From 7543a95711e7ee31add94857fdaa174d0e6f498f Mon Sep 17 00:00:00 2001 From: Guillaume BOURGEOIS Date: Sun, 12 Jul 2026 22:59:18 +0200 Subject: [PATCH] feat(feed): add DShield block list feed connector (SANS ISC) --- integrations/feed-dshield/manifest.yaml | 38 ++++++++++ .../feed-dshield/scripts/fetch_indicators.py | 70 +++++++++++++++++++ .../feed-dshield/scripts/test_connection.py | 47 +++++++++++++ 3 files changed, 155 insertions(+) create mode 100644 integrations/feed-dshield/manifest.yaml create mode 100644 integrations/feed-dshield/scripts/fetch_indicators.py create mode 100644 integrations/feed-dshield/scripts/test_connection.py diff --git a/integrations/feed-dshield/manifest.yaml b/integrations/feed-dshield/manifest.yaml new file mode 100644 index 0000000..640e19f --- /dev/null +++ b/integrations/feed-dshield/manifest.yaml @@ -0,0 +1,38 @@ +id: feed_dshield +name: DShield Block List Feed +version: 1.0.0 +description: "SANS Internet Storm Center DShield feed connector — pull the recommended block list (networks responsible for the most attacks seen by the DShield sensor network) and emit normalized IOCs (CIDR + type, with country) for import into the Threat Indicator Manager. Free, no authentication required; stdlib-only, no extra Python dependencies." +changelog: "1.0.0 — Initial release: fetch the DShield recommended block list." +category: feed + +# The DShield block list is a free SANS ISC feed served over HTTPS. No key needed. +config_schema: + properties: + feed_url: + type: string + description: "Override the block-list URL (default https://feeds.dshield.org/block.txt)" + insecure: + type: boolean + description: "Trust any TLS certificate (not secure)" + default: false + required: [] + +commands: + - id: fetch_indicators + name: feed-dshield-fetch-indicators + description: "Fetch the DShield block list and return normalized indicators." + risk: read + inputs_schema: + properties: + max_indicators: { type: number, description: "Max indicators to return (0 = no limit, default 0)" } + required: [] + outputs_schema: { properties: {} } + + - id: test_connection + name: feed-dshield-test-connection + description: "Verify the DShield feed is reachable (used by the Test button)." + risk: read + inputs_schema: + properties: {} + required: [] + outputs_schema: { properties: {} } diff --git a/integrations/feed-dshield/scripts/fetch_indicators.py b/integrations/feed-dshield/scripts/fetch_indicators.py new file mode 100644 index 0000000..bf5f0bc --- /dev/null +++ b/integrations/feed-dshield/scripts/fetch_indicators.py @@ -0,0 +1,70 @@ +import json, os, sys, ssl, urllib.request, urllib.error + +DEFAULT_URL = "https://feeds.dshield.org/block.txt" + + +def _cfg(): + return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}")) + + +def _inputs(): + return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}")) + + +def _ctx(cfg): + if cfg.get("insecure"): + c = ssl.create_default_context() + c.check_hostname = False + c.verify_mode = ssl.CERT_NONE + return c + return None + + +def _get(url, cfg): + req = urllib.request.Request(url, headers={"User-Agent": "Riposte-SOAR"}) + with urllib.request.urlopen(req, timeout=120, context=_ctx(cfg)) as r: + return r.read() + + +def _run(fn): + try: + print(json.dumps(fn(_cfg(), _inputs()))) + except urllib.error.HTTPError as e: + print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")})) + sys.exit(1) + except Exception as e: + print(json.dumps({"error": str(e)})) + sys.exit(1) + + +def main(cfg, inputs): + url = cfg.get("feed_url") or DEFAULT_URL + raw = _get(url, cfg).decode("utf-8", "replace") + + maxn = int(inputs.get("max_indicators") or 0) + out = [] + for line in raw.splitlines(): + line = line.rstrip() + if not line or line.lstrip().startswith("#"): + continue + # tab-separated: Start End Netmask Attacks Name Country Email + cols = line.split("\t") + if len(cols) < 3: + cols = line.split() + if len(cols) < 3: + continue + start = cols[0].strip() + netmask = cols[2].strip() + if start.count(".") != 3 or not netmask.isdigit(): + continue + item = {"value": start + "/" + netmask, "type": "cidr", "start": start, "netmask": netmask} + if len(cols) > 5 and cols[5].strip(): + item["country"] = cols[5].strip() + out.append(item) + if maxn and len(out) >= maxn: + break + + return {"source": "dshield:block", "count": len(out), "indicators": out} + + +_run(main) diff --git a/integrations/feed-dshield/scripts/test_connection.py b/integrations/feed-dshield/scripts/test_connection.py new file mode 100644 index 0000000..b4d79dd --- /dev/null +++ b/integrations/feed-dshield/scripts/test_connection.py @@ -0,0 +1,47 @@ +import json, os, sys, ssl, urllib.request, urllib.error + +DEFAULT_URL = "https://feeds.dshield.org/block.txt" + + +def _cfg(): + return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}")) + + +def _inputs(): + return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}")) + + +def _ctx(cfg): + if cfg.get("insecure"): + c = ssl.create_default_context() + c.check_hostname = False + c.verify_mode = ssl.CERT_NONE + return c + return None + + +def _get(url, cfg): + req = urllib.request.Request(url, headers={"User-Agent": "Riposte-SOAR"}) + with urllib.request.urlopen(req, timeout=60, context=_ctx(cfg)) as r: + return r.read() + + +def _run(fn): + try: + print(json.dumps(fn(_cfg(), _inputs()))) + except urllib.error.HTTPError as e: + print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")})) + sys.exit(1) + except Exception as e: + print(json.dumps({"error": str(e)})) + sys.exit(1) + + +def main(cfg, inputs): + url = cfg.get("feed_url") or DEFAULT_URL + raw = _get(url, cfg).decode("utf-8", "replace") + n = sum(1 for ln in raw.splitlines() if ln and not ln.lstrip().startswith("#")) + return {"ok": True, "sample_lines": n} + + +_run(main)