Writeup for the ASIS Primes RSA challenge from CryptoCTF 2025: abusing attacker-chosen primes and a faulty public exponent (e ^ 1) to decrypt the flag.
Writeup for Interpol from CryptoCTF 2025: recovering the flag from a Lagrange interpolation oracle that leaks characters through rational data points.
Writeup for Vainrat from CryptoCTF 2025: recovering an integer hidden inside a high-precision real number from an interactive oracle.
