public void DumpString()
{
ElfHDR elfhdr = header;
ElfPHDR elfphdr;
ElfSHDR elfshdr;
// Initialze output file
System.IO.BinaryWriter writer = new System.IO.BinaryWriter(System.IO.File.Create("dump.txt"));
// Write Elf
writer.Write(String.Format("****ELF HEADER****\n{0}\n", elfhdr.ToString()));
// Write PHDR
writer.Write("****PROGRAM HEADERS****\n");
for (int i = 0; i < elfhdr.ProgramHeaderCount; i++)
{
writer.Write(String.Format("Program[{0}]\n{1}\n", i, programs[i].Header.ToString()));
}
// WRITE SHDR
writer.Write("****SECTION HEADERS****\n");
for (int i = 0; i < elfhdr.SectionHeaderCount; i++)
{
writer.Write(String.Format("Section[{0}]\n{1}\n", i, sections[i].Header.ToString()));
}
// Close writer
writer.Close();
writer.Dispose();
}
public void Save(String filename)
{
// initialize stream
FileStream stream = File.Create(filename);
// Initialize Elf endianness
ElfEndian endian = new ElfEndian(elf.Header.Encoding);
// Save Elf header
ElfHDR hdr = elf.Header;
Byte[] hdrData = new Byte[hdr.DataSize];
elf.Header.Save(endian, ref hdrData);
stream.Write(hdrData, 0, hdrData.Length);
// Save programs
Byte[] phdrData = new Byte[hdr.ProgramHeaderSize];
stream.Seek((Int64)hdr.ProgramHeaderOffset, SeekOrigin.Begin);
for (int i = 0; i < hdr.ProgramHeaderCount; i++)
{
// Save program headers
elf.Programs[i].Header.Save(endian, hdr.Class, ref phdrData);
stream.Write(phdrData, 0, phdrData.Length);
}
// Save sections
Byte[] shdrData = new Byte[hdr.SectionHeaderSize];
stream.Seek((Int64)hdr.SectionHeaderOffset, SeekOrigin.Begin);
for (int i = 0; i < hdr.SectionHeaderCount; i++)
{
// Save section header
ElfSHDR shdr = elf.Sections[i].Header;
ElfSectionType type = shdr.Type;
shdr.Save(endian, hdr.Class, ref shdrData);
stream.Write(shdrData, 0, shdrData.Length);
if (type != ElfSectionType.SHT_NULL && type != ElfSectionType.SHT_NOBITS)
{
Byte[] section = elf.Sections[i].Section;
//stream.Write(elf.Sections[i].Section, 0, ;
}
}
for (int i = 0; i < hdr.SectionHeaderCount; i++)
{
// Save section data
ElfSection section = elf.Sections[i];
ElfSectionType type = section.Header.Type;
if (type != ElfSectionType.SHT_NULL && type != ElfSectionType.SHT_NOBITS)
{
stream.Seek((Int64)section.Header.FileOffset, SeekOrigin.Begin);
stream.Write(section.Section, 0, (int)section.Header.Size);
}
}
// Close stream
stream.Close();
}
public Elf(ElfHDR elfhdr, ElfProgram[] programs, ElfSection[] sections)
{
// Initialize elf header
this.header = elfhdr;
// Initialize program headers
this.programs = new List <ElfProgram>(programs);
// Initialize section headers
this.sections = new List <ElfSection>(sections);
}
public void DumpString()
{
ElfHDR elfhdr = header;
ElfPHDR elfphdr;
ElfSHDR elfshdr;
// Initialze output file
System.IO.BinaryWriter writer = new System.IO.BinaryWriter(System.IO.File.Create("dump.txt"));
// Write Elf
writer.Write("****ELF HEADER****\n");
writer.Write(String.Format("ID: {0}\nType: {1}\nMachine: {2}\nVersion: {3}\nEntryPoint: 0x{4:X8}\nPHOffset: 0x{5:X8}\nSHOffset: 0x{6:X8}\nFlags: 0x{7:X4}\nHeaderSize: 0x{8:X2}\nPHSize: 0x{9:X2}\nPHCount: 0x{10:X2}\nSHSize: 0x{11:X2}\nSHCount: 0x{12:X2}\nStringTable: 0x{13:X2}\n\n",
BitConverter.ToString(elfhdr.Identification),
elfhdr.Type.ToString(),
elfhdr.MachineType.ToString(),
elfhdr.Version.ToString(),
elfhdr.EntryPoint,
elfhdr.ProgramHeaderOffset,
elfhdr.SectionHeaderOffset,
elfhdr.Flags,
elfhdr.HeaderSize,
elfhdr.ProgramHeaderSize,
elfhdr.ProgramHeaderCount,
elfhdr.SectionHeaderSize,
elfhdr.SectionHeaderCount,
elfhdr.StringTable));
// Write PHDR
writer.Write("****PROGRAM HEADERS****\n");
for (int i = 0; i < elfhdr.ProgramHeaderCount; i++)
{
elfphdr = programs[i].Header;
writer.Write(String.Format("Program[{10}]\nType = {0}\nFlags = {1}\nOffset = 0x{2:X8} => 0x{8:X8} => 0x{9:X8}\nVaddr = 0x{3:X8}\nPaddr = 0x{4:X8}\nFilesz = 0x{5:X8}\nMemsz = 0x{6:X8}\nAlign = 0x{7:X8}\n\n",
elfphdr.Type.ToString(),
elfphdr.Flags.ToString(),
elfphdr.FileOffset,
elfphdr.VirtualAddress,
elfphdr.PhysicalAddress,
elfphdr.FileSize,
elfphdr.MemorySize,
elfphdr.Align,
elfphdr.FileOffset + elfphdr.FileSize,
(elfphdr.FileOffset + elfphdr.FileSize + elfphdr.Align - 1) & ~(elfphdr.Align - 1),
i));
}
// WRITE SHDR
writer.Write("****SECTION HEADERS****\n");
for (int i = 0; i < elfhdr.SectionHeaderCount; i++)
{
elfshdr = sections[i].Header;
writer.Write(String.Format("Section[{12}]\nName: 0x{0:X4}\nType: {1}\nFlags: {2}\nAddress: 0x{3:X8}\nOffset: 0x{4:X8} => 0x{10:X8} => 0x{11:X8}\nSize: 0x{5:X8}\nLink: 0x{6:X4}\nInfo: 0x{7:X4}\nAlign: 0x{8:X8}\nEntries: 0x{9:X8}\n\n",
elfshdr.Name,
elfshdr.Type.ToString(),
elfshdr.Flags.ToString(),
elfshdr.Address,
elfshdr.FileOffset,
elfshdr.Size,
elfshdr.Link,
elfshdr.Info,
elfshdr.Align,
elfshdr.EntrySize,
elfshdr.FileOffset + elfshdr.Size,
(elfshdr.FileOffset + elfshdr.Size + elfshdr.Align - 1) & ~(elfshdr.Align - 1),
i));
}
// Close writer
writer.Close();
writer.Dispose();
}
public void Load(String filename)
{
// initialize stream
FileStream stream = File.OpenRead(filename);
// Read Elf ID
ElfHDR elfhdr = new ElfHDR();
Byte[] elfid = new Byte[(int)ElfIdent.EI_NIDENT];
stream.Read(elfid, 0, elfid.Length);
elfhdr.Identification = elfid;
if (!elfhdr.IsElf)
{
throw new ArgumentException("Given file is not an elf");
}
// Initialize Elf endianness
ElfEndian endian = new ElfEndian(elfhdr.Encoding);
// Read Elf header
Byte[] elfhdrData = new Byte[elfhdr.DataSize];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(elfhdrData, 0, elfhdr.DataSize);
elfhdr.Load(endian, elfhdrData);
// Read programs
ElfProgram[] elfprogs = new ElfProgram[elfhdr.ProgramHeaderCount];
Byte[] elfphdrData = new Byte[elfhdr.ProgramHeaderSize];
for (int i = 0; i < elfhdr.ProgramHeaderCount; i++)
{
ElfPHDR phdr = new ElfPHDR(elfhdr.Class);
stream.Seek((Int64)elfhdr.ProgramHeaderOffset + i * elfhdr.ProgramHeaderSize, SeekOrigin.Begin);
stream.Read(elfphdrData, 0, elfhdr.ProgramHeaderSize);
phdr.Load(endian, elfhdr.Class, elfphdrData);
elfprogs[i] = new ElfProgram(phdr);
}
// Read sections
ElfSection[] elfsects = new ElfSection[elfhdr.SectionHeaderCount];
Byte[] elfshdrData = new Byte[elfhdr.SectionHeaderSize];
for (int i = 0; i < elfhdr.SectionHeaderCount; i++)
{
ElfSHDR shdr = new ElfSHDR(elfhdr.Class);
stream.Seek((Int64)elfhdr.SectionHeaderOffset + i * elfhdr.SectionHeaderSize, SeekOrigin.Begin);
stream.Read(elfshdrData, 0, elfhdr.SectionHeaderSize);
shdr.Load(endian, elfhdr.Class, elfshdrData);
Byte[] section = null;
if (shdr.Type != ElfSectionType.SHT_NOBITS && shdr.Type != ElfSectionType.SHT_NULL)
{
section = new Byte[shdr.Size];
stream.Seek((Int64)shdr.FileOffset, SeekOrigin.Begin);
stream.Read(section, 0, section.Length);
}
elfsects[i] = new ElfSection(shdr, section);
}
// Initialize Elf
elf = new Elf(elfhdr, elfprogs, elfsects);
// Close stream
stream.Close();
}
