PE（Portable Executable）格式，是微軟Win32環境可移植可執行檔案(如exe、dll、vxd、sys和vdm等)的標準檔案格式。

PE格式衍生於早期建立在VAX(R)VMS(R)上的COFF(Common Object File Format)檔案格式。Portable 是指對於不同的

Windows版本和不同的CPU型別上PE檔案的格式是一樣的，當然CPU不一樣了，CPU指令的二進位制編碼是不一樣的。

只是檔案中各種東西的佈局是一樣的。

#define IMAGE_SIZEOF_SIGNATURE               4
#define IMAGE_SIZEOF_FILE_HEADER             20
#define IMAGE_SIZEOF_NT_OPTIONAL32_HEADER    224


#define IMAGE_NT_OPTIONAL_HDR32_MAGIC      0x10b
#define IMAGE_NT_OPTIONAL_HDR64_MAGIC      0x20b
#define IMAGE_ROM_OPTIONAL_HDR_MAGIC       0x107
#define IMAGE_SIZEOF_NT_OPTIONAL_HEADER     IMAGE_SIZEOF_NT_OPTIONAL32_HEADER
#define IMAGE_NT_OPTIONAL_HDR_MAGIC         IMAGE_NT_OPTIONAL_HDR32_MAGIC


char szDataDirectory[ 16] [ 64] = 
{ 
    "Export Directory" , 
    "Import Directory" , 
    "Resource Directory" , 
    "Exception Directory" , 
    "Security Directory" , 
    "Base Relocation Table" , 
    "Debug Directory" , 
    "Architecture Specific Data" , 
    "RVA of GP" , 
    "TLS Directory" , 
    "Load Configuration Directory" , 
    "Bound Import Directory in headers" , 
    "Import Address Table" , 
    "Delay Load Import Descriptors" , 
    "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_NT_HEADERS 
{
         DWORD Signature;                         **PE檔案標識 "PE",0,0
         IMAGE_FILE_HEADER FileHeader;            **映像檔案頭 (其中的NumberOfSections成員指定了Sections的個數)
         IMAGE_OPTIONAL_HEADER32 OptionalHeader;  **映像可選頭
 } IMAGE_NT_HEADERS32, *PIMAGE_NT_HEADERS32;




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_OPTIONAL_HEADER 
{
    // Standard fields.
    WORD    Magic;
    BYTE    MajorLinkerVersion;
    BYTE    MinorLinkerVersion;
    DWORD   SizeOfCode;
    DWORD   SizeOfInitializedData;
    DWORD   SizeOfUninitializedData;
    DWORD   AddressOfEntryPoint;
    DWORD   BaseOfCode;
    DWORD   BaseOfData;
    //
    // NT additional fields.
    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_HEADER32, *PIMAGE_OPTIONAL_HEADER32;



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




typedef struct _IMAGE_SECTION_HEADER
 {
    BYTE    Name[IMAGE_SIZEOF_SHORT_NAME]; 8 bytes
    union {
            DWORD   PhysicalAddress;
            DWORD   VirtualSize;
    } Misc; 4 bytes 
    DWORD   VirtualAddress;
    DWORD   SizeOfRawData;
    DWORD   PointerToRawData;
    DWORD   PointerToRelocations;
    DWORD   PointerToLinenumbers;
    WORD    NumberOfRelocations;
    WORD    NumberOfLinenumbers;
    DWORD   Characteristics;
} IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;  40 bytes


#define IMAGE_SIZEOF_SECTION_HEADER          40




#define IMAGE_SCN_LNK_NRELOC_OVFL            0x01000000  // Section contains extended relocations.
#define IMAGE_SCN_MEM_DISCARDABLE            0x02000000  // Section can be discarded.
#define IMAGE_SCN_MEM_NOT_CACHED             0x04000000  // Section is not cachable.
#define IMAGE_SCN_MEM_NOT_PAGED              0x08000000  // Section is not pageable.
#define IMAGE_SCN_MEM_SHARED                 0x10000000  // Section is shareable.
#define IMAGE_SCN_MEM_EXECUTE                0x20000000  // Section is executable.
#define IMAGE_SCN_MEM_READ                   0x40000000  // Section is readable.
#define IMAGE_SCN_MEM_WRITE                  0x80000000  // Section is writeable.


typedef struct _IMAGE_IMPORT_DESCRIPTOR 
{
    union 
    {
        DWORD   Characteristics;            // 0 for terminating null import descriptor
        DWORD   OriginalFirstThunk;         // RVA to original unbound IAT (PIMAGE_THUNK_DATA)
    };
    DWORD   TimeDateStamp;                  // 0 if not bound,
                                            // -1 if bound, and real date\time stamp
                                            //     in IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT (new BIND)
                                            // O.W. date/time stamp of DLL bound to (Old BIND)
    DWORD   ForwarderChain;                 // -1 if no forwarders
    DWORD   Name;
    DWORD   FirstThunk;                     // RVA to IAT (if bound this IAT has actual addresses)
} IMAGE_IMPORT_DESCRIPTOR;




// Export Format


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;


//
// Import Format


typedef struct _IMAGE_IMPORT_BY_NAME 
{
    WORD    Hint;
    BYTE    Name[1];
} IMAGE_IMPORT_BY_NAME, *PIMAGE_IMPORT_BY_NAME;


typedef struct _IMAGE_THUNK_DATA32 
{
    union {
        PBYTE  ForwarderString;
        PDWORD Function;
        DWORD Ordinal;
        PIMAGE_IMPORT_BY_NAME  AddressOfData;
    } u1;
} IMAGE_THUNK_DATA32;
 

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