This was my first time getting first blood with my team, so I’m excited to write it up. OSINT challenges have a lot of collaboration opportunities, and our first blood was due to some good teamwork.
Challenge Description: Can you help me find the full name of the person behind the alias “anonhunter26”? This link might be helpful: https://osintframework.com/ Submit flag as osu{firstname_lastname}
Looks like we’ve got to track someone down given their username. Before doing anything, I checked for a twitter account. The bio states that our target is a “Senior software developer at a small startup.” Looks like finding the company might be our secondary goal. Scrolling through the rest of the account, we see reference to a “coworker and good friend” whose handle is @hatebav2ropc. Neither of these accounts follow or are followed by anyone, and their likes are relevant to infosec but not helpful in identification.
Looks like “hatebav2ropc” might give us a clue, though, so let’s gather some information. https://whatsmyname.app/ shows that hatebav2ropc exists on GitHub. There is only one repository, with two commits. Clicking on a commit and adding “.patch” to the URL gives patch information.
From b8e908c74c182c73d840192cd89d3f27b5177641 Mon Sep 17 00:00:00 2001
From: Anonymous <anonymousfreak32@gmail.com>
Date: Fri, 24 Sep 2021 23:57:15 -0700
Subject: [PATCH] Fixed line formatting
We’ve got an email! Looking at it with https://tools.epieos.com/email.php shows that the account belongs to someone named Gabriel Cortney.
Using Twitter search for “Gabriel Cortney” reveals a more professional Twitter account, whose bio states that Cortney is a “Lead security analyst for @opticalsocial.” The company’s Twitter account is followed only by Cortney and a man claiming to be the CEO. We’re looking for a senior software developer, so we might take our new information back to Github.
Searching for “opticalsocial” on Github gives us one user in the results: Oswald Denman, a senior software developer.
Submitting the flag osu{Oswald_Denman} is a success!
