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Ident is an application and service fingerprinting library used within Intrigue Core.

The Ident project has a few stated goals:

  • To deeply identify network service and app software while remaining extremely fast - limiting unnecessary requests
  • To have the most complete set of identification checks for modern application and server software
  • To integrate well as a library, for easy use in other projects such as Intrigue Core
  • To maintain a robust command line interface for use as a standalone tool
  • To be commercially viable through use of the BSD license

Ident is written in Ruby and uses the lightning fast libcurl-backed Typhoeus and the powerful Socketry libraries to make requests.

Below, find instruction on how to get stated:

Using ident via Docker image:

  1. Pull and run the docker image! It'll download directly from DockerHub if the image doesnt exist locally docker run -t intrigueio/intrigue-ident -u


$ bundle exec ruby ./util/ident.rb -c -v -u
 - PHP PHP 5.4.16  - x-powered-by header (CPE: cpe:2.3:a:php:php:5.4.16:) (Tags: ["Web Framework"])
   - Vuln: CVE-2016-5768 (CVSSv3: 9.8)
   - Vuln: CVE-2016-4538 (CVSSv3: 9.8)
 - PHP PHP   - PHPSESSID cookie (CPE: cpe:2.3:a:php:php::) (Tags: ["Web Framework"])
 - Apache HTTP Server 2.4.6  - Apache web server - server header - with versions (CPE: cpe:2.3:a:apache:http_server:2.4.6:) (Tags: ["Web Server"])
   - Vuln: CVE-2018-1312 (CVSSv3: 9.8)
   - Vuln: CVE-2017-15715 (CVSSv3: 8.1)
 - Wordpress Wordpress   - common link (CPE: cpe:2.3:a:wordpress:wordpress::) (Tags: ["CMS"])
 - Yoast Wordpress SEO   - unique string (CPE: cpe:2.3:a:yoast:wordpress_seo::) (Tags: ["Marketing", "Wordpress Plugin"])
 - Bootstrap Bootstrap   - boostrap css (CPE: cpe:2.3:a:bootstrap:bootstrap::) (Tags: ["Web Framework"])
 - OpenSSL OpenSSL 1.0.2k-fips  - server header (CPE: cpe:2.3:a:openssl:openssl:1.0.2k-fips:) (Tags: ["Library"])
   - Vuln: CVE-2018-0732 (CVSSv3: 7.5)
Content Checks:
 - Authentication - HTTP: false
 - Authentication - Session Identifier: true
 - Google Analytics Account Detected: false
 - Location Header:
 - Directory Listing Detected: false
 - Form Detected: false
 - File Upload Form Detected: false
 - Email Addresses Detected: []
 - Access-Control-Allow-Origin Header: false
 - P3P Header: false
 - X-Frame-Options Header: true
 - X-XSS-Protection Header: false

For Check Writers:

Check types can be written against supported protocols:

  • AMQP
  • Cisco Smart Install
  • DNS
  • Elasticsearch
  • FTP
  • Mongodb
  • Mysql
  • Oracle T3 (Raw)
  • Pop3
  • RDP (Raw)
  • Redis
  • SMB
  • SMTP
  • SNMP
  • SSH
  • Telnet

Generally speaking, checks have the following structure. This is a check for HTTP and HTTPS:

          type: "fingerprint",
          category: "service",
          vendor: "Some",
          product: "Product",
          website: "",
          match_logic: :all,
          matches: [
              match_type: :content_title,
              match_content: /The Title of the Page/i
              match_type: :content_body,
              match_content: /any body string/i
              match_type: :content_code,
              match_content: 200
          description: "just an example check",
          paths: [ { path: "#{url}", follow_redirects: true } ]

There are many types of matchers, which tell the check what part of the target's response to check.

 - content_body: checks should be run against body
 - content_code: checks should be run against code returned in the response as an integer (note that this is generally only useful for follow-on checks)
 - content_cookies: checks should be run against the set-cookie: header (do not include the header name, just the content when writing checks)
 - content_generator:  checks should be run against text inside the <meta generator> tag (do not include the tag when writing checks)
 - content_headers: checks should be run against response headers (assumes one string of text, each header '\n' delimited)
 - content_title: checks should be run against text inside the <title> tag (do not include the tag when writing checks)

Multiple matches per check are supported, see:

For more details, have a look at the checks in the 'checks' directory, or jump into our slack channel for help.


A special thanks to the following contributors who help make ident awesome!

  • @adambakalar: Protocol support and Fingerprints
  • @duartemateus: Bugfixes, Architecture, Protocol support and Fingerprints
  • @chowdud: Fingerprints++ **
  • @jen140: Fingerprints
  • @shpendk: Fingerprints, Architecture
  • @m-q-t: Fingerprints, Architecture
  • @bensalah_anas: Fingerprints
  • @bcoles: Fingerprints, Bugfixes, JSON output
  • @bmcdevitt: Fingerprints
  • @retornam: Dockerization