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OptionalHeader.cpp
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OptionalHeader.cpp
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#include "stdafx.h"
#include "OptionalHeader.h"
#include "PeCommon.h"
#include "PeErrors.h"
#include "PeFile.h"
vector<ValueDescription> SubsystemFlags = {
{0, "IMAGE_SUBSYSTEM_UNKNOWN"},
{1, "IMAGE_SUBSYSTEM_NATIVE"},
{2, "IMAGE_SUBSYSTEM_WINDOWS_GUI"},
{3, "IMAGE_SUBSYSTEM_WINDOWS_CUI"},
{7, "IMAGE_SUBSYSTEM_POSIX_CUI"},
{9, "IMAGE_SUBSYSTEM_WINDOWS_CE_GUI"},
{10, "IMAGE_SUBSYSTEM_EFI_APPLICATION"},
{11, "IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER"},
{12, "IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER"},
{13, "IMAGE_SUBSYSTEM_EFI_ROM"},
{14, "IMAGE_SUBSYSTEM_XBOX"},
};
vector<ValueDescription> DllCharacteristicsFlags = {
{0x0020, "IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA"},
{0x0040, "IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE"},
{0x0080, "IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY"},
{0x0100, "IMAGE_DLLCHARACTERISTICS_NX_COMPAT"},
{0x0200, "IMAGE_DLLCHARACTERISTICS_NO_ISOLATION"},
{0x0400, "IMAGE_DLLCHARACTERISTICS_NO_SEH"},
{0x0800, "IMAGE_DLLCHARACTERISTICS_NO_BIND"},
{0x1000, "IMAGE_DLLCHARACTERISTICS_APPCONTAINER"},
{0x2000, "IMAGE_DLLCHARACTERISTICS_WDM_DRIVER"},
{0x4000, "IMAGE_DLLCHARACTERISTICS_GUARD_CF"},
{0x8000, "IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE"},
};
vector<string> DataDirectoryNames = {
"Export",
"Import",
"Resource",
"Exception",
"Certificate",
"Base Relocation",
"Debug",
"Reserved",
"Global Ptr",
"TLS",
"Load Config",
"Bound Import",
"IAT",
"Delay Import Descriptor",
"CLR Runtime Header",
"Reserved"
};
UINT OptionalHeader::ReadOptionalHeader(const PeFile& peFile, DWORD64 fileOffset)
{
UINT ret = PE_SUCCESS;
fstream in(peFile.GetPeFilePath(), fstream::binary | fstream::in);
if (!in)
return PE_FILE_OPEN_ERROR;
// Store the file address of Optional Header
FileAddress = fileOffset;
// Move file pointer to Optional header
in.seekg(FileAddress, ios_base::beg);
COPY_AND_CHECK_RETURN_STATUS(in, Magic);
COPY_AND_CHECK_RETURN_STATUS(in, MajorLinkerVersion);
COPY_AND_CHECK_RETURN_STATUS(in, MinorLinkerVersion);
COPY_AND_CHECK_RETURN_STATUS(in, SizeOfCode);
COPY_AND_CHECK_RETURN_STATUS(in, SizeOfInitializedData);
COPY_AND_CHECK_RETURN_STATUS(in, SizeOfUninitializedData);
COPY_AND_CHECK_RETURN_STATUS(in, AddressOfEntryPoint);
COPY_AND_CHECK_RETURN_STATUS(in, BaseOfCode);
if (Magic == 0x10b) // PE32
COPY_AND_CHECK_RETURN_STATUS(in, BaseOfData);
COPY_WITH_SIZE_AND_CHECK_RETURN_STATUS(in, ImageBase, Magic == 0x10b ? 4 : 8);
COPY_AND_CHECK_RETURN_STATUS(in, SectionAlignment);
COPY_AND_CHECK_RETURN_STATUS(in, FileAlignment);
COPY_AND_CHECK_RETURN_STATUS(in, MajorOperatingSystemVersion);
COPY_AND_CHECK_RETURN_STATUS(in, MinorOperatingSystemVersion);
COPY_AND_CHECK_RETURN_STATUS(in, MajorImageVersion);
COPY_AND_CHECK_RETURN_STATUS(in, MinorImageVersion);
COPY_AND_CHECK_RETURN_STATUS(in, MajorSubsystemVersion);
COPY_AND_CHECK_RETURN_STATUS(in, MinorSubsystemVersion);
COPY_AND_CHECK_RETURN_STATUS(in, Win32VersionValue);
COPY_AND_CHECK_RETURN_STATUS(in, SizeOfImage);
COPY_AND_CHECK_RETURN_STATUS(in, SizeOfHeaders);
COPY_AND_CHECK_RETURN_STATUS(in, CheckSum);
COPY_AND_CHECK_RETURN_STATUS(in, Subsystem);
COPY_AND_CHECK_RETURN_STATUS(in, DllCharacteristics);
COPY_WITH_SIZE_AND_CHECK_RETURN_STATUS(in, SizeOfStackReserve, Magic == 0x10b ? 4 : 8);
COPY_WITH_SIZE_AND_CHECK_RETURN_STATUS(in, SizeOfStackCommit, Magic == 0x10b ? 4 : 8);
COPY_WITH_SIZE_AND_CHECK_RETURN_STATUS(in, SizeOfHeapReserve, Magic == 0x10b ? 4 : 8);
COPY_WITH_SIZE_AND_CHECK_RETURN_STATUS(in, SizeOfHeapCommit, Magic == 0x10b ? 4 : 8);
COPY_AND_CHECK_RETURN_STATUS(in, LoaderFlags);
COPY_AND_CHECK_RETURN_STATUS(in, NumberOfRvaAndSizes);
// Read data directory entries - They refer to specific tables which are contained in the sections
// following these entries.
//
// NumberOfRvaAndSizes. This field identifies the length of the DataDirectory
// array that follows. It is important to note that this field is used to
// identify the size of the array, not the number of valid entries in the
// array.
for (DWORD i = 0; i < min(NumberOfRvaAndSizes, IMAGE_NUMBEROF_DIRECTORY_ENTRIES); i++) {
streampos dataDirectoryFA = in.tellg();
DataDirectories[i].FileAddress = dataDirectoryFA;
COPY_AND_CHECK_RETURN_STATUS(in, DataDirectories[i].VirtualAddress);
COPY_AND_CHECK_RETURN_STATUS(in, DataDirectories[i].Size);
DataDirectories[i].Index = i;
}
streampos end = in.tellg();
BlockSize = static_cast<DWORD64>(end) - FileAddress;
return ret;
}
void OptionalHeader::DumpOptionalHeader(const PeFile& peFile)
{
cout << "Dumping Optional Header" << endl;
printf(" %-30s: %x\n", "Magic", Magic);
printf(" %-30s: %x\n", "MajorLinkerVersion", MajorLinkerVersion);
printf(" %-30s: %x\n", "MinorLinkerVersion", MinorLinkerVersion);
printf(" %-30s: %lx\n", "SizeOfCode", SizeOfCode);
printf(" %-30s: %lx\n", "SizeOfInitializedData", SizeOfInitializedData);
printf(" %-30s: %lx\n", "SizeOfUninitializedData", SizeOfUninitializedData);
printf(" %-30s: %#.lx\n", "AddressOfEntryPoint", AddressOfEntryPoint);
printf(" %-30s: %lx\n", "BaseOfCode", BaseOfCode);
if (Magic == 0x10b) // PE32
printf(" %-30s: %lx\n", "BaseOfData", BaseOfData);
printf(" %-30s: %#.llx\n", "ImageBase", ImageBase);
printf(" %-30s: %lx\n", "SectionAlignment", SectionAlignment);
printf(" %-30s: %lx\n", "FileAlignment", FileAlignment);
printf(" %-30s: %x\n", "MajorOperatingSystemVersion", MajorOperatingSystemVersion);
printf(" %-30s: %x\n", "MinorOperatingSystemVersion", MinorOperatingSystemVersion);
printf(" %-30s: %x\n", "MajorImageVersion", MajorImageVersion);
printf(" %-30s: %x\n", "MinorImageVersion", MinorImageVersion);
printf(" %-30s: %x\n", "MajorSubsystemVersion", MajorSubsystemVersion);
printf(" %-30s: %x\n", "MinorSubsystemVersion", MinorSubsystemVersion);
printf(" %-30s: %lx\n", "Win32VersionValue", Win32VersionValue);
printf(" %-30s: %lx\n", "SizeOfImage", SizeOfImage);
printf(" %-30s: %lx\n", "SizeOfHeaders", SizeOfHeaders);
printf(" %-30s: %lx\n", "CheckSum", CheckSum);
printf(" %-30s: %s\n", "Subsystem", ValueToDescription(SubsystemFlags, Subsystem, FALSE).c_str());
printf(" %-30s: %s\n", "DllCharacteristics", ValueToDescription(DllCharacteristicsFlags, DllCharacteristics, TRUE).c_str());
printf(" %-30s: %llx\n", "SizeOfStackReserve", SizeOfStackReserve);
printf(" %-30s: %llx\n", "SizeOfStackCommit", SizeOfStackCommit);
printf(" %-30s: %llx\n", "SizeOfHeapReserve", SizeOfHeapReserve);
printf(" %-30s: %llx\n", "SizeOfHeapCommit", SizeOfHeapCommit);
printf(" %-30s: %lx\n", "LoaderFlags", LoaderFlags);
printf(" %-30s: %lx\n", "NumberOfRvaAndSizes", NumberOfRvaAndSizes);
printf(" Data Directories\n");
for (DWORD i = 0; i < min(NumberOfRvaAndSizes, IMAGE_NUMBEROF_DIRECTORY_ENTRIES); i++) {
printf(" %2d. %-25s| %-6s: %-10lx| %-15s: %#.lx| %-15s: %#.lx|\n",
i, DataDirectoryNames[DataDirectories[i].Index].c_str(),
"Size", DataDirectories[i].Size,
"Virutal Address(RVA)", DataDirectories[i].VirtualAddress,
"File Address", peFile.RvaToFa(DataDirectories[i].VirtualAddress));
if (DataDirectories[i].Size > 0) {
HexDump(peFile.GetPeFilePath(), DataDirectories[i].FileAddress, min(DataDirectories[i].Size, 32));
}
}
}