Crypto CTF 2023
55 challenges with 97 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 CTFtimeCryptography29
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.
Resuction
7 official solutionsAlso written up in: a-p-n/CTF-solutions, AKSLEGION/Crypto-Writeups, zukash/ctf-writeup, zukash/ctf-writeup, zukash/ctf-writeup, zukash/ctf-writeup, zukash/ctf-writeup
Also written up in: AKSLEGION/Crypto-Writeups, AKSLEGION/Crypto-Writeups, zukash/ctf-writeup, zukash/ctf-writeup
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Also written up in: daffainfo/ctf-writeup, zukash/ctf-writeup, zukash/ctf-writeup
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Suction
4 official solutionsAlso written up in: AKSLEGION/Crypto-Writeups, AKSLEGION/Crypto-Writeups, zukash/ctf-writeup, zukash/ctf-writeup
Also written up in: a-p-n/CTF-solutions, zukash/ctf-writeup
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Derik
3 official solutionsAlso written up in: a-p-n/CTF-solutions, zukash/ctf-writeup, zukash/ctf-writeup
Also written up in: AKSLEGION/Crypto-Writeups, a-p-n/CTF-solutions
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Also written up in: AKSLEGION/Crypto-Writeups, zukash/ctf-writeup
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Also written up in: AKSLEGION/Crypto-Writeups, zukash/ctf-writeup
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Also written up in: AKSLEGION/Crypto-Writeups
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Also written up in: AKSLEGION/Crypto-Writeups
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Also written up in: a-p-n/CTF-solutions, zukash/ctf-writeup
Secret
2 official solutionsAlso written up in: google/google-ctf, sajjadium/ctf-archives
AncientEncodings
1 official solutionAlso written up in: twc1rcle.com
Also written up in: zukash/ctf-writeup
ASIv.mod
1 official solutionAlso written up in: zukash/ctf-writeup
ASIv2
1 official solutionAlso written up in: zukash/ctf-writeup
Cyber Jawara 2023 Qual
1 official solutionAlso written up in: zakigeyan.github.io
Also written up in: zukash/ctf-writeup
Esaip Ctf All Crypto Challenges
1 official solutionAlso written up in: ret2school/ctf
Htb Cyber Apocalypse
1 official solutionAlso written up in: cryptocat.me
HTB Cyber Apocalypse 2023
1 official solutionAlso written up in: forensicskween.com
IrisCTF 2023
1 official solutionAlso written up in: thesavageteddy.github.io
Perfect Syncronization
1 official solutionAlso written up in: cryptocat.me
PerfectSynchronization
1 official solutionAlso written up in: twc1rcle.com
PwnMe Quals 2023
1 official solutionAlso written up in: forensicskween.com
Resuction.Mod
1 official solutionAlso written up in: zukash/ctf-writeup
SmallStEps
1 official solutionAlso written up in: twc1rcle.com
Suction.Mod
1 official solutionAlso written up in: zukash/ctf-writeup
Uncategorised26
The upstream scoreboard did not say, so neither do we.
Also written up in: google/google-ctf, google/google-ctf, google/google-ctf
Chall
2 official solutionsAlso written up in: woodjooe/CTF-Writeups, woodjooe/CTF-Writeups
Prob 09
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Prob 10
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Prob 10 1
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Prob 10 2
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Prob 10 6
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Prob 10 7
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Prob 10 8
2 official solutionsAlso written up in: atuc17/CTF, atuc17/CTF
Server
2 official solutionsAlso written up in: google/google-ctf, m1dm4n/CTF-WriteUp
Source
2 official solutionsAlso written up in: a-p-n/CTF-solutions, a-p-n/CTF-solutions
Cipher Vault
1 official solutionAlso written up in: sp0ttybug/CTF-Writeups
Client
1 official solutionAlso written up in: google/google-ctf
Code Heist
1 official solutionAlso written up in: sp0ttybug/CTF-Writeups
Config
1 official solutionAlso written up in: google/google-ctf
Decrypt
1 official solutionAlso written up in: AKSLEGION/Crypto-Writeups
Decrypt 2
1 official solutionAlso written up in: AKSLEGION/Crypto-Writeups
Healthcheck
1 official solutionAlso written up in: google/google-ctf
Also written up in: google/google-ctf
Prob 10 3
1 official solutionAlso written up in: atuc17/CTF
Prob 10 4
1 official solutionAlso written up in: atuc17/CTF
Prob 10 5
1 official solutionAlso written up in: atuc17/CTF
Romeo And Juliet
1 official solutionAlso written up in: m1dm4n/CTF-WriteUp
Semaphore
1 official solutionAlso written up in: m1dm4n/CTF-WriteUp
Solve2
1 official solutionAlso written up in: a-p-n/CTF-solutions
The Secure Comms Breach
1 official solutionAlso written up in: sp0ttybug/CTF-Writeups