Writeup on Ha1fdanhttps://ha1fdan.xyz/en/tags/writeup/Recent content in Writeup on Ha1fdanHugoen-usha1fdan.xyzSat, 28 Feb 2026 00:00:00 +0000DDC - Fast Track Junior 2026 : Writeupshttps://ha1fdan.xyz/en/posts/ddc_fasttrack_junior_2026/Sat, 28 Feb 2026 00:00:00 +0000https://ha1fdan.xyz/en/posts/ddc_fasttrack_junior_2026/<h2 id="scoreboard">Scoreboard:</h2> <p><img src="https://ha1fdan.xyz/ddc_fasttrack_2026/scoreboard.png" alt="Scoreboard"></p> <hr> <p><a href="https://ha1fdan.xyz/ddc_fasttrack_2026/my-solves.png">Link til mine løste opgaver inklusiv tidspunkt</a></p> <h2 id="opgaver-løst-i-den-rækkefølge-jeg-løste-dem">Opgaver løst (I den rækkefølge jeg løste dem):</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> </tr> </thead> <tbody> <tr> <td><a href="#youve-got-mail-2">Youve got mail 2!</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#youve-got-mail">Youve got mail!</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#peaceful">Peaceful</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#windows-forensics-hell">Windows Forensics Hell</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#reactor">Reactor</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#mitosis">Mitosis</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#squeaky-clean-1">Squeaky Clean 1</a></td> <td>Boot 2 Root</td> </tr> <tr> <td><a href="#corsica">Corsica</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#backup">Backup</a></td> <td>Web exploitation</td> </tr> </tbody> </table> <hr> <h2 id="youve-got-mail-2">Youve got mail 2!</h2> <p>Dammit!&hellip; I did it again&hellip; But this time it seemed sooooo convincing? Like what even happened?&hellip;</p>DDC - Qualifiers Junior 2026 : Writeupshttps://ha1fdan.xyz/en/posts/ddc_qualifiers_junior_2026/Fri, 20 Feb 2026 00:00:00 +0000https://ha1fdan.xyz/en/posts/ddc_qualifiers_junior_2026/<h2 id="scoreboard">Scoreboard:</h2> <p><img src="https://ha1fdan.xyz/ddc_qual_2026/scoreboard.png" alt="Scoreboard"></p> <hr> <p><a href="https://ha1fdan.xyz/ddc_qual_2026/my-solves.png">Link til mine løste opgaver inklusiv tidspunkt</a></p> <h2 id="opgaver-løst-i-den-rækkefølge-jeg-løste-dem">Opgaver løst (I den rækkefølge jeg løste dem):</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> </tr> </thead> <tbody> <tr> <td><a href="#-broken-invoice">⭐️ Broken Invoice</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#-pepstein">⭐️ Pepstein</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#-alog">⭐️ alog</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#binary-caesar">Binary Caesar</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#fibonacci-caesar">Fibonacci Caesar</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#-hasher-trust-the-hash-they-said">⭐️ Hasher: Trust the Hash (They Said)</a></td> <td>Misc</td> </tr> <tr> <td><a href="#wifi-heist">WiFi Heist</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#call-me-maybe">Call Me Maybe</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#-g-server">⭐️ G-Server</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#-existential-loading-bar">⭐️ Existential loading bar</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#unbake-the-cake">Unbake the cake</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#pleasenocry">PleaseNoCry</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#disk-encryption">Disk Encryption</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#fear-of-long-words">fear of long words</a></td> <td>Binary</td> </tr> <tr> <td><a href="#kopi-pasta">kopi pasta</a></td> <td>Boot to root</td> </tr> <tr> <td><a href="#bootstrap-betrayal">Bootstrap Betrayal</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#persistance-is-key">Persistance is Key</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#jeg-har-mistet-min-pakke">Jeg har mistet min pakke</a></td> <td>Misc</td> </tr> <tr> <td><a href="#the-contract">The Contract</a></td> <td>Cryptography</td> </tr> </tbody> </table> <hr> <h2 id="-broken-invoice">⭐️ Broken Invoice</h2> <p>Jeg har lige modtaget en faktura fra et firma, men den virker til at være beskadiget.<br> Kan du hjælpe mig med at finde ud af, hvad der er galt med den?</p>NC3 CTF 2025 : Writeupshttps://ha1fdan.xyz/en/posts/nc3_ctf_2025/Thu, 11 Dec 2025 00:00:00 +0000https://ha1fdan.xyz/en/posts/nc3_ctf_2025/<h1 id="nc3-ctf-2025">NC3 CTF 2025</h1> <p><strong>Team:</strong> <a href="https://nc3ctf.dk/teams/46">Campfire Security</a></p> <p><strong>Total Score</strong>: 6270 points @ 17th place</p> <h2 id="challenges-jeg-løste-for-teamet">Challenges jeg løste for teamet:</h2> <table> <thead> <tr> <th>Challenge</th> <th>Kategori</th> </tr> </thead> <tbody> <tr> <td><a href="#rensdjyr-remix">RensDJyr Remix</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#rensdyrrygter">RensdyrRygter</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#drillenissen">Drillenissen</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#makulatoren">Makulatoren</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#humlebiens-flugt--1">Humlebiens Flugt 🐝 (1)</a></td> <td>Malware</td> </tr> <tr> <td><a href="#gremlinshop-autoriseret-adgang">Gremlinshop: Autoriseret Adgang</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#gremlinshop-begravet-i-m%C3%A6ngden">Gremlinshop: Begravet i mængden</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#nissrensics-r%C3%A6v-og-n%C3%B8gler">Nissrensics: Ræv og Nøgler</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#santashield-security-3">SantaShield Security #3</a></td> <td>Boot2Root</td> </tr> <tr> <td><a href="#santashield-security-2">SantaShield Security #2</a></td> <td>Boot2Root</td> </tr> <tr> <td><a href="#%C3%B8nskomania-6000">Ønskomania 6000</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#%C3%B8nskomania-7000">Ønskomania 7000</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#minos-1-initial-access">Minos 1: Initial Access</a></td> <td>Malware</td> </tr> <tr> <td><a href="#humlebiens-flugt--2">Humlebiens Flugt 🐝🐝 (2)</a></td> <td>Malware</td> </tr> <tr> <td><a href="#%C3%B8nskomafia">Ønskomafia</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#julekortet">Julekortet</a></td> <td>Reversing</td> </tr> <tr> <td><a href="#ace0fbase">Ace0fbase</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#minos-5-panel">Minos 5: Panel</a></td> <td>Malware</td> </tr> <tr> <td><a href="#minos-7-takedown">Minos 7: Takedown</a></td> <td>Malware</td> </tr> <tr> <td><a href="#minos-6-server">Minos 6: Server</a></td> <td>Malware</td> </tr> <tr> <td><a href="#minos-4-infostealer">Minos 4: Infostealer</a></td> <td>Malware</td> </tr> <tr> <td><a href="#humlebiens-flugt--3">Humlebiens Flugt 🐝🐝🐝 (3)</a></td> <td>Malware</td> </tr> </tbody> </table> <h2 id="score-over-tid">Score over tid:</h2> <p><img src="https://ha1fdan.xyz/nc3_2025/Score_over_Time.png" alt="Score_over_Time.png"></p>International Cybersecurity Olympiad (ICO) 2025 : Writeupshttps://ha1fdan.xyz/en/posts/ico2025-contest/Tue, 24 Jun 2025 20:27:20 +0800https://ha1fdan.xyz/en/posts/ico2025-contest/<h1 id="about-ico">About ICO</h1> <p>The International Cybersecurity Olympiad (ICO) is a premier global student cybersecurity competition, inspired by flagship academic Olympiads like the IOI and IMO. Hosted by the NUS School of Computing in Singapore, it took place from June 22 - 28, 2025 across venues at University Town (U-Town) and COM3. Designed to address the critical shortage of cybersecurity talent worldwide, ICO brings together the brightest students from 28 countries, each fielding a team of four students and two team leaders, chosen through rigorous national qualifiers . Supported by organizations like the Cyber Security Agency of Singapore, it is led by academics and industry experts, including <a href="https://www.comp.nus.edu.sg/cs/people/tanst/">Assoc. Prof. Tan Sun Teck</a>, President of the IOI.</p>National Cybersecurity Olympiad (NCO) 2025 - Practice Platform : Writeupshttps://ha1fdan.xyz/en/posts/nco2025_practice/Tue, 20 May 2025 17:15:27 +0200https://ha1fdan.xyz/en/posts/nco2025_practice/<p>A month before the International Cybersecurity Olympiad (ICO) 2025, we got access to the National Cybersecurity Olympiad (NCO) 2025 as a practice platform. The NCO is a national-level competition in cybersecurity, and the practice platform provides a range of challenges to help participants prepare for the ICO.</p> <h2 id="challenges-in-no-particular-order">Challenges (In no particular order)</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> </tr> </thead> <tbody> <tr> <td><a href="#challenge-3">Challenge 3</a></td> <td>Steganography</td> </tr> <tr> <td><a href="#reverse-engineering">Reverse Engineering</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#mystery_1">Mystery_1</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#mystery_2">Mystery_2</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#mystery_3">Mystery_3</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#analyse-packet-ii">Analyse Packet II</a></td> <td>Networking</td> </tr> <tr> <td><a href="#pentest-challenge">Pentest Challenge</a></td> <td>Pentest</td> </tr> </tbody> </table> <hr> <h3 id="challenge-3">Challenge 3</h3> <p>We were given 2 png files. Both of the images looked to be the same, but some pixels were different. The task was to find the difference between the two images.</p>DDC - Nationals Junior 2025 : Writeupshttps://ha1fdan.xyz/en/posts/ddc_nationals_junior_2025/Sat, 03 May 2025 00:00:00 +0000https://ha1fdan.xyz/en/posts/ddc_nationals_junior_2025/<blockquote> <p>En kæmpe tak til DDC for at arrangere denne fantastiske begivenhed og til alle de deltagende for at gøre det til en uforglemmelig oplevelse! 🙌</p> </blockquote> <h2 id="junior-scoreboard-top-10">Junior Scoreboard (top 10):</h2> <p><img src="https://ha1fdan.xyz/ddc_nationals_2025/top_10_users.png" alt="ddc2024_scoreboard.png"></p> <hr> <h2 id="opgaver-løst">Opgaver løst:</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> <th>Value</th> </tr> </thead> <tbody> <tr> <td><a href="#random-aes">Random AES</a></td> <td>Cryptography</td> <td>100</td> </tr> <tr> <td><a href="#photo-album">Photo Album</a></td> <td>Web exploitation</td> <td>217</td> </tr> <tr> <td><a href="#1337guesser">1337guesser</a></td> <td>Reverse Engineering</td> <td>100</td> </tr> <tr> <td><a href="#block-party">Block Party</a></td> <td>Cryptography</td> <td>186</td> </tr> <tr> <td><a href="#unexpected-invoice">Unexpected Invoice</a></td> <td>Forensics</td> <td>353</td> </tr> <tr> <td><a href="#b%C3%B8f-baserede-v%C3%A6rdipapirer-og-emails">Bøf-baserede værdipapirer og emails</a></td> <td>Forensics</td> <td>557</td> </tr> <tr> <td><a href="#evilplot-parking-group">EvilPlot Parking Group</a></td> <td>Web exploitation</td> <td>186</td> </tr> <tr> <td><a href="#bugtracker">BugTracker</a></td> <td>Web exploitation</td> <td>100</td> </tr> <tr> <td><a href="#the-legend">The Legend</a></td> <td>Web exploitation</td> <td>709</td> </tr> <tr> <td><a href="#el-reverso">El Reverso</a></td> <td>Binary</td> <td>300</td> </tr> </tbody> </table> <p><strong>Disse opgaver gav mig 2808 points og en 6 plads i Junior kategorien.</strong></p>DDC - Regionals Junior 2025 : Writeupshttps://ha1fdan.xyz/en/posts/ddc_regionals_junior_2025/Sat, 05 Apr 2025 00:00:00 +0000https://ha1fdan.xyz/en/posts/ddc_regionals_junior_2025/<blockquote> <p>Tusind tak til DDC for at lave denne fantastiske CTF, og til alle de andre deltagere for at gøre det sjovt! Jeg havde en fantastisk tid og lærte meget. Jeg glæder mig til at se jer til nationals!</p> </blockquote> <h2 id="syddanmark-scoreboard">Syddanmark Scoreboard:</h2> <p><img src="https://ha1fdan.xyz/ddc_regionals_2025/syddanmark.png" alt="ddc2024_scoreboard.png"></p> <h2 id="global-scoreboard-top-10">Global Scoreboard (top 10):</h2> <p><img src="https://ha1fdan.xyz/ddc_regionals_2025/top10_global.png" alt="ddc2024_scoreboard.png"></p> <p><a href="https://ha1fdan.xyz/ddc_regionals_2025/Slides_RM_2025_announcement.pdf">Powerpoint med resultater</a></p> <hr> <h2 id="opgaver-løst">Opgaver løst</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> </tr> </thead> <tbody> <tr> <td><a href="#exponential-caesar">Exponential Caesar</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#nitrogenerator">NitroGenerator</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#wizardtrial">WizardTrial</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#baby-session-forger">Baby session forger</a></td> <td>Misc</td> </tr> <tr> <td><a href="#katchat">KatChat</a></td> <td>Beginner</td> </tr> <tr> <td><a href="#gateway">Gateway</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#sysmon-spectacle">sysmon-spectacle</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#third-time-is-the-charm">Third time is the charm</a></td> <td>Boot2Root</td> </tr> <tr> <td><a href="#find-my-files">Find my files</a></td> <td>Boot2Root</td> </tr> <tr> <td><a href="#stuckat99">StuckAt99</a></td> <td>Binary</td> </tr> <tr> <td><a href="#systemreaper">SystemReaper</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#hidden-in-plain-sight">Hidden in Plain Sight</a></td> <td>Misc</td> </tr> </tbody> </table> <p><strong>Disse opgaver gav mig 2636 points og en 3 plads i Syddanmark, og 4 plads på hele Junior platformen.</strong></p>DDC - Qualifiers Junior 2025 : Writeupshttps://ha1fdan.xyz/en/posts/ddc_qualifiers_junior_2025/Sun, 16 Mar 2025 00:00:00 +0000https://ha1fdan.xyz/en/posts/ddc_qualifiers_junior_2025/<h2 id="scoreboard">Scoreboard:</h2> <p><img src="https://ha1fdan.xyz/ddc_qual_2025/scoreboard_top10.png" alt="Scoreboard"></p> <p>Slut scoreboard: <a href="https://ha1fdan.xyz/ddc_qual_2025/scoreboard_med_score.png">Scoreboard med score (top 10)</a></p> <p><strong>Jeg var den første der kvalificerede sig på junior holdet, efter bare 24min og 44sek.</strong></p> <p><img src="https://ha1fdan.xyz/ddc_qual_2025/first_kval.png" alt="Discord Kvalifikation Besked"></p> <hr> <h2 id="opgaver-løst-i-den-rækkefølge-jeg-løste-dem">Opgaver løst (I den rækkefølge jeg løste dem):</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> </tr> </thead> <tbody> <tr> <td><a href="#aes-decryption">AES Decryption</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#find-frontdoor">Find Frontdoor</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#read-the-rules">Read the rules</a></td> <td>Kvalifikation</td> </tr> <tr> <td><a href="#efterforskningen">Efterforskningen</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#straba">Straba</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#outxorcing">OutXORcing</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#vigeneres-dictionary">Vigeneres dictionary</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#binary-encodings1">Binary-Encodings1</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#cross-site-job">Cross Site Job</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#complete-styling-sadness">Complete Styling Sadness</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#shutter-trace">Shutter Trace</a></td> <td>Misc</td> </tr> <tr> <td><a href="#long-live-caesar">Long live Caesar</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#hasher-is-back">Hasher is back</a></td> <td>Misc</td> </tr> <tr> <td><a href="#the-professors-lost-note">The Professors Lost Note</a></td> <td>Misc</td> </tr> <tr> <td><a href="#what-time-is-it">What time is it</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#gotowin">gotowin</a></td> <td>Binary</td> </tr> <tr> <td><a href="#leaky-store">Leaky Store</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#ping-sweep">ping-sweep</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#the-gauntlet-pt-1">The Gauntlet pt 1</a></td> <td>Boot2root</td> </tr> <tr> <td><a href="#masahiro-hara">Masahiro Hara</a></td> <td>Misc</td> </tr> <tr> <td><a href="#passprotector">PassProtector</a></td> <td>Reverse Engineering</td> </tr> <tr> <td><a href="#pwn-me-good-uwu">PWN me good uwu</a></td> <td>Binary</td> </tr> <tr> <td><a href="#ddc-lounge">DDC Lounge</a></td> <td>Web exploitation</td> </tr> <tr> <td><a href="#covertchannel2">covertchannel2</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#pwn-me-good-uwu---wifu-edition">PWN me good uwu - Wifu Edition</a></td> <td>Binary</td> </tr> </tbody> </table> <hr> <h3 id="aes-decryption">AES Decryption</h3> <p>You&rsquo;ve intercepted a Base64-encoded AES-encrypted message, along with a potential key. Analyze and decrypt the ciphertext to uncover the secret at:</p>NC3 CTF 2024 : Writeupshttps://ha1fdan.xyz/en/posts/nc3_ctf_2024/Mon, 16 Dec 2024 00:00:00 +0000https://ha1fdan.xyz/en/posts/nc3_ctf_2024/<h1 id="nc3-ctf-2024">NC3 CTF 2024</h1> <p><strong>Team:</strong> <a href="https://nc3ctf.dk/teams/45">OUHohoho</a></p> <p><strong>Total Score</strong>: 2272 points @ 24th place</p> <h2 id="løste-challenges">Løste challenges:</h2> <table> <thead> <tr> <th>Challenge</th> <th>Kategori</th> </tr> </thead> <tbody> <tr> <td><a href="#discord">Discord</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#regler">Regler</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#start-her">Start her!</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#nissesnak">Nissesnak</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#skoleudflugten">Skoleudflugten</a></td> <td>OSINT</td> </tr> <tr> <td><a href="#mere-kanel">Mere kanel!</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#julebrev">Julebrev</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#gammelnissen">Gammelnissen</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#kryptoplikation">Kryptoplikation</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#nisse_pension">Nisse-pension</a></td> <td>Reversing</td> </tr> <tr> <td><a href="#styrtet">Styrtet</a></td> <td>OSINT</td> </tr> <tr> <td><a href="#gnomernes-tegnestue">Gnomernes Tegnestue</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#julens-undergang">Julens Undergang</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#a-deep-secret">A Deep Secret</a></td> <td>Stego</td> </tr> <tr> <td><a href="#nisseportalen-1">Nisseportalen #1</a></td> <td>Boot2root</td> </tr> <tr> <td><a href="#julemandens-nskeliste">Julemandens Ønskeliste</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#gnomernes-h%C3%A6vn">Gnomernes Hævn</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#flimmer-p%C3%A5-fjernsynet">Flimmer På Fjernsynet</a></td> <td>Stego</td> </tr> <tr> <td><a href="#postnordpolen-i">PostNordpolen I</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#regnskabsnisserne">Regnskabsnisserne</a></td> <td>Kom godt i gang</td> </tr> <tr> <td><a href="#ondsindede-loginfors%C3%B8g">Ondsindede Loginforsøg</a></td> <td>Efterforskning: Det Store Nissehack</td> </tr> <tr> <td><a href="#serverskjulet">Serverskjulet</a></td> <td>Efterforskning: Det Store Nissehack</td> </tr> <tr> <td><a href="#postnordpolen-ii">PostNordpolen II</a></td> <td>Crypto</td> </tr> <tr> <td><a href="#kodedepotets-hemmelighed">Kodedepotets Hemmelighed</a></td> <td>Efterforskning: Det Store Nissehack</td> </tr> <tr> <td><a href="#alternativ-kodedeling">Alternativ Kodedeling</a></td> <td>Efterforskning: Det Store Nissehack</td> </tr> <tr> <td><a href="#gerningsgnomens-afsl%C3%B8ring">Gerningsgnomens Afsløring</a></td> <td>Efterforskning: Det Store Nissehack</td> </tr> <tr> <td><a href="#nisse-g%C3%A6ld">Nisse-gæld</a></td> <td>Pwn</td> </tr> <tr> <td><a href="#skattekammeret-robotnisse">Skattekammeret - robotnisse</a></td> <td>Boot2root</td> </tr> <tr> <td><a href="#skattekammeret-storenisse">Skattekammeret - storenisse</a></td> <td>Boot2root</td> </tr> <tr> <td><a href="#gremlingram">GremlinGram</a></td> <td>Stego</td> </tr> <tr> <td><a href="#nisseportalen-2">Nisseportalen #2</a></td> <td>Boot2root</td> </tr> <tr> <td><a href="#gift-wrappinator-9001">Gift Wrappinator 9001</a></td> <td>Reversing</td> </tr> <tr> <td><a href="#raided">Raided</a></td> <td>Forensics</td> </tr> </tbody> </table> <h2 id="score-over-tid">Score over tid:</h2> <p><img src="https://ha1fdan.xyz/nc3_2024/Score_over_Time.png" alt="Score_over_Time.png"></p>Huntress CTF 2024 : Writeupshttps://ha1fdan.xyz/en/posts/huntress-24/Tue, 01 Oct 2024 00:00:00 +0000https://ha1fdan.xyz/en/posts/huntress-24/<h1 id="huntress-ctf-2024">Huntress CTF 2024</h1> <p><strong>User:</strong> <a href="https://huntress.ctf.games/users/3054">ha1fdan</a></p> <p><strong>Total Score</strong>: 1550 points @ 453rd place</p> <p><strong><strong>I stopped solving challenges after October 22nd, since I went on vacation and didn&rsquo;t have time to solve them.</strong></strong></p> <h2 id="solves">Solves:</h2> <table> <thead> <tr> <th>Challenge</th> <th>Category</th> </tr> </thead> <tbody> <tr> <td><a href="#technical-support">Technical Support</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#too-many-bits">Too Many Bits</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#read-the-rules">Read The Rules</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#matryoshkaqr">MatryoshkaQR</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#base64by32">Base64by32</a></td> <td>Scripting</td> </tr> <tr> <td><a href="#cattle">Cattle</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#nightmare-on-hunt-street">Nightmare on Hunt Street</a></td> <td>Challenge Group - Forensics</td> </tr> <tr> <td><a href="#no-need-for-brutus">No need for Brutus</a></td> <td>Cryptography</td> </tr> <tr> <td><a href="#strange-calc">Strange Calc</a></td> <td>Malware</td> </tr> <tr> <td><a href="#russian-roulette">Russian Roulette</a></td> <td>Malware</td> </tr> <tr> <td><a href="#whamazon">Whamazon</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#red-phish-blue-phish">Red Phish Blue Phish</a></td> <td>Miscellaneous</td> </tr> <tr> <td><a href="#unbelievable">Unbelievable</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#malibu">Malibu</a></td> <td>Miscellaneous</td> </tr> <tr> <td><a href="#txt-message">TXT Message</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#mimi">Mimi</a></td> <td>Malware</td> </tr> <tr> <td><a href="#discount-programming-devices">Discount Programming Devices</a></td> <td>Malware</td> </tr> <tr> <td><a href="#mystery">Mystery</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#i-cant-ssh">I Can&rsquo;t SSH</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#finders-fee">Finders Fee</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#zulu">Zulu</a></td> <td>Warmups</td> </tr> <tr> <td><a href="#linux-basics">Linux Basics</a></td> <td>Miscellaneous</td> </tr> <tr> <td><a href="#keyboard-junkie">Keyboard Junkie</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#obfuscation-station">Obfuscation Station</a></td> <td>Forensics</td> </tr> <tr> <td><a href="#strive-marish-leadman-typecdr">Strive Marish Leadman TypeCDR</a></td> <td>Cryptography</td> </tr> </tbody> </table> <h2 id="score-over-time">Score over time:</h2> <p><img src="https://ha1fdan.xyz/huntress24/Score_over_Time.png" alt="Score_over_Time.png"></p>