flare-on - All things reversed

All things reversed

flare-on

A collection of 7 posts

Flare-on 2022 - in a tweet + images

Flare-on is a yearly competition that focuses on reverse engineering. In 2022 we could compete in the 9th edition solving 11 challenges. Here's a really, really short version how we could approach and solve them.

Flare-On 8 - Flare VM

Flare-On 8 - Flare VM

Because of your superior performance throughout the FLARE-ON 8 Challenge, the FLARE team has invited you to their office to hand you a special prize! Ooh – a special prize from FLARE ? What could it be? You are led by a strong bald man with a strange sense of humor into

Flare-On 8 - known

Flare-On 8 - known

We need your help with a ransomware infection that tied up some of our critical files. Good luck. With the second challenge, it's a bit step up in the difficulty. We are given an EXE with some files (different types; images images and text) that has been encrypted. Opening file

Flare-On 8 - credchecker

The first task in this year competition. It is a single HTML file. Inside we can find a simple check for credentials. function checkCreds() { if (username.value == "Admin" && atob(password.value) == "goldenticket") { var key = atob(encoded_key); var flag = ""; for (let i = 0; i < key.length; i++) { flag += String.fromCharCode(

Flare-On 8 - Beelogin

Flare-On 8 - Beelogin

In this challenge we are given a huge, 3.10 MB html file. Opening it, we can see there's a HTML form, and a lot of JavaScript. A lot. It's obfuscated too. Looking closer, it appears that it contains mostly the garbage and only some parts are relevant. From the

Flare-On 8 - Pet the Kitty

Flare-On 8 - Pet the Kitty

Hello, Recently we experienced an attack against our super secure MEOW-5000 network. Forensic analysis discovered evidence of the files PurrMachine.exe and PetTheKitty.jpg; however, these files were ultimately unrecoverable. We suspect PurrMachine.exe to be a downloader and do not know what role PetTheKitty.jpg plays (likely a second-stage

Flare-On 2019 solutions/notes (upd. 11.02)

Flare-On 2019 solutions/notes (upd. 11.02)

I'm well aware that there's multiple write-ups/solutions presenting 2019's Flare-On solutions but I've decided to provide my own for two reasons. Firstly, to have some notes I can easily find for future. Secondly, I think some of my solutions were non-standard so it might be useful in some other