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Wargames My 2023

Writeup for the challenges I solved in Wargames My 2023

ABOH 2023

Writeup for all the crypto challenges I solved in Apu Battle of Hackers 2023 (ASEAN Category).

ACSC 2023

Writeup for the challenges I solved in ACSC. I mainly focused on Crypto challenges.

Wargames My 2022

Writeup for the challenges I solved in Wargames My 2022

Sagemath Guide

Sagemath is a powerful mathematical tool that is built on top of python. It has a large community and have many convenient built-in math functions. I often u...

Swap on Curve

This is the fourth crypto challenge from ASCS 2021. It is an interesting question related to ECC.

CBCBC

This is the second crypto challenge from ASCS 2021. It tried to use double AES CBC to protect against padding oracle attack.

RSA stream

This is the first crypto challenge from ASCS 2021. It used Stream cipher with RSA to encrypt a message.

Space Noise

This is a challenge from Cryptography section of Standcon 2021. The challenge wants us to guess the encryption scheme

Ingenuity Installer

This is a challenge from Cryptography section of Standcon 2021. The challenge wants us to forge a signature of a zip file.