcessId);
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}
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}
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BOOLEAN IsProcessExcluded(HANDLE ProcessId)
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{
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ProcessTableEntry entry;
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BOOLEAN result;
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// Exclude system process because we don't want affect to kernel-mode threads
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if (ProcessId == (HANDLE)4)
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return TRUE;
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entry.processId = ProcessId;
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ExAcquireFastMutex(&g_processTableLock);
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result = GetProcessInProcessTable(&entry);
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ExReleaseFastMutex(&g_processTableLock);
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if (!result)
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return FALSE;
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//return ((entry.excluded || entry.subsystem) ? TRUE : FALSE);
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return ((entry.excluded || ProcessId == (HANDLE)4) ? TRUE : FALSE);
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}
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BOOLEAN IsProcessProtected(HANDLE ProcessId)
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{
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ProcessTableEntry entry;
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BOOLEAN result;
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entry.processId = ProcessId;
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ExAcquireFastMutex(&g_processTableLock);
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result = GetProcessInProcessTable(&entry);
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ExReleaseFastMutex(&g_processTableLock);
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if (!result)
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return FALSE;
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return entry.protected;
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}
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NTSTATUS ParsePsConfigEntry(PUNICODE_STRING Entry, PUNICODE_STRING Path, PULONG Inherit)
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{
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USHORT inx, length = Entry->Length / sizeof(WCHAR);
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LPWSTR str = Entry->Buffer;
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UNICODE_STRING command, template;
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RtlZeroMemory(&command, sizeof(command));
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for (inx = 0; inx < length; inx++)
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{
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if (str[inx] == L';')
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{
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command.Buffer = str + inx + 1;
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command.Length = (length - inx - 1) * sizeof(WCHAR);
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command.MaximumLength = command.Length;
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break;
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}
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}
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if (inx == 0)
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return STATUS_NO_DATA_DETECTED;
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Path->Buffer = Entry->Buffer;
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Path->Length = inx * sizeof(WCHAR);
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Path->MaximumLength = Path->Length;
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RtlInitUnicodeString(&template, L"none");
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if (RtlCompareUnicodeString(&command, &template, TRUE) == 0)
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{
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*Inherit = PsRuleTypeWithoutInherit;
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return STATUS_SUCCESS;
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}
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RtlInitUnicodeString(&template, L"always");
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if (RtlCompareUnicodeString(&command, &template, TRUE) == 0)
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{
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*Inherit = PsRuleTypeInherit;
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return STATUS_SUCCESS;
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}
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RtlInitUnicodeString(&template, L"once");
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if (RtlCompareUnicodeString(&command, &template, TRUE) == 0)
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{
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*Inherit = PsRuleTypeInheritOnce;
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return STATUS_SUCCESS;
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}
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return STATUS_NOT_FOUND;
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}
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VOID LoadProtectedRulesCallback(PUNICODE_STRING Str, PVOID Params)
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{
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UNICODE_STRING path;
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ULONG inherit;
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PsRuleEntryId ruleId;
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UNREFERENCED_PARAMETER(Params);
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if (NT_SUCCESS(ParsePsConfigEntry(Str, &path, &inherit)))
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AddProtectedImage(&path, inherit, FALSE, &ruleId);
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}
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VOID LoadIgnoredRulesCallback(PUNICODE_STRING Str, PVOID Params)
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{
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UNICODE_STRING path;
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ULONG inherit;
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PsRuleEntryId ruleId;
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UNREFERENCED_PARAMETER(Params);
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if (NT_SUCCESS(ParsePsConfigEntry(Str, &path, &inherit)))
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AddExcludedImage(&path, inherit, FALSE, &ruleId);
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}
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NTSTATUS InitializePsMonitor(PDRIVER_OBJECT DriverObject)
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{
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const USHORT maxBufSize = 512;
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NTSTATUS status;
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UNICODE_STRING str, normalized, csrss;
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UINT32 i;
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PsRuleEntryId ruleId;
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UNREFERENCED_PARAMETER(DriverObject);
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// Set csrss path
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RtlZeroMemory(g_csrssPathBuffer, sizeof(g_csrssPathBuffer));
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g_csrssPath.Buffer = g_csrssPathBuffer;
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g_csrssPath.Length = 0;
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g_csrssPath.MaximumLength = sizeof(g_csrssPathBuffer);
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RtlInitUnicodeString(&csrss, L"\\SystemRoot\\System32\\csrss.exe");
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status = NormalizeDevicePath(&csrss, &g_csrssPath);
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if (!NT_SUCCESS(status))
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{
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LogError("Error, subsystem path normalization failed with code:%08x", status);
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return status;
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}
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LogTrace("Subsystem path: %wZ", &g_csrssPath);
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// Init normalization buffer
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normalized.Buffer = (PWCH)ExAllocatePoolWithTag(NonPagedPool, maxBufSize, PSMON_ALLOC_TAG);
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normalized.Length = 0;
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normalized.MaximumLength = maxBufSize;
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if (!normalized.Buffer)
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{
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LogError("Error, allocation failed");
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return STATUS_ACCESS_DENIED;
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}
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// Initialize and fill exclude file\dir lists
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// exclude
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status = InitializePsRuleListContext(&g_excludeProcessRules);
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if (!NT_SUCCESS(status))
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{
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LogError("Error, excluded process rules initialization failed with code:%08x", status);
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ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
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return status;
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}
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for (i = 0; g_excludeProcesses[i].path; i++)
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{
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RtlInitUnicodeString(&str, g_excludeProcesses[i].path);
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status = NormalizeDevicePath(&str, &normalized);
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LogTrace("Normalized excluded: %wZ", &normalized);
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if (!NT_SUCCESS(status))
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{
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LogWarning("Path normalization failed with code:%08x, path:%wZ", status, &str);
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continue;
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}
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AddRuleToPsRuleList(g_excludeProcessRules, &normalized, g_excludeProcesses[i].inherit, &ruleId);
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}
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// Load entries from the config
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CfgEnumConfigsTable(IgnoreImagesTable, &LoadIgnoredRulesCallback, NULL);
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// protected
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status = InitializePsRuleListContext(&g_protectProcessRules);
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if (!NT_SUCCESS(status))
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{
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LogError("Error, protected process rules initialization failed with code:%08x", status);
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DestroyPsRuleListContext(g_excludeProcessRules);
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ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
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return status;
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}
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for (i = 0; g_protectProcesses[i].path; i++)
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{
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RtlInitUnicodeString(&str, g_protectProcesses[i].path);
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status = NormalizeDevicePath(&str, &normalized);
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LogTrace("Normalized protected %wZ", &normalized);
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if (!NT_SUCCESS(status))
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{
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LogWarning("Path normalization failed with code:%08x, path:%wZ", status, &str);
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|
continue;
|
|
}
|
|
|
|
AddRuleToPsRuleList(g_protectProcessRules, &normalized, g_protectProcesses[i].inherit, &ruleId);
|
|
}
|
|
|
|
// Load entries from the config
|
|
CfgEnumConfigsTable(ProtectImagesTable, &LoadProtectedRulesCallback, NULL);
|
|
|
|
// Process table
|
|
|
|
ExInitializeFastMutex(&g_processTableLock);
|
|
|
|
status = InitializeProcessTable(CheckProcessFlags);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
DestroyPsRuleListContext(g_excludeProcessRules);
|
|
DestroyPsRuleListContext(g_protectProcessRules);
|
|
ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
|
|
return status;
|
|
}
|
|
|
|
ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
|
|
|
|
g_psMonitorInited = TRUE;
|
|
|
|
// Register ps\thr pre create\duplicate object callback
|
|
|
|
g_regOperation[0].ObjectType = PsProcessType;
|
|
g_regOperation[0].Operations = OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE;
|
|
g_regOperation[0].PreOperation = ProcessPreCallback;
|
|
g_regOperation[0].PostOperation = NULL;
|
|
|
|
g_regOperation[1].ObjectType = PsThreadType;
|
|
g_regOperation[1].Operations = OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE;
|
|
g_regOperation[1].PreOperation = ThreadPreCallback;
|
|
g_regOperation[1].PostOperation = NULL;
|
|
|
|
g_regCallback.Version = OB_FLT_REGISTRATION_VERSION;
|
|
g_regCallback.OperationRegistrationCount = 2;
|
|
g_regCallback.RegistrationContext = NULL;
|
|
g_regCallback.OperationRegistration = g_regOperation;
|
|
RtlInitUnicodeString(&g_regCallback.Altitude, L"1000");
|
|
|
|
status = ObRegisterCallbacks(&g_regCallback, &g_obRegCallback);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogError("Error, object filter registration failed with code:%08x", status);
|
|
DestroyPsMonitor();
|
|
return status;
|
|
}
|
|
|
|
// Register rocess create\destroy callback
|
|
|
|
status = PsSetCreateProcessNotifyRoutineEx(CreateProcessNotifyCallback, FALSE);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogError("Error, process notify registartion failed with code:%08x", status);
|
|
DestroyPsMonitor();
|
|
return status;
|
|
}
|
|
|
|
LogTrace("Initialization is completed");
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS DestroyPsMonitor()
|
|
{
|
|
if (!g_psMonitorInited)
|
|
return STATUS_ALREADY_DISCONNECTED;
|
|
|
|
if (g_obRegCallback)
|
|
{
|
|
ObUnRegisterCallbacks(g_obRegCallback);
|
|
g_obRegCallback = NULL;
|
|
}
|
|
|
|
PsSetCreateProcessNotifyRoutineEx(CreateProcessNotifyCallback, TRUE);
|
|
|
|
DestroyPsRuleListContext(g_excludeProcessRules);
|
|
DestroyPsRuleListContext(g_protectProcessRules);
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
DestroyProcessTable();
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
g_psMonitorInited = FALSE;
|
|
|
|
LogTrace("Deinitialization is completed");
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS SetStateForProcessesByImage(PCUNICODE_STRING ImagePath, BOOLEAN Excluded, BOOLEAN Protected)
|
|
{
|
|
PSYSTEM_PROCESS_INFORMATION processInfo = NULL, first;
|
|
SIZE_T size = 0, offset;
|
|
NTSTATUS status;
|
|
|
|
status = QuerySystemInformation(SystemProcessInformation, &processInfo, &size);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogWarning("Query system information(pslist) failed with code:%08x", status);
|
|
return status;
|
|
}
|
|
|
|
offset = 0;
|
|
first = processInfo;
|
|
do
|
|
{
|
|
HANDLE hProcess;
|
|
CLIENT_ID clientId;
|
|
OBJECT_ATTRIBUTES attribs;
|
|
PUNICODE_STRING procName;
|
|
ProcessTableEntry entry;
|
|
|
|
processInfo = (PSYSTEM_PROCESS_INFORMATION)((SIZE_T)processInfo + offset);
|
|
|
|
if (processInfo->ProcessId == 0)
|
|
{
|
|
offset = processInfo->NextEntryOffset;
|
|
continue;
|
|
}
|
|
|
|
InitializeObjectAttributes(&attribs, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
|
|
clientId.UniqueProcess = processInfo->ProcessId;
|
|
clientId.UniqueThread = 0;
|
|
|
|
status = ZwOpenProcess(&hProcess, 0x1000/*PROCESS_QUERY_LIMITED_INFORMATION*/, &attribs, &clientId);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogWarning("Can't open process (pid:%p) failed with code:%08x", processInfo->ProcessId, status);
|
|
offset = processInfo->NextEntryOffset;
|
|
continue;
|
|
}
|
|
|
|
status = QueryProcessInformation(ProcessImageFileName, hProcess, &procName, &size);
|
|
ZwClose(hProcess);
|
|
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogWarning("Query process information(pid:%p) failed with code:%08x", processInfo->ProcessId, status);
|
|
offset = processInfo->NextEntryOffset;
|
|
continue;
|
|
}
|
|
|
|
entry.processId = processInfo->ProcessId;
|
|
if (RtlCompareUnicodeString(procName, ImagePath, TRUE) == 0)
|
|
{
|
|
BOOLEAN result = TRUE;
|
|
|
|
// Spinlock is locked once for both Get\Update process table functions
|
|
// because we want to prevent situations when another thread can change
|
|
// any state of process beetwen get and update functions on this place
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
|
|
if (GetProcessInProcessTable(&entry))
|
|
{
|
|
if (Excluded)
|
|
{
|
|
entry.excluded = TRUE;
|
|
entry.inheritExclusion = PsRuleTypeWithoutInherit;
|
|
}
|
|
|
|
if (Protected)
|
|
{
|
|
entry.protected = TRUE;
|
|
entry.inheritProtection = PsRuleTypeWithoutInherit;
|
|
}
|
|
|
|
if (!UpdateProcessInProcessTable(&entry))
|
|
result = FALSE;
|
|
}
|
|
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
LogWarning("Can't update process %p", processInfo->ProcessId);
|
|
}
|
|
|
|
FreeInformation(procName);
|
|
offset = processInfo->NextEntryOffset;
|
|
} while (offset);
|
|
|
|
FreeInformation(first);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS AddProtectedImage(PUNICODE_STRING ImagePath, ULONG InheritType, BOOLEAN ApplyForProcesses, PULONGLONG ObjId)
|
|
{
|
|
const USHORT maxBufSize = ImagePath->Length + NORMALIZE_INCREAMENT;
|
|
UNICODE_STRING normalized;
|
|
NTSTATUS status;
|
|
|
|
normalized.Buffer = (PWCH)ExAllocatePoolWithTag(PagedPool, maxBufSize, PSMON_ALLOC_TAG);
|
|
normalized.Length = 0;
|
|
normalized.MaximumLength = maxBufSize;
|
|
|
|
if (!normalized.Buffer)
|
|
{
|
|
LogWarning("Error, can't allocate buffer");
|
|
return STATUS_MEMORY_NOT_ALLOCATED;
|
|
}
|
|
|
|
status = NormalizeDevicePath(ImagePath, &normalized);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogWarning("Error, path normalization failed with code:%08x, path:%wZ", status, ImagePath);
|
|
ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
|
|
return status;
|
|
}
|
|
|
|
LogTrace("Adding protect image: %wZ", &normalized);
|
|
status = AddRuleToPsRuleList(g_protectProcessRules, &normalized, InheritType, ObjId);
|
|
|
|
if (ApplyForProcesses)
|
|
SetStateForProcessesByImage(&normalized, FALSE, TRUE);
|
|
|
|
ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS GetProtectedProcessState(HANDLE ProcessId, PULONG InheritType, PBOOLEAN Enable)
|
|
{
|
|
ProcessTableEntry entry;
|
|
BOOLEAN result;
|
|
|
|
entry.processId = ProcessId;
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
result = GetProcessInProcessTable(&entry);
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
return STATUS_NOT_FOUND;
|
|
|
|
*Enable = entry.protected;
|
|
*InheritType = entry.inheritProtection;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS SetProtectedProcessState(HANDLE ProcessId, ULONG InheritType, BOOLEAN Enable)
|
|
{
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|
ProcessTableEntry entry;
|
|
BOOLEAN result;
|
|
|
|
entry.processId = ProcessId;
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
result = GetProcessInProcessTable(&entry);
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
return STATUS_NOT_FOUND;
|
|
|
|
if (Enable)
|
|
{
|
|
entry.protected = TRUE;
|
|
entry.inheritProtection = InheritType;
|
|
}
|
|
else
|
|
{
|
|
entry.protected = FALSE;
|
|
}
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
result = UpdateProcessInProcessTable(&entry);
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
return STATUS_NOT_FOUND;
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS RemoveProtectedImage(ULONGLONG ObjId)
|
|
{
|
|
return RemoveRuleFromPsRuleList(g_protectProcessRules, ObjId);
|
|
}
|
|
|
|
NTSTATUS RemoveAllProtectedImages()
|
|
{
|
|
return RemoveAllRulesFromPsRuleList(g_protectProcessRules);
|
|
}
|
|
|
|
NTSTATUS AddExcludedImage(PUNICODE_STRING ImagePath, ULONG InheritType, BOOLEAN ApplyForProcesses, PULONGLONG ObjId)
|
|
{
|
|
const USHORT maxBufSize = ImagePath->Length + NORMALIZE_INCREAMENT;
|
|
UNICODE_STRING normalized;
|
|
NTSTATUS status;
|
|
|
|
normalized.Buffer = (PWCH)ExAllocatePoolWithTag(PagedPool, maxBufSize, PSMON_ALLOC_TAG);
|
|
normalized.Length = 0;
|
|
normalized.MaximumLength = maxBufSize;
|
|
|
|
if (!normalized.Buffer)
|
|
{
|
|
LogWarning("Error, can't allocate buffer");
|
|
return STATUS_MEMORY_NOT_ALLOCATED;
|
|
}
|
|
|
|
status = NormalizeDevicePath(ImagePath, &normalized);
|
|
if (!NT_SUCCESS(status))
|
|
{
|
|
LogWarning("Error, path normalization failed with code:%08x, path:%wZ", status, ImagePath);
|
|
ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
|
|
return status;
|
|
}
|
|
|
|
LogTrace("Adding exclude image: %wZ", &normalized);
|
|
status = AddRuleToPsRuleList(g_excludeProcessRules, &normalized, InheritType, ObjId);
|
|
|
|
if (ApplyForProcesses)
|
|
SetStateForProcessesByImage(&normalized, TRUE, FALSE);
|
|
|
|
ExFreePoolWithTag(normalized.Buffer, PSMON_ALLOC_TAG);
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS GetExcludedProcessState(HANDLE ProcessId, PULONG InheritType, PBOOLEAN Enable)
|
|
{
|
|
ProcessTableEntry entry;
|
|
BOOLEAN result;
|
|
|
|
entry.processId = ProcessId;
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
result = GetProcessInProcessTable(&entry);
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
return STATUS_NOT_FOUND;
|
|
|
|
*Enable = entry.excluded;
|
|
*InheritType = entry.inheritExclusion;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS SetExcludedProcessState(HANDLE ProcessId, ULONG InheritType, BOOLEAN Enable)
|
|
{
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|
ProcessTableEntry entry;
|
|
BOOLEAN result;
|
|
|
|
entry.processId = ProcessId;
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
result = GetProcessInProcessTable(&entry);
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
return STATUS_NOT_FOUND;
|
|
|
|
if (Enable)
|
|
{
|
|
entry.excluded = TRUE;
|
|
entry.inheritExclusion = InheritType;
|
|
}
|
|
else
|
|
{
|
|
entry.excluded = FALSE;
|
|
}
|
|
|
|
ExAcquireFastMutex(&g_processTableLock);
|
|
result = UpdateProcessInProcessTable(&entry);
|
|
ExReleaseFastMutex(&g_processTableLock);
|
|
|
|
if (!result)
|
|
return STATUS_NOT_FOUND;
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS RemoveExcludedImage(ULONGLONG ObjId)
|
|
{
|
|
return RemoveRuleFromPsRuleList(g_excludeProcessRules, ObjId);
|
|
}
|
|
|
|
NTSTATUS RemoveAllExcludedImages()
|
|
{
|
|
return RemoveAllRulesFromPsRuleList(g_excludeProcessRules);
|
|
}
|