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#!/usr/bin/env python3
"""
__author__ = "Axelle Apvrille"
__status__ = "Beta"
__license__ = "MIT License"
"""
import droidutil
import droidconfig
import droidcountry
import droidsql
import json
import requests
import logging
import re
import configparser # to import Exodus Privacy trackers
from sqlalchemy.orm import sessionmaker
import sqlalchemy.exc
logging.basicConfig(format='%(levelname)s:%(filename)s:%(message)s',
level=logging.INFO)
# This is where to set whether given fields have
# a meaning or not for a given file type
applicability = {'file_size': [droidutil.APK, droidutil.DEX, droidutil.ARM,
droidutil.CLASS, droidutil.ZIP, droidutil.RAR],
'file_small': [droidutil.APK, droidutil.DEX, droidutil.ARM,
droidutil.CLASS, droidutil.ZIP, droidutil.RAR],
'file_nb_classes': [droidutil.APK, droidutil.DEX],
'file_nb_dir': [droidutil.APK, droidutil.DEX],
'file_innerzips': [droidutil.APK, droidutil.ZIP, droidutil.RAR],
'cert': [droidutil.APK],
'manifest': [droidutil.APK],
'smali': [droidutil.APK, droidutil.DEX],
'wide': [droidutil.APK, droidutil.DEX],
'arm': [droidutil.APK, droidutil.ARM],
'dex': [droidutil.APK, droidutil.DEX],
'kit': [droidutil.APK, droidutil.DEX]
}
class droidproperties:
verbose = False
"""Extracted properties"""
"""Field allocation"""
certificate = {}
manifest = {}
smali = {}
wide = {}
arm = {}
dex = {}
kits = {}
def __init__(self, config, samplename='', sha256='', verbose=False, import_exodus=False):
"""Properties concern a given sample identified by a basename (to be helpful) and a sha256 (real reference)"""
self.config = config
self.verbose = verbose
if verbose:
logging.getLogger().setLevel(logging.DEBUG)
self.sha256 = sha256
self.sanitized_basename = samplename
self.import_exodus = import_exodus
self.clear_fields()
def clear_fields(self):
"""Re-initialize all fields of the object - to default values"""
self.file_nb_classes = 0
self.file_nb_dir = 0
self.file_size = 0
self.file_small = False
self.filetype = droidutil.UNKNOWN
self.file_innerzips = False
self.certificate.clear()
self.certificate = {'av': False,
'algo': None,
'debug': False,
'dev': False,
'famous': False,
'serialno': None,
'country': droidcountry.country['unknown'],
'owner': None,
'timestamp': None,
'year': 0,
'unknown_country': False
}
self.manifest.clear()
self.manifest = {
'activities': [],
'libraries': [],
'listens_incoming_sms': False,
'listens_outgoing_call': False,
'maxSDK': 0,
'main_activity': None,
'minSDK': 0,
'package_name': None,
'permissions': [],
'providers': [],
'receivers': [],
'services': [],
'swf': False,
'targetSDK': 0
}
# automatically adding smali properties.
self.smali.clear()
self.smaliconfig = droidconfig.droidconfig(self.config.SMALI_CONFIGFILE, self.verbose)
for section in self.smaliconfig.get_sections():
self.smali[section] = False
self.smali['packed'] = False # This property is not in conf section as it is deduced from no main activity + loading DEX dynamically
self.smali['multidex'] = []
# automatically adding wide properties
self.wide.clear()
self.wide['app_name'] = None
self.wide['phonenumbers'] = []
self.wide['urls'] = []
self.wide['base64_strings'] = []
self.wide['apk_zip_url'] = False
self.wideconfig = droidconfig.droidconfig(self.config.WIDE_CONFIGFILE, self.verbose)
for section in self.wideconfig.get_sections():
self.wide[section] = False
# automatically add ARM properties
self.arm.clear()
self.armconfig = droidconfig.droidconfig(self.config.ARM_CONFIGFILE, self.verbose)
for section in self.armconfig.get_sections():
self.arm[section] = False
self.dex.clear()
self.dex = {'magic': 0,
'odex': False,
'magic_unknown': False,
'bad_sha1': False,
'bad_adler32': False,
'big_header': False,
'thuxnder': False
}
# automatically set to False kit properties
self.kits.clear()
logging.debug(f'Reading Kit Config file = {self.config.KIT_CONFIGFILE}')
self.kitsconfig = droidconfig.droidconfig(self.config.KIT_CONFIGFILE,
self.verbose)
for section in self.kitsconfig.get_sections():
self.kits[section] = False
if self.import_exodus:
self.import_exodus_trackers()
quit()
# END OF reinit to default values
def import_exodus_trackers(self):
# import ETIP Exodus Privacy trackers
url = 'https://etip.exodus-privacy.eu.org/api/trackers/?format=json'
logging.debug(f'Importing ETIP Exodus trackers from {url}')
r = requests.get(url)
if r.status_code != 200:
logging.warning('Cannot download Exodus Privacy trackers: '
f'{url} responds code={r.status_code}')
return
j = json.loads(r.text)
config = configparser.ConfigParser()
for tracker in j:
# remove trailing dots
code_signature = re.sub('\.\|', '|', tracker['code_signature']).rstrip('.').lstrip('.').replace('.', '/').replace('\/', '/').split('|')
for sig in code_signature:
if len(re.sub('[^a-zA-Z0-9/_]', '', sig)) == 0:
continue
if self.kitsconfig.is_pattern_present(sig):
# logging.debug(f'Not adding tracker={tracker["name"]}'
# f' as pattern={sig} is already present')
break
# sanitize name
name = re.sub('[^a-zA-Z0-9]', '', tracker['name']).lower()
# if our signature is more generic, nothing to do
if name in self.kits:
# our signature is less generic / missing a pattern
logging.debug(f'name={name} sig={sig} pattern={self.kitsconfig.get_pattern(name)}')
logging.warning(f'You should add pattern={sig}'
f' in tracker={tracker["name"]}')
break
logging.debug(f'Adding Exodus Tracker: {name}')
config[name] = {}
config[name]['description'] = f'{tracker["name"]} (from ETIP Exodus Privacy list)'
config[name]['pattern'] = '|'.join(code_signature)
break
logging.debug('Appending imported trackers '
f'to {self.config.KIT_CONFIGFILE}')
with open(self.config.KIT_CONFIGFILE, 'a') as configfile:
config.write(configfile)
def write(self, sql):
Session = sessionmaker(bind=sql.engine)
session = Session()
sample = droidsql.Sample(sha256=self.sha256,
sanitized_basename=self.sanitized_basename,
file_nb_classes=self.file_nb_classes,
file_nb_dir=self.file_nb_dir,
file_size=self.file_size,
file_small=self.file_small,
filetype=self.filetype,
file_innerzips=self.file_innerzips,
manifest_properties=json.dumps(self.manifest),
smali_properties=json.dumps(self.smali),
wide_properties=json.dumps(self.wide),
arm_properties=json.dumps(self.arm),
dex_properties=json.dumps(self.dex),
kits=json.dumps(self.kits))
session.add(sample)
try:
session.commit()
except sqlalchemy.exc.IntegrityError:
# occurs when the sample with the same sha256 is already in
logging.debug("Sample is already in the database")
def dump_json(self, filename='report.json'):
data = {'sanitized_basename': self.sanitized_basename,
'file_nb_classes': self.file_nb_classes,
'file_nb_dir': self.file_nb_dir,
'file_size': self.file_size,
'file_small': self.file_small,
'filetype': self.filetype,
'file_innerzips': self.file_innerzips,
'manifest_properties': self.manifest,
'smali_properties': self.smali,
'wide_properties': self.wide,
'arm_properties': self.arm,
'dex_properties': self.dex,
'kits': self.kits
}
if self.verbose:
print("-------------")
print("Dumping to JSON file {}".format(filename))
f = open(filename, 'w')
f.write(json.dumps(data))
f.close()
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