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README.md

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MikroTik SMB Remote Denial of Service (DoS)

The Server Message Block (SMB) protocol was introduced by Microsoft and reimplemented by multiple vendors in order to maintain file exchange compatibility to Windows systems and services. The protocol in general is used for file exchange between Windows systems.

using

please rebuild the used test environment provided in this repo.

  1. Download and start the RouterOs environment.

    Please execute the following script on a fresh installed version of Ubuntu 18.04, since the script will install all required software. The script ends by providing the IP of the RouterOs VM.

    sudo ./setupMikroTikEnvironment.sh

  2. Enable SMB on RouterOs

    Run the following commands to activate the SMB service.

    telnet <RouterOs IP>
(user: admin, <no password>)
ip smb set enabled=yes
ip smb print

    The service can be checked manually from the host system with the following command and should respond wiht Anonymous login successful as long the service is running.

    smbclient -N -L \\\\<RouterOs IP>

  3. The denial of service attack

    The python3 script `testing.py` validates the availability of the SMB service before and after the
exploitation process. A successful execution will end up with the unavailability of the SMB service.
Please execute the script as shown below.

```python
python3 testing.py --ip <RouterOs Ip>
```

Testing the SMB service with the following command will fail.

```bash
smbclient -N -L \\\\<RouterOs IP>
```

  4. Remove VM

    In order to remove the VM just run the script again.

    sudo ./setupMikroTikEnvironment.sh

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