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elf_header.py
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elf_header.py
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#!/usr/bin/env python
#coding:utf-8
import binascii
class ELF(object):
"""docstring for ELF"""
def __init__(self, filepath):
super(ELF, self).__init__()
self.filepath = filepath
self.elf32_Ehdr = Elf32_Ehdr()
self.initELFHeader()
def initELFHeader(self):
f = open(self.filepath, "rb")
self.f = f
# unsigned char e_ident[EI_NIDENT];
f.seek(0, 0)
self.elf32_Ehdr.e_ident = e_ident()
self.elf32_Ehdr.e_ident.file_identification = f.read(4)
self.elf32_Ehdr.e_ident.ei_class = int(binascii.b2a_hex(f.read(1)), 16)
self.elf32_Ehdr.e_ident.ei_data = int(binascii.b2a_hex(f.read(1)), 16)
self.elf32_Ehdr.e_ident.ei_version = int(binascii.b2a_hex(f.read(1)), 16)
self.elf32_Ehdr.e_ident.ei_osabi = int(binascii.b2a_hex(f.read(1)), 16)
self.elf32_Ehdr.e_ident.ei_abiversion = int(binascii.b2a_hex(f.read(1)), 16)
self.elf32_Ehdr.e_ident.ei_pad = binascii.b2a_hex(f.read(6))
self.elf32_Ehdr.e_ident.ei_nident = int(binascii.b2a_hex(f.read(1)), 16)
# Elf32_Half e_type;
f.seek(16, 0)
self.elf32_Ehdr.e_type = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_machine;
f.seek(18, 0)
self.elf32_Ehdr.e_machine = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Word e_version;
f.seek(20, 0)
self.elf32_Ehdr.e_version = int(binascii.b2a_hex(f.read(4)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Addr e_entry;
f.seek(24, 0)
self.elf32_Ehdr.e_entry = int(binascii.b2a_hex(f.read(4)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Off e_phoff;
f.seek(28, 0)
self.elf32_Ehdr.e_phoff = int(binascii.b2a_hex(f.read(4)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Off e_shoff;
f.seek(32, 0)
self.elf32_Ehdr.e_shoff = int(binascii.b2a_hex(f.read(4)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Word e_flags;
f.seek(36, 0)
self.elf32_Ehdr.e_flags = int(binascii.b2a_hex(f.read(4)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_ehsize;
f.seek(40, 0)
self.elf32_Ehdr.e_ehsize = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_phentsize;
f.seek(42, 0)
self.elf32_Ehdr.e_phentsize = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_phnum;
f.seek(44, 0)
self.elf32_Ehdr.e_phnum = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_shentsize;
f.seek(46, 0)
self.elf32_Ehdr.e_shentsize = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_shnum;
f.seek(48, 0)
self.elf32_Ehdr.e_shnum = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
# Elf32_Half e_shstrndx;
f.seek(50, 0)
self.elf32_Ehdr.e_shstrndx = int(binascii.b2a_hex(f.read(2)).decode('hex')[::-1].encode('hex'), 16)
class Elf32_Ehdr(object):
"""docstring for Elf32_Ehdr"""
def __init__(self):
super(Elf32_Ehdr, self).__init__()
self.e_ident = None
self.e_type = None
self.e_machine = None
self.e_version = None
self.e_entry = None
self.e_phoff = None
self.e_shoff = None
self.e_flags = None
self.e_ehsize = None
self.e_phentsize = None
self.e_phnum = None
self.e_shentsize = None
self.e_shnum = None
self.e_shstrndx = None
class e_ident(object):
"""docstring for e_ident"""
def __init__(self):
super(e_ident, self).__init__()
self.file_identification = None
self.ei_class = None
self.ei_data = None
self.ei_version = None
self.ei_osabi = None
self.ei_abiversion = None
self.ei_pad = None
self.ei_nident = None
def __str__(self):
return 'e_ident=[file_identification=%s, ei_class=%d, ei_data=%d, ei_version=%d, ei_osabi=%d, ei_abiversion=%d, ei_pad=%s, ei_nident=%d]' % (
self.file_identification, self.ei_class, self.ei_data, self.ei_version, self.ei_osabi, self.ei_abiversion, self.ei_pad, self.ei_nident)