#define ENABLE_LOGGING
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using RomCheater.Logging;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.ComponentModel;

namespace Sojaner.MemoryScanner
{
    public class PEReader
    {
        // Code (C) Sergey utilized from: http://www.sergeyakopov.com/2010/11/03/reading-pe-format-using-data-marshalling-in-net/
        #region Structs

        [Flags]
        public enum MachineTypeFlags
        {
            x86 = 0x14C,
            Alpha = 0x184,
            ARM = 0x1C0,
            MIPS16R3000 = 0x162,
            MIPS16R4000 = 0x166,
            MIPS16R10000 = 0x168,
            PowerPCLE = 0x1F0,
            PowerPCBE = 0x1F2,
            Itanium = 0x200,
            MIPS16 = 0x266,
            Alpha64 = 0x284,
            MIPSFPU = 0x366,
            MIPSFPU16 = 0x466,
            x64 = 0x8664,
        }
        public enum MagicType : ushort
        {
            NT_OPTIONAL_HEADER_NOT_PRESENT, // 0     
            NT_OPTIONAL_HEADER_32 = 0x10b,
            NT_OPTIONAL_HEADER_64 = 0x20b
        }
        public enum SubSystemType : ushort
        {
            IMAGE_SUBSYSTEM_UNKNOWN = 0,
            IMAGE_SUBSYSTEM_NATIVE = 1,
            IMAGE_SUBSYSTEM_WINDOWS_GUI = 2,
            IMAGE_SUBSYSTEM_WINDOWS_CUI = 3,
            IMAGE_SUBSYSTEM_POSIX_CUI = 7,
            IMAGE_SUBSYSTEM_WINDOWS_CE_GUI = 9,
            IMAGE_SUBSYSTEM_EFI_APPLICATION = 10,
            IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER = 11,
            IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER = 12,
            IMAGE_SUBSYSTEM_EFI_ROM = 13,
            IMAGE_SUBSYSTEM_XBOX = 14

        }
        public enum DllCharacteristicsType : ushort
        {
            RES_0 = 0x0001,
            RES_1 = 0x0002,
            RES_2 = 0x0004,
            RES_3 = 0x0008,
            IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE = 0x0040,
            IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY = 0x0080,
            IMAGE_DLL_CHARACTERISTICS_NX_COMPAT = 0x0100,
            IMAGE_DLLCHARACTERISTICS_NO_ISOLATION = 0x0200,
            IMAGE_DLLCHARACTERISTICS_NO_SEH = 0x0400,
            IMAGE_DLLCHARACTERISTICS_NO_BIND = 0x0800,
            RES_4 = 0x1000,
            IMAGE_DLLCHARACTERISTICS_WDM_DRIVER = 0x2000,
            IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE = 0x8000
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_DOS_HEADER
        {
            public UInt16 _e_magic;
            public UInt16 _e_cblp;
            public UInt16 _e_cp;
            public UInt16 _e_crlc;
            public UInt16 _e_cparhdr;
            public UInt16 _e_minalloc;
            public UInt16 _e_maxalloc;
            public UInt16 _e_ss;
            public UInt16 _e_sp;
            public UInt16 _e_csum;
            public UInt16 _e_ip;
            public UInt16 _e_cs;
            public UInt16 _e_lfarlc;
            public UInt16 _e_ovno;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public UInt16[] _e_res1;
            public UInt16 _e_oemid;
            public UInt16 _e_oeminfo;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
            public UInt16[] _e_res2;
            public UInt32 _e_lfanew;

            public string e_magic { get { return string.Format("0x{0:x4}", _e_magic); } }
            public string e_cblp { get { return string.Format("0x{0:x4}", _e_cblp); } }
            public string e_cp { get { return string.Format("0x{0:x4}", _e_cp); } }
            public string e_crlc { get { return string.Format("0x{0:x4}", _e_crlc); } }
            public string e_cparhdr { get { return string.Format("0x{0:x4}", _e_cparhdr); } }
            public string e_minalloc { get { return string.Format("0x{0:x4}", _e_minalloc); } }
            public string e_maxalloc { get { return string.Format("0x{0:x4}", _e_maxalloc); } }
            public string e_ss { get { return string.Format("0x{0:x4}", _e_ss); } }
            public string e_sp { get { return string.Format("0x{0:x4}", _e_sp); } }
            public string e_csum { get { return string.Format("0x{0:x4}", _e_csum); } }
            public string e_ip { get { return string.Format("0x{0:x4}", _e_ip); } }
            public string e_cs { get { return string.Format("0x{0:x4}", _e_cs); } }
            public string e_lfarlc { get { return string.Format("0x{0:x4}", _e_lfarlc); } }
            public string e_ovno { get { return string.Format("0x{0:x4}", _e_ovno); } }
            public ushort[] e_res1 { get { return _e_res1; } }
            public string e_oemid { get { return string.Format("0x{0:x4}", _e_oemid); } }
            public string e_oeminfo { get { return string.Format("0x{0:x4}", _e_oeminfo); } }
            public ushort[] e_res2 { get { return _e_res2; } }
            public string e_lfanew { get { return string.Format("0x{0:x8}", _e_lfanew); } }

            public override string ToString()
            {
                return Encoding.UTF8.GetString(BitConverter.GetBytes(_e_magic));
            }
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_NT_HEADERS
        {
            public UInt32 _Signature;
            public IMAGE_FILE_HEADER _FileHeader;
            public IMAGE_OPTIONAL_HEADER32 _OptionalHeader32;
            public IMAGE_OPTIONAL_HEADER64 _OptionalHeader64;

            public string Signature { get { return string.Format("0x{0:x8}", _Signature); } }
            public IMAGE_FILE_HEADER FileHeader { get { return _FileHeader; } }
            public IMAGE_OPTIONAL_HEADER32 OptionalHeader32 { get { return _OptionalHeader32;} }
            public IMAGE_OPTIONAL_HEADER64 OptionalHeader64 { get { return _OptionalHeader64;} }

            public override string ToString()
            {
                return Encoding.UTF8.GetString(BitConverter.GetBytes(_Signature));
            }
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_FILE_HEADER
        {
            public UInt16 _MachineType;
            public UInt16 _NumberOfSections;
            public UInt32 _TimeDateStamp;
            public UInt32 _PointerToSymbolTable;
            public UInt32 _NumberOfSymbols;
            public UInt16 _SizeOfOptionalHeader;
            public UInt16 _Characteristics;


            public string MachineType { get { return ((MachineTypeFlags)_MachineType).ToString(); } }
            public string NumberOfSections { get { return string.Format("0x{0:x4}", _NumberOfSections); } }
            public string TimeDateStamp { get { return string.Format("{0} (0x{1:x8})", GetDateTimeFromDosDateTime(_TimeDateStamp).ToString(), _TimeDateStamp); } }
            public string PointerToSymbolTable { get { return string.Format("0x{0:x8}", _PointerToSymbolTable); } }
            public string NumberOfSymbols { get { return string.Format("0x{0:x8}", _NumberOfSymbols); } }
            public string SizeOfOptionalHeader { get { return string.Format("0x{0:x4}", _SizeOfOptionalHeader); } }
            public string Characteristics { get { return string.Format("0x{0:x4}", _Characteristics); } }
            public override string ToString()
            {
                return MachineType;
            }

            private DateTime GetDateTimeFromDosDateTime(UInt32 i32TimeDate)
            {
                UInt16 i16Time = (UInt16)(i32TimeDate & 0xFFFF);
                UInt16 i16Date = (UInt16)((i32TimeDate & 0xFFFF0000) >> 16);
                return GetDateTimeFromDosDateTime(i16Time, i16Date);
            }
            private DateTime GetDateTimeFromDosDateTime(UInt16 i16Time, UInt16 i16Date)
            {
                int iYear = 0;
                int iMonth = 1;
                int iDay = 1;
                int iHour = 0;
                int iMinute = 0;
                int iSecond = 0;
                iDay = (i16Date & 0x1F);
                iMonth = ((i16Date & 0x01E0) >> 5);
                iYear = 1970 + ((i16Date & 0xFE00) >> 9);
                iSecond = (i16Time & 0x1F) * 2;
                iMinute = ((i16Time & 0x07E0) >> 5);
                iHour = ((i16Time & 0x0F800) >> 11);
                return new DateTime(iYear, iMonth, iDay, iHour, iMinute, iSecond);
            }

        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_OPTIONAL_HEADER32
        {
            public UInt16 _Magic;
            public Byte _MajorLinkerVersion;
            public Byte _MinorLinkerVersion;
            public UInt32 _SizeOfCode;
            public UInt32 _SizeOfInitializedData;
            public UInt32 _SizeOfUninitializedData;
            public UInt32 _AddressOfEntryPoint;
            public UInt32 _BaseOfCode;
            public UInt32 _BaseOfData; // 32-but specific
            public UInt32 _ImageBase;
            public UInt32 _SectionAlignment;
            public UInt32 _FileAlignment;
            public UInt16 _MajorOperatingSystemVersion;
            public UInt16 _MinorOperatingSystemVersion;
            public UInt16 _MajorImageVersion;
            public UInt16 _MinorImageVersion;
            public UInt16 _MajorSubsystemVersion;
            public UInt16 _MinorSubsystemVersion;
            public UInt32 _Win32VersionValue;
            public UInt32 _SizeOfImage;
            public UInt32 _SizeOfHeaders;
            public UInt32 _CheckSum;
            public UInt16 _Subsystem;
            public UInt16 _DllCharacteristics;
            public UInt32 _SizeOfStackReserve;
            public UInt32 _SizeOfStackCommit;
            public UInt32 _SizeOfHeapReserve;
            public UInt32 _SizeOfHeapCommit;
            public UInt32 _LoaderFlags;
            public UInt32 _NumberOfRvaAndSizes;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public IMAGE_DATA_DIRECTORY[] _DataDirectory;


            public string Magic { get { return ((MagicType)_Magic).ToString(); } }
            public string MajorLinkerVersion { get { return string.Format("0x{0:x2}", _MajorLinkerVersion); } }
            public string MinorLinkerVersion { get { return string.Format("0x{0:x2}", _MajorLinkerVersion); } }

            public string SizeOfCode { get { return string.Format("0x{0:x2}", _SizeOfCode); } }
            public string SizeOfInitializedData { get { return string.Format("0x{0:x8}", _SizeOfInitializedData); } }
            public string SizeOfUninitializedData { get { return string.Format("0x{0:x8}", _SizeOfUninitializedData); } }
            public string AddressOfEntryPoint { get { return string.Format("0x{0:x8}", _AddressOfEntryPoint); } }
            public string BaseOfCode { get { return string.Format("0x{0:x8}", _BaseOfCode); } }
            public string BaseOfData { get { return string.Format("0x{0:x8}", _BaseOfData); } }
            public string ImageBase { get { return string.Format("0x{0:x16}", _ImageBase); } }

            public string SectionAlignment { get { return string.Format("0x{0:x8}", _SectionAlignment); } }
            public string FileAlignment { get { return string.Format("0x{0:x8}", _FileAlignment); } }

            public string MajorOperatingSystemVersion { get { return string.Format("0x{0:x4}", _MajorOperatingSystemVersion); } }
            public string MinorOperatingSystemVersion { get { return string.Format("0x{0:x4}", _MinorOperatingSystemVersion); } }
            public string MajorImageVersion { get { return string.Format("0x{0:x4}", _MajorImageVersion); } }
            public string MinorImageVersion { get { return string.Format("0x{0:x4}", _MinorImageVersion); } }
            public string MajorSubsystemVersion { get { return string.Format("0x{0:x4}", _MajorSubsystemVersion); } }
            public string MinorSubsystemVersion { get { return string.Format("0x{0:x4}", _MinorSubsystemVersion); } }

            public string Win32VersionValue { get { return string.Format("0x{0:x8}", _Win32VersionValue); } }
            public string SizeOfImage { get { return string.Format("0x{0:x8}", _SizeOfImage); } }
            public string SizeOfHeaders { get { return string.Format("0x{0:x8}", _SizeOfHeaders); } }
            public string CheckSum { get { return string.Format("0x{0:x8}", _CheckSum); } }

            public string Subsystem { get { return ((SubSystemType)_Subsystem).ToString(); } }
            public string DllCharacteristics { get { return string.Format("0x{0:x4}", _DllCharacteristics); } }

            public string SizeOfStackReserve { get { return string.Format("0x{0:x16}", _SizeOfStackReserve); } }
            public string SizeOfStackCommit { get { return string.Format("0x{0:x16}", _SizeOfStackCommit); } }
            public string SizeOfHeapReserve { get { return string.Format("0x{0:x16}", _SizeOfHeapReserve); } }
            public string SizeOfHeapCommit { get { return string.Format("0x{0:x16}", _SizeOfHeapCommit); } }

            public string LoaderFlags { get { return string.Format("0x{0:x8}", _LoaderFlags); } }
            public string NumberOfRvaAndSizes { get { return string.Format("0x{0:x8}", _NumberOfRvaAndSizes); } }
            public override string ToString()
            {
                return Magic;
            }
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_OPTIONAL_HEADER64
        {
            public UInt16 _Magic;
            public Byte _MajorLinkerVersion;
            public Byte _MinorLinkerVersion;
            public UInt32 _SizeOfCode;
            public UInt32 _SizeOfInitializedData;
            public UInt32 _SizeOfUninitializedData;
            public UInt32 _AddressOfEntryPoint;
            public UInt32 _BaseOfCode;
            public UInt64 _ImageBase;
            public UInt32 _SectionAlignment;
            public UInt32 _FileAlignment;
            public UInt16 _MajorOperatingSystemVersion;
            public UInt16 _MinorOperatingSystemVersion;
            public UInt16 _MajorImageVersion;
            public UInt16 _MinorImageVersion;
            public UInt16 _MajorSubsystemVersion;
            public UInt16 _MinorSubsystemVersion;
            public UInt32 _Win32VersionValue;
            public UInt32 _SizeOfImage;
            public UInt32 _SizeOfHeaders;
            public UInt32 _CheckSum;
            public UInt16 _Subsystem;
            public UInt16 _DllCharacteristics;
            public UInt64 _SizeOfStackReserve;
            public UInt64 _SizeOfStackCommit;
            public UInt64 _SizeOfHeapReserve;
            public UInt64 _SizeOfHeapCommit;
            public UInt32 _LoaderFlags;
            public UInt32 _NumberOfRvaAndSizes;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public IMAGE_DATA_DIRECTORY[] _DataDirectory;


            public string Magic { get { return ((MagicType)_Magic).ToString(); } }
            public string MajorLinkerVersion { get { return string.Format("0x{0:x2}", _MajorLinkerVersion); } }
            public string MinorLinkerVersion { get { return string.Format("0x{0:x2}", _MajorLinkerVersion); } }

            public string SizeOfCode { get { return string.Format("0x{0:x2}", _SizeOfCode); } }
            public string SizeOfInitializedData { get { return string.Format("0x{0:x8}", _SizeOfInitializedData); } }
            public string SizeOfUninitializedData { get { return string.Format("0x{0:x8}", _SizeOfUninitializedData); } }
            public string AddressOfEntryPoint { get { return string.Format("0x{0:x8}", _AddressOfEntryPoint); } }
            public string BaseOfCode { get { return string.Format("0x{0:x8}", _BaseOfCode); } }

            public string ImageBase { get { return string.Format("0x{0:x16}", _ImageBase); } }

            public string SectionAlignment { get { return string.Format("0x{0:x8}", _SectionAlignment); } }
            public string FileAlignment { get { return string.Format("0x{0:x8}", _FileAlignment); } }

            public string MajorOperatingSystemVersion { get { return string.Format("0x{0:x4}", _MajorOperatingSystemVersion); } }
            public string MinorOperatingSystemVersion { get { return string.Format("0x{0:x4}", _MinorOperatingSystemVersion); } }
            public string MajorImageVersion { get { return string.Format("0x{0:x4}", _MajorImageVersion); } }
            public string MinorImageVersion { get { return string.Format("0x{0:x4}", _MinorImageVersion); } }
            public string MajorSubsystemVersion { get { return string.Format("0x{0:x4}", _MajorSubsystemVersion); } }
            public string MinorSubsystemVersion { get { return string.Format("0x{0:x4}", _MinorSubsystemVersion); } }

            public string Win32VersionValue { get { return string.Format("0x{0:x8}", _Win32VersionValue); } }
            public string SizeOfImage { get { return string.Format("0x{0:x8}", _SizeOfImage); } }
            public string SizeOfHeaders { get { return string.Format("0x{0:x8}", _SizeOfHeaders); } }
            public string CheckSum { get { return string.Format("0x{0:x8}", _CheckSum); } }

            public string Subsystem { get { return ((SubSystemType)_Subsystem).ToString(); } }
            public string DllCharacteristics { get { return string.Format("0x{0:x4}", _DllCharacteristics); } }

            public string SizeOfStackReserve { get { return string.Format("0x{0:x16}", _SizeOfStackReserve); } }
            public string SizeOfStackCommit { get { return string.Format("0x{0:x16}", _SizeOfStackCommit); } }
            public string SizeOfHeapReserve { get { return string.Format("0x{0:x16}", _SizeOfHeapReserve); } }
            public string SizeOfHeapCommit { get { return string.Format("0x{0:x16}", _SizeOfHeapCommit); } }

            public string LoaderFlags { get { return string.Format("0x{0:x8}", _LoaderFlags); } }
            public string NumberOfRvaAndSizes { get { return string.Format("0x{0:x8}", _NumberOfRvaAndSizes); } }

            public override string ToString()
            {
                return Magic;
            }
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_DATA_DIRECTORY
        {
            public UInt32 _VirtualAddress;
            public UInt32 _Size;

            public string VirtualAddress { get { return string.Format("0x{0:x8}", _VirtualAddress); } }
            public string Size { get { return string.Format("0x{0:x8}", _Size); } }
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_SECTION_HEADER
        {
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
            public string _Name;
            public Misc _Misc;
            public UInt32 _VirtualAddress;
            public UInt32 _SizeOfRawData;
            public UInt32 _PointerToRawData;
            public UInt32 _PointerToRelocations;
            public UInt32 _PointerToLinenumbers;
            public UInt16 _NumberOfRelocations;
            public UInt16 _NumberOfLinenumbers;
            public UInt32 _Characteristics;

            public string Name { get { return _Name; } }
            public Misc Misc { get { return _Misc; } }
            public string VirtualAddress { get { return string.Format("0x{0:x8}", _VirtualAddress); } }
            public string SizeOfRawData { get { return string.Format("0x{0:x8}", _SizeOfRawData); } }
            public string PointerToRawData { get { return string.Format("0x{0:x8}", _PointerToRawData); } }
            public string PointerToRelocations { get { return string.Format("0x{0:x8}", _PointerToRelocations); } }
            public string PointerToLinenumbers { get { return string.Format("0x{0:x8}", _PointerToLinenumbers); } }
            public string NumberOfRelocations { get { return string.Format("0x{0:x4}", _NumberOfRelocations); } }
            public string NumberOfLinenumbers { get { return string.Format("0x{0:x4}", _NumberOfLinenumbers); } }
            public string Characteristics { get { return string.Format("0x{0:x8}", _Characteristics); } }
            public override string ToString()
            {
                return Name;
            }
        }
        [TypeConverter(typeof(ExpandableObjectConverter))]
        [StructLayout(LayoutKind.Explicit)]
        public struct Misc
        {
            [FieldOffset(0)]
            public UInt32 _PhysicalAddress;
            [FieldOffset(0)]
            public UInt32 _VirtualSize;

            public string PhysicalAddress { get { return string.Format("0x{0:x8}", _PhysicalAddress); } }
            public string VirtualSize { get { return string.Format("0x{0:x8}", _VirtualSize); } }

        }

        #endregion

        #region Fields

        private readonly IMAGE_DOS_HEADER _dosHeader;
        private IMAGE_NT_HEADERS _ntHeaders;
        private readonly IList<IMAGE_SECTION_HEADER> _sectionHeaders = new List<IMAGE_SECTION_HEADER>();
        #endregion

        #region logging implementation
        private static class log
        {
            public static class verbose
            {
                public static class debug
                {
                    public static void writeline(string format, params object[] args)
                    {
#if ENABLE_LOGGING
                        logger.VerboseDebug.WriteLine(format, args);
#endif
                    }
                    public static void write(string format, params object[] args)
                    {
#if ENABLE_LOGGING
                        logger.VerboseDebug.Write(format, args);
#endif
                    }
                }
                public static class error
                {
                    public static void writeline(string format, params object[] args)
                    {
#if ENABLE_LOGGING
                        logger.VerboseError.WriteLine(format, args);
#endif
                    }
                    public static void write(string format, params object[] args)
                    {
#if ENABLE_LOGGING
                        logger.VerboseError.Write(format, args);
#endif
                    }
                }
            }
        }
        #endregion


        public PEData GetData
        {
            get 
            {
                PEData _data = new PEData(_dosHeader, _ntHeaders, _sectionHeaders.ToArray());
                return _data;
            }
        }
        #region t
        public class PEData
        {
            public PEData() : this(new IMAGE_DOS_HEADER(), new IMAGE_NT_HEADERS(), new IMAGE_SECTION_HEADER[] { }) { }
            public PEData(IMAGE_DOS_HEADER DosHeader, IMAGE_NT_HEADERS NTHeader, IMAGE_SECTION_HEADER[] SectionHeaders)
            {
                this.DosHeader = DosHeader;
                this.NTHeader = NTHeader;
                this.SectionHeaders = SectionHeaders;
            }
            public IMAGE_DOS_HEADER DosHeader { get; private set; }
            public IMAGE_NT_HEADERS NTHeader { get; private set; }
            public IMAGE_SECTION_HEADER[] SectionHeaders { get; private set; }
        }

        #endregion

        public PEReader(FileInfo fi) : this(fi.FullName) { }
        public PEReader(string filename)
        {            
            Exception ErrorInfo = null;
            using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read))
            {
                try
                {
                    log.verbose.debug.writeline("Reading PE Format from: {0}", filename);
                    BinaryReader reader = new BinaryReader(fs);
                    // Reset reader position, just in case
                    reader.BaseStream.Seek(0, SeekOrigin.Begin);

                    // Read MS-DOS header section
                    _dosHeader = MarshalBytesTo<IMAGE_DOS_HEADER>(reader);
                    // MS-DOS magic number should read 'MZ'
                    if (_dosHeader._e_magic != 0x5a4d)
                    {
                        throw new InvalidOperationException("File is not a portable executable.");
                    }

                    // Skip MS-DOS stub and seek reader to NT Headers
                    reader.BaseStream.Seek(_dosHeader._e_lfanew, SeekOrigin.Begin);

                    // Read NT Headers
                    _ntHeaders._Signature = MarshalBytesTo<UInt32>(reader);

                    // Make sure we have 'PE' in the pe signature
                    if (_ntHeaders._Signature != 0x4550)
                    {
                        throw new InvalidOperationException("Invalid portable executable signature in NT header.");
                    }

                    _ntHeaders._FileHeader = MarshalBytesTo<IMAGE_FILE_HEADER>(reader);                    
                    // Read optional headers
                    if (Is32bitAssembly())
                    {
                        log.verbose.debug.writeline("\tDetected a 32Bit PE Executable");
                        Load32bitOptionalHeaders(reader);
                    }
                    else
                    {
                        log.verbose.debug.writeline("\tDetected a 64Bit PE Executable");
                        Load64bitOptionalHeaders(reader);
                    }

                    // Read section data
                    log.verbose.debug.writeline("\tTotal Section Headers: {0}", _sectionHeaders.Count);
                    foreach (IMAGE_SECTION_HEADER header in _sectionHeaders)
                    {
                        int section_index = _sectionHeaders.IndexOf(header) + 1;
                        log.verbose.debug.writeline("\tSection Header: {0} of {1}", section_index, _sectionHeaders.Count);
                        log.verbose.debug.writeline("\t\tName: {0}", header.Name);
                        log.verbose.debug.writeline("\t\tVirtual Address: 0x{0:x8}", header.VirtualAddress);
                        log.verbose.debug.writeline("\t\tPhysical Address: 0x{0:x8}", header.Misc.PhysicalAddress);
                        log.verbose.debug.writeline("\t\tVirtual Size: 0x{0:x8}", header.Misc.VirtualSize);
                        log.verbose.debug.writeline("\t\tRaw Data Size: 0x{0:x8}", header.SizeOfRawData);
                        log.verbose.debug.writeline("\t\tPointer To Raw Data: 0x{0:x8}", header.PointerToRawData);

                        // Skip to beginning of a section
                        reader.BaseStream.Seek(header._PointerToRawData, SeekOrigin.Begin);

                        // Read section data... and do something with it
                        byte[] sectiondata = reader.ReadBytes((int)header._SizeOfRawData);
                    }
                    reader.Close();
                }
                catch (Exception ex)
                {
                    ErrorInfo = ex;
                    throw ErrorInfo;
                }
            }
            if (ErrorInfo != null)
            {
                log.verbose.error.writeline("Error Reading PE Format from: {0}", filename);
                log.verbose.error.writeline(ErrorInfo.ToString());
            }
        }

        public IMAGE_DOS_HEADER GetDOSHeader()
        {
            return _dosHeader;
        }

        public UInt32 GetPESignature()
        {
            return _ntHeaders._Signature;
        }

        public IMAGE_FILE_HEADER GetFileHeader()
        {
            return _ntHeaders.FileHeader;
        }

        public IMAGE_OPTIONAL_HEADER32 GetOptionalHeaders32()
        {
            return _ntHeaders.OptionalHeader32;
        }

        public IMAGE_OPTIONAL_HEADER64 GetOptionalHeaders64()
        {
            return _ntHeaders.OptionalHeader64;
        }

        public IList<IMAGE_SECTION_HEADER> GetSectionHeaders()
        {
            return _sectionHeaders;
        }

        public bool Is32bitAssembly()
        {
            return ((_ntHeaders.FileHeader._Characteristics & 0x0100) == 0x0100);
        }

        private void Load64bitOptionalHeaders(BinaryReader reader)
        {
            _ntHeaders._OptionalHeader64 = MarshalBytesTo<IMAGE_OPTIONAL_HEADER64>(reader);

            // Should have 10 data directories
            if (_ntHeaders.OptionalHeader64._NumberOfRvaAndSizes != 0x10)
            {
                throw new InvalidOperationException("Invalid number of data directories in NT header");
            }

            // Scan data directories and load section headers
            for (int i = 0; i < _ntHeaders.OptionalHeader64._NumberOfRvaAndSizes; i++)
            {
                if (_ntHeaders._OptionalHeader64._DataDirectory[i]._Size > 0)
                {
                    _sectionHeaders.Add(MarshalBytesTo<IMAGE_SECTION_HEADER>(reader));
                }
            }
        }

        private void Load32bitOptionalHeaders(BinaryReader reader)
        {
            _ntHeaders._OptionalHeader32 = MarshalBytesTo<IMAGE_OPTIONAL_HEADER32>(reader);

            // Should have 10 data directories
            if (_ntHeaders.OptionalHeader32._NumberOfRvaAndSizes != 0x10)
            {
                throw new InvalidOperationException("Invalid number of data directories in NT header");
            }

            // Scan data directories and load section headers
            for (int i = 0; i < _ntHeaders.OptionalHeader32._NumberOfRvaAndSizes; i++)
            {
                if (_ntHeaders._OptionalHeader32._DataDirectory[i]._Size > 0)
                {
                    _sectionHeaders.Add(MarshalBytesTo<IMAGE_SECTION_HEADER>(reader));
                }
            }
        }

        private static T MarshalBytesTo<T>(BinaryReader reader)
        {
            // Unmanaged data
            byte[] bytes = reader.ReadBytes(Marshal.SizeOf(typeof(T)));

            // Create a pointer to the unmanaged data pinned in memory to be accessed by unmanaged code
            GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);

            // Use our previously created pointer to unmanaged data and marshal to the specified type
            T theStructure = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));

            // Deallocate pointer
            handle.Free();

            return theStructure;
        }
    }
}