Hacker101 Encrypted Pastebin

, it can still be vulnerable to SQL injection if that data is decrypted and used in a database query without proper sanitization. How to Approach the Challenge

If you modify even one byte of the encrypted URL parameter, the server might return a specific error if the resulting "decrypted" data doesn't have valid padding. This is the smoking gun for a Padding Oracle Attack Breaking Down the Flags Flag 0: Playing with the URL hacker101 encrypted pastebin

fetch('https://your-backend-url.com/pastes', method: 'POST', headers: 'Content-Type': 'application/json', body: JSON.stringify( encryptedText, keyHash ), ).then(response => response.text()).then(pasteUrl => console.log(pasteUrl)); , it can still be vulnerable to SQL