hash-only-2 - picoCTF 2025 - Binary Exploitation

picoCTF 2025 capture the flag competition: hash-only-2 challenge in Binary Exploitation category - full solve walk-through. Building on the hash-only-1 solution and again using nothing but "strings" to uncover the exploit then abusing insecure permissions to give us the flag. Subscribe to my channel: https://www.youtube.com/@CatHomeLab?sub_confirmation=1 Watch This Next: hash-only-1 - https://youtu.be/mAjVkWLm7L8 My Blog: https://catalinionescu.com Github: https://github.com/drheat ________________ Now a question for you: What would YOU like to see next? Write your answer in the comments below. Most popular requests will be considered! #cybersecurity #homelab #ctf #capturetheflag #pentesting #virtualization #networking #ethicalhacking ⏰ Timestamps ⏰ 00:00 Challenge Overview 02:07 Old Exploit Blocked 03:13 Abusing Insecure Permissions ________________ What this channel is about: Exploring cybersecurity through hands-on home lab setups, CTF walkthroughs, and insights into pen-testing, virtualization and networking, making ethical hacking accessible and engaging for enthusiasts at every skill level. ________________ Affiliate Disclaimer: This video is NOT sponsored. Some product links are affiliate links which means if you buy something I will receive a small commission.