$ ctf42

BackdoorCTF 2025

official repo

BackdoorCTF is the flagship event of InfoSecIITR.

Categories will include Pwn, Rev, Web, Crypto, Blockchain, Forensics

Discord invite for the competition is https://discord.gg/Khq4xpTG9D

Supported by our Sponsors:

Platinum Sponsors: - Binary Ninja (https://binary.ninja/) - CloudDefense.AI (https://clouddefense.ai) - Crustdata (https://crustdata.com) - Dataflow Security (https://www.dfsec.com/) - Ret2.systems (https://ret2.io) - Zellic (https://zellic.io)

Gold Sponsors: - OffSec (https://www.offsec.com) - Hack The Box (https://www.hackthebox.com/)

Silver Sponsors: - Altered Security (https://www.alteredsecurity.com) - Parrot-CTFs (https://parrot-ctfs.com/) - Cyberwave Network (https://training.cyberwave.network/)

Infrastructure Sponsored by: - Google Cloud (goo.gle/ctfsponsorship)

Happy Hacking!

Web 7

Challenge Has
Flask_of_Cookies files
Go_Touch_Grass files
Image_Gallery files
MCP_Mayhem files
MarketFlow files
Shop_of_life files
Trust_Issues files

Pwn 9

Challenge Has
Aladdin_ka_Chirag files
Devils_Convergence files
Gamble files
Lolimancer files
Makeine files
Santas_Workshop files
The_Last_Duel files
skernel files
vibe_kode files

Reverse 10

Challenge Has
Backdoor files
Easy_Crackme files
Infinity files
Not_so_easy files
SIMD_Highway files
The_Stage files
To_jmp_or_not_jmp files
Vault files
Where_code files
mazerunner files

Crypto 8

Challenge Has
Ambystoma_Mexicanum files
Ambystoma_Mexicanum_Revenge files
The_Job files
bolt_fast files
bread_vs_keys_v1 files
lcg_2 files
m4candch3353 files
p34kC0nj3c7ur3 files

Forensics 6

Challenge Has
Complete_Chaos files
Fractonacci files
Kiidddoooo files
Sonic files
Terrific_Transformer files
exp_golomb files

Misc 3

Challenge Has
404_Friend_Not_Found files
Mizuhashi_Simple_Domain files
Title_Decider files