So there was a password protected zip file, which I used this [password cracker site](https://passwordrecovery.io/zip-file-password-removal/) to find the password of the zip file.


Using the password `1337h4x0r`, unzip the zip file to get a password protected pdf file, which I used pdfcrack to crack the password which turned out to be `noobmaster`.


Opening the pdf file gives flag.


Flag: `n00bz{CR4CK3D_4ND_CR4CK3D_1a4d2e5f}`

Original writeup (https://jp-ch.gq/forensics/n00bzCTF-2023.html#crack--crack).