ctf - null

ctf

HTB Write-up | FormulaX (user-only)

Write-up for FormulaX, a retired HTB Linux machine.

ctf

HTB Write-up | Blazorized (user-only)

Write-up for Blazorized, a retired HTB Windows machine.

ctf

HTB Write-up | iClean (user-only)

Write-up for iClean, a retired HTB Linux machine.

ctf

HTB Write-up | Vessel (user-only)

Write-up for Vessel, a retired HTB Linux machine.

wordpress

HTB Write-up | Paper

Write-up for Paper, a retired HTB Linux machine.

ctf

ØxOPOSɆC | Neuromancer

This month, I was responsible for putting together the ØxOPOSɆC monthly challenge. Even though the competition is done, if you want to try it out yourself the application is still available here. So, if you don't want spoilers, stop reading! Onto the solutions!The challenge consisted of a Heroku app

crypto

ØxOPOSɆC | Underground Leaks (Crypto)

Write-up for retired Oposec's October challenge

crypto

HTB Crypto Challenge | Bank Heist

Write-up for retired HTB crypto challenge that involves Multi-tap code and Atbash Cipher.

sstv

ØxOPOSɆC Summer Challenge 2020 | Misc Challenges Write-up

1 . My Paste | 100Oh no! I forgot where I left my paste. 🗑 Perhaps you can help me find it?The source code has a little hidden clue: <span class="challenge-desc"><br> Oh no! I forgot where I left my paste. 🗑 <p>Perhaps you can

tap code

ØxOPOSɆC Summer Challenge 2020 | Crypto Challenges Write-up

Knock Knock (100)21 31 11 22 { 32 11 44 15 45 43 42 34 43 15 }If I had known about Tap Code (aka Knock Code) this would have been straightforward. I ended up getting the flag with some "leaps of logic". Basically, by knowing that the first 4

web

ØxOPOSɆC Summer Challenge 2020 | Web Challenges Write-up

Passive-Aggressive Flask (100)I can give you a flag, but you'll have to be nice. Remember to say it LOUD, so I can hear you. https://passiveaggressive.apl3b.com~ curl https://passiveaggressive.apl3b.com <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"

web-assembly

Web Assembly CTF Write-up

Banner source: https://medium.com/trainingcenter/webassembly-a-jornada-o-que-%C3%A9-wasm-75e3f0f03124 I'm been trying to get into Web Assembly for a while, so when I found this CTF write-up by Chiam YJ I decided to give it a try. The original Challenge<!DOCTYPE html> <html> <head>

cryptography

ØxOPOSɆC Crypto Challenges 2019

Write-up for ØxOPOSɆC crypto challenge that involves AES in CTR mode.