0CTF/TCTF 2019 Quals


CTF Archive.

Welcome to 0CTF/TCTF 2019 Quals

0CTF/TCTF 2019 Quals is an annual online qualifier for the prestigious 0CTF finals, a Capture The Flag (CTF) cybersecurity competition hosted by the 0OPS team and Tencent eee.

CTF games often touch on many other aspects of information security: cryptography, stego, binary analysis, reverse engineering, mobile security and others. Good teams generally have strong skills and experience in all these issues.

Original Date: Sat, 23 March 2019, 06:00 UTC — Mon, 25 March 2019, 06:00 UTC
Original URL: https://ctf.0ops.sjtu.cn/
CTFtime Entry: 0CTF/TCTF 2019 Quals
Organizing Team: 0ops and eee



Challenges

Exploit this arcane task manager, where freeing memory is just the beginning of the magic show!

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Crack the shielded scribbles of the Aegis Notebook, where each note you add might just unlock a hidden path to cyber glory

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

It scans!

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Let's refresh our ptmalloc exploit techniques in 2019!

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

A sandbox in lua

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

People always say that rop is turing complete, show me by implementing the Floyd-Warshall algorithm

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Use flagCheckDynamic to input the flag you get from the challenge to get the actual flag

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

RSA challs are always easy, right? Even if N is not a integer.

Note: I have a modified rsa version which works woth pwn.college so use rsa.modified.sage instead of rsa.sage

To run the challenge use this command:

sudo sage rsa.modified.sage

Author: 0ops and eee

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

7-Day | 30-Day | All-Time

Rank Hacker Badges Score