Class: Arachni::Plugins::WAFDetector
- Inherits:
-
Arachni::Plugin::Base
- Object
- Component::Base
- Arachni::Plugin::Base
- Arachni::Plugins::WAFDetector
- Defined in:
- components/plugins/waf_detector.rb
Overview
Web Application Firewall detection plugin.
This is a 4 stage process:
- Grab the original page as is
- Send a lot of innocent strings in non-existent inputs so as to profile normal behavior
- Send a lot of suspicious strings in non-existent inputs and check if behavior changes
- Make heads or tails of the gathered responses
Steps 1 to 3 will be repeated precision times and the responses will be averaged using rDiff analysis.
Constant Summary collapse
- STATUSES =
{ inconclusive: %q{Could not establish a baseline behavior for the website. Due to that fact analysis has been aborted.}, found: %q{Request parameters are being filtered, this is usually a sign of a WAF.}, not_found: %q{Could not detect any sign of filtering, a WAF doesn't seem to be present.} }
Constants included from Arachni
BANNER, Cookie, Form, Header, JSON, Link, LinkTemplate, NestedCookie, Severity, UIForm, UIInput, VERSION, WEBSITE, WIKI, XML
Instance Attribute Summary
Attributes inherited from Arachni::Plugin::Base
Class Method Summary collapse
Instance Method Summary collapse
- #clean_up ⇒ Object
- #found ⇒ Object
- #inconclusive ⇒ Object
- #log(status) ⇒ Object
- #not_found ⇒ Object
- #prepare ⇒ Object
- #queue_original ⇒ Object
- #queue_spicy ⇒ Object
- #queue_vanilla ⇒ Object
- #run ⇒ Object
Methods inherited from Arachni::Plugin::Base
#browser_cluster, distributable, distributable?, #framework_abort, #framework_pause, #framework_resume, gems, #http, #info, #initialize, is_distributable, merge, #register_results, #restore, #session, #suspend, #wait_while_framework_running, #with_browser
Methods inherited from Component::Base
author, description, fullname, #shortname, shortname, shortname=, version
Methods included from Component::Output
#depersonalize_output, #depersonalize_output?, #intercept_print_message
Methods included from UI::Output
#caller_location, #debug?, #debug_level, #debug_level_1?, #debug_level_2?, #debug_level_3?, #debug_level_4?, #debug_off, #debug_on, #disable_only_positives, #error_buffer, #error_log_fd, #error_logfile, #has_error_log?, #included, #log_error, #mute, #muted?, #only_positives, #only_positives?, #print_bad, #print_debug, #print_debug_backtrace, #print_debug_exception, #print_debug_level_1, #print_debug_level_2, #print_debug_level_3, #print_debug_level_4, #print_error, #print_error_backtrace, #print_exception, #print_info, #print_line, #print_ok, #print_status, #print_verbose, #reroute_to_file, #reroute_to_file?, reset_output_options, #set_error_logfile, #unmute, #verbose?, #verbose_off, #verbose_on
Methods included from Component::Utilities
Methods included from Utilities
#available_port, available_port_mutex, #bytes_to_kilobytes, #bytes_to_megabytes, #caller_name, #caller_path, #cookie_decode, #cookie_encode, #cookies_from_file, #cookies_from_parser, #cookies_from_response, #exception_jail, #exclude_path?, #follow_protocol?, #form_decode, #form_encode, #forms_from_parser, #forms_from_response, #full_and_absolute_url?, #generate_token, #get_path, #hms_to_seconds, #html_decode, #html_encode, #include_path?, #links_from_parser, #links_from_response, #normalize_url, #page_from_response, #page_from_url, #parse_set_cookie, #path_in_domain?, #path_too_deep?, #port_available?, #rand_port, #random_seed, #redundant_path?, #regexp_array_match, #remove_constants, #request_parse_body, #seconds_to_hms, #skip_page?, #skip_path?, #skip_resource?, #skip_response?, #to_absolute, #uri_decode, #uri_encode, #uri_parse, #uri_parse_query, #uri_parser, #uri_rewrite
Methods included from Arachni
URI, collect_young_objects, #get_long_win32_filename, jruby?, null_device, profile?, windows?
Constructor Details
This class inherits a constructor from Arachni::Plugin::Base
Class Method Details
.info ⇒ Object
139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 |
# File 'components/plugins/waf_detector.rb', line 139 def self.info { name: 'WAF Detector', description: %q{ Performs basic profiling on the web application in order to assess the existence of a Web Application Firewall. This is a 4 stage process: 1. Grab the original page as is. 2. Send a lot of innocent (vanilla) strings in non-existent inputs so as to profile normal behavior. 3. Send a lot of suspicious (spicy) strings in non-existent inputs and check if behavior changes. 4. Make heads or tails of the gathered responses. Steps 1 to 3 will be repeated _precision_ times (default: 5) and the responses will be averaged using rDiff analysis. }, author: 'Tasos "Zapotek" Laskos <[email protected]>', version: '0.1.3', options: [ Options::Int.new( :precision, description: 'Stage precision (how many times to perform each detection stage).', default: 5 ) ] } end |
Instance Method Details
#clean_up ⇒ Object
91 92 93 |
# File 'components/plugins/waf_detector.rb', line 91 def clean_up framework_resume end |
#found ⇒ Object
95 96 97 |
# File 'components/plugins/waf_detector.rb', line 95 def found log :found end |
#inconclusive ⇒ Object
103 104 105 |
# File 'components/plugins/waf_detector.rb', line 103 def inconclusive log :inconclusive end |
#log(status) ⇒ Object
107 108 109 110 |
# File 'components/plugins/waf_detector.rb', line 107 def log( status ) print_ok STATUSES[status] register_results( 'status' => status.to_s, 'message' => STATUSES[status] ) end |
#not_found ⇒ Object
99 100 101 |
# File 'components/plugins/waf_detector.rb', line 99 def not_found log :not_found end |
#prepare ⇒ Object
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 |
# File 'components/plugins/waf_detector.rb', line 30 def prepare @precision = [:precision] bad = [ '../../../../', '<script>foo</script>', '\'--;`', ] names = [] bad.size.times do |i| names << i.to_s + '_' + Digest::SHA2.hexdigest( rand( i * 1000 ).to_s ) end @safe = { } @unsafe = { } names.each.with_index do |name, i| @safe[name] = 'value_' + name @unsafe[name] = i.to_s + '_' + bad.join( '_' ) end @url = framework..url @responses = { original: nil, vanilla: nil, spicy: nil } framework_pause end |
#queue_original ⇒ Object
112 113 114 115 116 117 118 119 |
# File 'components/plugins/waf_detector.rb', line 112 def queue_original @precision.times do http.get( @url.to_s ) do |res| @responses[:original] ||= res.body @responses[:original] = @responses[:original].rdiff( res.body ) end end end |
#queue_spicy ⇒ Object
130 131 132 133 134 135 136 137 |
# File 'components/plugins/waf_detector.rb', line 130 def queue_spicy @precision.times do http.get( @url.to_s, parameters: @unsafe ) do |res| @responses[:spicy] ||= res.body @responses[:spicy] = @responses[:spicy].rdiff( res.body ) end end end |
#queue_vanilla ⇒ Object
121 122 123 124 125 126 127 128 |
# File 'components/plugins/waf_detector.rb', line 121 def queue_vanilla @precision.times do http.get( @url.to_s, parameters: @safe ) do |res| @responses[:vanilla] ||= res.body @responses[:vanilla] = @responses[:vanilla].rdiff( res.body ) end end end |
#run ⇒ Object
62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 |
# File 'components/plugins/waf_detector.rb', line 62 def run print_status "Starting detection with a precision of #{@precision}." print_status 'Stage #1: Requesting original page.' queue_original print_status 'Stage #2: Requesting with vanilla inputs.' queue_vanilla print_status 'Stage #3: Requesting with spicy inputs.' queue_spicy print_status 'Stage #4: Analyzing gathered responses.' http.after_run do if @responses[:original] == @responses[:vanilla] if @responses[:vanilla] == @responses[:spicy] not_found else found end else inconclusive end end http.run end |