PyMISP/pymisp/tools/create_misp_object.py

74 lines
2.5 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from . import FileObject, PEObject, ELFObject, MachOObject
from ..exceptions import MISPObjectException
import logging
logger = logging.getLogger('pymisp')
try:
import lief
from lief import Logger
Logger.disable()
HAS_LIEF = True
except ImportError:
HAS_LIEF = False
class FileTypeNotImplemented(MISPObjectException):
pass
def make_pe_objects(lief_parsed, misp_file):
pe_object = PEObject(parsed=lief_parsed)
misp_file.add_reference(pe_object.uuid, 'included-in', 'PE indicators')
pe_sections = []
for s in pe_object.sections:
pe_sections.append(s)
return misp_file, pe_object, pe_sections
def make_elf_objects(lief_parsed, misp_file):
elf_object = ELFObject(parsed=lief_parsed)
misp_file.add_reference(elf_object.uuid, 'included-in', 'ELF indicators')
elf_sections = []
for s in elf_object.sections:
elf_sections.append(s)
return misp_file, elf_object, elf_sections
def make_macho_objects(lief_parsed, misp_file):
macho_object = MachOObject(parsed=lief_parsed)
misp_file.add_reference(macho_object.uuid, 'included-in', 'MachO indicators')
macho_sections = []
for s in macho_object.sections:
macho_sections.append(s)
return misp_file, macho_object, macho_sections
def make_binary_objects(filepath=None, pseudofile=None, filename=None):
misp_file = FileObject(filepath=filepath, pseudofile=pseudofile, filename=filename)
if HAS_LIEF and filepath:
try:
lief_parsed = lief.parse(filepath)
if isinstance(lief_parsed, lief.PE.Binary):
return make_pe_objects(lief_parsed, misp_file)
elif isinstance(lief_parsed, lief.ELF.Binary):
return make_elf_objects(lief_parsed, misp_file)
elif isinstance(lief_parsed, lief.MachO.Binary):
return make_macho_objects(lief_parsed, misp_file)
except lief.bad_format as e:
logger.warning('Bad format: {}'.format(e))
except lief.bad_file as e:
logger.warning('Bad file: {}'.format(e))
except lief.parser_error as e:
logger.warning('Parser error: {}'.format(e))
except FileTypeNotImplemented as e: # noqa
logger.warning(e)
if not HAS_LIEF:
logger.warning('Please install lief, documentation here: https://github.com/lief-project/LIEF')
if not filepath:
logger.warning('LIEF currently requires a filepath and not a pseudo file')
return misp_file, None, None