2019from public repositories

Nsctf 2019

3 challenges with 12 published solutions between them. The writeups for this event were found in public repositories. Each link is pinned to the commit it was read from.

Where these writeups live

Misc2

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

Constraint
8 official solutions
Also written up in: Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups, Ex-Origin/ctf-writeups
Pair
2 official solutions
Also written up in: Ex-Origin/ctf-writeups, fei9747/ctf-writeups

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

Exp
2 official solutions
Also written up in: Ex-Origin/ctf-writeups, fei9747/ctf-writeups

Misc2

Constraint

Pair

Binary exploitation1

Exp

Other 2019 events