Writeup for She's the Real One from CTFZone 2024: solving a discrete logarithm over a real-number group law to recover the flag.
Writeup for Snails from CryptoCTF 2025: recovering an ECDSA private key from biased short nonces with a lattice (LLL) attack.
Writeup for Ikkyu San from CryptoCTF 2025: solving a discrete logarithm on a specially constructed elliptic curve over a 256-bit prime field.
Writeup for Sobata from CryptoCTF 2025: exploiting the special structure of an elliptic curve built from cube roots modulo p to solve a discrete log.
Writeup for Toffee from CryptoCTF 2025: forging a custom elliptic-curve signature by exploiting reused secret nonces.
