An exciting web challenge involving a file write vulnerability through upload functionality and authentication bypass using sha.js hash rewinding attack. A deep dive into exploiting CVE-2025-9288 in sha.js library.

In Dumbledore's absence, Harry's memory fades, leaving crucial words lost. Delve into the arcane world, harness the power of JSON, and unveil the hidden spell to restore his recollection. Can you help harry yo find path to salvation?