Create codeql.yml #593
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Create codeql.yml #593
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"""
Core Defense Module
- Integrity monitoring (SHA256 tripwire)
- Decoy file layer generator
- Encrypted read-only snapshot (ghost copy)
- Key rotation (symmetric keys)
- Alerts via Telegram
- Best-effort auto-isolation (requires root for full effect)
Configure the CONFIG block below before running.
"""
import os
import sys
import time
import json
import hashlib
import shutil
import threading
import tempfile
import traceback
from datetime import datetime, timedelta
from pathlib import Path
# External libs (install with pip): watchdog, cryptography, requests
try:
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
from cryptography.fernet import Fernet
import requests
except Exception as e:
print("Missing dependencies. Run: pip install watchdog cryptography requests")
raise
# -------- CONFIG --------
CONFIG = {
"MONITOR_DIRS": ["/data/data/com.termux/files/home/core"], # directories to watch (list)
"SNAPSHOT_DIR": "/data/data/com.termux/files/home/core_snapshots", # where to keep encrypted snapshots
"DECoy_DIR": "/data/data/com.termux/files/home/core_decoys", # decoy files live here
"TRIPWIRE_DB": "/data/data/com.termux/files/home/.core_tripwire.json", # stored hash db
"KEY_FILE": "/data/data/com.termux/files/home/.core_defense_key", # current symmetric key
"KEY_ROTATION_DAYS": 7, # rotate key every N days
"SNAPSHOT_ON_BREACH": True,
"MAX_SNAPSHOTS": 6,
"TELEGRAM_BOT_TOKEN": "CHANGE_THIS", # set to your bot token or leave blank
"TELEGRAM_CHAT_ID": "CHANGE_THIS", # set to your chat id or leave blank
"ALERT_ON_EVENTS": True,
"ISOLATE_ON_BREACH": True,
"ISOLATION_TIMEOUT_SECONDS": 30,
"DECoy_COUNT": 5,
"LOG_FILE": "/data/data/com.termux/files/home/core_defense.log"
}
# ------------------------
def log(msg):
ts = datetime.utcnow().isoformat() + "Z"
entry = f"[{ts}] {msg}"
print(entry)
try:
with open(CONFIG["LOG_FILE"], "a") as f:
f.write(entry + "\n")
except Exception:
pass
# ---------- Key Management ----------
def ensure_key():
key_path = Path(CONFIG["KEY_FILE"])
if key_path.exists():
key = key_path.read_bytes().strip()
return key
else:
key = Fernet.generate_key()
key_path.write_bytes(key)
os.chmod(key_path, 0o600)
log("Generated new symmetric key.")
return key
def rotate_key_if_needed():
key_path = Path(CONFIG["KEY_FILE"])
if not key_path.exists():
return ensure_key()
mtime = datetime.utcfromtimestamp(key_path.stat().st_mtime)
if datetime.utcnow() - mtime > timedelta(days=CONFIG["KEY_ROTATION_DAYS"]):
# rotate - archive old key
archive = str(key_path) + ".old-" + datetime.utcnow().strftime("%Y%m%dT%H%M%SZ")
shutil.copy2(str(key_path), archive)
key = Fernet.generate_key()
key_path.write_bytes(key)
os.chmod(key_path, 0o600)
log(f"Key rotated. Old key saved as {archive}")
return key
return key_path.read_bytes().strip()
# ---------- Tripwire (SHA256 hashes) ----------
def file_sha256(path: Path):
h = hashlib.sha256()
try:
with path.open("rb") as f:
for chunk in iter(lambda: f.read(8192), b""):
h.update(chunk)
return h.hexdigest()
except Exception:
return None
def scan_and_update_hashes():
tripwire = {}
for base in CONFIG["MONITOR_DIRS"]:
basep = Path(base)
if not basep.exists():
continue
for p in basep.rglob("*"):
if p.is_file():
s = file_sha256(p)
if s:
tripwire[str(p)] = s
# persist
try:
with open(CONFIG["TRIPWIRE_DB"], "w") as f:
json.dump({"scanned_at": datetime.utcnow().isoformat(), "data": tripwire}, f)
except Exception as e:
log(f"Failed to write tripwire DB: {e}")
return tripwire
def load_tripwire():
try:
with open(CONFIG["TRIPWIRE_DB"], "r") as f:
db = json.load(f)
return db.get("data", {})
except Exception:
return {}
# ---------- Alerts ----------
def send_telegram(text):
if not CONFIG["TELEGRAM_BOT_TOKEN"] or "CHANGE_THIS" in CONFIG["TELEGRAM_BOT_TOKEN"]:
log("Telegram not configured; skipping alert: " + text[:120])
return False
try:
url = f"https://api.telegram.org/bot{CONFIG['TELEGRAM_BOT_TOKEN']}/sendMessage"
resp = requests.post(url, json={"chat_id": CONFIG["TELEGRAM_CHAT_ID"], "text": text})
if resp.status_code == 200:
return True
else:
log("Telegram send failed: " + resp.text)
return False
except Exception as e:
log("Telegram exception: " + str(e))
return False
def alert(msg):
log("ALERT: " + msg)
if CONFIG["ALERT_ON_EVENTS"]:
send_telegram(msg)
# ---------- Snapshot (encrypted ghost copy) ----------
def make_encrypted_snapshot(key):
stamp = datetime.utcnow().strftime("%Y%m%dT%H%M%SZ")
snapshot_temp = tempfile.mkdtemp(prefix="core_snapshot_")
try:
# copy monitored dirs
for base in CONFIG["MONITOR_DIRS"]:
basep = Path(base)
if basep.exists():
dest = Path(snapshot_temp) / basep.name
shutil.copytree(str(basep), str(dest))
# archive the snapshot
archive_path = Path(CONFIG["SNAPSHOT_DIR"])
archive_path.mkdir(parents=True, exist_ok=True)
tarfile = str(archive_path / f"snapshot_{stamp}.tar.gz")
shutil.make_archive(str(archive_path / f"snapshot_{stamp}"), 'gztar', snapshot_temp)
# encrypt
f = Fernet(key)
with open(tarfile, "rb") as tf:
data = tf.read()
enc = f.encrypt(data)
enc_path = tarfile + ".enc"
with open(enc_path, "wb") as ef:
ef.write(enc)
os.remove(tarfile)
# cleanup old snapshots
snapshots = sorted(Path(CONFIG["SNAPSHOT_DIR"]).glob("snapshot_*.tar.gz.enc"), key=os.path.getmtime, reverse=True)
for old in snapshots[CONFIG["MAX_SNAPSHOTS"]:]:
try:
old.unlink()
except: pass
…
Cbnc-Mk
approved these changes
Aug 12, 2025
Cbnc-Mk
approved these changes
Aug 12, 2025
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