Google Capture The Flag 2019 (Finals)
16 challenges with 9 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. 11 of them also carry the solution Google Capture The Flag 2019 (Finals)’s own organisers published, which is linked on the challenge itself.
Full task list on CTFtimeUncategorised13
The upstream scoreboard did not say, so neither do we.
Published by the organisers in google/google-ctf: exploit/doit.c, exploit/doit.py, exploit/shellcode.asm, exploit/shellcode.h
Published by the organisers in google/google-ctf: solve/matrix.sage, solve/solve.py
Published by the organisers in google/google-ctf: solver.cpp, solver.h
Published by the organisers in google/google-ctf: solution/checker.py, solution/solver.py
Published by the organisers in google/google-ctf: exploit/doit.py, exploit/ridl.c
Suidbash
2 official solutionsAlso written up in: shift-crops/CTFWriteups, shift-crops/CTFWriteups
Published by the organisers in google/google-ctf: solve.py
Published by the organisers in google/google-ctf: exploit.py
Published by the organisers in google/google-ctf: solution/test_solver.py
Published by the organisers in google/google-ctf: solution/solve.sh
Race Interface
1 official solutionAlso written up in: shift-crops/CTFWriteups
Published by the organisers in google/google-ctf: exploit/exploit.c
Shell
1 official solutionAlso written up in: bincat99/pwn
Misc2
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Also written up in: shift-crops/CTFWriteups
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Also written up in: bincat99/pwn
Same technique in picoCTF: PW Crack 2, Permissions, Specialer
Cryptography1
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.
Published by the organisers in google/google-ctf: solve.sage
- rsa
- lll
- coppersmith
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, john_pollard