DNS reconnaissance

Nullcon HackIM CTF Goa 2026 – Zoney

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Category: Misc (DNS / Recon) Difficulty: Medium 1. Challenge Overview The challenge provided a DNS server at 52.59.124.14:5054 for the domain flag.ctf.nullcon.net. The author hinted that the flag was hidden and challenged me to “show that I know all about DNS.” 2. Vulnerability Analysis Step 1: Initial Reconnaissance I started by checking for the flag … Read more

Nullcon HackIM CTF Goa 2026 – DiNOS

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Category: DNS / Misc Difficulty: Medium 1. Challenge Overview The challenge provided a custom DNS server (52.59.124.14:5052) with the hint: “Some flag escaped its enclosure. Now it is mixed up with the herd(dinos.nullcon.net).” The goal was to locate the flag hidden within a large number of DNS records. 2. Vulnerability Analysis Step 1: Initial Connectivity … Read more