驱动程序保护进程（修改SSDT方式）源码

typedef NTSTATUS (*ZWOPENPROCESS)( OUT PHANDLE ProcessHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, IN PCLIENT_ID ClientId ); NTSYSAPI NTSTATUS NTAPI ZwOpenProcess ( OUT PHANDLE ProcessHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, IN PCLIENT_ID ClientId ); ZWOPENPROCESS OldZwOpenProcess; NTSTATUS NewZwOpenProcess ( OUT PHANDLE ProcessHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttribu tes, IN PCLIENT_ID ClientId ) { NTSTATUS ntStatus; ntStatus = ((ZWOPENPROCESS)(OldZwOpenProcess)) ( ProcessHandle, DesiredAccess, ObjectAttributes, ClientId ); if(ClientId->UniqueProcess == (HANDLE)ulPID) *ProcessHandle = NULL; return ntStatus; }