Class: Yawast::Scanner::Generic

Inherits:
Object
  • Object
show all
Defined in:
lib/scanner/generic.rb

Class Method Summary collapse

Class Method Details

.check_options(uri) ⇒ Object 



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# File 'lib/scanner/generic.rb', line 254

def self.check_options(uri)
  begin
    req = Yawast::Shared::Http.get_http(uri)
    req.use_ssl = uri.scheme == 'https'
    headers = Yawast::Shared::Http.get_headers
    res = req.request(Options.new('/', headers))

    if res['Public'] != nil
      Yawast::Utilities.puts_info "Public HTTP Verbs (OPTIONS): #{res['Public']}"

      puts ''
    end
  end
end

.check_propfind(uri) ⇒ Object 



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# File 'lib/scanner/generic.rb', line 285

def self.check_propfind(uri)
  begin
    req = Yawast::Shared::Http.get_http(uri)
    req.use_ssl = uri.scheme == 'https'
    headers = Yawast::Shared::Http.get_headers
    res = req.request(Propfind.new('/', headers))

    if res.code.to_i <= 400 && res.body.length > 0 && res['Content-Type'] == 'text/xml'
      Yawast::Utilities.puts_warn 'Possible Info Disclosure: PROPFIND Enabled'
      puts "\t\t\"curl -X PROPFIND #{uri}\""

      puts ''
    end
  end
end

.check_trace(uri) ⇒ Object 



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# File 'lib/scanner/generic.rb', line 269

def self.check_trace(uri)
  begin
    req = Yawast::Shared::Http.get_http(uri)
    req.use_ssl = uri.scheme == 'https'
    headers = Yawast::Shared::Http.get_headers
    res = req.request(Trace.new('/', headers))

    if res.body.include? 'TRACE / HTTP/1.1'
      Yawast::Utilities.puts_warn 'HTTP TRACE Enabled'
      puts "\t\t\"curl -X TRACE #{uri}\""

      puts ''
    end
  end
end

.directory_search(uri, recursive, banner = true) ⇒ Object 



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# File 'lib/scanner/generic.rb', line 215

def self.directory_search(uri, recursive, banner = true)
  if banner
    if recursive
      puts 'Recursively searching for common directories (this will take a while)...'
    else
      puts 'Searching for common directories...'
    end
  end

  begin
    req = Yawast::Shared::Http.get_http(uri)
    req.use_ssl = uri.scheme == 'https'
    req.keep_alive_timeout = 600
    headers = Yawast::Shared::Http.get_headers

    req.start do |http|
      File.open(File.dirname(__FILE__) + '/../resources/common.txt', "r") do |f|
        f.each_line do |line|
          check = uri.copy
          check.path = check.path + "#{line.strip}/"

          res = http.head(check, headers)

          if res.code == '200'
            Yawast::Utilities.puts_info "\tFound: '#{check.to_s}'"
            directory_search check, recursive, false if recursive
          elsif res.code == '301'
            Yawast::Utilities.puts_info "\tFound Redirect: '#{check.to_s} -> '#{res['Location']}'"
          end
        end
      end
    end
  rescue => e
    Yawast::Utilities.puts_error "Error searching for directories (#{e.message})"
  end

  puts '' if banner
end

.head_info(head) ⇒ Object 



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# File 'lib/scanner/generic.rb', line 82

def self.head_info(head)
  begin
    server = ''
    powered_by = ''
    cookies = Array.new
    pingback = ''
    frame_options = ''
    content_options = ''
    csp = ''
    backend_server = ''
    runtime = ''
    xss_protection = ''
    via = ''
    hpkp = ''

    Yawast::Utilities.puts_info 'HEAD:'
    head.each do |k, v|
      Yawast::Utilities.puts_info "\t\t#{k}: #{v}"

      server = v if k.downcase == 'server'
      powered_by = v if k.downcase == 'x-powered-by'
      pingback = v if k.downcase == 'x-pingback'
      frame_options = v if k.downcase == 'x-frame-options'
      content_options = v if k.downcase == 'x-content-type-options'
      csp = v if k.downcase == 'content-security-policy'
      backend_server = v if k.downcase == 'x-backend-server'
      runtime = v if k.downcase == 'x-runtime'
      xss_protection = v if k.downcase == 'x-xss-protection'
      via = v if k.downcase == 'via'
      hpkp = v if k.downcase == 'public-key-pins'

      if k.downcase == 'set-cookie'
        #this chunk of magic manages to properly split cookies, when multiple are sent together
        v.gsub(/(,([^;,]*=)|,$)/) { "\r\n#{$2}" }.split(/\r\n/).each { |c| cookies.push(c) }
      end
    end
    puts ''

    if server != ''
      Yawast::Scanner::Apache.check_banner(server)
      Yawast::Scanner::Php.check_banner(server)
      Yawast::Scanner::Iis.check_banner(server)
      Yawast::Scanner::Nginx.check_banner(server)

      if server == 'cloudflare-nginx'
        Yawast::Utilities.puts_info 'NOTE: Server appears to be Cloudflare; WAF may be in place.'
        puts
      end
    end

    if powered_by != ''
      Yawast::Utilities.puts_warn "X-Powered-By Header Present: #{powered_by}"
    end

    if xss_protection == '0'
      Yawast::Utilities.puts_warn 'X-XSS-Protection Disabled Header Present'
    end

    unless pingback == ''
      Yawast::Utilities.puts_info "X-Pingback Header Present: #{pingback}"
    end

    unless runtime == ''
      if runtime.is_number?
        Yawast::Utilities.puts_warn 'X-Runtime Header Present; likely indicates a RoR application'
      else
        Yawast::Utilities.puts_warn "X-Runtime Header Present: #{runtime}"
      end
    end

    unless backend_server == ''
      Yawast::Utilities.puts_warn "X-Backend-Server Header Present: #{backend_server}"
    end

    unless via == ''
      Yawast::Utilities.puts_warn "Via Header Present: #{via}"
    end

    if frame_options == ''
      Yawast::Utilities.puts_warn 'X-Frame-Options Header Not Present'
    else
      if frame_options.downcase == 'allow'
        Yawast::Utilities.puts_vuln "X-Frame-Options Header: #{frame_options}"
      else
        Yawast::Utilities.puts_info "X-Frame-Options Header: #{frame_options}"
      end
    end

    if content_options == ''
      Yawast::Utilities.puts_warn 'X-Content-Type-Options Header Not Present'
    else
      Yawast::Utilities.puts_info "X-Content-Type-Options Header: #{content_options}"
    end

    if csp == ''
      Yawast::Utilities.puts_warn 'Content-Security-Policy Header Not Present'
    end

    if hpkp == ''
      Yawast::Utilities.puts_warn 'Public-Key-Pins Header Not Present'
    end

    puts ''

    unless cookies.empty?
      Yawast::Utilities.puts_info 'Cookies:'

      cookies.each do |val|
        Yawast::Utilities.puts_info "\t\t#{val.strip}"

        elements = val.strip.split(';')

        #check for secure cookies
        unless elements.include? ' Secure'
          Yawast::Utilities.puts_warn "\t\t\tCookie missing Secure flag"
        end

        #check for HttpOnly cookies
        unless elements.include? ' HttpOnly'
          Yawast::Utilities.puts_warn "\t\t\tCookie missing HttpOnly flag"
        end
      end

      puts ''
    end

    puts ''
  rescue => e
    Yawast::Utilities.puts_error "Error getting head information: #{e.message}"
    raise
  end
end

.server_info(uri, options) ⇒ Object 



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# File 'lib/scanner/generic.rb', line 6

def self.server_info(uri, options)
  begin
    puts 'DNS Information:'

    dns = Resolv::DNS.new
    Resolv::DNS.open do |resv|
      a = resv.getresources(uri.host, Resolv::DNS::Resource::IN::A)
      unless a.empty?
        a.each do |ip|
          begin
            host_name = dns.getname(ip.address)
          rescue
            host_name = 'N/A'
          end

          Yawast::Utilities.puts_info "\t\t#{ip.address} (#{host_name})"

          # if address is private, force internal SSL mode, don't show links
          if IPAddr.new(ip.address.to_s, Socket::AF_INET).private?
            options.internalssl = true
          else
            puts "\t\t\t\thttps://www.shodan.io/host/#{ip.address}"
            puts "\t\t\t\thttps://censys.io/ipv4/#{ip.address}"
          end
        end
      end

      aaaa = resv.getresources(uri.host, Resolv::DNS::Resource::IN::AAAA)
      unless aaaa.empty?
        aaaa.each do |ip|
          begin
            host_name = dns.getname(ip.address)
          rescue
            host_name = 'N/A'
          end

          Yawast::Utilities.puts_info "\t\t#{ip.address} (#{host_name})"

          # if address is private, force internal SSL mode, don't show links
          if IPAddr.new(ip.address.to_s, Socket::AF_INET6).private?
            options.internalssl = true
          else
            puts "\t\t\t\thttps://www.shodan.io/host/#{ip.address.to_s.downcase}"
          end
        end
      end

      txt = resv.getresources(uri.host, Resolv::DNS::Resource::IN::TXT)
      unless txt.empty?
        txt.each do |rec|
          Yawast::Utilities.puts_info "\t\tTXT: #{rec.data}"
        end
      end

      mx = resv.getresources(uri.host, Resolv::DNS::Resource::IN::MX)
      unless mx.empty?
        mx.each do |rec|
          Yawast::Utilities.puts_info "\t\tMX: #{rec.exchange} (#{rec.preference})"
        end
      end

      ns = resv.getresources(uri.host, Resolv::DNS::Resource::IN::NS)
      unless ns.empty?
        ns.each do |rec|
          Yawast::Utilities.puts_info "\t\tNS: #{rec.name}"
        end
      end
    end

    puts
  rescue => e
    Yawast::Utilities.puts_error "Error getting basic information: #{e.message}"
    raise
  end
end