Endolum CTF - hash-length-extension

Difficulty: easy Category : crypto Author : xnull Description : ### Signed API This API uses MD5 signatures to authenticate requests. You have a valid signature for 'user=guest', but you need admin access. The signature is created as MD5(secret + data), where the secret is unknown to you. **Hint:** The server expects data as a hex string. It does `bytes.fromhex(data)` to decode it. Don't convert…