{"id":13120,"date":"2021-07-20T15:18:12","date_gmt":"2021-07-20T20:18:12","guid":{"rendered":"https:\/\/rud.is\/b\/?p=13120"},"modified":"2021-07-20T15:18:12","modified_gmt":"2021-07-20T20:18:12","slug":"packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark","status":"publish","type":"post","link":"https:\/\/rud.is\/b\/2021\/07\/20\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\/","title":{"rendered":"Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark"},"content":{"rendered":"<p>It was a rainy weekend in southern Maine and I really didn&#8217;t feel like doing chores, so I was skimming through RSS feeds and noticed a link to a <a href=\"https:\/\/cyberdefenders.org\/labs\/68\">PacketMaze challenge<\/a> in the latest <a href=\"https:\/\/thisweekin4n6.com\/2021\/07\/18\/week-29-2021\/\">This Week In 4n6<\/a>.<\/p>\n<p>Since it&#8217;s also been a while since I&#8217;ve done any serious content delivery (on the personal side, anyway), I thought it&#8217;d be fun to solve the challenge with some tools I like \u2014\u00a0namely Zeek, tshark, and R (links to those in the e-book I&#8217;m linking to below), craft some real expository around each solution, and bundle it all up into an <a href=\"https:\/\/rud.is\/books\/packet-maze\/\">e-book<\/a> and lighter-weight <a href=\"https:\/\/github.com\/hrbrmstr\/packet-maze-example\">GitHub repo<\/a>.<\/p>\n<p>There are 11 &#8220;quests&#8221; in the challenge, requiring sifting through a packet capture (PCAP) and looking for various odds and ends (some are very windy maze passages). The challenge ranges from extracting images and image metadata from FTP sessions to pulling out precise elements in TLS sessions, to dealing with IPv6.<\/p>\n<p>This is far from an expert challenge, and anyone can likely work through it with a little bit of elbow grease.<\/p>\n<p>As it says on the tin, not all data is \u2018big\u2019 nor do all data-driven cybersecurity projects require advanced modeling capabilities. Sometimes you just need to dissect some network packet capture (PCAP) data and don\u2019t want to click through a GUI to get the job done. This short book works through the questions in <a href=\"https:\/\/cyberdefenders.org\/labs\/68\">CyberDefenders Lab #68<\/a> to show how you can get the <a href=\"https:\/\/zeek.org\/\">Zeek open source network security tool<\/a>, <a href=\"https:\/\/www.wireshark.org\/docs\/man-pages\/tshark.html\"><code>tshark<\/code> command-line PCAP analysis Swiss army knife<\/a>, and <a href=\"https:\/\/www.r-project.org\/\">R<\/a> (via <a href=\"https:\/\/www.rstudio.com\/\">RStudio<\/a>) working together.<\/p>\n<h3>FIN<\/h3>\n<p>If you find the resource helpful or have other feedback, drop a note on Twitter (@hrbrmstr), in a comment here, or as a GitHub issue.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>It was a rainy weekend in southern Maine and I really didn&#8217;t feel like doing chores, so I was skimming through RSS feeds and noticed a link to a PacketMaze challenge in the latest This Week In 4n6. Since it&#8217;s also been a while since I&#8217;ve done any serious content delivery (on the personal side, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":3,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[681,677,709,754,764,74,3,798,91],"tags":[],"class_list":["post-13120","post","type-post","status-publish","format-standard","hentry","category-cybersecurity","category-data-analysis-2","category-data-driven-security","category-data-science","category-data-wrangling","category-dns","category-information-security","category-pcap","category-r"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark - rud.is<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rud.is\/b\/2021\/07\/20\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark - rud.is\" \/>\n<meta property=\"og:description\" content=\"It was a rainy weekend in southern Maine and I really didn&#8217;t feel like doing chores, so I was skimming through RSS feeds and noticed a link to a PacketMaze challenge in the latest This Week In 4n6. Since it&#8217;s also been a while since I&#8217;ve done any serious content delivery (on the personal side, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rud.is\/b\/2021\/07\/20\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\/\" \/>\n<meta property=\"og:site_name\" content=\"rud.is\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-20T20:18:12+00:00\" \/>\n<meta name=\"author\" content=\"hrbrmstr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"hrbrmstr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/\"},\"author\":{\"name\":\"hrbrmstr\",\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/#\\\/schema\\\/person\\\/d7cb7487ab0527447f7fda5c423ff886\"},\"headline\":\"Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark\",\"datePublished\":\"2021-07-20T20:18:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/\"},\"wordCount\":300,\"commentCount\":7,\"publisher\":{\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/#\\\/schema\\\/person\\\/d7cb7487ab0527447f7fda5c423ff886\"},\"articleSection\":[\"Cybersecurity\",\"Data Analysis\",\"data driven security\",\"data science\",\"data wrangling\",\"DNS\",\"Information Security\",\"pcap\",\"R\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/\",\"url\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/\",\"name\":\"Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark - rud.is\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/#website\"},\"datePublished\":\"2021-07-20T20:18:12+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/2021\\\/07\\\/20\\\/packet-maze-solving-a-cyberdefenders-pcap-puzzle-with-r-zeek-and-tshark\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/rud.is\\\/b\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rud.is\\\/b\\\/#website\",\"url\":\"https:\\\/\\\/rud.is\\\/b\\\/\",\"name\":\"rud.is\",\"description\":\"&quot;In God we trust. 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You can find the source Rmd on GitHub, but I'm also testing the limits of WP's markdown rendering and putting it in-stream as well. No longer book expository this time since\u2026","rel":"","context":"In &quot;Cybersecurity&quot;","block_context":{"text":"Cybersecurity","link":"https:\/\/rud.is\/b\/category\/cybersecurity\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6127,"url":"https:\/\/rud.is\/b\/2017\/07\/27\/reading-pcap-files-with-apache-drill-and-the-sergeant-r-package\/","url_meta":{"origin":13120,"position":1},"title":"Reading PCAP Files with Apache Drill and the sergeant R Package","author":"hrbrmstr","date":"2017-07-27","format":false,"excerpt":"It's no secret that I'm a fan of Apache Drill. 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