refactor driver.c

This commit is contained in:
donnaskiez 2024-07-13 20:32:00 +10:00
parent 0e6f4def14
commit 8e68e4e4cc

View file

@ -132,6 +132,14 @@ UINT64 g_DeviceExtensionKey;
*/
PDRIVER_CONFIG g_DriverConfig = NULL;
DECLSPEC_NOINLINE
PDRIVER_CONFIG
GetDecryptedDriverConfig()
{
return (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
}
#define POOL_TAG_CONFIG 'conf'
STATIC
@ -166,215 +174,178 @@ STATIC
VOID
SetDriverLoadedFlag()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
cfg->has_driver_loaded = TRUE;
PAGED_CODE();
GetDecryptedDriverConfig()->has_driver_loaded = TRUE;
}
BCRYPT_ALG_HANDLE*
GetCryptHandle_Sha256()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->sha256_hash;
PAGED_CODE();
return &GetDecryptedDriverConfig()->sha256_hash;
}
PRTL_HASHMAP
GetProcessHashmap()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->process_hashmap;
PAGED_CODE();
return &GetDecryptedDriverConfig()->process_hashmap;
}
BCRYPT_ALG_HANDLE*
GetCryptHandle_AES()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->aes_hash;
PAGED_CODE();
return &GetDecryptedDriverConfig()->aes_hash;
}
BOOLEAN
HasDriverLoaded()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return cfg->has_driver_loaded;
PAGED_CODE();
return GetDecryptedDriverConfig()->has_driver_loaded;
}
VOID
UnsetNmiInProgressFlag()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
InterlockedDecrement(&cfg->nmi_status);
PAGED_CODE();
InterlockedDecrement(&GetDecryptedDriverConfig()->nmi_status);
}
BOOLEAN
IsNmiInProgress()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return InterlockedCompareExchange(&cfg->nmi_status, TRUE, FALSE) == 0
? FALSE
: TRUE;
PAGED_CODE();
return InterlockedCompareExchange(
&GetDecryptedDriverConfig()->nmi_status, TRUE, FALSE) != 0;
}
PSHARED_MAPPING
GetSharedMappingConfig()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->mapping;
PAGED_CODE();
return &GetDecryptedDriverConfig()->mapping;
}
VOID
AcquireDriverConfigLock()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
ImpKeAcquireGuardedMutex(&cfg->lock);
PAGED_CODE();
ImpKeAcquireGuardedMutex(&GetDecryptedDriverConfig()->lock);
}
VOID
ReleaseDriverConfigLock()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
ImpKeReleaseGuardedMutex(&cfg->lock);
PAGED_CODE();
ImpKeReleaseGuardedMutex(&GetDecryptedDriverConfig()->lock);
}
PUINT64
GetApcContextArray()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return (PUINT64)cfg->apc_contexts;
PAGED_CODE();
return (PUINT64)GetDecryptedDriverConfig()->apc_contexts;
}
BOOLEAN
IsDriverUnloading()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return InterlockedExchange(&cfg->unload_in_progress,
cfg->unload_in_progress);
PAGED_CODE();
return InterlockedExchange(&GetDecryptedDriverConfig()->unload_in_progress,
GetDecryptedDriverConfig()->unload_in_progress);
}
PACTIVE_SESSION
GetActiveSession()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->session_information;
PAGED_CODE();
return &GetDecryptedDriverConfig()->session_information;
}
LPCSTR
GetDriverName()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return cfg->ansi_driver_name.Buffer;
return GetDecryptedDriverConfig()->ansi_driver_name.Buffer;
}
PDEVICE_OBJECT
GetDriverDeviceObject()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return cfg->device_object;
return GetDecryptedDriverConfig()->device_object;
}
PDRIVER_OBJECT
GetDriverObject()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return cfg->driver_object;
return GetDecryptedDriverConfig()->driver_object;
}
PIRP_QUEUE_HEAD
GetIrpQueueHead()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->irp_queue;
PAGED_CODE();
return &GetDecryptedDriverConfig()->irp_queue;
}
PSYS_MODULE_VAL_CONTEXT
GetSystemModuleValidationContext()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->sys_val_context;
return &GetDecryptedDriverConfig()->sys_val_context;
}
PUNICODE_STRING
GetDriverPath()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->driver_path;
return &GetDecryptedDriverConfig()->driver_path;
}
PUNICODE_STRING
GetDriverRegistryPath()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->registry_path;
return &GetDecryptedDriverConfig()->registry_path;
}
PUNICODE_STRING
GetDriverDeviceName()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->device_name;
return &GetDecryptedDriverConfig()->device_name;
}
PUNICODE_STRING
GetDriverSymbolicLink()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->device_symbolic_link;
return &GetDecryptedDriverConfig()->device_symbolic_link;
}
PSYSTEM_INFORMATION
GetDriverConfigSystemInformation()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->system_information;
return &GetDecryptedDriverConfig()->system_information;
}
PRB_TREE
GetThreadTree()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->thread_tree;
return &GetDecryptedDriverConfig()->thread_tree;
}
PDRIVER_LIST_HEAD
GetDriverList()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
return &cfg->driver_list;
return &GetDecryptedDriverConfig()->driver_list;
}
/*
@ -400,8 +371,7 @@ DrvUnloadFreeConfigStrings()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
if (cfg->unicode_driver_name.Buffer)
ImpExFreePoolWithTag(cfg->unicode_driver_name.Buffer, POOL_TAG_STRINGS);
@ -417,11 +387,9 @@ STATIC
VOID
DrvUnloadDeleteSymbolicLink()
{
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
if (cfg->device_symbolic_link)
ImpIoDeleteSymbolicLink(cfg->device_symbolic_link);
if (GetDecryptedDriverConfig()->device_symbolic_link)
ImpIoDeleteSymbolicLink(
GetDecryptedDriverConfig()->device_symbolic_link);
}
STATIC
@ -445,9 +413,7 @@ VOID
DrvUnloadFreeTimerObject()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
CleanupDriverTimerObjects(&cfg->timer);
CleanupDriverTimerObjects(&GetDecryptedDriverConfig()->timer);
}
STATIC
@ -463,9 +429,8 @@ VOID
DrvUnloadFreeModuleValidationContext()
{
PAGED_CODE();
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
CleanupValidationContextOnUnload(&cfg->sys_val_context);
CleanupValidationContextOnUnload(
&GetDecryptedDriverConfig()->sys_val_context);
}
STATIC
@ -482,10 +447,7 @@ DriverUnload(_In_ PDRIVER_OBJECT DriverObject)
{
DEBUG_VERBOSE("Unloading...");
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
InterlockedExchange(&cfg->unload_in_progress, TRUE);
InterlockedExchange(&GetDecryptedDriverConfig()->unload_in_progress, TRUE);
while (DrvUnloadFreeAllApcContextStructures() == FALSE)
YieldProcessor();
@ -623,8 +585,7 @@ RegistryPathQueryCallbackRoutine(IN PWSTR ValueName,
ImpRtlInitUnicodeString(&value_name, ValueName);
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
if (ImpRtlCompareUnicodeString(&value_name, &image_path, FALSE) == FALSE) {
temp_buffer =
@ -679,8 +640,7 @@ NTSTATUS
GetSystemProcessorType()
{
UINT32 cpuid[4] = {0};
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
__cpuid(cpuid, 0);
@ -715,8 +675,7 @@ NTSTATUS
ParseSmbiosForGivenSystemEnvironment()
{
NTSTATUS status = STATUS_UNSUCCESSFUL;
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
status = ParseSMBIOSTable(&cfg->system_information.vendor,
VENDOR_STRING_MAX_LENGTH,
@ -769,8 +728,7 @@ NTSTATUS
DrvLoadGatherSystemEnvironmentSettings()
{
NTSTATUS status = STATUS_UNSUCCESSFUL;
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
if (APERFMsrTimingCheck())
cfg->system_information.virtualised_environment = TRUE;
@ -827,28 +785,27 @@ NTSTATUS
DrvLoadRetrieveDriverNameFromRegistry(_In_ PUNICODE_STRING RegistryPath)
{
NTSTATUS status = STATUS_UNSUCCESSFUL;
RTL_QUERY_REGISTRY_TABLE query_table[3] = {0};
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
RTL_QUERY_REGISTRY_TABLE query[3] = {0};
query_table[0].Flags = RTL_QUERY_REGISTRY_NOEXPAND;
query_table[0].Name = L"ImagePath";
query_table[0].DefaultType = REG_MULTI_SZ;
query_table[0].DefaultLength = 0;
query_table[0].DefaultData = NULL;
query_table[0].EntryContext = NULL;
query_table[0].QueryRoutine = RegistryPathQueryCallbackRoutine;
query[0].Flags = RTL_QUERY_REGISTRY_NOEXPAND;
query[0].Name = L"ImagePath";
query[0].DefaultType = REG_MULTI_SZ;
query[0].DefaultLength = 0;
query[0].DefaultData = NULL;
query[0].EntryContext = NULL;
query[0].QueryRoutine = RegistryPathQueryCallbackRoutine;
query_table[1].Flags = RTL_QUERY_REGISTRY_NOEXPAND;
query_table[1].Name = L"DisplayName";
query_table[1].DefaultType = REG_SZ;
query_table[1].DefaultLength = 0;
query_table[1].DefaultData = NULL;
query_table[1].EntryContext = NULL;
query_table[1].QueryRoutine = RegistryPathQueryCallbackRoutine;
query[1].Flags = RTL_QUERY_REGISTRY_NOEXPAND;
query[1].Name = L"DisplayName";
query[1].DefaultType = REG_SZ;
query[1].DefaultLength = 0;
query[1].DefaultData = NULL;
query[1].EntryContext = NULL;
query[1].QueryRoutine = RegistryPathQueryCallbackRoutine;
status = RtlxQueryRegistryValues(
RTL_REGISTRY_ABSOLUTE, RegistryPath->Buffer, &query_table, NULL, NULL);
RTL_REGISTRY_ABSOLUTE, RegistryPath->Buffer, &query, NULL, NULL);
if (!NT_SUCCESS(status)) {
DEBUG_ERROR("RtlxQueryRegistryValues failed with status %x", status);
@ -881,8 +838,7 @@ DrvLoadInitialiseDriverConfig(_In_ PDRIVER_OBJECT DriverObject,
DEBUG_VERBOSE("Initialising driver configuration");
NTSTATUS status = STATUS_UNSUCCESSFUL;
PDRIVER_CONFIG cfg = (PDRIVER_CONFIG)CryptDecryptPointerOutOfPlace64(
(PUINT64)&g_DriverConfig, g_DeviceExtensionKey);
PDRIVER_CONFIG cfg = GetDecryptedDriverConfig();
ImpKeInitializeGuardedMutex(&cfg->lock);
@ -950,7 +906,6 @@ DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
{
BOOLEAN flag = FALSE;
NTSTATUS status = STATUS_UNSUCCESSFUL;
UINT64 temp = 0;
DriverObject->MajorFunction[IRP_MJ_CREATE] = DeviceCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = DeviceClose;
@ -993,9 +948,7 @@ DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
DEBUG_ERROR("InitialiseDriverConfigOnDriverEntry failed with status %x",
status);
DrvUnloadFreeConfigStrings();
UINT64 temp = CryptDecryptPointerOutOfPlace64((PUINT64)&g_DriverConfig,
g_DeviceExtensionKey);
ImpIoDeleteDevice(((PDRIVER_CONFIG)temp)->device_object);
ImpIoDeleteDevice(GetDecryptedDriverConfig()->device_object);
return status;
}
@ -1005,23 +958,19 @@ DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
DEBUG_ERROR("SessionInitialiseStructure failed with status %x", status);
DrvUnloadFreeConfigStrings();
DrvUnloadFreeTimerObject();
UINT64 temp = CryptDecryptPointerOutOfPlace64((PUINT64)&g_DriverConfig,
g_DeviceExtensionKey);
ImpIoDeleteDevice(((PDRIVER_CONFIG)temp)->device_object);
ImpIoDeleteDevice(GetDecryptedDriverConfig()->device_object);
return status;
}
temp = CryptDecryptPointerOutOfPlace64((PUINT64)&g_DriverConfig,
g_DeviceExtensionKey);
status = IoCreateSymbolicLink(((PDRIVER_CONFIG)temp)->device_symbolic_link,
((PDRIVER_CONFIG)temp)->device_name);
status =
IoCreateSymbolicLink(GetDecryptedDriverConfig()->device_symbolic_link,
GetDecryptedDriverConfig()->device_name);
if (!NT_SUCCESS(status)) {
DEBUG_ERROR("IoCreateSymbolicLink failed with status %x", status);
DrvUnloadFreeConfigStrings();
DrvUnloadFreeTimerObject();
ImpIoDeleteDevice(((PDRIVER_CONFIG)temp)->device_object);
ImpIoDeleteDevice(GetDecryptedDriverConfig()->device_object);
return status;
}
@ -1032,9 +981,7 @@ DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
DrvUnloadFreeConfigStrings();
DrvUnloadFreeTimerObject();
DrvUnloadDeleteSymbolicLink();
temp = CryptDecryptPointerOutOfPlace64((PUINT64)&g_DriverConfig,
g_DeviceExtensionKey);
ImpIoDeleteDevice(((PDRIVER_CONFIG)temp)->device_object);
ImpIoDeleteDevice(GetDecryptedDriverConfig()->device_object);
return status;
}
@ -1046,9 +993,7 @@ DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
DrvUnloadFreeConfigStrings();
DrvUnloadFreeTimerObject();
DrvUnloadDeleteSymbolicLink();
temp = CryptDecryptPointerOutOfPlace64((PUINT64)&g_DriverConfig,
g_DeviceExtensionKey);
ImpIoDeleteDevice(((PDRIVER_CONFIG)temp)->device_object);
ImpIoDeleteDevice(GetDecryptedDriverConfig()->device_object);
return status;
}
@ -1060,9 +1005,7 @@ DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
DrvUnloadFreeConfigStrings();
DrvUnloadFreeTimerObject();
DrvUnloadDeleteSymbolicLink();
temp = CryptDecryptPointerOutOfPlace64((PUINT64)&g_DriverConfig,
g_DeviceExtensionKey);
ImpIoDeleteDevice(((PDRIVER_CONFIG)temp)->device_object);
ImpIoDeleteDevice(GetDecryptedDriverConfig()->device_object);
return status;
}