Cusp_of_No_Return

cusp-of-no-return.md The curve survived. Its marking did not.

Our archivist kept a finite shadow of a punctured elliptic curve, two arithmetic symmetries, and several recollections of the same missing cusp. Every recollection was based somewhere else. Every orientation was forgotten.

Recover the isogeny. There is no return address.

Your challenge instance is generated per deployment — download instance.json from your running instance.

Flag format: pwnsec{...}.

@Curiosity