Common.h

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#pragma once

//              External Functions              //
 
UCHAR *
PsGetProcessImageFileName(IN PEPROCESS Process);
 
PVOID
PsGetProcessSectionBaseAddress(PEPROCESS Process); // Used to get the base address of process's executable image
 
NTKERNELAPI NTSTATUS NTAPI
SeCreateAccessState(
    PACCESS_STATE    AccessState,
    PVOID            AuxData,
    ACCESS_MASK      DesiredAccess,
    PGENERIC_MAPPING Mapping);
 
NTKERNELAPI VOID NTAPI
SeDeleteAccessState(
    PACCESS_STATE AccessState);
 
NTSTATUS
MmUnmapViewOfSection(PEPROCESS Process, PVOID BaseAddress); // Used to unmap process's executable image

//         Windows-specific structures          //

typedef struct _NT_KPROCESS
{
    DISPATCHER_HEADER Header;
    LIST_ENTRY        ProfileListHead;
    ULONG_PTR         DirectoryTableBase;
    UCHAR             Data[1];
} NT_KPROCESS, *PNT_KPROCESS;

//                    Enums                     //

typedef enum _PROCESS_KILL_METHODS
{
    PROCESS_KILL_METHOD_1 = 0,
    PROCESS_KILL_METHOD_2,
    PROCESS_KILL_METHOD_3,
 
} PROCESS_KILL_METHODS;

//                    Constants                 //
 
/*
 * @brief Segment register and corresponding GDT meaning in Windows
 */
#define KGDT64_NULL      (0 * 16)     // NULL descriptor
#define KGDT64_R0_CODE   (1 * 16)     // kernel mode 64-bit code
#define KGDT64_R0_DATA   (1 * 16) + 8 // kernel mode 64-bit data (stack)
#define KGDT64_R3_CMCODE (2 * 16)     // user mode 32-bit code
#define KGDT64_R3_DATA   (2 * 16) + 8 // user mode 32-bit data
#define KGDT64_R3_CODE   (3 * 16)     // user mode 64-bit code
#define KGDT64_SYS_TSS   (4 * 16)     // kernel mode system task state
#define KGDT64_R3_CMTEB  (5 * 16)     // user mode 32-bit TEB
#define KGDT64_R0_CMCODE (6 * 16)     // kernel mode 32-bit code
#define KGDT64_LAST      (7 * 16)     // last entry

//               Loader Functions               //
 
BOOLEAN
CommonIsProcessExist(UINT32 ProcId);
 
PCHAR
CommonGetProcessNameFromProcessControlBlock(PEPROCESS Eprocess);
 
BOOLEAN
CommonKillProcess(UINT32 ProcessId, PROCESS_KILL_METHODS KillingMethod);
 
BOOLEAN
CommonValidateCoreNumber(UINT32 CoreNumber);