Class: Arachni::Checks::Backdoors
- Inherits:
-
Arachni::Check::Base
- Object
- Arachni::Component::Base
- Arachni::Check::Base
- Arachni::Checks::Backdoors
- Defined in:
- components/checks/passive/backdoors.rb
Overview
Looks for common backdoors on the server.
Constant Summary
Constants included from Arachni::Check::Auditor
Arachni::Check::Auditor::DOM_ELEMENTS_WITH_INPUTS, Arachni::Check::Auditor::ELEMENTS_WITH_INPUTS, Arachni::Check::Auditor::FILE_SIGNATURES, Arachni::Check::Auditor::FILE_SIGNATURES_PER_PLATFORM, Arachni::Check::Auditor::Format, Arachni::Check::Auditor::SOURCE_CODE_SIGNATURES_PER_PLATFORM
Constants included from Arachni
BANNER, Arachni::Cookie, Form, Header, JSON, Link, LinkTemplate, NestedCookie, Severity, UIForm, UIInput, VERSION, WEBSITE, WIKI, XML
Instance Attribute Summary
Attributes included from Arachni::Check::Auditor
Class Method Summary collapse
Instance Method Summary collapse
Methods inherited from Arachni::Check::Base
#browser_cluster, #clean_up, elements, exempt_platforms, has_exempt_platforms?, has_platforms?, #initialize, platforms, #plugins, prefer, #preferred, preferred, #prepare, #session, supports_platforms?
Methods included from Arachni::Check::Auditor
#audit, #audit_differential, #audit_signature, #audit_timeout, #audited, #audited?, #buffered_audit, #each_candidate_dom_element, #each_candidate_element, has_timeout_candidates?, #http, #initialize, #log, #log_issue, #log_remote_file, #log_remote_file_if_exists, #match_and_log, #max_issues, #preferred, reset, #skip?, timeout_audit_run, #trace_taint, #with_browser, #with_browser_cluster
Methods inherited from Arachni::Component::Base
author, description, fullname, #shortname, shortname, shortname=, version
Methods included from Arachni::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 Arachni::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::Check::Base
Class Method Details
.filenames ⇒ Object
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# File 'components/checks/passive/backdoors.rb', line 14 def self.filenames @filenames ||= read_file( 'filenames.txt' ) end |
.info ⇒ Object
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# File 'components/checks/passive/backdoors.rb', line 28 def self.info { name: 'Backdoors', description: %q{Tries to find common backdoors on the server.}, elements: [Element::Server], author: 'Tasos "Zapotek" Laskos <[email protected]> ', version: '0.2.6', exempt_platforms: Arachni::Platform::Manager::FRAMEWORKS, issue: { name: %q{A backdoor file exists on the server}, description: %q{ If a server has been previously compromised, there is a high probability that the cyber-criminal has installed a backdoor so that they can easily return to the server if required. One method of achieving this is to place a web backdoor or web shell within the web root of the web server. This will then enable the cyber-criminal to access the server through a HTTP/S session. Although extremely bad practice, it is possible that the web backdoor or web shell has been placed there by an administrator so they can perform administrative activities remotely. During the initial recon stages of an attack, cyber-criminals will attempt to locate these web backdoors or shells by requesting the names of the most common and well known ones. By analysing the response, they are able to determine if a web backdoor or web shell exists. These web backdoors or web shells can then provide an easy path for further compromise of the server. By utilising the same methods as the cyber-criminals, Arachni was able to discover a possible web backdoor or web shell. }, references: { 'Blackhat' => 'https://www.blackhat.com/presentations/bh-usa-07/Wysopal_and_Eng/Presentation/bh-usa-07-wysopal_and_eng.pdf' }, tags: %w(path backdoor file discovery), severity: Severity::HIGH, remedy_guidance: %q{ If manual confirmation reveals that a web backdoor or web shell does exist on the server, then it should be removed. It is also recommended that an incident response investigation be conducted on the server to establish how the web backdoor or web shell came to end up on the server. Depending on the environment, investigation into the compromise of any other services or servers should be conducted. } } } end |
Instance Method Details
#run ⇒ Object
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# File 'components/checks/passive/backdoors.rb', line 18 def run return if page.code != 200 path = get_path( page.url ) return if audited?( path ) self.class.filenames.each { |file| log_remote_file_if_exists( path + file ) } audited( path ) end |