// referenced from https://stackoverflow.com/a/8711036/147511
// see also: https://pastebin.com/pZL3Y7vM

[StructLayout(LayoutKind.Explicit)]
public struct COFF_PE
{
    [FieldOffset(0x00)] public uint _PE_SIG;
    [FieldOffset(0x04)] public ImageFileMachine MachineType;
    [FieldOffset(0x06)] public ushort NumberOfSections;
    [FieldOffset(0x08)] public uint TimeDateStamp;
    [FieldOffset(0x0C)] public uint PointerToSymbolTable;
    [FieldOffset(0x10)] public uint NumberOfSymbols;
    [FieldOffset(0x14)] public ushort SizeOfOptionalHeader;
    [FieldOffset(0x16)] public ImageFileCharacteristics Characteristics;
    [FieldOffset(0x18)] public ushort Magic;
    [FieldOffset(0x1A)] public byte MajorLinkerVersion;
    [FieldOffset(0x1B)] public byte MinorLinkerVersion;
    [FieldOffset(0x1C)] public uint SizeOfCode;
    [FieldOffset(0x20)] public uint SizeOfInitializedData;
    [FieldOffset(0x24)] public uint SizeOfUninitializedData;
    [FieldOffset(0x28)] public uint AddressOfEntryPoint;
    [FieldOffset(0x2C)] public uint BaseOfCode;
    [FieldOffset(0x30)] public ulong __mixed;
    [FieldOffset(0x38)] public uint SectionAlignment;
    [FieldOffset(0x3C)] public uint FileAlignment;
    [FieldOffset(0x40)] public ushort MajorOperatingSystemVersion;
    [FieldOffset(0x42)] public ushort MinorOperatingSystemVersion;
    [FieldOffset(0x44)] public ushort MajorImageVersion;
    [FieldOffset(0x46)] public ushort MinorImageVersion;
    [FieldOffset(0x48)] public ushort MajorSubsystemVersion;
    [FieldOffset(0x4A)] public ushort MinorSubsystemVersion;
    [FieldOffset(0x4C)] public uint Win32VersionValue;
    [FieldOffset(0x50)] public uint SizeOfImage;
    [FieldOffset(0x54)] public uint SizeOfHeaders;
    [FieldOffset(0x58)] public uint CheckSum;
    [FieldOffset(0x5C)] public Subsystem Subsystem;
    [FieldOffset(0x5E)] public DllCharacteristics DllCharacteristics;
};