posts

2026

March

• Blockchain basic introduction part 2 March 29
• Blockchain basic introduction part 1 March 29
• Smart Contract Introduction March 25

2025

March

• ChaCha20-Poly1305 and Nonce reuse attack March 17

February

• Write up LACTF 2025 February 11

2024

October

• Write up ASCIS CTF 2024 - Crypto October 20

August

• Write up IDEK CTF August 19

July

• Write up CorCTFand DeadSecCTF July 29
• Invisible Salamanders in AES GCM and AES GCM SIV July 24
• AES GCM and AES GCM-SIV mode July 21
• AES - Advanced Encryption Standard July 9

May

• Write-up-Angstromctf-2024 May 29

April

• Write-up-AmateursCTF-2024 April 11