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

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CTF Writeups

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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
  9. 0CTF/TCTF 2020 Crypto - babyring Writeups Symmetric
  10. Redpwn 2020 Crypto - worst_pw_manager Writeups Symmetric
  11. Redpwn 2020 Crypto - Pseudo-key Writeups Classical
  12. Redpwn 2020 Crypto - primimity Writeups RSA
  13. Redpwn 2020 Crypto - Itsy Bitsy Writeups Crypto
  14. Redpwn 2020 Crypto - base646464 Writeups Encoding
  15. Redpwn 2020 Crypto - Alien Transmissions v2 Writeups Solver
  16. Redpwn 2020 Crypto - 4k-rsa Writeups RSA
  17. Redpwn 2020 Crypto - 12 Shades of Redpwn Writeups Crypto
  18. zh3r0 2020 Crypto - gboad maddy Writeups Crypto
  19. zh3r0 2020 Crypto - We are related Writeups RSA
  20. zh3r0 2020 Crypto - Uncipher Me Writeups RSA
  21. zh3r0 2020 Crypto - RSA warmup Writeups RSA
  22. zh3r0 2020 Crypto - Mix Writeups Encoding
  23. zh3r0 2020 Crypto - Hastads Message Writeups RSA
  24. zh3r0 2020 Crypto - Double Fish Writeups Symmetric
  25. zh3r0 2020 Crypto - Analyze Me Writeups Classical
  26. Nahamcon 2020 Crypto - elsa4 Writeups Crypto
  27. Nahamcon 2020 Crypto - Unvreakable Vase Writeups Encoding
  28. Nahamcon 2020 Crypto - Twinning Writeups RSA
  29. Nahamcon 2020 Crypto - Raspberry Writeups RSA
  30. Nahamcon 2020 Crypto - Oo la la Writeups RSA
  31. Nahamcon 2020 Crypto - Homecooked Writeups Encoding
  32. Nahamcon 2020 Crypto - Docxor Writeups Crypto
  33. Nahamcon 2020 Crypto - December Writeups Symmetric
  34. RACTF 2020 Crypto - Really Speedy Algirithm Writeups RSA
  35. RACTF 2020 Crypto - Really Small Algorithm Writeups RSA
  36. RACTF 2020 Crypto - Really Simple Algorithm Writeups RSA
  37. RACTF 2020 Crypto - Really Secret Algorithm Writeups RSA
  38. RACTF 2020 Crypto - Mysterious Masquerading Message Writeups Encoding
  39. RACTF 2020 Crypto - Its as easy as access=0000 Writeups Symmetric
  40. RACTF 2020 Crypto - BOO7l3G CRYP70 Writeups Crypto
  41. RACTF 2020 Crypto - B007L36 CRYP70 A641N Writeups Crypto
  42. RACTF 2020 Crypto - 06 Writeups Classical
  43. RACTF 2020 Crypto - 05 Writeups Classical
  44. RACTF 2020 Crypto - 04 Writeups Classical
  45. RACTF 2020 Crypto - 03 Writeups Classical
  46. RACTF 2020 Crypto - 02 Writeups Classical
  47. RACTF 2020 Crypto - 01 Writeups Classical
  48. BATPWN 2020 Crypto - Prefixes Writeups Crypto
  49. BATPWN 2020 Crypto: M-ick Maybe Writeups Classical
  50. BATPWN 2020 Crypto - Cryptographer Writeups Crypto
  51. HSCTF 2020 Misc - N95 Writeups Crypto
  52. HSCTF 2020 Crypto - XKCD 2247 v2 Writeups Crypto
  53. HSCTF 2020 Crypto - XORed Writeups Crypto
  54. HSCTF 2020 Crypto - Unexpected Writeups RSA
  55. HSCTF 2020 Crypto - Smol E Writeups RSA
  56. HSCTF 2020 Crypto - Randomization 2 Writeups Crypto
  57. HSCTF 2020 Crypto - Randomization 1 Writeups Crypto
  58. HSCTF 2020 Crypto - Morbid Writeups Classical
  59. HSCTF 2020 Crypto - Extremely Complex Challenge Writeups ECC
  60. HSCTF 2020 Crypto - Chonky E Writeups RSA
  61. HSCTF 2020 Crypto - Affina and the quadratics Writeups Classical