Password Cracking Challenge 4 - PPTX

Prompt

Cyber Command: We have a slide deck that’s been encrypted which could be holding some sensitive information, can you decrypt the slide deck and view its contents.

Answers

Q1 (30 pts) - What is the plaintext password for the slide deck?
jhonny1622

Q2 (20 pts) - What is the flag inside the slide deck?
SKY-PPTX-5030

Steps I Took

Looked up “PPTX cracker.” Found an article about extracting password hashes from Office files using office2john.

Ran office2john on the file to extract the hash.

Ran john with the rockyou wordlist to crack it. Left it running — it took about 2 days because I forgot about it. Came back and it had found the password: jhonny1622.

Opened the PPTX in LibreOffice with the password. The slide contained the flag: SKY-PPTX-5030.