216 lines
8.7 KiB
Python
216 lines
8.7 KiB
Python
#!/usr/bin/env python
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# Elasticsearch Recon Ingestion Scripts (ERIS) - Developed by Acidvegas (https://git.acid.vegas/eris)
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# ingest_certs.py
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import asyncio
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import json
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import logging
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try:
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import websockets
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except ImportError:
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raise ImportError('Missing required \'websockets\' library. (pip install websockets)')
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default_index = 'cert-stream'
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def construct_map() -> dict:
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'''Construct the Elasticsearch index mapping for Certstream records.'''
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keyword_mapping = { 'type': 'text', 'fields': { 'keyword': { 'type': 'keyword', 'ignore_above': 256 } } }
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mapping = {
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'mappings': {
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'properties': {
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'data': {
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'properties': {
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'cert_index': { 'type': 'integer' },
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'cert_link' : { 'type': 'keyword' },
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'leaf_cert' : {
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'properties': {
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'all_domains': { 'type': 'keyword' },
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'extensions': {
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'properties': {
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'authorityInfoAccess' : { 'type': 'text' },
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'authorityKeyIdentifier' : { 'type': 'text' },
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'basicConstraints' : { 'type': 'text' },
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'certificatePolicies' : { 'type': 'text' },
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'crlDistributionPoints' : { 'type': 'text' },
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'ctlPoisonByte' : { 'type': 'boolean' },
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'extendedKeyUsage' : { 'type': 'text' },
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'keyUsage' : { 'type': 'text' },
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'subjectAltName' : { 'type': 'text' },
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'subjectKeyIdentifier' : { 'type': 'text' }
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}
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},
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'fingerprint': { 'type': 'keyword' },
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'issuer': {
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'properties': {
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'C' : { 'type': 'keyword' },
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'CN' : { 'type': 'text' },
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'L' : { 'type': 'text' },
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'O' : { 'type': 'text' },
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'OU' : { 'type': 'text' },
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'ST' : { 'type': 'text' },
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'aggregated' : { 'type': 'text' },
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'emailAddress' : { 'type': 'text' }
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}
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},
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'not_after' : { 'type': 'integer' },
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'not_before' : { 'type': 'integer' },
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'serial_number' : { 'type': 'keyword' },
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'signature_algorithm' : { 'type': 'text' },
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'subject': {
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'properties': {
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'C' : { 'type': 'keyword' },
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'CN' : { 'type': 'text' },
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'L' : { 'type': 'text' },
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'O' : { 'type': 'text' },
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'OU' : { 'type': 'text' },
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'ST' : { 'type': 'text' },
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'aggregated' : { 'type': 'text' },
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'emailAddress' : { 'type': 'text' }
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}
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}
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}
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},
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'seen': { 'type': 'date', 'format': 'epoch_second' },
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'source': {
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'properties': {
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'name' : { 'type': 'keyword' },
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'url' : { 'type': 'keyword' }
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}
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},
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'update_type': { 'type': 'keyword' }
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}
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},
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'message_type': { 'type': 'keyword' }
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}
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}
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}
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return mapping
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async def process_data(file_path: str = None):
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'''
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Read and process Certsream records live from the Websocket stream.
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:param file_path: Path to the Certstream log file (unused, placeholder for consistency with other ingestors)
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'''
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while True:
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try:
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async with websockets.connect('wss://certstream.calidog.io/') as websocket:
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while True:
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line = await websocket.recv()
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if line == '~eof': # Sentinel value to indicate the end of a process (Used with --watch with FIFO)
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break
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try:
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record = json.loads(line)
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except json.decoder.JSONDecodeError:
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logging.error(f'Failed to parse JSON record from Certstream! ({line})')
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input('Press Enter to continue...')
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continue
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yield record
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except websockets.ConnectionClosed:
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logging.error('Connection to Certstream was closed. Attempting to reconnect...')
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await asyncio.sleep(15)
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except Exception as e:
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logging.error(f'An error occurred while processing Certstream records! ({e})')
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await asyncio.sleep(15)
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async def strip_struct_empty(data: dict) -> dict:
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'''
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Recursively remove empty values from a nested dictionary or list.
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:param data: The dictionary or list to clean.
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'''
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empties = [None, '', [], {}]
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if isinstance(data, dict):
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for key, value in list(data.items()):
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if value in empties:
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del data[key]
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else:
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cleaned_value = strip_struct_empty(value)
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if cleaned_value in empties:
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del data[key]
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else:
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data[key] = cleaned_value
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return data
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elif isinstance(data, list):
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return [strip_struct_empty(item) for item in data if item not in empties and strip_struct_empty(item) not in empties]
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else:
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return data
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'''
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Example record:
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{
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"data": {
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"cert_index": 43061646,
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"cert_link": "https://yeti2025.ct.digicert.com/log/ct/v1/get-entries?start=43061646&end=43061646",
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"leaf_cert": {
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"all_domains": [
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"*.d7zdnegbre53n.amplifyapp.com",
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"d7zdnegbre53n.amplifyapp.com"
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],
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"extensions": {
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"authorityInfoAccess": "CA Issuers - URI:http://crt.r2m02.amazontrust.com/r2m02.cer\nOCSP - URI:http://ocsp.r2m02.amazontrust.com\n",
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"authorityKeyIdentifier": "keyid:C0:31:52:CD:5A:50:C3:82:7C:74:71:CE:CB:E9:9C:F9:7A:EB:82:E2\n",
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"basicConstraints": "CA:FALSE",
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"certificatePolicies": "Policy: 2.23.140.1.2.1",
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"crlDistributionPoints": "Full Name:\n URI:http://crl.r2m02.amazontrust.com/r2m02.crl",
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"ctlPoisonByte": true,
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"extendedKeyUsage": "TLS Web server authentication, TLS Web client authentication",
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"keyUsage": "Digital Signature, Key Encipherment",
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"subjectAltName": "DNS:d7zdnegbre53n.amplifyapp.com, DNS:*.d7zdnegbre53n.amplifyapp.com",
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"subjectKeyIdentifier": "59:32:78:2A:11:03:62:55:BB:3B:B9:80:24:76:28:90:2E:D1:A4:56"
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},
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"fingerprint": "D9:05:A3:D5:AA:F9:68:BC:0C:0A:15:69:C9:5E:11:92:32:67:4F:FA",
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"issuer": {
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"C": "US",
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"CN": "Amazon RSA 2048 M02",
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"L": null,
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"O": "Amazon",
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"OU": null,
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"ST": null,
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"aggregated": "/C=US/CN=Amazon RSA 2048 M02/O=Amazon",
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"emailAddress": null
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},
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"not_after": 1743811199,
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"not_before": 1709596800,
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"serial_number": "FDB450C1942E3D30A18737063449E62",
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"signature_algorithm": "sha256, rsa",
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"subject": {
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"C": null,
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"CN": "*.d7zdnegbre53n.amplifyapp.com",
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"L": null,
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"O": null,
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"OU": null,
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"ST": null,
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"aggregated": "/CN=*.d7zdnegbre53n.amplifyapp.com",
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"emailAddress": null
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}
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},
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"seen": 1709651773.594684,
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"source": {
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"name": "DigiCert Yeti2025 Log",
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"url": "https://yeti2025.ct.digicert.com/log/"
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},
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"update_type": "PrecertLogEntry"
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},
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"message_type": "certificate_update"
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}
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''' |