2022weight 16.93VU Cyberthon
VU CYBERTHON 2022
2 challenges with 2 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 CTFtimeWeb1
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 verifierJWT alg=none bypass generatorWeb attack payload catalogJWT secret brute forceLearn: Web attacks and session tokens
- php
- crc
- crypto
- reversing
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 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 bytesMagic byte and file signature tablePCAP analyzer for CTF network forensicsEXIF metadata viewerLearn: File forensics and carvingLearn: Network forensics
- forensic+crypto
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions