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Port Scanning and automated Brute Force Tool

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Brutespray is a python script which provides a combination of both port scanning and automated brute force attacks against scanned services.

Scan with Nmap and use GNMAP/XML output file to Brute force Nmap open port services with default credentials using Medusa or Use your dictionary to gain access. Download the brutespray Tool Here.

Attackers Machine(Kali Linux 2.0)

  • Execute command  ./brutespray.py python script with 777 Permissions ( read,write,execute)

Scanning victim website

  • Start scanning your victim website or internal network with Nmap to check open ports and services.
  • Below Image illustrate Nmap scan followed by saving the output of nmap results with a filename.
  • Command executed: nmap –vv -n -oA Outputfilename
  • Here -oA is Output in all formats(.xml,.gnmap,nmap)

Nmap Output Mode

  • Previous Nmap scan will be saved in the .xml format as an output file.
  • This Output file (XML FILE) used to perform brute force attacks against open ports of the victim.
  • Below image illustrate Nmap scan output file as bala.nmap 

Brutespray Startup

  • Now you can run this tool with a command: ./brutespray.py -h will run the tool with help mode.

Brutespray Interactive Mode

  • Launch Interactive mode with the command: python brutespray.py -f nmap.xml -i
  • Once Interactive mode loaded, set your service, threads, hosts and finally dictionary file.
brute force
  • Automate your Bruteforce attack with In build dictionary or use your own dictionary with Interactive Mode.
  • The Brutespray started its attack, relax yourself lets wait for successful username and password from a dictionary file.

Brute Force Username & Password

  • Once the attack is success username and password will be saved in the brutespray-output folder as output.

Mitigation

  • Always recommended to use a strong password as per policy.
  • Password changing policy should be 15 to 30 days will be a good practice.
  • Password lockout policy is a good one to stop brute force attacks (After 5 failure attempts account will be locked).
  • The integration of business-critical asset to SIEM( security incident & Event Management) will detect these kinds of attacks as soon as possible.

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