typedef USHORT	WORD;
typedef ULONG	DWORD;
typedef UCHAR	BYTE;

#define IMAGE_DOS_SIGNATURE                 0x5A4D      // MZ
#define IMAGE_NT_SIGNATURE                  0x00004550  // PE00

// Directory Entries

#define IMAGE_DIRECTORY_ENTRY_EXPORT          0   // Export Directory
#define IMAGE_DIRECTORY_ENTRY_IMPORT          1   // Import Directory
#define IMAGE_DIRECTORY_ENTRY_RESOURCE        2   // Resource Directory
#define IMAGE_DIRECTORY_ENTRY_EXCEPTION       3   // Exception Directory
#define IMAGE_DIRECTORY_ENTRY_SECURITY        4   // Security Directory
#define IMAGE_DIRECTORY_ENTRY_BASERELOC       5   // Base Relocation Table
#define IMAGE_DIRECTORY_ENTRY_DEBUG           6   // Debug Directory
//      IMAGE_DIRECTORY_ENTRY_COPYRIGHT       7   // (X86 usage)
#define IMAGE_DIRECTORY_ENTRY_ARCHITECTURE    7   // Architecture Specific Data
#define IMAGE_DIRECTORY_ENTRY_GLOBALPTR       8   // RVA of GP
#define IMAGE_DIRECTORY_ENTRY_TLS             9   // TLS Directory
#define IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG    10   // Load Configuration Directory
#define IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT   11   // Bound Import Directory in headers
#define IMAGE_DIRECTORY_ENTRY_IAT            12   // Import Address Table
#define IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT   13   // Delay Load Import Descriptors
#define IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR 14   // COM Runtime descriptor


typedef struct _IMAGE_DOS_HEADER {      // DOS .EXE header
	WORD   e_magic;                     // Magic number
	WORD   e_cblp;                      // Bytes on last page of file
	WORD   e_cp;                        // Pages in file
	WORD   e_crlc;                      // Relocations
	WORD   e_cparhdr;                   // Size of header in paragraphs
	WORD   e_minalloc;                  // Minimum extra paragraphs needed
	WORD   e_maxalloc;                  // Maximum extra paragraphs needed
	WORD   e_ss;                        // Initial (relative) SS value
	WORD   e_sp;                        // Initial SP value
	WORD   e_csum;                      // Checksum
	WORD   e_ip;                        // Initial IP value
	WORD   e_cs;                        // Initial (relative) CS value
	WORD   e_lfarlc;                    // File address of relocation table
	WORD   e_ovno;                      // Overlay number
	WORD   e_res[4];                    // Reserved words
	WORD   e_oemid;                     // OEM identifier (for e_oeminfo)
	WORD   e_oeminfo;                   // OEM information; e_oemid specific
	WORD   e_res2[10];                  // Reserved words
	LONG   e_lfanew;                    // File address of new exe header
} IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER;

typedef struct _IMAGE_EXPORT_DIRECTORY {
    DWORD   Characteristics;
    DWORD   TimeDateStamp;
    WORD    MajorVersion;
    WORD    MinorVersion;
    DWORD   Name;
    DWORD   Base;
    DWORD   NumberOfFunctions;
    DWORD   NumberOfNames;
    DWORD   AddressOfFunctions;     // RVA from base of image
    DWORD   AddressOfNames;         // RVA from base of image
    DWORD   AddressOfNameOrdinals;  // RVA from base of image
} IMAGE_EXPORT_DIRECTORY, *PIMAGE_EXPORT_DIRECTORY;



typedef struct _IMAGE_FILE_HEADER {
	WORD    Machine;
	WORD    NumberOfSections;
	DWORD   TimeDateStamp;
	DWORD   PointerToSymbolTable;
	DWORD   NumberOfSymbols;
	WORD    SizeOfOptionalHeader;
	WORD    Characteristics;
} IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER;

typedef struct _IMAGE_DATA_DIRECTORY {
    DWORD   VirtualAddress;
    DWORD   Size;
} IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;

#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES    16

typedef struct _IMAGE_OPTIONAL_HEADER {
	WORD    Magic;
	BYTE    MajorLinkerVersion;
	BYTE    MinorLinkerVersion;
	DWORD   SizeOfCode;
	DWORD   SizeOfInitializedData;
	DWORD   SizeOfUninitializedData;
	DWORD   AddressOfEntryPoint;
	DWORD   BaseOfCode;
	DWORD   BaseOfData;
	DWORD   ImageBase;
	DWORD   SectionAlignment;
	DWORD   FileAlignment;
	WORD    MajorOperatingSystemVersion;
	WORD    MinorOperatingSystemVersion;
	WORD    MajorImageVersion;
	WORD    MinorImageVersion;
	WORD    MajorSubsystemVersion;
	WORD    MinorSubsystemVersion;
	DWORD   Win32VersionValue;
	DWORD   SizeOfImage;
	DWORD   SizeOfHeaders;
	DWORD   CheckSum;
	WORD    Subsystem;
	WORD    DllCharacteristics;
	DWORD   SizeOfStackReserve;
	DWORD   SizeOfStackCommit;
	DWORD   SizeOfHeapReserve;
	DWORD   SizeOfHeapCommit;
	DWORD   LoaderFlags;
	DWORD   NumberOfRvaAndSizes;
	IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
} IMAGE_OPTIONAL_HEADER, *PIMAGE_OPTIONAL_HEADER;

typedef struct _IMAGE_NT_HEADERS {
	DWORD Signature;
	IMAGE_FILE_HEADER FileHeader;
	IMAGE_OPTIONAL_HEADER OptionalHeader;
} IMAGE_NT_HEADERS, *PIMAGE_NT_HEADERS;

