Writeup for 3 Blockchain Challs in SekaiCTF 2024 2024-08-29 2024-09-29 Writeup I played in the SekaiCTF 2024 to learn something on blockchain and solved 3 out of 4 blockchain challenges (Play to Earn, ZOO, and survive), here’s the writeup. Read More »
Writeup for Tree and Lightbook in CrewCTF 2024 2024-08-07 2024-08-27 Writeup I played solo in the CrewCTF 2024 for fun and solved (all) 2 blockchain challenges, here’s the writeup. Read More »
Experience of a B2 Visa Interview in Wuhan: A Personal Account 2024-07-23 2024-07-23 Travel 美签B2武汉面签实录 Read More »
Always Should You Locally Generate and Sign Your Transaction — Here is Why 2024-04-06 2024-06-20 Blockchain An inherent security risk that I discovered within the remote RPC serialization endpoints of several emerging blockchains. Read More »
Analysis of CVE-2022-21449: Bypass Java’s ECDSA Signature Check by (0,0) 2022-04-29 2024-04-14 Cryptography Analyse CVE-2022-21449 by diving into the source code. Read More »
Notes on Black Hat USA 2021 Talk - Timeless Timing Attack 2022-04-18 2024-04-14 Notes Timing attack that turns infeasible into feasible. Read More »