mvt/mvt/android/modules/backup/sms.py

65 lines
2.2 KiB
Python

# Mobile Verification Toolkit (MVT)
# Copyright (c) 2021 The MVT Project Authors.
# Use of this software is governed by the MVT License 1.1 that can be found at
# https://license.mvt.re/1.1/
import json
import os
import zlib
from mvt.common.module import MVTModule
from mvt.common.utils import check_for_links
class SMS(MVTModule):
def __init__(self, file_path=None, base_folder=None, output_folder=None,
fast_mode=False, log=None, results=[]):
super().__init__(file_path=file_path, base_folder=base_folder,
output_folder=output_folder, fast_mode=fast_mode,
log=log, results=results)
def check_indicators(self):
if not self.indicators:
return
for message in self.results:
if "body" not in message:
continue
message_links = check_for_links(message["body"])
if self.indicators.check_domains(message_links):
self.detected.append(message)
def _process_sms_file(self, file_path):
self.log.info("Processing SMS backup file at %s", file_path)
with open(file_path, "rb") as handle:
data = zlib.decompress(handle.read())
json_data = json.loads(data)
for entry in json_data:
message_links = check_for_links(entry["body"])
# If we find links in the messages or if they are empty we add them to the list.
if message_links or entry["body"].strip() == "":
self.results.append(entry)
def run(self):
app_folder = os.path.join(self.base_folder,
"apps",
"com.android.providers.telephony",
"d_f")
if not os.path.exists(app_folder):
raise FileNotFoundError("Unable to find the SMS backup folder")
for file_name in os.listdir(app_folder):
if not file_name.endswith("_sms_backup"):
continue
file_path = os.path.join(app_folder, file_name)
self._process_sms_file(file_path)
self.log.info("Extracted a total of %d SMS messages containing links",
len(self.results))