2023weight 24.52Competitive Cyber at Mason

PatriotCTF 2023

12 challenges with 12 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.

Full task list on CTFtime

Misc7

Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.

Solve it with:Brainfuck and esolang decoder Cipher identifier and automatic decoder Regex tester with match offsets and capture groups Learn: Recognising encodings

Checkmate
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Flower Shop
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
ML Pyjail
391 pts1 writeup
- misc
- machine_learning
Same technique in picoCTF: Permissions, Specialer, Codebook
python-garbage-compiler
368 pts1 writeup
Same technique in picoCTF: PW Crack 1, PW Crack 2, PW Crack 3
reduced-reduced-instruction-set-1
487 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
reduced-reduced-instruction-set-2
495 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
softshell
494 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook

Web2

Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.

Solve it with:JWT decoder and signature verifier JWT alg=none bypass generator Web attack payload catalog JWT secret brute force Learn: Web attacks and session tokens

One-for-all
488 pts1 writeup
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
Scavenger Hunt
100 pts1 writeup
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3

Cryptography1

Recover a plaintext or a key from something that was supposed to protect it. In practice: identify the scheme, find the parameter the author got wrong, exploit it.

Solve it with:Cipher identifier and automatic decoder Vigenere cipher solver with automatic key recovery RSA decryption and attack runner Wiener’s attack on small RSA private exponents In-browser hash cracker with rule transforms Learn: Classical ciphers and frequency analysis Learn: RSA and the parameters that break it

My phone! (Funny-writeups)
349 pts1 writeup
- cryptography
- osint
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC

Binary exploitation1

Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.

Solve it with:ROP gadget finder Shellcode assembler and library Cyclic pattern generator and offset finder Format string exploit builder Learn: Binary exploitation

guessinggame
100 pts1 writeup
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3

Forensics1

Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.

Solve it with:File type identifier by magic bytes Magic byte and file signature table PCAP analyzer for CTF network forensics EXIF metadata viewer Learn: File forensics and carving Learn: Network forensics

Capybara
100 pts1 writeup
- forensic+crypto
- steganography
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions

Misc7

Checkmate

Flower Shop

ML Pyjail

python-garbage-compiler

reduced-reduced-instruction-set-1

reduced-reduced-instruction-set-2

softshell

Web2

One-for-all

Scavenger Hunt

Cryptography1

My phone! (Funny-writeups)

Binary exploitation1

guessinggame

Forensics1

Capybara

Other 2023 events