S800 Vehicle Network Security Testing

reason-machines/security-skills/skills/s800-vehicle-network-security-testing

作者 reason-machines304c245fe992无许可证11 个星标收录于 2026年10月9日更新于 2026年10月9日仓库2个月前更新

Vehicle network security testing framework for automotive CAN bus and network protocol analysis

仅含说明Security
AI 生成的概览

指导汽车 CAN 总线与车载网络的安全测试,涵盖流量捕获、模糊测试、ECU 扫描、重放与 UDS 诊断。

功能
该技能提供车载网络安全测试框架的说明与 Python 使用示例,涉及 CAN 总线、LIN 和 FlexRay 协议。内容包括流量捕获与分析、CAN ID 模糊测试、ECU 指纹识别、会话重放、接口桥接以进行中间人修改、UDS 诊断、异常检测以及生成 HTML 报告的自动化安全评估。还涵盖配置文件、命令行命令、环境变量、故障排查与法律警示。
适用场景
适用于规划或记录经授权的车载网络安全评估,例如 CAN 流量分析、ECU 发现、协议模糊测试或重放测试。适合使用 CAN 硬件或虚拟 CAN 接口的汽车安全研究人员与渗透测试人员。不适用于未经授权对车辆或系统进行测试。
运行要求
需要 Python 3.7 或更高版本、Linux 上的 SocketCAN 内核模块、CAN 硬件接口或虚拟 CAN 接口,以及用于配置接口的 root/sudo 权限。涉及 python-can 等 Python 包和 can-utils 等系统工具,并可选使用环境变量设置接口、配置路径、输出目录以及带 API 密钥的远程分析 API 端点。该技能仅包含说明,不含脚本。

S800 Vehicle Network Security Testing Framework

Skill by ara.so — Security Skills collection.

Overview

S800 is a vehicle network security testing framework designed for automotive security researchers and penetration testers. It provides tools for analyzing, testing, and securing automotive networks including CAN bus, LIN, FlexRay, and other vehicle communication protocols. The framework enables security assessment of Electronic Control Units (ECUs), protocol fuzzing, traffic analysis, and vulnerability discovery in automotive systems.

Note: This is a testing framework. Only use on vehicles and systems you have explicit authorization to test. Unauthorized vehicle network testing may be illegal and dangerous.

Installation

Prerequisites

  • Python 3.7 or higher
  • SocketCAN kernel modules (Linux)
  • CAN hardware interface (USB-to-CAN adapter, OBD-II dongle, etc.)
  • Root/sudo access for network interface configuration

Basic Installation

bash
# Clone the repositorygit clone https://github.com/zhu-zhu666/S800-Vehicle-Network-Security-Testing-Framework.gitcd S800-Vehicle-Network-Security-Testing-Framework
# Install Python dependenciespip install -r requirements.txt
# Install system dependencies (Ubuntu/Debian)sudo apt-get updatesudo apt-get install can-utils python3-can

Hardware Setup

bash
# Load SocketCAN kernel modulessudo modprobe cansudo modprobe can_rawsudo modprobe vcan
# Setup virtual CAN interface (for testing without hardware)sudo ip link add dev vcan0 type vcansudo ip link set up vcan0
# Setup physical CAN interface (example with slcan)sudo slcand -o -c -s6 /dev/ttyUSB0 can0sudo ip link set up can0
# Set CAN bitrate (common automotive: 500kbps)sudo ip link set can0 type can bitrate 500000

Core Components

1. CAN Bus Analyzer

Capture and analyze CAN bus traffic:

python
from s800.can_analyzer import CANAnalyzerfrom s800.utils import setup_interface
# Initialize analyzeranalyzer = CANAnalyzer(interface='can0')
# Start capturing trafficanalyzer.start_capture(duration=60)  # Capture for 60 seconds
# Analyze captured framesstats = analyzer.get_statistics()print(f"Total frames: {stats['total_frames']}")print(f"Unique IDs: {stats['unique_ids']}")print(f"Average data rate: {stats['avg_rate']} frames/sec")
# Export captured dataanalyzer.export_pcap('capture.pcap')analyzer.export_csv('capture.csv')

2. Protocol Fuzzer

Fuzz CAN messages to discover vulnerabilities:

python
from s800.fuzzer import CANFuzzerfrom s800.payloads import PayloadGenerator
# Initialize fuzzerfuzzer = CANFuzzer(interface='can0')
# Define target CAN ID rangetarget_ids = range(0x100, 0x200)
# Generate mutation-based payloadspayload_gen = PayloadGenerator()payloads = payload_gen.generate_mutations(    base_data=[0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07],    mutation_rate=0.3,    count=1000)
# Run fuzzing campaignfuzzer.fuzz(    can_ids=target_ids,    payloads=payloads,    delay=0.01,  # 10ms between frames    monitor=True,  # Monitor for anomalies    callback=lambda result: print(f"Sent: {result}"))

3. ECU Identification

Identify and fingerprint ECUs on the network:

python
from s800.ecu_scanner import ECUScannerfrom s800.diagnostics import UDSClient
# Scan for active ECUsscanner = ECUScanner(interface='can0')ecus = scanner.scan_range(0x700, 0x7FF)
print(f"Found {len(ecus)} ECUs:")for ecu in ecus:    print(f"  ID: 0x{ecu['id']:03X}, Type: {ecu['type']}")
# Query ECU information via UDS (ISO 14229)uds = UDSClient(interface='can0', ecu_id=0x7E0)
# Read DID (Data Identifier)vin = uds.read_data_by_id(0xF190)  # VINprint(f"VIN: {vin.decode()}")
# Read diagnostic trouble codesdtcs = uds.read_dtc()print(f"Diagnostic Trouble Codes: {dtcs}")

4. Replay Attack

Record and replay CAN traffic:

python
from s800.replay import CANReplayimport time
# Record sessionrecorder = CANReplay(interface='can0')print("Recording traffic... Press Ctrl+C to stop")
try:    recorder.start_recording()    time.sleep(30)  # Record for 30 secondsexcept KeyboardInterrupt:    pass
recorder.stop_recording()recorder.save_session('door_unlock_sequence.s800')
# Replay recorded sessionreplayer = CANReplay(interface='can0')replayer.load_session('door_unlock_sequence.s800')
# Replay with original timingreplayer.replay(preserve_timing=True)
# Replay at faster speedreplayer.replay(speed_multiplier=2.0)
# Replay single frame repeatedlyreplayer.replay_frame(index=15, count=100, interval=0.05)

5. Man-in-the-Middle

Intercept and modify CAN traffic:

python
from s800.mitm import CANBridgefrom s800.filters import MessageFilter
# Create bridge between two CAN interfacesbridge = CANBridge(interface_a='can0', interface_b='can1')
# Define filtering rulesdef modify_speed(msg):    """Modify speed data (example: reduce displayed speed)"""    if msg.arbitration_id == 0x320:  # Speed message ID        # Modify byte 3-4 (speed value)        speed = int.from_bytes(msg.data[2:4], byteorder='big')        new_speed = int(speed * 0.8)  # Reduce by 20%        msg.data[2:4] = new_speed.to_bytes(2, byteorder='big')    return msg
# Add filterbridge.add_filter(modify_speed)
# Block specific messagesbridge.block_id(0x400)  # Block messages with ID 0x400
# Start bridgingbridge.start()

Configuration

Configuration File (config.yaml)

yaml
interfaces:  primary: can0  secondary: can1  virtual: vcan0
capture:  buffer_size: 10000  auto_save: true  output_dir: ./captures/
fuzzer:  default_delay: 0.01  max_iterations: 10000  crash_detection: true  anomaly_threshold: 5.0
scanner:  timeout: 1.0  retry_count: 3  id_range:    start: 0x000    end: 0x7FF
uds:  default_timeout: 2.0  session_type: extended  # default, extended, programming  security_access: false
logging:  level: INFO  file: s800.log  console: true

Load configuration:

python
from s800.config import Config
config = Config.load('config.yaml')analyzer = CANAnalyzer(    interface=config.interfaces['primary'],    buffer_size=config.capture['buffer_size'])

Advanced Usage

Custom Protocol Analysis

python
from s800.protocols import ProtocolDecoder
class CustomProtocolDecoder(ProtocolDecoder):    """Decode proprietary protocol"""        def decode(self, msg):        if msg.arbitration_id == 0x300:            return {                'type': 'sensor_data',                'temperature': msg.data[0] - 40,  # Offset by 40                'pressure': int.from_bytes(msg.data[1:3], 'big') / 10,                'status': msg.data[3]            }        return None
# Use custom decoderanalyzer = CANAnalyzer(interface='can0')analyzer.add_decoder(CustomProtocolDecoder())analyzer.start_capture()

Anomaly Detection

python
from s800.ml import AnomalyDetector
# Train baseline modeldetector = AnomalyDetector()detector.train_from_pcap('normal_traffic.pcap')
# Real-time anomaly detectionanalyzer = CANAnalyzer(interface='can0')
def check_anomaly(msg):    if detector.is_anomaly(msg):        print(f"ANOMALY DETECTED: ID=0x{msg.arbitration_id:03X}")        print(f"  Data: {msg.data.hex()}")        # Take action (log, alert, block, etc.)
analyzer.add_callback(check_anomaly)analyzer.start_capture()

Automated Security Assessment

python
from s800.assessment import SecurityAssessment
# Run comprehensive security assessmentassessment = SecurityAssessment(interface='can0')
results = assessment.run_all_tests(    tests=[        'ecu_discovery',        'uds_services',        'authentication_bypass',        'replay_protection',        'fuzzing_resilience'    ],    report_format='html')
assessment.save_report('security_report.html')print(f"Assessment complete. Score: {results['security_score']}/100")

CLI Commands

Basic Commands

bash
# Capture CAN trafficpython s800.py capture -i can0 -d 60 -o capture.pcap
# Scan for ECUspython s800.py scan -i can0 --range 0x700-0x7FF
# Fuzz CAN IDspython s800.py fuzz -i can0 --ids 0x100-0x200 --count 1000
# Replay trafficpython s800.py replay -i can0 -f capture.pcap --speed 1.0
# UDS diagnosticspython s800.py uds -i can0 --ecu 0x7E0 --read-vin
# Run security assessmentpython s800.py assess -i can0 --output report.html

Advanced Commands

bash
# MITM with filteringpython s800.py mitm -a can0 -b can1 --block 0x400 --modify speed_reducer.py
# Export analysispython s800.py analyze -f capture.pcap --export csv --stats
# Differential analysispython s800.py diff baseline.pcap test.pcap --threshold 0.05

Environment Variables

bash
# Default CAN interfaceexport S800_INTERFACE=can0
# Configuration file pathexport S800_CONFIG=/etc/s800/config.yaml
# Output directoryexport S800_OUTPUT_DIR=/var/log/s800/
# Debug modeexport S800_DEBUG=1
# API endpoint (if using remote analysis)export S800_API_URL=https://analysis.example.comexport S800_API_KEY=your_api_key_here

Common Patterns

Pattern 1: Pre-Test Baseline Capture

python
# Always capture baseline before testingbaseline = CANAnalyzer(interface='can0')baseline.start_capture(duration=300)  # 5 minutesbaseline.save('baseline.pcap')
# Run tests# ...
# Compare with baselinetest_capture = CANAnalyzer(interface='can0')test_capture.start_capture(duration=60)diff = test_capture.compare_with('baseline.pcap')print(f"New messages: {diff['new_ids']}")

Pattern 2: Safe Fuzzing

python
# Monitor system health during fuzzingfrom s800.monitoring import SystemMonitor
monitor = SystemMonitor(interface='can0')fuzzer = CANFuzzer(interface='can0')
monitor.add_safety_check('ecu_response', timeout=5.0)monitor.add_safety_check('error_frames', threshold=10)
fuzzer.set_safety_monitor(monitor)fuzzer.fuzz(can_ids=[0x100], payloads=payloads, emergency_stop=True)

Troubleshooting

CAN Interface Not Found

bash
# Check interface statusip link show can0
# Verify kernel moduleslsmod | grep can
# Check dmesg for errorsdmesg | grep can

Permission Denied

bash
# Add user to dialout group (for USB devices)sudo usermod -a -G dialout $USER
# Run with sudo (temporary)sudo python s800.py capture -i can0

No Traffic Received

python
# Verify bitrate matches vehiclesudo ip link set can0 type can bitrate 500000
# Check for bus-off statecandump can0 -e  # Show error frames
# Test with cansendcansend can0 123#DEADBEEF

High Bus Load

python
# Limit capture rateanalyzer = CANAnalyzer(interface='can0', filter_ids=[0x100, 0x200])
# Use hardware filtering if availableanalyzer.set_hardware_filter(mask=0x700, match=0x300)

Safety and Legal Warnings

  • Only test systems you own or have written authorization to test
  • Never test on public roads or active vehicles
  • Automotive systems control safety-critical functions
  • Improper testing can cause vehicle damage or safety hazards
  • Always have emergency stop procedures in place
  • Consult legal counsel before testing automotive systems

Resources

来源与署名

来源:reason-machines/security-skills位于skills/s800-vehicle-network-security-testing提交304c245

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