Girls-in-CTF Writeup - Forensics & AI

Introduction To encourage and celebrate women/girls in cyber security, Re:Hack has organized this girls-only-CTF. As a woman, I really appreciate this effort and it feels incredibly inspiring. This is the first time that myself see so many girls and women gather in one place and all are incredibly passionate about this very technical field. So, I would like to give a very special thank-you to the organizers and all the challenge writers involved to make this sort of event possible. ...

September 18, 2025

ScriptCTF Writeup - Forensics

pdf (Author: Connor Chang) Description: so sad cause no flag in pdf The challenge attachment can be found here: https://github.com/scriptCTF/scriptCTF2025-OfficialWriteups/blob/main/Forensics/pdf/attachments/challenge.pdf For this challenge, you can open up Firefox to view the hint in the given PDF, but for this approach, we won’t need to use it. All we have to do is using binwalk binwalk -e challenge.pdf In the extracted folder, click on (or cat) the text file (11B or something similar), the flag is in there ...

September 12, 2025

Recover corrupted USB in Linux terminal (required complete data wipe)

Step 1 lsblk The USB would likely to be something like sda or sdb (the same name with number is a partition). The easiest way to figure out which is your thumb drive is the size. Step 2 If the system mount any of your partition, you need to unmount them first before wiping. # Replace sdX1 with your actual partition identifier (e.g., sdb1) sudo umount /dev/sdX1 Step 3 Use wipefs command to completely erase all partition tables and filesystem signatures from the drive. ...

September 11, 2025