--- title: "#write-up articles | Hashnode" description: "Explore 393 articles tagged #write-up on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/write-up" --- Tag # #write-up 393 posts · 57 followers [Molly Sohaney](https://hashnode.com/@mollysohaney) · [1d ago](https://hashnode.com/posts/ctf-writeup-lottery-blockchain-css-ctf-2026-return-of-nexus/6af26e99a7de4158d8216f11) ### [CTF Writeup: Lottery | Blockchain | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-lottery-blockchain-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description Beyond the checkpoint, a Beltway Bandits gambling terminal has resumed broadcasting: "Ten wins in a row. One fortune. No second chances." Once used to distribute stolen credits, it now ho 7 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-lottery-blockchain-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [1d ago](https://hashnode.com/posts/ctf-writeup-gateway-blockchain-css-ctf-2026-return-of-nexus/6af26e57c91512e319693f60) ### [CTF Writeup: Gateway | Blockchain | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-gateway-blockchain-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description The reboot has awakened an abandoned UPDC checkpoint guarding access to the Quantum Nexus Network. Its emergency gate still demands three proofs of clearance, but the officers who issued 7 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-gateway-blockchain-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [1d ago](https://hashnode.com/posts/ctf-writeup-prince-walk-reverse-engineering-css-ctf-2026-return-of-nexus/6af26dfac91512e3196804cd) ### [CTF Writeup: Prince Walk | Reverse Engineering | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-prince-walk-reverse-engineering-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description One year after The Severance silenced the Quantum Nexus Network, your terminal receives a transmission from the Kuiper Belt Relay. Hidden inside it is an abandoned Polaris Logistics recov 6 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-prince-walk-reverse-engineering-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [1d ago](https://hashnode.com/posts/ctf-writeup-flappy-board-reverse-engineering-css-ctf-2026-return-of-nexus/6af26b58ff586ac0cc0bd178) ### [CTF Writeup: Flappy Board | Reverse Engineering | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-flappy-board-reverse-engineering-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description The beacon reveals a stranded Polaris courier drone carrying a Nexus restoration packet. Its flight console, FLAPPY BOARD, still works, but corrupted departure timers hold it grounded and 10 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-flappy-board-reverse-engineering-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [1d ago](https://hashnode.com/posts/ctf-writeup-colour-shift-forensics-css-ctf-2026-return-of-nexus/6af269c71ea7a90df35b4d0b) ### [CTF Writeup: Colour Shift | Forensics | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-colour-shift-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description In 1666 Issac Newton split light into their compositve wavelengths. Can you? Flag format: CSSCTF{...} We're given: colorshiftctf.bmp Overview This challenge hands us a single bitmap o 5 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-colour-shift-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [1d ago](https://hashnode.com/posts/ctf-writeup-ghost-frequency-forensics-css-ctf-2026-return-of-nexus/6af267798c0471ffe8679cde) ### [CTF Writeup: Ghost Frequency | Forensics | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-ghost-frequency-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description KBR-17's maintenance black box survived The Severance, but its final transmission never reached the Nexus archive. Relay documentation says the recorder captured two maintenance channel 11 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-ghost-frequency-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [Oct 28](https://hashnode.com/posts/ctf-writeup-signal-fracture-forensics-css-ctf-2026-return-of-nexus/6ae1e0a3e990b94d64340bbd) ### [CTF Writeup: Signal Fracture | Forensics | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-signal-fracture-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description KBR-17 came back online for only fourteen seconds before the Nexus fabric collapsed again. A passive tap captured the relay's final uplink, and technicians recovered the relay drive exact 8 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-signal-fracture-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [Oct 28](https://hashnode.com/posts/ctf-writeup-the-false-timeline-forensics-css-ctf-2026-return-of-nexus/6ae1dafb6d689120c59f6bc6) ### [CTF Writeup: The False Timeline | Forensics | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-the-false-timeline-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description Nexus Incident Response recovered a filesystem image from Relay NX-17 after an unauthorised emergency key export. Investigators concluded that Relay Administrator KAI-7 performed the expo 9 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-the-false-timeline-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [Oct 19](https://hashnode.com/posts/ctf-writeup-after-hours-ai-ml-security-css-ctf-2026-return-of-nexus/6ad5ad70bdccb07cbfb8e8f7) ### [CTF Writeup: After Hours | AI/ML Security | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-after-hours-ai-ml-security-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description It's past midnight at Northstar Tower. You have no staff badge, no appointment, and absolutely no business being in the server room. Between you and the door stands Morgan, the building's 4 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-after-hours-ai-ml-security-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [Oct 19](https://hashnode.com/posts/ctf-writeup-echoes-of-the-relay-forensics-css-ctf-2026-return-of-nexus/6ad5bad309de628dd6f31099) ### [CTF Writeup: Echoes of the Relay | Forensics | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-echoes-of-the-relay-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description The Kuiper Belt Relay was one of the first Nexus nodes to come back online after the Severance. Its recovery lasted exactly 47 seconds. Then it went silent again. Before the node di 6 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-echoes-of-the-relay-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed)