2018weight 66.750ops, eee, Keenlab

0CTF/TCTF 2018 Finals

5 challenges with 6 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

Misc3

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

freenote2018
2 writeups
Same technique in picoCTF: Permissions, Specialer, Codebook
Proof of Work
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
vtp2
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook

Web1

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

h4x0rs.date
600 pts1 writeup
- xss
Same technique in picoCTF: notepad, noted, Client-side-again

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

h4x0rs.club pt.3
600 pts1 writeup
- mysql
- pwnable
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3

Misc3

freenote2018

Proof of Work

vtp2

Web1

h4x0rs.date

Binary exploitation1

h4x0rs.club pt.3

Other 2018 events