Exploiting smart contracts in HackTM 2023 CTF Quals
This CTF had two smart contract challenges, Dragon Slayer and Diamond Heist.
Posts by Category
CTF
Grey Cat The Flag Qualifiers 2022
This CTF was the qualifying round for Grey Cat The Flag 2022, hosted by the National University of Singapore (NUS). Under the name ItzyBitzySpider, I partici...
DSO-NUS CTF 2021
A local Singaporean CTF hosted by DSO National Laboratories and the National University of Singapore (NUS). I played this CTF with my regular teammate, @Ocea...
Stack the Flags 2020
A local Singaporean CTF hosted by GovTech, where we managed to place 3rd under the name ItzyBitzySpider. I participated in this CTF with my regular teammates...
Cyberthon 2020
A local Singaporean CTF organized by HCI for JC students, in collaboration with DCO and CSIT. I participated with my teammates in ItzyBitzySpider, under the ...
HATS CTF
Some writeups for an internal CTF hosted by some seniors in HATS SG. Managed to place first in the end, which I’m quite happy about.
Timisoara CTF 2019 Qualifiers
An online international CTF competition for high-school students. I played with my regular teammates in ItzyBitzySpider under the name acsii. We managed to g...
Blog
A year of Competitive Audits
A look into audit contests from the eyes of a competitive auditor in 2023.
Foundry Cheatsheet
A cheatsheet for commonly used commands and cheatcodes in Foundry.
CVE-2022-22010
Microsoft Media Foundation CQTTrack::CreateChildAtom Information Disclosure Vulnerability (mfmp4srcsnk.dll)
CVE-2022-21977
Microsoft Media Foundation Unchecked Size Vulnerability (mfmp4srcsnk.dll)
CVE-2021-33760
Microsoft Media Foundation Information Disclosure Vulnerability (mfsrcsnk.dll)
Projects
Substitution Cipher Decryption with Genetic Algorithms
This project uses Genetic Algorithms to decrypt substitution ciphers by frequency analysis.