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

Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit Auto commit