CTF Writeups

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CTF Challenge: CipherQR

Easy

Scan Me

CyberQuest 2025
forensics crypto

CTF Challenge: RustFixMe1

Easy

Have you heard of Rust? Fix the syntax errors in this Rust file to print the flag!

PicoCTF
programming misc

CTF Challenge: Information

Easy

Files can always be changed in a secret way. Can you find the flag?

PicoCTF
forensics cryptography

CTF Challenge: flagAreStepic

Medium

A group of underground hackers might be using this legit site to communicate. Use your forensic techniques to uncover their message

PicoCTF
forensics stego

TryHackMe Challenge: rootMe

Medium

A ctf for beginners, can you root me?

TryHackMe
reconnaissance web

PicoCTF Challenge: EvenRsaCanBeBroken

Easy

This service provides you an encrypted flag. Can you decrypt it with just N & e?

PicoCTF
crypto asymmetric rsa

PicoCTF Challenge: GDB Test Drive

Medium

Can you get the flag?

PicoCTF
debugging gdb rev

PicoCTF Challenge: GDB Baby Step1

Medium

Can you figure out what is in the eax register at the end of the main function?

PicoCTF
debugging gdb rev

PicoCTF Challenge: GDB Baby Step2

Medium

Can you figure out what is in the eax register at the end of the main function?

PicoCTF
debugging gdb rev

PicoCTF Challenge: ARMseembly4

Hard

What integer does this program print with argument 3459413018? File: chall_4.S Flag format: picoCTF{XXXXXXXX} -> (hex, lowercase, no 0x, and 32 bits. ex. 5614267 would be picoCTF{0055aabb})

PicoCTF
debugging arm rev

PicoCTF Challenge: More SQLi

Medium

Can you find the flag on this website.

PicoCTF
web slq login

PicoCTF Challenge: SQLiLite

Medium

Can you login to this website?

PicoCTF
web slqlite login

HackTheBox Lab: Responder

Easy

Remote File Inclusion and how to use Web/Reverse Shells.

HackTheBox
web RFI SSRF

HackTheBox Lab: Three

Easy

how to upload files to an S3 Bucket & web exploitation

HackTheBox
aws web shell

CTF Challenge: Operation Oni

Medium

Download this disk image, find the key and log into the remote machine.

PicoCTF
forensics disk ssh

CTF Challenge: ARMssembly 1

Medium

For what argument does this program print `win` with variables 83, 0 and 3?

PicoCTF
rev arm misp

CTF Challenge: ARMssembly 0

Medium

What integer does this program print with arguments 182476535 and 3742084308?

PicoCTF
rev arm misp

CTF Challenge: ARMssembly 2

Hard

What integer does this program print with argument 2403814618?

PicoCTF
rev arm misp