Custom CTF Challenges

This private repository stores all the CTF challenges that have been used in previous BYU Capture the Flag competitions. They are sorted by category, and include the description, files, and a writeup (with the flag).

Challenges

Category - CLI

Source Port (Winter 2022) - easy
If two witches would watch two watches, which witch would watch which watch (Winter 2022) - easy
More pain (Winter 2022) - medium
qrsh (Winter 2022) - medium

Category - Forensics/Steganography

Steganography

Incorrect (Fall 2021) - easy
Details (Fall 2021) - easy
Samus (Fall 2021) - easy
Pixecutable (Winter 2022) - easy
Janes Message (Fall 2022) - easy
Swimming Secret (Fall 2022) - easy
Sneaky (Fall 2022) - easy
Charlie the Fish (Winter 2023) - easy
Charlie the Fish 2 (Winter 2023) - easy
thetoymaker (Winter 2023) - easy
Wyatt P Memorial Watertower the Sequel
Cyber Risk (Fall 2021) - medium
Cyber Risk 2 (Fall 2021) - medium
steggiboi (Fall 2022) - medium
Bames Jond has Stronk (Winter 2023) - medium
Blue 3 (Winter 2022) - hard

Network Forensics

Packets (Fall 2021) - medium
Ding Dong (Winter 2022) - medium

Windows XP

Retro 1 (Fall 2021) - easy
Retro 2 (Fall 2021) - easy
Retro 3 (Fall 2021) - medium
Retro 4 (Fall 2021) - medium
Retro 5 (Fall 2021) - hard
Retro 6 (Fall 2021) - hard

Digital Files/Folders

Liam's Idea (Winter 2022) - easy
Shiny (Winter 2022) - easy
Access (Winter 2022) - medium
Leak Final (Fall 2022) - medium
緑 (Winter 2022) - hard
.bash_history (Fall 2021) - hard
Wordpress (Fall 2021) - hard
Routing (Fall 2021) - hard
zip (Fall 2022) - hard
PNG (Fall 2022) - hard
Kyuukon (Fall 2022) - hard

Winter 2023 Forensics Series

Challenge 1 (Winter 2023) - easy
Challenge 2 (Winter 2023) - easy
Challenge 3 (Winter 2023) - easy
Challenge 4 (Winter 2023) - medium
Challenge 5 (Winter 2023) - medium
Challenge 6 (Winter 2023) - hard

Other

Austenland (Fall 2021) - medium
Qool Raster (Winter 2022) - medium
Uncle Iroh (Fall 2022) - medium
Grayscale (Fall 2020, Winter 2021) - hard
dinOS (Fall 2022) - hard
Paleontology (Fall 2022) - extreme
Knots (Fall 2022) - extreme

Category - Jail

Predictodactyl (Fall 2022) - easy
Python Jail 1 (Fall 2021) - medium
Python Jail 2 (Fall 2021) - medium
Python Jail (Fall 2022) (Fall 2022) - medium
Python Jail 3 (Fall 2021) - hard
Python Jail 4 (Fall 2021) - hard

Category - Social Engineering / OSINT

Links (Winter 2021, Summer 2021) - easy
Cyber Warriors 1 (Fall 2021) - easy
Inside the Cyber Warrior #2 (Fall 2021) - easy
the man in the golden jacket (Winter 2023) - easy
CSA Conference (Winter 2023) - easy
I love to see the temple (Winter 2023) - easy
Cert (Summer 2021) - medium
Domain (Summer 2021) - medium
Were U At (Summer 2021) - medium
Y Not (Fall 2021) - medium
Okta? More like Okna (Winter 2022) - Medium
Monuments and Memes (Winter 2023) - medium
The OG MITM. (Winter 2023) - medium
Googlefu Crossword (Winter 2021) - hard
Everything is an OSINT problem if you try hard enough (Fall 2021) - hard
Magnum Opus (Winter 2022) - Insane

Social Media

Birthday (Summer 2021) - easy
Accounts (Summer 2021) - medium
BBB (Fall 2021) - medium

Image Location

Dang BYU Parking (Fall 2021) - easy
Natty (Winter 2022) - easy
NonSecurityClearance (Winter 2022) - easy
Killer view eh (Fall 2021) - medium
Abiteboul's Digits (Winter 2022) - Medium
Ode to Ye Olde Cougar Net (Fall 2021) - hard
Oh the roads you'll go (Fall 2021) - hard

Jonathan Jiles

In which you meet Johnny (Fall 2021) - easy
In which Johnny shares his feelings (Fall 2021) - medium
In which Johnny gets creative (Fall 2021) - easy
In which Johnny gets speed (Fall 2021) - hard
In which Johnny meets Physics (Fall 2021) - hard

Buckeye Billy

Buckeye Billy Birthday (Winter 2022) - Medium
Buckeye Billy Baggage (Winter 2022) - Hard/Insane

BYU OSINT

BYU OSINT Challenge #1 (Fall 2022) - medium
BYU OSINT Challenge #2 (Fall 2022) - medium
BYU OSINT Challenge #3 (Fall 2022) - easy
BYU OSINT Challenge #4 (Fall 2022) - easy
BYU OSINT Challenge #5 (Fall 2022) - hard
BYU OSINT Challenge #6 (Fall 2022) - medium
BYU OSINT Challenge #7 (Fall 2022) - medium

006 Series

006 I (Winter 2023) - easy
006 II (Winter 2023) - medium
006 III (Winter 2023) - medium

Winter 2023 Series

Category - Pentesting

Plain (Winter 2022) - medium
Awkward (Winter 2022) - hard
Disaster (Winter 2022) - extreme
mi6configuration 1 (Winter 2023) - medium
mi6configuration 2 (Winter 2023) - medium
mi6configuration 3 (Winter 2023) - medium

Category - Reverse Engineering

Stone moon (Winter 2022) - medium
C-Spring (Winter 2022) - medium
e (Fall 2022) - hard

Binary

Binary (Fall 2021) - easy
Arr (Fall 2021) - medium
Symbolless (Fall 2022) - medium
XOR (Fall 2021) - hard
Vorobouros (Fall 2022) - hard

Python

Python intro (Winter 2022) - very easy
Fun Fact (Winter 2022) - medium
Python VM (Fall 2022) - medium
Bad (Fall 2021) - hard

JavaScript

Don't Get Phished (Fall 2022) - easy
Windows XP (Winter 2022) - medium
Uglified (Fall 2022) - medium
Web Bad (Fall 2021) - hard

Category - Signal (SIGINT)

Sig 1 (Summer 2021, Fall 2021) - hard
Sig 2 (Summer 2021, Fall 2021) - hard
Sig 3 (Summer 2021, Fall 2021) - hard
Sig 4 (Summer 2021, Fall 2021) - extreme

On The Job Series

On The Job 1 (Winter 2023) - easy
On The Job 2 (Winter 2023) - easy
On The Job 3 (Winter 2023) - easy
On The Job 4 (Winter 2023) - medium
On The Job 5 (Winter 2023) - medium
On The Job 6 (Winter 2023) - medium

Category - Trivia

Trivia 1 - Dr. Lunt (Winter 2022) - easy
Trivia 2 - Backpack (Winter 2022) - easy
Trivia 3 - Fives (Winter 2022) - medium
Trivia 4 - CTF Group Plug (Winter 2022) - easy
Trivia 5 - Ancient Secrets (Winter 2022) - medium
Trivia 6 - Lesser Known Giant (Winter 2022) - medium
Trivia 7 - 543 Bitcoins worth (Winter 2022) - easy
Trivia 8 - Shields up! Present-day Captain America (Winter 2022) - easy

Category - Unredact

Unredact Word (Winter 2022) - easy
Unredact PDF (Winter 2022) - easy
Obfuscationnn (Winter 2022) - easy
GIMP (Winter 2022) - medium
Pixels (Winter 2022) - medium
Reconstruct (Winter 2022) - hard

BYU-CSA/old-ctf-challenges