s800-vehicle-network-security-testing

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Original

English

🇨🇳

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Chinese

S800 Vehicle Network Security Testing Framework

S800 车载网络安全测试框架

Skill by ara.so — Security Skills collection.

由ara.so提供的技能——安全技能合集。

Overview

概述

S800 is a vehicle network security testing framework designed for automotive penetration testing, CAN bus analysis, and vulnerability assessment. The framework provides tools for analyzing in-vehicle networks, performing fuzzing operations, and identifying security weaknesses in automotive communication protocols.

Note: This is a test/research framework. Use only on authorized systems and test environments. Never use on production vehicles without explicit permission.

S800是一款专为汽车渗透测试、CAN总线分析和漏洞评估设计的车载网络安全测试框架。该框架提供了用于分析车载网络、执行模糊测试操作以及识别汽车通信协议中安全弱点的工具。

注意：这是一个测试/研究框架。仅可在授权系统和测试环境中使用。未经明确许可，绝不能在量产车辆上使用。

Installation

安装

Requirements

要求

Python 3.7+
CAN interface hardware (USB-to-CAN adapter, SocketCAN compatible device)
Root/administrator privileges for network interface access
Linux kernel with SocketCAN support (recommended)

Python 3.7+
CAN接口硬件（USB转CAN适配器、兼容SocketCAN的设备）
根/管理员权限（用于访问网络接口）
支持SocketCAN的Linux内核（推荐）

Setup

安装步骤

bash

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bash

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Clone the repository

克隆仓库

git clone https://github.com/zhu-zhu666/S800-Vehicle-Network-Security-Testing-Framework.git cd S800-Vehicle-Network-Security-Testing-Framework

Install dependencies

安装依赖

pip install -r requirements.txt

Install python-can for CAN bus communication

安装python-can用于CAN总线通信

pip install python-can

Set up SocketCAN interface (Linux)

设置SocketCAN接口（Linux）

sudo ip link set can0 type can bitrate 500000 sudo ip link set up can0

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sudo ip link set can0 type can bitrate 500000 sudo ip link set up can0

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Core Components

核心组件

1. CAN Bus Interface

1. CAN总线接口

The framework interfaces with vehicle CAN bus networks for traffic capture and injection.

python

import can

该框架与车载CAN总线网络对接，实现流量捕获与注入。

python

import can

Initialize CAN bus connection

初始化CAN总线连接

bus = can.interface.Bus(channel='can0', bustype='socketcan')

Read CAN messages

读取CAN消息

def read_can_traffic(duration=10): """Capture CAN bus traffic for specified duration""" messages = [] start_time = time.time()

while time.time() - start_time < duration:
    msg = bus.recv(timeout=1.0)
    if msg:
        messages.append({
            'timestamp': msg.timestamp,
            'arbitration_id': hex(msg.arbitration_id),
            'data': msg.data.hex(),
            'dlc': msg.dlc
        })

return messages

def read_can_traffic(duration=10): """捕获指定时长的CAN总线流量""" messages = [] start_time = time.time()

while time.time() - start_time < duration:
    msg = bus.recv(timeout=1.0)
    if msg:
        messages.append({
            'timestamp': msg.timestamp,
            'arbitration_id': hex(msg.arbitration_id),
            'data': msg.data.hex(),
            'dlc': msg.dlc
        })

return messages

Send CAN message

发送CAN消息

def send_can_message(arbitration_id, data): """Inject CAN message onto the bus""" msg = can.Message( arbitration_id=arbitration_id, data=bytes.fromhex(data), is_extended_id=False ) bus.send(msg) print(f"Sent: ID={hex(arbitration_id)}, Data={data}")

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def send_can_message(arbitration_id, data): """向总线注入CAN消息""" msg = can.Message( arbitration_id=arbitration_id, data=bytes.fromhex(data), is_extended_id=False ) bus.send(msg) print(f"已发送: ID={hex(arbitration_id)}, 数据={data}")

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2. Traffic Analysis

2. 流量分析

Analyze captured CAN traffic to identify patterns and anomalies.

python

from collections import Counter
import json

def analyze_can_traffic(messages):
    """Analyze CAN traffic for security assessment"""
    analysis = {
        'total_messages': len(messages),
        'unique_ids': set(),
        'id_frequency': Counter(),
        'data_patterns': {}
    }
    
    for msg in messages:
        arb_id = msg['arbitration_id']
        analysis['unique_ids'].add(arb_id)
        analysis['id_frequency'][arb_id] += 1
        
        # Track data patterns per ID
        if arb_id not in analysis['data_patterns']:
            analysis['data_patterns'][arb_id] = []
        analysis['data_patterns'][arb_id].append(msg['data'])
    
    # Convert set to list for JSON serialization
    analysis['unique_ids'] = list(analysis['unique_ids'])
    analysis['id_frequency'] = dict(analysis['id_frequency'])
    
    return analysis

def save_analysis(analysis, output_file='analysis.json'):
    """Save analysis results to file"""
    with open(output_file, 'w') as f:
        json.dump(analysis, f, indent=2)

分析捕获的CAN流量以识别模式和异常。

python

from collections import Counter
import json

def analyze_can_traffic(messages):
    """分析CAN流量以进行安全评估"""
    analysis = {
        'total_messages': len(messages),
        'unique_ids': set(),
        'id_frequency': Counter(),
        'data_patterns': {}
    }
    
    for msg in messages:
        arb_id = msg['arbitration_id']
        analysis['unique_ids'].add(arb_id)
        analysis['id_frequency'][arb_id] += 1
        
        # 按ID跟踪数据模式
        if arb_id not in analysis['data_patterns']:
            analysis['data_patterns'][arb_id] = []
        analysis['data_patterns'][arb_id].append(msg['data'])
    
    # 将集合转换为列表以支持JSON序列化
    analysis['unique_ids'] = list(analysis['unique_ids'])
    analysis['id_frequency'] = dict(analysis['id_frequency'])
    
    return analysis

def save_analysis(analysis, output_file='analysis.json'):
    """将分析结果保存到文件"""
    with open(output_file, 'w') as f:
        json.dump(analysis, f, indent=2)

3. Fuzzing Operations

3. 模糊测试操作

Perform fuzzing tests to identify vulnerabilities.

python

import random
import time

def fuzz_can_id(target_id, num_iterations=100, delay=0.1):
    """Fuzz a specific CAN ID with random data"""
    print(f"Starting fuzzing on CAN ID: {hex(target_id)}")
    
    for i in range(num_iterations):
        # Generate random 8-byte payload
        fuzz_data = bytes([random.randint(0, 255) for _ in range(8)])
        
        msg = can.Message(
            arbitration_id=target_id,
            data=fuzz_data,
            is_extended_id=False
        )
        
        try:
            bus.send(msg)
            print(f"[{i+1}/{num_iterations}] Sent: {fuzz_data.hex()}")
            time.sleep(delay)
        except Exception as e:
            print(f"Error sending message: {e}")

def intelligent_fuzz(target_id, baseline_data, mutations=50):
    """Perform mutation-based fuzzing on known data"""
    baseline = bytes.fromhex(baseline_data)
    
    for i in range(mutations):
        mutated = bytearray(baseline)
        # Mutate random byte
        byte_idx = random.randint(0, len(mutated) - 1)
        mutated[byte_idx] = random.randint(0, 255)
        
        msg = can.Message(
            arbitration_id=target_id,
            data=bytes(mutated),
            is_extended_id=False
        )
        
        bus.send(msg)
        time.sleep(0.05)

执行模糊测试以识别漏洞。

python

import random
import time

def fuzz_can_id(target_id, num_iterations=100, delay=0.1):
    """对特定CAN ID进行随机数据模糊测试"""
    print(f"开始对CAN ID进行模糊测试: {hex(target_id)}")
    
    for i in range(num_iterations):
        # 生成随机8字节负载
        fuzz_data = bytes([random.randint(0, 255) for _ in range(8)])
        
        msg = can.Message(
            arbitration_id=target_id,
            data=fuzz_data,
            is_extended_id=False
        )
        
        try:
            bus.send(msg)
            print(f"[{i+1}/{num_iterations}] 已发送: {fuzz_data.hex()}")
            time.sleep(delay)
        except Exception as e:
            print(f"发送消息出错: {e}")

def intelligent_fuzz(target_id, baseline_data, mutations=50):
    """对已知数据执行基于变异的模糊测试"""
    baseline = bytes.fromhex(baseline_data)
    
    for i in range(mutations):
        mutated = bytearray(baseline)
        # 变异随机字节
        byte_idx = random.randint(0, len(mutated) - 1)
        mutated[byte_idx] = random.randint(0, 255)
        
        msg = can.Message(
            arbitration_id=target_id,
            data=bytes(mutated),
            is_extended_id=False
        )
        
        bus.send(msg)
        time.sleep(0.05)

4. Replay Attacks

4. 重放攻击

Capture and replay CAN messages for security testing.

python

import pickle

def capture_session(output_file='session.pkl', duration=30):
    """Capture CAN session for replay"""
    print(f"Capturing session for {duration} seconds...")
    messages = []
    start_time = time.time()
    
    while time.time() - start_time < duration:
        msg = bus.recv(timeout=1.0)
        if msg:
            messages.append({
                'arbitration_id': msg.arbitration_id,
                'data': bytes(msg.data),
                'timestamp': msg.timestamp,
                'is_extended_id': msg.is_extended_id
            })
    
    with open(output_file, 'wb') as f:
        pickle.dump(messages, f)
    
    print(f"Captured {len(messages)} messages")
    return messages

def replay_session(input_file='session.pkl', speed_multiplier=1.0):
    """Replay captured CAN session"""
    with open(input_file, 'rb') as f:
        messages = pickle.load(f)
    
    print(f"Replaying {len(messages)} messages...")
    
    if not messages:
        return
    
    base_time = messages[0]['timestamp']
    start_time = time.time()
    
    for msg_data in messages:
        # Calculate timing
        original_delay = msg_data['timestamp'] - base_time
        target_time = start_time + (original_delay / speed_multiplier)
        
        # Wait until target time
        sleep_time = target_time - time.time()
        if sleep_time > 0:
            time.sleep(sleep_time)
        
        # Send message
        msg = can.Message(
            arbitration_id=msg_data['arbitration_id'],
            data=msg_data['data'],
            is_extended_id=msg_data['is_extended_id']
        )
        bus.send(msg)

捕获并重放CAN消息以进行安全测试。

python

import pickle

def capture_session(output_file='session.pkl', duration=30):
    """捕获CAN会话用于重放"""
    print(f"正在捕获会话，时长{duration}秒...")
    messages = []
    start_time = time.time()
    
    while time.time() - start_time < duration:
        msg = bus.recv(timeout=1.0)
        if msg:
            messages.append({
                'arbitration_id': msg.arbitration_id,
                'data': bytes(msg.data),
                'timestamp': msg.timestamp,
                'is_extended_id': msg.is_extended_id
            })
    
    with open(output_file, 'wb') as f:
        pickle.dump(messages, f)
    
    print(f"已捕获{len(messages)}条消息")
    return messages

def replay_session(input_file='session.pkl', speed_multiplier=1.0):
    """重放捕获的CAN会话"""
    with open(input_file, 'rb') as f:
        messages = pickle.load(f)
    
    print(f"正在重放{len(messages)}条消息...")
    
    if not messages:
        return
    
    base_time = messages[0]['timestamp']
    start_time = time.time()
    
    for msg_data in messages:
        # 计算时序
        original_delay = msg_data['timestamp'] - base_time
        target_time = start_time + (original_delay / speed_multiplier)
        
        # 等待至目标时间
        sleep_time = target_time - time.time()
        if sleep_time > 0:
            time.sleep(sleep_time)
        
        # 发送消息
        msg = can.Message(
            arbitration_id=msg_data['arbitration_id'],
            data=msg_data['data'],
            is_extended_id=msg_data['is_extended_id']
        )
        bus.send(msg)

Configuration

配置

Environment Variables

环境变量

bash

undefined

bash

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CAN interface configuration

CAN接口配置

export CAN_INTERFACE=can0 export CAN_BITRATE=500000

Logging configuration

日志配置

export S800_LOG_LEVEL=INFO export S800_LOG_FILE=/var/log/s800.log

Testing parameters

测试参数

export S800_FUZZ_ITERATIONS=1000 export S800_FUZZ_DELAY=0.1

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export S800_FUZZ_ITERATIONS=1000 export S800_FUZZ_DELAY=0.1

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Configuration File

配置文件

Create

config.json

for framework settings:

json

{
  "interface": {
    "channel": "can0",
    "bustype": "socketcan",
    "bitrate": 500000
  },
  "logging": {
    "level": "INFO",
    "file": "s800.log",
    "format": "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
  },
  "fuzzing": {
    "default_iterations": 100,
    "default_delay": 0.1,
    "target_ids": ["0x123", "0x456", "0x789"]
  },
  "analysis": {
    "output_dir": "./results",
    "save_pcap": true
  }
}

创建

config.json

用于框架设置：

json

{
  "interface": {
    "channel": "can0",
    "bustype": "socketcan",
    "bitrate": 500000
  },
  "logging": {
    "level": "INFO",
    "file": "s800.log",
    "format": "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
  },
  "fuzzing": {
    "default_iterations": 100,
    "default_delay": 0.1,
    "target_ids": ["0x123", "0x456", "0x789"]
  },
  "analysis": {
    "output_dir": "./results",
    "save_pcap": true
  }
}

Common Testing Patterns

常见测试模式

Full Security Assessment

全面安全评估

python

import os
from datetime import datetime

def run_security_assessment(target_ids, duration=60):
    """Perform comprehensive security assessment"""
    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
    output_dir = f"assessment_{timestamp}"
    os.makedirs(output_dir, exist_ok=True)
    
    # 1. Capture baseline traffic
    print("[1/4] Capturing baseline traffic...")
    baseline = read_can_traffic(duration=duration)
    with open(f"{output_dir}/baseline.json", 'w') as f:
        json.dump(baseline, f, indent=2)
    
    # 2. Analyze traffic
    print("[2/4] Analyzing traffic...")
    analysis = analyze_can_traffic(baseline)
    save_analysis(analysis, f"{output_dir}/analysis.json")
    
    # 3. Perform targeted fuzzing
    print("[3/4] Fuzzing target IDs...")
    for target_id in target_ids:
        fuzz_can_id(int(target_id, 16), num_iterations=50)
        time.sleep(2)
    
    # 4. Capture post-fuzz traffic
    print("[4/4] Capturing post-fuzz traffic...")
    post_fuzz = read_can_traffic(duration=30)
    with open(f"{output_dir}/post_fuzz.json", 'w') as f:
        json.dump(post_fuzz, f, indent=2)
    
    print(f"Assessment complete. Results in {output_dir}/")

python

import os
from datetime import datetime

def run_security_assessment(target_ids, duration=60):
    """执行全面安全评估"""
    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
    output_dir = f"assessment_{timestamp}"
    os.makedirs(output_dir, exist_ok=True)
    
    # 1. 捕获基准流量
    print("[1/4] 正在捕获基准流量...")
    baseline = read_can_traffic(duration=duration)
    with open(f"{output_dir}/baseline.json", 'w') as f:
        json.dump(baseline, f, indent=2)
    
    # 2. 分析流量
    print("[2/4] 正在分析流量...")
    analysis = analyze_can_traffic(baseline)
    save_analysis(analysis, f"{output_dir}/analysis.json")
    
    # 3. 执行定向模糊测试
    print("[3/4] 正在对目标ID进行模糊测试...")
    for target_id in target_ids:
        fuzz_can_id(int(target_id, 16), num_iterations=50)
        time.sleep(2)
    
    # 4. 捕获模糊测试后流量
    print("[4/4] 正在捕获模糊测试后流量...")
    post_fuzz = read_can_traffic(duration=30)
    with open(f"{output_dir}/post_fuzz.json", 'w') as f:
        json.dump(post_fuzz, f, indent=2)
    
    print(f"评估完成。结果保存在 {output_dir}/")

Monitor and Alert

监控与告警

python

def monitor_can_bus(alert_ids=None, callback=None):
    """Monitor CAN bus for specific IDs or anomalies"""
    alert_ids = alert_ids or []
    
    print("Starting CAN bus monitoring...")
    print(f"Alert IDs: {[hex(id) for id in alert_ids]}")
    
    while True:
        msg = bus.recv(timeout=1.0)
        if msg:
            if msg.arbitration_id in alert_ids:
                alert_msg = f"ALERT: Detected ID {hex(msg.arbitration_id)} - Data: {msg.data.hex()}"
                print(alert_msg)
                
                if callback:
                    callback(msg)

python

def monitor_can_bus(alert_ids=None, callback=None):
    """监控CAN总线以识别特定ID或异常"""
    alert_ids = alert_ids or []
    
    print("开始CAN总线监控...")
    print(f"告警ID: {[hex(id) for id in alert_ids]}")
    
    while True:
        msg = bus.recv(timeout=1.0)
        if msg:
            if msg.arbitration_id in alert_ids:
                alert_msg = f"告警: 检测到ID {hex(msg.arbitration_id)} - 数据: {msg.data.hex()}"
                print(alert_msg)
                
                if callback:
                    callback(msg)

Troubleshooting

故障排除

CAN Interface Not Found

CAN接口未找到

bash

undefined

bash

undefined

Check available interfaces

检查可用接口

ip link show

Verify SocketCAN module loaded

验证SocketCAN模块已加载

lsmod | grep can

Load modules if needed

若需要则加载模块

sudo modprobe can sudo modprobe can_raw sudo modprobe vcan

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sudo modprobe can sudo modprobe can_raw sudo modprobe vcan

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Permission Denied

权限拒绝

bash

undefined

bash

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Add user to dialout group (for USB-CAN adapters)

将用户添加到dialout组（适用于USB-CAN适配器）

sudo usermod -a -G dialout $USER

Or run with sudo (temporary)

或临时使用sudo运行

sudo python your_script.py

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sudo python your_script.py

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No Messages Received

未接收到消息

python

undefined

python

undefined

Verify CAN bus is active

验证CAN总线是否活跃

def test_can_connection(): """Test CAN interface connectivity""" try: bus = can.interface.Bus(channel='can0', bustype='socketcan') msg = bus.recv(timeout=5.0) if msg: print(f"Connection OK: Received message ID={hex(msg.arbitration_id)}") return True else: print("No messages received - check vehicle connection") return False except Exception as e: print(f"Connection failed: {e}") return False

undefined

def test_can_connection(): """测试CAN接口连接性""" try: bus = can.interface.Bus(channel='can0', bustype='socketcan') msg = bus.recv(timeout=5.0) if msg: print(f"连接正常: 收到消息ID={hex(msg.arbitration_id)}") return True else: print("未收到消息 - 检查车辆连接") return False except Exception as e: print(f"连接失败: {e}") return False

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Bitrate Mismatch

比特率不匹配

Common CAN bus bitrates:

Low-speed CAN: 125 kbps
High-speed CAN: 500 kbps
CAN-FD: 1-5 Mbps

bash

undefined

常见CAN总线比特率：

低速CAN: 125 kbps
高速CAN: 500 kbps
CAN-FD: 1-5 Mbps

bash

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Try different bitrates

尝试不同比特率

sudo ip link set can0 type can bitrate 125000 sudo ip link set can0 type can bitrate 250000 sudo ip link set can0 type can bitrate 500000

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sudo ip link set can0 type can bitrate 125000 sudo ip link set can0 type can bitrate 250000 sudo ip link set can0 type can bitrate 500000

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Safety and Legal Considerations

安全与法律注意事项

Authorization Required: Only test on vehicles you own or have explicit permission to test
Safety Critical: Vehicle networks control safety systems - unauthorized testing can cause harm
Backup Systems: Ensure vehicle can be safely recovered if testing causes issues
Isolated Testing: Use dedicated test benches when possible
Log Everything: Maintain detailed logs of all testing activities
Emergency Stop: Have a kill switch or emergency procedure ready

需获得授权：仅可在您拥有或明确获得测试许可的车辆上进行测试
安全关键：车载网络控制安全系统——未经授权的测试可能造成伤害
备份系统：确保在测试导致问题时，车辆可安全恢复
隔离测试：尽可能使用专用测试台
记录所有操作：保留所有测试活动的详细日志
紧急停止：准备好急停开关或应急流程