Class: Dorothy::DorothyFetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/dorothy2/BFM.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source_arr) ⇒ DorothyFetcher

Source_arr is an array e.g.: [“webgui”, “localdir”=>“/Users/akira/Downloads/doroth2_1.9.3_mail/opt/bins/webgui”, “typeid”=>1]



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# File 'lib/dorothy2/BFM.rb', line 23

def initialize(source_arr)
  ndownloaded = 0

  @added = Hash.new
  source = source_arr[1]      #source_arr[1] is a hash

  source["priority"] ||= 0
  source["profile"] ||= "default"


  case source["type"]

    when "ssh" then
      #file = "/opt/dionaea/var/dionaea/binaries/"
      #puts "Start to download malware"

      files = []

      begin
        Net::SSH.start(source["ip"], source["username"], :password => source["pass"], :port => source["port"]) do |ssh|
          ssh.scp.download!(source["remotedir"],source["localdir"], :recursive => true) do |ch, name, sent, total|
            unless files.include? "#{source["localdir"]}/" + File.basename(name)
              ndownloaded += 1
              files.push "#{source["localdir"]}/" + File.basename(name)
            end
            #		print "#{File.basename(name)}: #{sent}/#{total}\r"
            #		$stdout.flush
          end
          LOGGER.info "BFM", "#{ndownloaded} files downloaded"
        end

      rescue => e
        LOGGER.error "BFM", "An error occurred while downloading malwares from honeypot sensor: " + $!
        LOGGER.error "BFM", "Error: #{$!}, #{e.inspect}, #{e.backtrace}"
      end

      #DIRTY WORKAROUND for scp-ing only files without directory
      FileUtils.mv(Dir.glob(source["localdir"] + "/binaries/*"), source["localdir"])
      Dir.rmdir(source["localdir"] + "/binaries")


      begin
        unless DoroSettings.env[:testmode]
          Net::SSH.start(source["host"], source["user"], :password => source["pass"], :port => source["port"]) do |ssh|
            ssh.exec "mv #{source["remotedir"]}/* #{source["remotedir"]}/../analyzed "
          end
        end
      rescue
        LOGGER.error "BFM", "An error occurred while erasing parsed malwares in the honeypot sensor: " + $!
      end

      files.each do |f|
        begin
          @added = QueueManager.add(f, source_arr[0], source["profile"], source["priority"])
        rescue
          LOGGER.error "BFM", "Error while adding the bin to the queue, skipping."
          LOGGER.debug "BFM", $!
          next
        end
      end


    #Thanks to Salvatore Gervino who made the first PoC of this source-module: http://www.honeynet.it/wp-content/uploads/Mentored_Projects/salvatore_gervino-dorothy2_email.pdf
    when "mail" then

      @db = Insertdb.new

       = {:address=>source["host"],  :username=>source["username"],
                 :password=>source["password"], :port=>source["port"], :ssl=>source["enable_ssl"], :n_emails => source["n_emails"] , :delete_once_downloaded => source["delete_once_downloaded"]}


      mailer = Dorothy::Mailer.new()
      begin
        emails = mailer.get_emails

        emails.each do |email|

          LOGGER.debug "BFM", "Analyzing email: #{email.date} - #{email.from_addrs[0]} - #{email.subject} - #{email.to_addrs[0]}"


          unless email.attachments.empty?
            mail_id = @db.push_email_data(email)

            attachment_content_type = Mail::ContentTypeElement.new(email.attachments.first.content_type)
            #if the attachment is a forwarded email, treat the attachment as the original email
            if attachment_content_type.main_type == 'message'

              LOGGER.info "BFM", "Forwarded email from #{email.from.first} found"
              email = mailer.read_from_string email.attachments.first.body.decoded
              mail_id = @db.push_email_data(email, mail_id)

            end


            email.attachments.each do | attachment |
              LOGGER.info "BFM", "Attachment found: #{attachment.filename} "
              bin = source["localdir"] + "/" + Digest::MD5.hexdigest(attachment.body.decoded) + "_" + attachment.filename
              Util.write( bin, attachment.body.decoded)
              id = QueueManager.add(bin, source_arr[0],source["profile"], source["priority"], mail_id)
              @added.store(id,[bin, source["priority"], source["profile"], source_arr[0]])
            end
          end

        end  #end for
        @db.close
        LOGGER.debug "BFM", "Analyzing email: End "
      rescue => e
        LOGGER.error "BFM", "Error while adding the bin to the queue, skipping. #{$!}"
        LOGGER.debug "DB", e.backtrace
      end

    when "system" then
      empty = true
      Dir.foreach(source["localdir"]) do |file|
        bin = source["localdir"] + "/" + file
        next if File.directory?(bin)

        begin
          id = QueueManager.add(bin, source_arr[0], source["profile"], source["priority"])
          empty = false
          @added.store(id,[bin, source["priority"], source["profile"], source_arr[0]])

        rescue
          LOGGER.error "BFM", "Error while adding the bin to the queue, skipping."
          LOGGER.debug "BFM", $!
          next
        end

      end
      LOGGER.debug "BFM", "No binaries were found in the selected source" if empty
    else
      LOGGER.fatal "BFM", "Source type #{source["type"]} is not yet configured"
  end
end

Instance Attribute Details

#added ⇒ Object (readonly)

Returns the value of attribute added.



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# File 'lib/dorothy2/BFM.rb', line 20

def added
  @added
end

Class Method Details

.loader(sources, daemon = false) ⇒ Object

Expects an Hash as input



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# File 'lib/dorothy2/BFM.rb', line 159

def self.loader(sources, daemon=false)

  infinite = true


  begin
    while infinite  #infinite loop
      sources.each do |sname|
        #skip if it is webgui
        next if sname.first == 'webgui'

        LOGGER.debug "BFM", "Start to fetch binaries from #{sname.first.yellow} @ #{sname[1]["localdir"]}"

        added = self.new(sname).added
        LOGGER.info "BFM", "#{added.size.to_s.yellow} binaries retreived from #{sname.first.yellow}"

        added.each do |b|
          LOGGER.debug "BFM", "#{b[0]}\t#{File.basename(b[1][0])}\t#{b[1][3]}"
        end

      end
      if daemon
        LOGGER.info "BFM", "SLEEPING 10"
        sleep DoroSettings.bfm[:sleeptime].to_i
      end
      infinite = daemon
    end

  rescue SignalException #, RuntimeError
    LOGGER.warn "BFM", "SIGINT".red + " Catched [1], exiting gracefully."
  end
end