Merge pull request #17 from leonardobambini/feat/randomized-server-header

Feat/randomized server header

README.md

@@ -185,7 +185,7 @@ To customize the deception server installation several **environment variables**
 | `CANARY_TOKEN_URL` | External canary token URL | None |
 | `DASHBOARD_SECRET_PATH` | Custom dashboard path | Auto-generated |
 | `PROBABILITY_ERROR_CODES` | Error response probability (0-100%) | `0` |
-| `SERVER_HEADER` | HTTP Server header for deception | `Apache/2.2.22 (Ubuntu)` |
+| `SERVER_HEADER` | HTTP Server header for deception, if not set use random server header | |
 | `TIMEZONE` | IANA timezone for logs and dashboard (e.g., `America/New_York`, `Europe/Rome`) | System timezone |
 
 ## robots.txt

docker-compose.yaml

@@ -20,7 +20,7 @@ services:
       - MAX_COUNTER=10
       - CANARY_TOKEN_TRIES=10
       - PROBABILITY_ERROR_CODES=0
-      - SERVER_HEADER=Apache/2.2.22 (Ubuntu)
+      # - SERVER_HEADER=Apache/2.2.22 (Ubuntu)
       # Optional: Set your canary token URL
       # - CANARY_TOKEN_URL=http://canarytokens.com/api/users/YOUR_TOKEN/passwords.txt
       # Optional: Set custom dashboard path (auto-generated if not set)

helm/templates/configmap.yaml

@@ -14,8 +14,13 @@ data:
   MAX_COUNTER: {{ .Values.config.maxCounter | quote }}
   CANARY_TOKEN_TRIES: {{ .Values.config.canaryTokenTries | quote }}
   PROBABILITY_ERROR_CODES: {{ .Values.config.probabilityErrorCodes | quote }}
-  SERVER_HEADER: {{ .Values.config.serverHeader | quote }}
   CANARY_TOKEN_URL: {{ .Values.config.canaryTokenUrl | quote }}
+  {{- if .Values.config.dashboardSecretPath }}
+  DASHBOARD_SECRET_PATH: {{ .Values.config.dashboardSecretPath | quote }}
+  {{- end }}
+  {{- if .Values.config.serverHeader }}
+  SERVER_HEADER: {{ .Values.config.serverHeader | quote }}
+  {{- end }}
   {{- if .Values.config.timezone }}
   TIMEZONE: {{ .Values.config.timezone | quote }}
   {{- end }}

helm/values.yaml

@@ -73,7 +73,9 @@ config:
   maxCounter: 10
   canaryTokenTries: 10
   probabilityErrorCodes: 0
-  serverHeader: "Apache/2.2.22 (Ubuntu)"
+# timezone: "UTC"
+#  serverHeader: "Apache/2.2.22 (Ubuntu)"
+#  dashboardSecretPath: "/my-secret-dashboard"
 #  canaryTokenUrl: set-your-canary-token-url-here
 #  timezone: "UTC"  # IANA timezone (e.g., "America/New_York", "Europe/Rome"). If not set, system timezone is used.
 
@@ -269,6 +271,17 @@ wordlists:
       - .git/
       - keys/
       - credentials/
+  server_headers:
+    - Apache/2.2.22 (Ubuntu)
+    - nginx/1.18.0
+    - Microsoft-IIS/10.0
+    - LiteSpeed
+    - Caddy
+    - Gunicorn/20.0.4
+    - uvicorn/0.13.4
+    - Express
+    - Flask/1.1.2
+    - Django/3.1
   error_codes:
     - 400
     - 401

src/config.py

@@ -23,7 +23,7 @@ class Config:
     api_server_port: int = 8080
     api_server_path: str = "/api/v2/users"
     probability_error_codes: int = 0  # Percentage (0-100)
-    server_header: str = "Apache/2.2.22 (Ubuntu)"
+    server_header: Optional[str] = None
     # Database settings
     database_path: str = "data/krawl.db"
     database_retention_days: int = 30
@@ -84,9 +84,10 @@ class Config:
             api_server_url=os.getenv('API_SERVER_URL'),
             api_server_port=int(os.getenv('API_SERVER_PORT', 8080)),
             api_server_path=os.getenv('API_SERVER_PATH', '/api/v2/users'),
-            server_header=os.getenv('SERVER_HEADER', 'Apache/2.2.22 (Ubuntu)'),
+            probability_error_codes=int(os.getenv('PROBABILITY_ERROR_CODES', 0)),
+            server_header=os.getenv('SERVER_HEADER')
             database_path=os.getenv('DATABASE_PATH', 'data/krawl.db'),
             database_retention_days=int(os.getenv('DATABASE_RETENTION_DAYS', 30)),
-            probability_error_codes=int(os.getenv('PROBABILITY_ERROR_CODES', 0)),
             timezone=os.getenv('TIMEZONE')  # If not set, will use system timezone
+
         )

src/generators.py

@@ -9,7 +9,8 @@ import string
 import json
 from templates import html_templates
 from wordlists import get_wordlists
-
+from config import Config
+from logger import get_app_logger
 
 def random_username() -> str:
     """Generate random username"""
@@ -36,6 +37,16 @@ def random_email(username: str = None) -> str:
         username = random_username()
     return f"{username}@{random.choice(wl.email_domains)}"
 
+def random_server_header() -> str:
+    """Generate random server header"""
+    
+    if Config.from_env().server_header:
+        server_header = Config.from_env().server_header
+    else:
+        wl = get_wordlists()
+        server_header = random.choice(wl.server_headers)
+    
+    return server_header
 
 def random_api_key() -> str:
     """Generate random API key"""

src/handler.py

@@ -13,7 +13,7 @@ from templates import html_templates
 from templates.dashboard_template import generate_dashboard
 from generators import (
     credentials_txt, passwords_txt, users_json, api_keys_json,
-    api_response, directory_listing
+    api_response, directory_listing, random_server_header
 )
 from wordlists import get_wordlists
 
@@ -52,7 +52,7 @@ class Handler(BaseHTTPRequestHandler):
 
     def version_string(self) -> str:
         """Return custom server version for deception."""
-        return self.config.server_header
+        return random_server_header()
 
     def _should_return_error(self) -> bool:
         """Check if we should return an error based on probability"""

src/wordlists.py

@@ -57,7 +57,8 @@ class Wordlists:
             },
             "users": {
                 "roles": ["Administrator", "User"]
-            }
+            },
+            "server_headers": ["Apache/2.4.41 (Ubuntu)", "nginx/1.18.0"]
         }
     
     @property
@@ -112,6 +113,10 @@ class Wordlists:
     def error_codes(self):
         return self._data.get("error_codes", [])
     
+    @property
+    def server_headers(self):
+        return self._data.get("server_headers", [])
+
 
 _wordlists_instance = None
 

wordlists.json

@@ -193,5 +193,13 @@
     500,
     502,
     503
+  ],
+  "server_headers": [
+    "Apache/2.4.41 (Ubuntu)",
+    "nginx/1.18.0",
+    "Microsoft-IIS/10.0",
+    "cloudflare",
+    "AmazonS3",
+    "gunicorn/20.1.0"
   ]
 }