Corrupted File ~ Traboda Forensic Challenge Write up

Intro to Traboda : Traboda is an Cybersecurity Edutech from which provides 200+ challenges from various categories and competitions with difficulty ranging from beginners to experts.

Challenge Description : Reshma thinks there is some issue with this file. Can you help Reshma in fixing the issue with this file?

Flag Format : flag{some_l33t_string}

Challenge Link :

We are given a zip folder named chall. At first we wont be able to extract/view the contents in this zip folder. To fix this issue and get more information about this folder we will be using a tool named GHex which helps us to view and edit the hex data or hex dump of an image/data.We can also see the headers, footers, and the data chunks of a data.

We can use this tool by using the command


On executing this command , we shall the following window on our screen

In the Right column , we can see a text

Here is the secret information: ZmxhZ3s5ZTM2MDA4NDE5NmEwOTJhMTVjNWM0NGI1NDkzNGJmY30=

We can say that the 2nd part of the above string is a base64 string , which can be decoded through

echo 'ZmxhZ3s5ZTM2MDA4NDE5NmEwOTJhMTVjNWM0NGI1NDkzNGJmY30=' | 
base64 --decode

The Required flag is flag{9e360084196a092a15c5c44b54934bfc}

  1. GHex
$ sudo apt install ghex





Love podcasts or audiobooks? Learn on the go with our new app.

The Moon is Only the Beginning

Net-Tech President Explains Cutting-Edge Cyber Concerns

InfoSecSherpa’s News Roundup for Monday, April 25, 2022

How to Think Like a Hacker

Configure OIDC Federated Identity Provider Initiated Logout in WSO2 IS with Keycloak

{UPDATE} Slime it! Hack Free Resources Generator

InfoSecSherpa’s News Round Up for Thursday, January 6, 2022

Image by 1778011 from Pixabay


Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Srikesh Ravikumar

Srikesh Ravikumar


More from Medium

CS371p Spring 2022 Wk3: Cristian Astorga

AI+X : final project

Program Comprehension

Princess Diana’s Revenge Dress