I played the Sonic Jailbreak hackathon with @yanhui. Only one team that completed all challenges could receive half of the prize (total 55,000 S tokens). We expected a lot of competition, but we we...

This post can be also found in Project Sekai blog :D I participated in bi0s CTF this week as part of Project Sekai, solved all blockchain challenges with my teammate @yanhui. Overall, the qual...

As a member of Project Sekai, I authored 3 challenges. Working with mixy and Immunefi onsite was a very rewarding experience for me. The ETH Escape CTF is hosted by Ethereum Foundation ⚔ immune...

I played blaz CTF as KimchiPremium, had a lot of fun with the awesome kimchi hackers Chisel as a Service Chisel as a Service Mina just develops a highly robust Solidity sandbox! Connect to...

I made solidity assembly challenge in sekai ctf 2024. ended up with 13 solves. you can check the detail here ZOO welcome to assembly zoo There are two functions, fallback and commit (intern...

It was first time for me to solve move based challenge. Solved 3 blockchain challenges, World of Ottercraft, The Otter Scrolls, Dark BrOTTERhood ( all move based challenge ) The Otter Scrolls Al...

web3 newbie’s solver for SafeBridge in rwctf 2024 Objective Drain the BRIDGE (L1ERC20Bridge) of its WETH balance. Setup The challenge setup is using the challenge.py file, with relayer.py also ...

corCTF twitter participated with cat :flag_kr: and placed 3rd blockchain/baby-wallet (24 solves) //SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.17; // 100 ether contract BabyWall...

oldschool Analyzing the logic, there is a condition that when password is made into a 5x5 matrix and matrix multiplication is performed with a 5x5 matrix made using id after sbox, xor, and shift ro...

Date: June 12, 2023 rank: 1 team: ProjectSekai It’s the first writeup since joining the ProjectSekai. I joined the second day after CCE (local ctf organized by NIS). I took some reversing and smar...