寫在前面
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在winnt.h頭文件中有定義，32位win程序的PE結構和64位win程序的有所不同，但區別不大。
☀️ PE文件的整體結構
☀️ PE文件的兩種狀態
紅色表示更多的空白
☀️ RVA與FOA轉化
- 如果文件對齊和文件對齊相同，則
FOA==RVA。 - 得到RVA的值:內存地址 – ImageBase
- 判斷RVA是否位於PE頭中，如果是:
FOA==RVA - 判斷RVA位於哪個節:
RVA>=節.VirtualAddress
RVA<=節.VirtualAddress +當前節內存對齊后的大小
差值=RVA - 節.VirtualAddress
☀️ 空白區添加代碼
1️⃣ 構造要寫入的代碼
【注】call指令后面的硬編碼數據 = 要跳轉的地址 - 指令當前的地址 - 5
2️⃣ 在PE的空白區構造一段代碼（比如節表之間的空間）
3️⃣ 修改入口地址為新增代碼
4️⃣ 新增代碼執行后，跳回入口地址
☀️ 擴大節的步驟
1️⃣ 分配一塊新的空間，大小為S
2️⃣ 將最后一個節的SizeOfRawData和VirtualSize改成N
N =(SizeOfRawData或者VirtualSize內存對齊后的值)+S
3️⃣ 修改SizeOflmage大小
☀️ 新增節的步驟
1️⃣ 判斷是否有足夠的空間，可以添加一個節表
2️⃣ 在節表中新增一個成員
3️⃣ 修改PE頭中節的數量
4️⃣ 修改sizeOflmage的大小
5️⃣ 再原有數據的最后，新增一個節的數據(內存對齊的整數倍)
6️⃣ 修正新增節表的屬性
☀️ 合並節的步驟
1️⃣ 按照內存對齊展開
2️⃣ 將第一個節的內存大小、文件大小改成一樣
Max = SizeOfRawData>VirtualSize?SizeOfRawData:VirtualSize
SizeOfRawData = VirtualSize = 最后一個節的VirtualAddress + Max - SizeOfHeaders內存對齊后的大小
3️⃣ 將第一個節的屬性改為包含所有節的屬性.
4️⃣ 修改節的數量.
☀️ IMAGE_DOS_HEADER（64個字節）
這個結構體是給16位dos程序看的（e_magic 和 e_lfanew 例外）
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;
1️⃣ e_magic PE指紋的第一部分，值為IMAGE_DOS_SIGNATURE/0x5A4D/"MZ"。
2️⃣ e_lfanew 指向PE頭的偏移。
☀️ Dos Stub（Dos塊）
是編譯器生成的，沒有啥用處，可以隨意修改。
☀️ IMAGE_NT_HEADERS
typedef struct _IMAGE_NT_HEADERS {
DWORD Signature;
IMAGE_FILE_HEADER FileHeader;
IMAGE_OPTIONAL_HEADER32 OptionalHeader;
} IMAGE_NT_HEADERS32, *PIMAGE_NT_HEADERS32;
typedef struct _IMAGE_NT_HEADERS64 {
DWORD Signature;
IMAGE_FILE_HEADER FileHeader;
IMAGE_OPTIONAL_HEADER64 OptionalHeader;
} IMAGE_NT_HEADERS64, *PIMAGE_NT_HEADERS64;
1️⃣ Signature PE指紋的第二部分，值為IMAGE_NT_SIGNATURE/0x00004550/"PE"。
2️⃣ FileHeader 標准PE頭，大小為20個字節，可以通過IMAGE_SIZEOF_FILE_HEADER宏獲取。
3️⃣ OptionalHeader 擴展PE頭。
☀️ IMAGE_FILE_HEADER
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;
1️⃣ Machine 可以運行在什么樣的CPU上。
任意CPU：IMAGE_FILE_MACHINE_UNKNOWN/0x0000；
Intel 386以及后續CPU: IMAGE_FILE_MACHINE_I386/0x014C；
x64:IMAGE_FILE_MACHINE_AMD64/0x8664。
下面是其中的所有成員:
#define IMAGE_FILE_MACHINE_UNKNOWN 0
#define IMAGE_FILE_MACHINE_TARGET_HOST 0x0001 // Useful for indicating we want to interact with the host and not a WoW guest.
#define IMAGE_FILE_MACHINE_I386 0x014c // Intel 386.
#define IMAGE_FILE_MACHINE_R3000 0x0162 // MIPS little-endian, 0x160 big-endian
#define IMAGE_FILE_MACHINE_R4000 0x0166 // MIPS little-endian
#define IMAGE_FILE_MACHINE_R10000 0x0168 // MIPS little-endian
#define IMAGE_FILE_MACHINE_WCEMIPSV2 0x0169 // MIPS little-endian WCE v2
#define IMAGE_FILE_MACHINE_ALPHA 0x0184 // Alpha_AXP
#define IMAGE_FILE_MACHINE_SH3 0x01a2 // SH3 little-endian
#define IMAGE_FILE_MACHINE_SH3DSP 0x01a3
#define IMAGE_FILE_MACHINE_SH3E 0x01a4 // SH3E little-endian
#define IMAGE_FILE_MACHINE_SH4 0x01a6 // SH4 little-endian
#define IMAGE_FILE_MACHINE_SH5 0x01a8 // SH5
#define IMAGE_FILE_MACHINE_ARM 0x01c0 // ARM Little-Endian
#define IMAGE_FILE_MACHINE_THUMB 0x01c2 // ARM Thumb/Thumb-2 Little-Endian
#define IMAGE_FILE_MACHINE_ARMNT 0x01c4 // ARM Thumb-2 Little-Endian
#define IMAGE_FILE_MACHINE_AM33 0x01d3
#define IMAGE_FILE_MACHINE_POWERPC 0x01F0 // IBM PowerPC Little-Endian
#define IMAGE_FILE_MACHINE_POWERPCFP 0x01f1
#define IMAGE_FILE_MACHINE_IA64 0x0200 // Intel 64
#define IMAGE_FILE_MACHINE_MIPS16 0x0266 // MIPS
#define IMAGE_FILE_MACHINE_ALPHA64 0x0284 // ALPHA64
#define IMAGE_FILE_MACHINE_MIPSFPU 0x0366 // MIPS
#define IMAGE_FILE_MACHINE_MIPSFPU16 0x0466 // MIPS
#define IMAGE_FILE_MACHINE_AXP64 IMAGE_FILE_MACHINE_ALPHA64
#define IMAGE_FILE_MACHINE_TRICORE 0x0520 // Infineon
#define IMAGE_FILE_MACHINE_CEF 0x0CEF
#define IMAGE_FILE_MACHINE_EBC 0x0EBC // EFI Byte Code
#define IMAGE_FILE_MACHINE_AMD64 0x8664 // AMD64 (K8)
#define IMAGE_FILE_MACHINE_M32R 0x9041 // M32R little-endian
#define IMAGE_FILE_MACHINE_ARM64 0xAA64 // ARM64 Little-Endian
#define IMAGE_FILE_MACHINE_CEE 0xC0EE
2️⃣ NumberOfSections 節的數量。
3️⃣ TimeDateStamp 編譯器填寫的時間戳與文件屬性里面創建時間/修改時間無關，計算的是當前時間與1970年0時0點0分差的秒數。
4️⃣ PointerToSymbolTable / NumberOfSymbols 調試相關。
5️⃣ SizeOfOptionalHeader 擴展PE頭的大小，可以修改合適的數值(默認情況下，32位PE文件:0xE0，64位PE文件:0xF0)。
6️⃣ Characteristics 文件屬性。所有的成員如下：
#define IMAGE_FILE_RELOCS_STRIPPED 0x0001 // Relocation info stripped from file.
#define IMAGE_FILE_EXECUTABLE_IMAGE 0x0002 // File is executable (i.e. no unresolved external references).
#define IMAGE_FILE_LINE_NUMS_STRIPPED 0x0004 // Line nunbers stripped from file.
#define IMAGE_FILE_LOCAL_SYMS_STRIPPED 0x0008 // Local symbols stripped from file.
#define IMAGE_FILE_AGGRESIVE_WS_TRIM 0x0010 // Aggressively trim working set
#define IMAGE_FILE_LARGE_ADDRESS_AWARE 0x0020 // App can handle >2gb addresses
#define IMAGE_FILE_BYTES_REVERSED_LO 0x0080 // Bytes of machine word are reversed.
#define IMAGE_FILE_32BIT_MACHINE 0x0100 // 32 bit word machine.
#define IMAGE_FILE_DEBUG_STRIPPED 0x0200 // Debugging info stripped from file in .DBG file
#define IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP 0x0400 // If Image is on removable media, copy and run from the swap file.
#define IMAGE_FILE_NET_RUN_FROM_SWAP 0x0800 // If Image is on Net, copy and run from the swap file.
#define IMAGE_FILE_SYSTEM 0x1000 // System File.
#define IMAGE_FILE_DLL 0x2000 // File is a DLL.
#define IMAGE_FILE_UP_SYSTEM_ONLY 0x4000 // File should only be run on a UP machine
#define IMAGE_FILE_BYTES_REVERSED_HI 0x8000 // Bytes of machine word are reversed.
☀️ IMAGE_OPTIONAL_HEADER
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; //調試相關
DWORD NumberOfRvaAndSizes; //目錄表的個數（決定DataDirectory數組長度）
IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
} IMAGE_OPTIONAL_HEADER32, *PIMAGE_OPTIONAL_HEADER32;
typedef struct _IMAGE_OPTIONAL_HEADER64 {
WORD Magic;
BYTE MajorLinkerVersion;
BYTE MinorLinkerVersion;
DWORD SizeOfCode;
DWORD SizeOfInitializedData;
DWORD SizeOfUninitializedData;
DWORD AddressOfEntryPoint;
DWORD BaseOfCode;
ULONGLONG 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;
ULONGLONG SizeOfStackReserve;
ULONGLONG SizeOfStackCommit;
ULONGLONG SizeOfHeapReserve;
ULONGLONG SizeOfHeapCommit;
DWORD LoaderFlags;
DWORD NumberOfRvaAndSizes;
IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
} IMAGE_OPTIONAL_HEADER64, *PIMAGE_OPTIONAL_HEADER64;
#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16
1️⃣ Magic 標識程序的位數。
32位程序為值為IMAGE_NT_OPTIONAL_HDR32_MAGIC/0x10b。
64位程序為值為IMAGE_NT_OPTIONAL_HDR64_MAGIC/0x20b。
2️⃣ AddressOfEntryPoint 程序入口，十分重要。
3️⃣ ImageBase 內存鏡像基址。
4️⃣ SectionAlignment 內存對齊。
5️⃣ FileAlignment 文件對齊。
6️⃣ SizeOfImage 內存中整個PE文件的映射的尺寸，可比實際的值大，必須是SectionAlignment的整數倍。
7️⃣ SizeOfHeaders 所有頭和節表按照文件對齊后的大小，否則加載會出錯。
8️⃣ CheckSum 校驗和，一些系統文件有要求用來判斷文件是否被修改。
9️⃣ Subsystem 子系統，驅動程序值為1，圖形界面值為2，控制台、DLL值為3。下面是其枚舉：
#define IMAGE_SUBSYSTEM_UNKNOWN 0 // Unknown subsystem.
#define IMAGE_SUBSYSTEM_NATIVE 1 // Image doesn't require a subsystem.
#define IMAGE_SUBSYSTEM_WINDOWS_GUI 2 // Image runs in the Windows GUI subsystem.
#define IMAGE_SUBSYSTEM_WINDOWS_CUI 3 // Image runs in the Windows character subsystem.
#define IMAGE_SUBSYSTEM_OS2_CUI 5 // image runs in the OS/2 character subsystem.
#define IMAGE_SUBSYSTEM_POSIX_CUI 7 // image runs in the Posix character subsystem.
#define IMAGE_SUBSYSTEM_NATIVE_WINDOWS 8 // image is a native Win9x driver.
#define IMAGE_SUBSYSTEM_WINDOWS_CE_GUI 9 // Image runs in the Windows CE subsystem.
#define IMAGE_SUBSYSTEM_EFI_APPLICATION 10 //
#define IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER 11 //
#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12 //
#define IMAGE_SUBSYSTEM_EFI_ROM 13
#define IMAGE_SUBSYSTEM_XBOX 14
#define IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION 16
#define IMAGE_SUBSYSTEM_XBOX_CODE_CATALOG 17
1️⃣0️⃣ DllCharacteristics文件特性不是針對DLL文件的。下面是其枚舉：
// IMAGE_LIBRARY_PROCESS_INIT 0x0001 // Reserved.
// IMAGE_LIBRARY_PROCESS_TERM 0x0002 // Reserved.
// IMAGE_LIBRARY_THREAD_INIT 0x0004 // Reserved.
// IMAGE_LIBRARY_THREAD_TERM 0x0008 // Reserved.
#define IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA 0x0020 // Image can handle a high entropy 64-bit virtual address space.
#define IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE 0x0040 // DLL can move.
#define IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY 0x0080 // Code Integrity Image
#define IMAGE_DLLCHARACTERISTICS_NX_COMPAT 0x0100 // Image is NX compatible
#define IMAGE_DLLCHARACTERISTICS_NO_ISOLATION 0x0200 // Image understands isolation and doesn't want it
#define IMAGE_DLLCHARACTERISTICS_NO_SEH 0x0400 // Image does not use SEH. No SE handler may reside in this image
#define IMAGE_DLLCHARACTERISTICS_NO_BIND 0x0800 // Do not bind this image.
#define IMAGE_DLLCHARACTERISTICS_APPCONTAINER 0x1000 // Image should execute in an AppContainer
#define IMAGE_DLLCHARACTERISTICS_WDM_DRIVER 0x2000 // Driver uses WDM model
#define IMAGE_DLLCHARACTERISTICS_GUARD_CF 0x4000 // Image supports Control Flow Guard.
#define IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
1️⃣1️⃣DataDirectory 存儲表位置大小的數組。不同的索引代表不同的表的數據，下面是其枚舉：
#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
☀️ IMAGE_SECTION_HEADER
1️⃣ 大小可通過
IMAGE_SIZEOF_SECTION_HEADER獲取
2️⃣在內存的展開大小 = Max(Misc,SizeOfRawData)。如果此節為已初始化的變量，則Misc > SizeOfRawData；若節為未初始化的變量則Misc < SizeOfRawData。
#define IMAGE_SIZEOF_SHORT_NAME 8
typedef struct _IMAGE_SECTION_HEADER {
BYTE Name[IMAGE_SIZEOF_SHORT_NAME];
union {
DWORD PhysicalAddress;
DWORD VirtualSize;
} Misc;
DWORD VirtualAddress;
DWORD SizeOfRawData;
DWORD PointerToRawData;
DWORD PointerToRelocations;
DWORD PointerToLinenumbers;
WORD NumberOfRelocations;
WORD NumberOfLinenumbers;
DWORD Characteristics;
} IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER;
1️⃣ Name ASCII字符串，可自定義，只截取8個。
2️⃣ Misc 該節在沒有對齊前的真實尺寸，該值可以不准確。
3️⃣ VirtualAddress 在內存中的偏移地址,加上lmageBase才是在內存中的真正地址。
4️⃣ PointerToRawData 節區在文件中的偏移。
5️⃣ PointerToRelocations / PointerToRelocations / NumberOfRelocations / PointerToLinenumbers 調試相關。
6️⃣ Characteristics 節的屬性。下面是其枚舉：
// IMAGE_SCN_TYPE_REG 0x00000000 // Reserved.
// IMAGE_SCN_TYPE_DSECT 0x00000001 // Reserved.
// IMAGE_SCN_TYPE_NOLOAD 0x00000002 // Reserved.
// IMAGE_SCN_TYPE_GROUP 0x00000004 // Reserved.
#define IMAGE_SCN_TYPE_NO_PAD 0x00000008 // Reserved.
// IMAGE_SCN_TYPE_COPY 0x00000010 // Reserved.
#define IMAGE_SCN_CNT_CODE 0x00000020 // Section contains code.
#define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 // Section contains initialized data.
#define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 // Section contains uninitialized data.
#define IMAGE_SCN_LNK_OTHER 0x00000100 // Reserved.
#define IMAGE_SCN_LNK_INFO 0x00000200 // Section contains comments or some other type of information.
// IMAGE_SCN_TYPE_OVER 0x00000400 // Reserved.
#define IMAGE_SCN_LNK_REMOVE 0x00000800 // Section contents will not become part of image.
#define IMAGE_SCN_LNK_COMDAT 0x00001000 // Section contents comdat.
// 0x00002000 // Reserved.
// IMAGE_SCN_MEM_PROTECTED - Obsolete 0x00004000
#define IMAGE_SCN_NO_DEFER_SPEC_EXC 0x00004000 // Reset speculative exceptions handling bits in the TLB entries for this section.
#define IMAGE_SCN_GPREL 0x00008000 // Section content can be accessed relative to GP
#define IMAGE_SCN_MEM_FARDATA 0x00008000
// IMAGE_SCN_MEM_SYSHEAP - Obsolete 0x00010000
#define IMAGE_SCN_MEM_PURGEABLE 0x00020000
#define IMAGE_SCN_MEM_16BIT 0x00020000
#define IMAGE_SCN_MEM_LOCKED 0x00040000
#define IMAGE_SCN_MEM_PRELOAD 0x00080000
#define IMAGE_SCN_ALIGN_1BYTES 0x00100000 //
#define IMAGE_SCN_ALIGN_2BYTES 0x00200000 //
#define IMAGE_SCN_ALIGN_4BYTES 0x00300000 //
#define IMAGE_SCN_ALIGN_8BYTES 0x00400000 //
#define IMAGE_SCN_ALIGN_16BYTES 0x00500000 // Default alignment if no others are specified.
#define IMAGE_SCN_ALIGN_32BYTES 0x00600000 //
#define IMAGE_SCN_ALIGN_64BYTES 0x00700000 //
#define IMAGE_SCN_ALIGN_128BYTES 0x00800000 //
#define IMAGE_SCN_ALIGN_256BYTES 0x00900000 //
#define IMAGE_SCN_ALIGN_512BYTES 0x00A00000 //
#define IMAGE_SCN_ALIGN_1024BYTES 0x00B00000 //
#define IMAGE_SCN_ALIGN_2048BYTES 0x00C00000 //
#define IMAGE_SCN_ALIGN_4096BYTES 0x00D00000 //
#define IMAGE_SCN_ALIGN_8192BYTES 0x00E00000 //
// Unused 0x00F00000
#define IMAGE_SCN_ALIGN_MASK 0x00F00000
#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.
☀️ IMAGE_DATA_DIRECTORY
typedef struct _IMAGE_DATA_DIRECTORY {
DWORD VirtualAddress;
DWORD Size;
} IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;
1️⃣ VirtualAddress 表在內存的RVA。
2️⃣ Size 表的大小，是指IMAGE_EXPORT_DIRECTORY結構體和其使用的所有數據之和，該值不會影響程序的運行。
☀️ IMAGE_EXPORT_DIRECTORY
typedef struct _IMAGE_EXPORT_DIRECTORY {
DWORD Characteristics; //未使用
DWORD TimeDateStamp; //時間戳
WORD MajorVersion; //未使用
WORD MinorVersion; //未使用
DWORD Name; //指向該導出表文件名字符串的輔助性信息
DWORD Base; //導出函數起始序號
DWORD NumberOfFunctions; //所有導出函數的個數，但在導出函數序號不按套路出牌，可能不准確
DWORD NumberOfNames; //以函數名字導出的函數個數
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;
1️⃣ AddressOfFunctions 指向的表的成員的大小是4個字節。
2️⃣ AddressOfNames 指向的表的成員每一個以'\0'結束，以字符排序來進行。
3️⃣ AddressOfNameOrdinals 指向的表是給AddressOfNames看的，每一個對應在AddressOfFunctions的索引位置。
☀️ IMAGE_IMPORT_DESCRIPTOR（大小為20個字節）
這結構體一個挨着一個，以空結構體為結尾（內容全為0的
IMAGE_IMPORT_DESCRIPTOR）。
typedef struct _IMAGE_IMPORT_DESCRIPTOR {
union {
DWORD Characteristics; // 0 for terminating null import descriptor
DWORD OriginalFirstThunk; // RVA to original unbound IAT (PIMAGE_THUNK_DATA)
} DUMMYUNIONNAME;
DWORD TimeDateStamp; //時間戳
DWORD ForwarderChain; //不使用
DWORD Name; //指向Ascii字符串
DWORD FirstThunk; // RVA to IAT (if bound this IAT has actual addresses)
} IMAGE_IMPORT_DESCRIPTOR;
typedef IMAGE_IMPORT_DESCRIPTOR UNALIGNED *PIMAGE_IMPORT_DESCRIPTOR;
0️⃣ 圖解OriginalFirstThunk
☀️ IMAGE_THUNK_DATA
typedef struct _IMAGE_THUNK_DATA32 {
union {
DWORD ForwarderString; // PBYTE
DWORD Function; // PDWORD
DWORD Ordinal;
DWORD AddressOfData; // PIMAGE_IMPORT_BY_NAME
} u1;
} IMAGE_THUNK_DATA32;
typedef IMAGE_THUNK_DATA32 * PIMAGE_THUNK_DATA32;
typedef struct _IMAGE_THUNK_DATA64 {
union {
ULONGLONG ForwarderString; // PBYTE
ULONGLONG Function; // PDWORD
ULONGLONG Ordinal;
ULONGLONG AddressOfData; // PIMAGE_IMPORT_BY_NAME
} u1;
} IMAGE_THUNK_DATA64;
typedef IMAGE_THUNK_DATA64 * PIMAGE_THUNK_DATA64;
☀️ IMAGE_IMPORT_BY_NAME
typedef struct _IMAGE_IMPORT_BY_NAME {
WORD Hint;
CHAR Name[1];
} IMAGE_IMPORT_BY_NAME, *PIMAGE_IMPORT_BY_NAME;
☀️ IAT與INT
- PE加載前
- PE加載后
☀️ IMAGE_BASE_RELOCATION (重定位表)
typedef struct _IMAGE_BASE_RELOCATION {
DWORD VirtualAddress;
DWORD SizeOfBlock;
// WORD TypeOffset[1];
} IMAGE_BASE_RELOCATION;
typedef IMAGE_BASE_RELOCATION UNALIGNED * PIMAGE_BASE_RELOCATION;
☀️ 重定位表說明
若一個
DWORD中的高4位為3，即為0011，則VirtualAddress + 其低12位為即為要修復的地址。
