Files
krawl.es/src/deception_responses.py
2026-02-15 15:10:41 +01:00

655 lines
22 KiB
Python

#!/usr/bin/env python3
import re
import random
import logging
import json
from typing import Optional, Tuple, Dict
from generators import random_username, random_password, random_email
from wordlists import get_wordlists
logger = logging.getLogger("krawl")
def detect_path_traversal(path: str, query: str = "", body: str = "") -> bool:
"""Detect path traversal attempts in request"""
full_input = f"{path} {query} {body}"
wl = get_wordlists()
pattern = wl.attack_patterns.get("path_traversal", "")
if not pattern:
# Fallback pattern if wordlists not loaded
pattern = r"(\.\.|%2e%2e|/etc/passwd|/etc/shadow)"
if re.search(pattern, full_input, re.IGNORECASE):
logger.debug(f"Path traversal detected in {full_input[:100]}")
return True
return False
def detect_xxe_injection(body: str) -> bool:
"""Detect XXE injection attempts in XML payloads"""
if not body:
return False
wl = get_wordlists()
pattern = wl.attack_patterns.get("xxe_injection", "")
if not pattern:
# Fallback pattern if wordlists not loaded
pattern = r"(<!ENTITY|<!DOCTYPE|SYSTEM|PUBLIC|file://)"
if re.search(pattern, body, re.IGNORECASE):
return True
return False
def detect_command_injection(path: str, query: str = "", body: str = "") -> bool:
"""Detect command injection attempts"""
full_input = f"{path} {query} {body}"
logger.debug(
f"[CMD_INJECTION_CHECK] path='{path}' query='{query}' body='{body[:50] if body else ''}'"
)
logger.debug(f"[CMD_INJECTION_CHECK] full_input='{full_input[:200]}'")
wl = get_wordlists()
pattern = wl.attack_patterns.get("command_injection", "")
if not pattern:
# Fallback pattern if wordlists not loaded
pattern = r"(cmd=|exec=|command=|&&|;|\||whoami|id|uname|cat|ls)"
if re.search(pattern, full_input, re.IGNORECASE):
logger.debug(f"[CMD_INJECTION_CHECK] Command injection pattern matched!")
return True
logger.debug(f"[CMD_INJECTION_CHECK] No command injection detected")
return False
def generate_fake_passwd() -> str:
"""Generate fake /etc/passwd content"""
wl = get_wordlists()
passwd_config = wl.fake_passwd
if not passwd_config:
# Fallback
return "root:x:0:0:root:/root:/bin/bash\nwww-data:x:33:33:www-data:/var/www:/usr/sbin/nologin"
users = passwd_config.get("system_users", [])
uid_min = passwd_config.get("uid_min", 1000)
uid_max = passwd_config.get("uid_max", 2000)
gid_min = passwd_config.get("gid_min", 1000)
gid_max = passwd_config.get("gid_max", 2000)
shells = passwd_config.get("shells", ["/bin/bash"])
fake_users = [
f"{random_username()}:x:{random.randint(uid_min, uid_max)}:{random.randint(gid_min, gid_max)}::/home/{random_username()}:{random.choice(shells)}"
for _ in range(3)
]
return "\n".join(users + fake_users)
def generate_fake_shadow() -> str:
"""Generate fake /etc/shadow content"""
wl = get_wordlists()
shadow_config = wl.fake_shadow
if not shadow_config:
# Fallback
return "root:$6$rounds=656000$fake_salt_here$fake_hash_data:19000:0:99999:7:::"
entries = shadow_config.get("system_entries", [])
hash_prefix = shadow_config.get("hash_prefix", "$6$rounds=656000$")
salt_length = shadow_config.get("salt_length", 16)
hash_length = shadow_config.get("hash_length", 86)
fake_entries = [
f"{random_username()}:{hash_prefix}{''.join(random.choices('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', k=salt_length))}${''.join(random.choices('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', k=hash_length))}:19000:0:99999:7:::"
for _ in range(3)
]
return "\n".join(entries + fake_entries)
def generate_fake_config_file(filename: str) -> str:
"""Generate fake configuration file content"""
configs = {
"config.php": """<?php
define('DB_HOST', 'localhost');
define('DB_NAME', 'app_database');
define('DB_USER', 'db_user');
define('DB_PASSWORD', 'fake_pass_123');
define('SECRET_KEY', 'fake_secret_key_xyz789');
define('API_ENDPOINT', 'https://api.example.com');
?>""",
"application.properties": """# Database Configuration
spring.datasource.url=jdbc:mysql://localhost:3306/appdb
spring.datasource.username=dbuser
spring.datasource.password=fake_password_123
server.port=8080
jwt.secret=fake_jwt_secret_key_456""",
".env": """DB_HOST=localhost
DB_PORT=3306
DB_NAME=production_db
DB_USER=app_user
DB_PASSWORD=fake_env_password_789
API_KEY=fake_api_key_abc123
SECRET_TOKEN=fake_secret_token_xyz""",
}
for key in configs:
if key.lower() in filename.lower():
return configs[key]
return f"""# Configuration File
api_endpoint = https://api.example.com
api_key = fake_key_{random.randint(1000, 9999)}
database_url = mysql://user:fake_pass@localhost/db
secret = fake_secret_{random.randint(10000, 99999)}
"""
def generate_fake_directory_listing(path: str) -> str:
"""Generate fake directory listing"""
wl = get_wordlists()
dir_config = wl.directory_listing
if not dir_config:
# Fallback
return f"<html><head><title>Index of {path}</title></head><body><h1>Index of {path}</h1></body></html>"
fake_dirs = dir_config.get("fake_directories", [])
fake_files = dir_config.get("fake_files", [])
directories = [(d["name"], d["size"], d["perms"]) for d in fake_dirs]
files = [
(f["name"], str(random.randint(f["size_min"], f["size_max"])), f["perms"])
for f in fake_files
]
html = f"<html><head><title>Index of {path}</title></head><body>"
html += f"<h1>Index of {path}</h1><hr><pre>"
html += f"{'Name':<40} {'Size':<10} {'Permissions':<15}\n"
html += "-" * 70 + "\n"
for name, size, perms in directories:
html += f"{name + '/':<40} {size:<10} {perms:<15}\n"
for name, size, perms in files:
html += f"{name:<40} {size:<10} {perms:<15}\n"
html += "</pre><hr></body></html>"
return html
def generate_path_traversal_response(path: str) -> Tuple[str, str, int]:
"""Generate fake response for path traversal attempts"""
path_lower = path.lower()
logger.debug(f"Generating path traversal response for: {path}")
if "passwd" in path_lower:
logger.debug("Returning fake passwd file")
return (generate_fake_passwd(), "text/plain", 200)
if "shadow" in path_lower:
logger.debug("Returning fake shadow file")
return (generate_fake_shadow(), "text/plain", 200)
if any(
ext in path_lower for ext in [".conf", ".config", ".php", ".env", ".properties"]
):
logger.debug("Returning fake config file")
return (generate_fake_config_file(path), "text/plain", 200)
if "proc/self" in path_lower:
logger.debug("Returning fake proc info")
return (f"{random.randint(1000, 9999)}", "text/plain", 200)
logger.debug("Returning fake directory listing")
return (generate_fake_directory_listing(path), "text/html", 200)
def generate_xxe_response(body: str) -> Tuple[str, str, int]:
"""Generate fake response for XXE injection attempts"""
wl = get_wordlists()
xxe_config = wl.xxe_responses
if "file://" in body:
if "passwd" in body:
content = generate_fake_passwd()
elif "shadow" in body:
content = generate_fake_shadow()
else:
content = (
xxe_config.get("default_content", "root:x:0:0:root:/root:/bin/bash")
if xxe_config
else "root:x:0:0:root:/root:/bin/bash"
)
if xxe_config and "file_access" in xxe_config:
template = xxe_config["file_access"]["template"]
response = template.replace("{content}", content)
else:
response = f"""<?xml version="1.0"?>
<response>
<status>success</status>
<data>{content}</data>
</response>"""
return (response, "application/xml", 200)
if "ENTITY" in body:
if xxe_config and "entity_processed" in xxe_config:
template = xxe_config["entity_processed"]["template"]
entity_values = xxe_config["entity_processed"]["entity_values"]
entity_value = random.choice(entity_values)
response = template.replace("{entity_value}", entity_value)
else:
response = """<?xml version="1.0"?>
<response>
<status>success</status>
<message>Entity processed successfully</message>
<entity_value>fake_entity_content_12345</entity_value>
</response>"""
return (response, "application/xml", 200)
if xxe_config and "error" in xxe_config:
template = xxe_config["error"]["template"]
messages = xxe_config["error"]["messages"]
message = random.choice(messages)
response = template.replace("{message}", message)
else:
response = """<?xml version="1.0"?>
<response>
<status>error</status>
<message>External entity processing disabled</message>
</response>"""
return (response, "application/xml", 200)
def generate_command_injection_response(input_text: str) -> Tuple[str, str, int]:
"""Generate fake command execution output"""
wl = get_wordlists()
cmd_config = wl.command_outputs
input_lower = input_text.lower()
# id command
if re.search(r"\bid\b", input_lower):
if cmd_config and "id" in cmd_config:
uid = random.randint(
cmd_config.get("uid_min", 1000), cmd_config.get("uid_max", 2000)
)
gid = random.randint(
cmd_config.get("gid_min", 1000), cmd_config.get("gid_max", 2000)
)
template = random.choice(cmd_config["id"])
output = template.replace("{uid}", str(uid)).replace("{gid}", str(gid))
else:
output = f"uid={random.randint(1000, 2000)}(www-data) gid={random.randint(1000, 2000)}(www-data) groups={random.randint(1000, 2000)}(www-data)"
return (output, "text/plain", 200)
# whoami command
if re.search(r"\bwhoami\b", input_lower):
users = cmd_config.get("whoami", ["www-data"]) if cmd_config else ["www-data"]
return (random.choice(users), "text/plain", 200)
# uname command
if re.search(r"\buname\b", input_lower):
outputs = (
cmd_config.get("uname", ["Linux server 5.4.0 x86_64"])
if cmd_config
else ["Linux server 5.4.0 x86_64"]
)
return (random.choice(outputs), "text/plain", 200)
# pwd command
if re.search(r"\bpwd\b", input_lower):
paths = (
cmd_config.get("pwd", ["/var/www/html"])
if cmd_config
else ["/var/www/html"]
)
return (random.choice(paths), "text/plain", 200)
# ls command
if re.search(r"\bls\b", input_lower):
if cmd_config and "ls" in cmd_config:
files = random.choice(cmd_config["ls"])
else:
files = ["index.php", "config.php", "uploads"]
output = "\n".join(
random.sample(files, k=random.randint(3, min(6, len(files))))
)
return (output, "text/plain", 200)
# cat command
if re.search(r"\bcat\b", input_lower):
if "passwd" in input_lower:
return (generate_fake_passwd(), "text/plain", 200)
if "shadow" in input_lower:
return (generate_fake_shadow(), "text/plain", 200)
cat_content = (
cmd_config.get("cat_config", "<?php\n$config = 'fake';\n?>")
if cmd_config
else "<?php\n$config = 'fake';\n?>"
)
return (cat_content, "text/plain", 200)
# echo command
if re.search(r"\becho\b", input_lower):
match = re.search(r"echo\s+(.+?)(?:[;&|]|$)", input_text, re.IGNORECASE)
if match:
return (match.group(1).strip("\"'"), "text/plain", 200)
return ("", "text/plain", 200)
# network commands
if any(cmd in input_lower for cmd in ["wget", "curl", "nc", "netcat"]):
if cmd_config and "network_commands" in cmd_config:
outputs = cmd_config["network_commands"]
output = random.choice(outputs)
if "{size}" in output:
size = random.randint(
cmd_config.get("download_size_min", 100),
cmd_config.get("download_size_max", 10000),
)
output = output.replace("{size}", str(size))
else:
outputs = ["bash: command not found", "Connection timeout"]
output = random.choice(outputs)
return (output, "text/plain", 200)
# generic outputs
if cmd_config and "generic" in cmd_config:
generic_outputs = cmd_config["generic"]
output = random.choice(generic_outputs)
if "{num}" in output:
output = output.replace("{num}", str(random.randint(1, 99)))
else:
generic_outputs = ["", "Command executed successfully", "sh: syntax error"]
output = random.choice(generic_outputs)
return (output, "text/plain", 200)
def detect_sql_injection_pattern(query_string: str) -> Optional[str]:
"""Detect SQL injection patterns in query string"""
if not query_string:
return None
query_lower = query_string.lower()
patterns = {
"quote": [r"'", r'"', r"`"],
"comment": [r"--", r"#", r"/\*", r"\*/"],
"union": [r"\bunion\b", r"\bunion\s+select\b"],
"boolean": [r"\bor\b.*=.*", r"\band\b.*=.*", r"'.*or.*'.*=.*'"],
"time_based": [r"\bsleep\b", r"\bwaitfor\b", r"\bdelay\b", r"\bbenchmark\b"],
"stacked": [r";.*select", r";.*drop", r";.*insert", r";.*update", r";.*delete"],
"command": [r"\bexec\b", r"\bexecute\b", r"\bxp_cmdshell\b"],
"info_schema": [r"information_schema", r"table_schema", r"table_name"],
}
for injection_type, pattern_list in patterns.items():
for pattern in pattern_list:
if re.search(pattern, query_lower):
logger.debug(f"SQL injection pattern '{injection_type}' detected")
return injection_type
return None
def get_random_sql_error(
db_type: str = None, injection_type: str = None
) -> Tuple[str, str]:
"""Generate a random SQL error message"""
wl = get_wordlists()
sql_errors = wl.sql_errors
if not sql_errors:
return ("Database error occurred", "text/plain")
if not db_type:
db_type = random.choice(list(sql_errors.keys()))
db_errors = sql_errors.get(db_type, {})
if injection_type and injection_type in db_errors:
errors = db_errors[injection_type]
elif "generic" in db_errors:
errors = db_errors["generic"]
else:
all_errors = []
for error_list in db_errors.values():
if isinstance(error_list, list):
all_errors.extend(error_list)
errors = all_errors if all_errors else ["Database error occurred"]
error_message = random.choice(errors) if errors else "Database error occurred"
if "{table}" in error_message:
tables = ["users", "products", "orders", "customers", "accounts", "sessions"]
error_message = error_message.replace("{table}", random.choice(tables))
if "{column}" in error_message:
columns = ["id", "name", "email", "password", "username", "created_at"]
error_message = error_message.replace("{column}", random.choice(columns))
return (error_message, "text/plain")
def generate_sql_error_response(
query_string: str, db_type: str = None
) -> Tuple[Optional[str], Optional[str], Optional[int]]:
"""Generate SQL error response for detected injection attempts"""
injection_type = detect_sql_injection_pattern(query_string)
if not injection_type:
return (None, None, None)
error_message, content_type = get_random_sql_error(db_type, injection_type)
status_code = 500
if random.random() < 0.3:
status_code = 200
logger.info(f"SQL injection detected: {injection_type}")
return (error_message, content_type, status_code)
def get_sql_response_with_data(path: str, params: str) -> str:
"""Generate fake SQL query response with data"""
injection_type = detect_sql_injection_pattern(params)
if injection_type in ["union", "boolean", "stacked"]:
data = {
"success": True,
"results": [
{
"id": i,
"username": random_username(),
"email": random_email(),
"password_hash": random_password(),
"role": random.choice(["admin", "user", "moderator"]),
}
for i in range(1, random.randint(2, 5))
],
}
return json.dumps(data, indent=2)
return json.dumps(
{"success": True, "message": "Query executed successfully", "results": []},
indent=2,
)
def detect_xss_pattern(input_string: str) -> bool:
"""Detect XSS patterns in input"""
if not input_string:
return False
wl = get_wordlists()
xss_pattern = wl.attack_patterns.get("xss_attempt", "")
if not xss_pattern:
xss_pattern = r"(<script|</script|javascript:|onerror=|onload=|onclick=|<iframe|<img|<svg|eval\(|alert\()"
detected = bool(re.search(xss_pattern, input_string, re.IGNORECASE))
if detected:
logger.debug(f"XSS pattern detected in input")
return detected
def generate_xss_response(input_data: dict) -> str:
"""Generate response for XSS attempts with reflected content"""
xss_detected = False
reflected_content = []
for key, value in input_data.items():
if detect_xss_pattern(value):
xss_detected = True
reflected_content.append(f"<p><strong>{key}:</strong> {value}</p>")
if xss_detected:
logger.info("XSS attempt detected and reflected")
html = f"""
<!DOCTYPE html>
<html>
<head>
<title>Submission Received</title>
<style>
body {{ font-family: Arial, sans-serif; max-width: 600px; margin: 50px auto; padding: 20px; }}
.success {{ background: #d4edda; padding: 20px; border-radius: 8px; border: 1px solid #c3e6cb; }}
h2 {{ color: #155724; }}
p {{ margin: 10px 0; }}
</style>
</head>
<body>
<div class="success">
<h2>Thank you for your submission!</h2>
<p>We have received your information:</p>
{''.join(reflected_content)}
<p><em>We will get back to you shortly.</em></p>
</div>
</body>
</html>
"""
return html
return """
<!DOCTYPE html>
<html>
<head>
<title>Submission Received</title>
<style>
body { font-family: Arial, sans-serif; max-width: 600px; margin: 50px auto; padding: 20px; }
.success { background: #d4edda; padding: 20px; border-radius: 8px; border: 1px solid #c3e6cb; }
h2 { color: #155724; }
</style>
</head>
<body>
<div class="success">
<h2>Thank you for your submission!</h2>
<p>Your message has been received and we will respond soon.</p>
</div>
</body>
</html>
"""
def generate_server_error() -> Tuple[str, str]:
"""Generate fake server error page"""
wl = get_wordlists()
server_errors = wl.server_errors
if not server_errors:
return ("500 Internal Server Error", "text/html")
server_type = random.choice(list(server_errors.keys()))
server_config = server_errors[server_type]
error_codes = {
400: "Bad Request",
401: "Unauthorized",
403: "Forbidden",
404: "Not Found",
500: "Internal Server Error",
502: "Bad Gateway",
503: "Service Unavailable",
}
code = random.choice(list(error_codes.keys()))
message = error_codes[code]
template = server_config.get("template", "")
version = random.choice(server_config.get("versions", ["1.0"]))
html = template.replace("{code}", str(code))
html = html.replace("{message}", message)
html = html.replace("{version}", version)
if server_type == "apache":
os = random.choice(server_config.get("os", ["Ubuntu"]))
html = html.replace("{os}", os)
html = html.replace("{host}", "localhost")
logger.debug(f"Generated {server_type} server error: {code}")
return (html, "text/html")
def get_server_header(server_type: str = None) -> str:
"""Get a fake server header string"""
wl = get_wordlists()
server_errors = wl.server_errors
if not server_errors:
return "nginx/1.18.0"
if not server_type:
server_type = random.choice(list(server_errors.keys()))
server_config = server_errors.get(server_type, {})
version = random.choice(server_config.get("versions", ["1.0"]))
server_headers = {
"nginx": f"nginx/{version}",
"apache": f"Apache/{version}",
"iis": f"Microsoft-IIS/{version}",
"tomcat": f"Apache-Coyote/1.1",
}
return server_headers.get(server_type, "nginx/1.18.0")
def detect_and_respond_deception(
path: str, query: str = "", body: str = "", method: str = "GET"
) -> Optional[Tuple[str, str, int]]:
"""
Main deception detection and response function.
Returns (response_body, content_type, status_code) if deception should be applied, None otherwise.
"""
logger.debug(
f"Checking deception for {method} {path} query={query[:50] if query else 'empty'}"
)
if detect_path_traversal(path, query, body):
logger.info(f"Path traversal detected in: {path}")
return generate_path_traversal_response(f"{path}?{query}" if query else path)
if body and detect_xxe_injection(body):
logger.info(f"XXE injection detected")
return generate_xxe_response(body)
if detect_command_injection(path, query, body):
logger.info(f"Command injection detected in: {path}")
full_input = f"{path} {query} {body}"
return generate_command_injection_response(full_input)
return None