2016from public repositories
Ncl Ctf Preseason 2016
15 challenges with 15 published solutions between them. CTFtime has no listing for this event at all, so nothing built on CTFtime can show what it was made of. These writeups were found in public repositories instead. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised9
The upstream scoreboard did not say, so neither do we.
Browser History Analysis 230
1 official solutionNginx History Analysis 260
1 official solutionPandoras Box 480
1 official solutionSquid Proxy Log Analysis 300
1 official solutionTraffic Analysis DNS 100
1 official solutionTraffic Analysis FTP 160
1 official solutionTraffic Analysis HTTP 1 100
1 official solutionTraffic Analysis HTTP 2 180
1 official solutionTraffic Analysis Telnet 100
1 official solution
Cryptography4
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 decoderVigenere cipher solver with automatic key recoveryRSA decryption and attack runnerWiener’s attack on small RSA private exponentsIn-browser hash cracker with rule transformsLearn: Classical ciphers and frequency analysisLearn: RSA and the parameters that break it
Passwords 1 45
1 official solutionPasswords 2 25
1 official solutionPasswords 3 25
1 official solutionPasswords 4 35
1 official solution
OSINT2
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
Email Header Analysis 65
1 official solutionThreat Intel Report 75
1 official solution