deuterium Himanshu Sheoran's blog on tech, security, CTFs and cryptography

writeups

CTF Writeups

Himanshu Sheoran's cryptography and CTF writeups, including challenge files, mathematical derivations, exploit notes, and solve scripts.

CTF Writeups

61 posts
  1. Nullcon HackIM 2023 Crypto - Curvy Decryptor Writeups ECC
  2. ACSC qualifiers 2023 Crypto - SusCipher Writeups Solver
  3. Google CTF 2022 Crypto - Maybe Someday Writeups Crypto
  4. Cyber Apocalypse HTB 2022 Crypto - Memory Acceleration Writeups Solver
  5. SDCTF 2022 Crypto - Tasty Crypto Roll Writeups Solver
  6. Google CTF 2021 Crypto - Pythia Writeups Symmetric
  7. rgbCTF 2020 Crypto - N-AES Writeups Symmetric
  8. rgbCTF 2020 Crypto - Adequate Encryption Standard Writeups Symmetric