--- title: TryHackMe Hackers Holiday Day 4 Packed Light Write-Up |... description: A walkthrough of TryHackMe's Hackers Holiday Day 4 'Packed Light' challenge, covering network forensics and PCAP analysis. The room involves identifying a... canonical: https://daily.dev/posts/tryhackme-hackers-holiday-day-4-packed-light-write-up-complete-walkthrough-gztftre5x twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: TryHackMe Hackers Holiday Day 4 Packed Light Write-Up | Complete Walkthrough | daily.dev og:description: A walkthrough of TryHackMe's Hackers Holiday Day 4 'Packed Light' challenge, covering network forensics and PCAP analysis. The room involves identifying a... og:url: https://daily.dev/posts/tryhackme-hackers-holiday-day-4-packed-light-write-up-complete-walkthrough-gztftre5x og:image: https://api.daily.dev/og/posts/gzTftRe5X.png og:image:alt: TryHackMe Hackers Holiday Day 4 Packed Light Write-Up | Complete Walkthrough og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # TryHackMe Hackers Holiday Day 4 Packed Light Write-Up | Complete Walkthrough **[Medium](https://daily.dev/sources/medium_js)** · 3 min read · 0 upvotes · 0 comments ## Summary A walkthrough of TryHackMe's Hackers Holiday Day 4 'Packed Light' challenge, covering network forensics and PCAP analysis. The room involves identifying a keylogger that exfiltrates keystrokes to a C2 server via HTTP GET requests, hiding encoded and XOR-encrypted data in Cookie headers to evade detection. The write-up guides through filtering traffic in Wireshark on port 8080, following HTTP streams to discover the malicious code, extracting keystroke data from Cookie headers, and decoding it with a custom Python script. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Hack the Box Walkthrough: Cap](https://daily.dev/posts/hack-the-box-walkthrough-cap-3znpnhqpq) · InfoSec Write-ups · 1 upvotes · 0 comments - [TryHackMe — Blog CTF \| Full Write-Up](https://daily.dev/posts/tryhackme-blog-ctf-full-write-up-clubifl5s) · InfoSec Write-ups · 0 upvotes · 0 comments - [HTB — CAP Writeup](https://daily.dev/posts/htb-cap-writeup-f92ho9xlh) · InfoSec Write-ups · 1 upvotes · 0 comments - [HTB Sherlocks: Meerkat Walkthrough](https://daily.dev/posts/htb-sherlocks-meerkat-walkthrough-jpyxo75mo) · InfoSec Write-ups · 0 upvotes · 0 comments - [TryHackMe: Room 404 Walkthrough \(Hacker’s Holiday Challenge\)](https://daily.dev/posts/tryhackme-room-404-walkthrough-hacker-s-holiday-challenge--np3fgcqtz) · InfoSec Write-ups · 0 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#cryptography](https://daily.dev/tags/cryptography), [#wireshark](https://daily.dev/tags/wireshark) [View this post on daily.dev](https://daily.dev/posts/tryhackme-hackers-holiday-day-4-packed-light-write-up-complete-walkthrough-gztftre5x) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"TryHackMe Hackers Holiday Day 4 Packed Light Write-Up | Complete Walkthrough","url":"https://daily.dev/posts/tryhackme-hackers-holiday-day-4-packed-light-write-up-complete-walkthrough-gztftre5x","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/tryhackme-hackers-holiday-day-4-packed-light-write-up-complete-walkthrough-gztftre5x"},"datePublished":"2026-08-02T20:42:46.012Z","dateModified":"2026-08-02T20:44:18.228Z","description":"A walkthrough of TryHackMe's Hackers Holiday Day 4 'Packed Light' challenge, covering network forensics and PCAP analysis. 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