internal DWORD e_lfanew; // File address of new exe header
internal static IMAGE_DOS_HEADER FromBinaryReader(BinaryReader reader)
{
IMAGE_DOS_HEADER ret = new IMAGE_DOS_HEADER();
try
{
ret.e_magic = reader.ReadUInt16(); // Magic number
if (ret.e_magic != IMAGE_DOS_SIGNATURE)
{
return(null);
}
ret.e_cblp = reader.ReadUInt16(); // Bytes on last page of file
ret.e_cp = reader.ReadUInt16(); // Pages in file
ret.e_crlc = reader.ReadUInt16(); // Relocations
ret.e_cparhdr = reader.ReadUInt16(); // Size of header in paragraphs
ret.e_minalloc = reader.ReadUInt16(); // Minimum extra paragraphs needed
ret.e_maxalloc = reader.ReadUInt16(); // Maximum extra paragraphs needed
ret.e_ss = reader.ReadUInt16(); // Initial (relative) SS value
ret.e_sp = reader.ReadUInt16(); // Initial SP value
ret.e_csum = reader.ReadUInt16(); // Checksum
ret.e_ip = reader.ReadUInt16(); // Initial IP value
ret.e_cs = reader.ReadUInt16(); // Initial (relative) CS value
ret.e_lfarlc = reader.ReadUInt16(); // File address of relocation table
ret.e_ovno = reader.ReadUInt16(); // Overlay number
for (int i = 0; i < 4; i++)
{
ret.e_res[i] = reader.ReadUInt16();
}
ret.e_oemid = reader.ReadUInt16();
ret.e_oeminfo = reader.ReadUInt16();
for (int i = 0; i < 10; i++)
{
ret.e_res2[i] = reader.ReadUInt16();
}
ret.e_lfanew = reader.ReadUInt32();
}
catch
{
return(null);
}
return(ret);
}
internal static Win32ExeHeader FromBinaryReader(BinaryReader reader)
{
try
{
long startPosition = reader.BaseStream.Position;
long length = reader.BaseStream.Length - startPosition;
if (length < 0x1000)
{
return(null);
}
Win32ExeHeader ret = new Win32ExeHeader();
ret.DosHeader = IMAGE_DOS_HEADER.FromBinaryReader(reader);
if (ret.DosHeader == null)
{
return(null);
}
if (ret.DosHeader.e_lfanew <= 0)
{
return(ret);
}
reader.BaseStream.Seek(startPosition + ret.DosHeader.e_lfanew, SeekOrigin.Begin);
ret.NtHeader = IMAGE_NT_HEADERS.FromBinaryReader(reader);
if (ret.NtHeader == null)
{
return(null);
}
IMAGE_SECTION_HEADER section = IMAGE_SECTION_HEADER.FromBinaryReader(reader);
while (section != null)
{
ret.SectionHeaders.Add(section);
section = IMAGE_SECTION_HEADER.FromBinaryReader(reader);
}
return(ret);
}
catch
{
return(null);
}
}
