Posts tagged with "ctf" | enscribe.dev

A Hackable Unity Implementation of Project Sekai’s Gacha System

I created a fully functional, hackable replica of Project Sekai’s gacha system for SekaiCTF 2023. This was my design process.

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August 15, 2023
25 min read

ctf reverse unity game-hacking
Guessing 617-digit Integers with the Chinese Remainder Theorem

AmateursCTF 2023’s “gcd-query” algorithm challenge forced me to guess 2048-bit integers provided with only its GCDs. Here’s how I did it.

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July 24, 2023
10 min read

ctf ppc algorithm
“WannaFlag” Series: Hunting Down a CTF Ransomware Group

Hunting down a flag-stealing ransomware group from WolvCTF 2023 with the power of OSINT——from Ethereum breadcrumbs to TF2 workshop maps.

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March 17, 2023
13 min read
5 subposts

ctf osint compilation
“Matchmaker”: Edmonds’ Algorithm for Maximum Weighted Matching

During MHSCTF 2023, I utilized Edmonds’ beautifully crafted “Blossom algorithm” to solve a maximum weighted matching problem.

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February 14, 2023
13 min read

ctf ppc algorithm
“NMPZ” (No Moving, Panning, or Zooming), a GeoGuessr Challenge

“No moving, panning, or zooming”—a GeoGuessr-esque OSINT challenge testing geographical literacy from idekCTF 2022*.

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January 15, 2023
28 min read

ctf osint geoint
SekaiCTF 2022: Forensics Writeup Compilation

An organizer-written writeup compilation for selected forensics challenges from the SekaiCTF 2022 capture-the-flag competition.

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November 28, 2022
13 min read
6 subposts

ctf forensics compilation
Hacky Holidays 2022: “Port Authority,” a WebSocket Game

Deloitte’s Hacky Holidays 2022 event featured “Port Authority,” a WebSocket strategy game that challenges you to dock a chaotic port full of ships.

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July 27, 2022
12 min read
5 subposts

ctf ppc
PicoCTF 2022: “Buffer Overflow” Series

A comprehensive walkthrough of the picoCTF 2022 buffer overflow challenges, exploring stack-based exploitation techniques and binary security fundamentals.

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June 16, 2022
12 min read
4 subposts

ctf pwn buffer-overflow
BYUCTF 2022: OSINT Compilation

We were the only team of 435 to solve all 9 OSINT challenges from BYUCTF 2022. This was the process that led us to victory.

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May 28, 2022
14 min read
9 subposts

ctf osint compilation
Space Heroes CTF: Writeup Compilation

Learn brute-forced format string attacks, blind buffer overflows, and return-oriented programming in this writeup compilation from Space Heroes CTF.

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April 6, 2022
10 min read
4 subposts

ctf pwn buffer-overflow compilation