mirror of https://github.com/mvt-project/mvt.git
97 lines
3.6 KiB
Python
97 lines
3.6 KiB
Python
# Mobile Verification Toolkit (MVT)
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# Copyright (c) 2021 The MVT Project Authors.
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# Use of this software is governed by the MVT License 1.1 that can be found at
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# https://license.mvt.re/1.1/
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import sqlite3
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from base64 import b64encode
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from mvt.common.utils import (check_for_links, convert_mactime_to_unix,
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convert_timestamp_to_iso)
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from ..base import IOSExtraction
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SMS_BACKUP_IDS = [
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"3d0d7e5fb2ce288813306e4d4636395e047a3d28",
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]
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SMS_ROOT_PATHS = [
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"private/var/mobile/Library/SMS/sms.db",
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]
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class SMS(IOSExtraction):
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"""This module extracts all SMS messages containing links."""
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def __init__(self, file_path=None, base_folder=None, output_folder=None,
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fast_mode=False, log=None, results=[]):
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super().__init__(file_path=file_path, base_folder=base_folder,
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output_folder=output_folder, fast_mode=fast_mode,
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log=log, results=results)
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def serialize(self, record):
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text = record["text"].replace("\n", "\\n")
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return {
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"timestamp": record["isodate"],
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"module": self.__class__.__name__,
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"event": "sms_received",
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"data": f"{record['service']}: {record['guid']} \"{text}\" from {record['phone_number']} ({record['account']})"
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}
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def check_indicators(self):
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if not self.indicators:
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return
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for message in self.results:
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message_links = check_for_links(message.get("text", ""))
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if self.indicators.check_domains(message_links):
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self.detected.append(message)
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def run(self):
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self._find_ios_database(backup_ids=SMS_BACKUP_IDS,
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root_paths=SMS_ROOT_PATHS)
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self.log.info("Found SMS database at path: %s", self.file_path)
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conn = sqlite3.connect(self.file_path)
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cur = conn.cursor()
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cur.execute("""
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SELECT
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message.*,
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handle.id as "phone_number"
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FROM message, handle
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WHERE handle.rowid = message.handle_id;
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""")
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names = [description[0] for description in cur.description]
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for item in cur:
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message = {}
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for index, value in enumerate(item):
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# We base64 escape some of the attributes that could contain
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# binary data.
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if (names[index] == "attributedBody" or
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names[index] == "payload_data" or
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names[index] == "message_summary_info") and value:
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value = b64encode(value).decode()
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# We store the value of each column under the proper key.
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message[names[index]] = value
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# We convert Mac's ridiculous timestamp format.
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message["isodate"] = convert_timestamp_to_iso(convert_mactime_to_unix(message["date"]))
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message["direction"] = ("sent" if message.get("is_from_me", 0) == 1 else "received")
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# Sometimes "text" is None instead of empty string.
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if not message.get("text", None):
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message["text"] = ""
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# Extract links from the SMS message.
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message_links = check_for_links(message.get("text", ""))
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# If we find links in the messages or if they are empty we add them to the list.
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if message_links or message.get("text", "").strip() == "":
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self.results.append(message)
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cur.close()
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conn.close()
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self.log.info("Extracted a total of %d SMS messages containing links", len(self.results))
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