BackdoorCTF 2019


CTF Archive

Welcome to Backdoor CTF 2019

A jeopardy-style CTF organized by InfoSecIITR.

The CTF will consist of challenges on various categories - Reversing, Blockchain, Binary Exploitation, Web, Cryptography, Forensics

Original Date: Sat, 26 Oct. 2019, 15:30 UTC — Sun, 27 Oct. 2019, 15:30 UTC
Original URL: https://backdoor.sdslabs.co/
CTFtime Entry: BackdoorCTF2019
Organizing Team: InfoSecllTR and SDSLabs


Challenges

Simple echo!

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

Author: InfoSecllTR and SDSLabs

Fawkes has been playing around with Finite State Automaton lately. While exploring the concept of implementing regular expressions using FSA he thought of implementing an email-address validator.

Recently, Lua started to annoy Fawkes. To this, Fawkes, challenged Lua to a battle of wits. Fawkes promised to reward Lua, only if she manages to transition to a non-reachable state in the FSA he implemented. The replication can be accessed here.

Author: InfoSecllTR and SDSLabs

At least let me free 7 tcaches.

Author: Nipun Gupta

Just another babyheap challenge.

Author: Nipun Gupta

Can you reach Zion and find the flag? You can download a copy of the Matrix to play with here, but the flag can only be found on Zion, through the real Matrix.

Author: InfoSecllTR and SDSLabs

Trick-or-treat Revenge.

Author: Nipun Gupta

There is a wierd kind of authentication service running. The binary can be found here. The vampire says that there is no need for bruteforce.

Author: InfoSecllTR and SDSLabs

The flag is encrypted using a system that makes use of prime factorization of large numbers.

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

Author: InfoSecllTR and SDSLabs


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