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My CTF Challenges

Source code and solution of CTF challenges that I created.

vsCTF 2024

Challenge Name Category Difficulty Solves
intro-reversing rev Easy 387
baby-game algo Easy 345
fall-guys misc Easy 174
awa-jelly rev Easy 184
quickmaffs-permutation-puzzle algo Medium 74
baby-game-revisited algo Hard 13
miku-ai misc Hard 1
unfinished-homework rev Hard 2

osu!gaming CTF 2024

Challenge Name Category Difficulty Solves
beginners N/A Baby N/A
osu!crossword osu Easy 189
wysi-baby rev Easy 170
abnormal-life forensics Easy 84
tillerino misc Easy 53
osu!coin web3 Medium 39
when-you-see-it osint Medium 35
scorev3 rev Medium 21
wysi-revenge rev Hard 45

vsCTF 2023

Challenge Name Category Difficulty Solves
ECC Fantasy Crypto Easy 21
reCAPTCHA v39 Misc Easy 57
OtterSec Is Cat Misc Easy 26
Sheep Loves Maths Misc Medium 16
ZKPLite Misc Hard 3
Functional CPP II Reverse Easy 59
ANNS Reverse Hard 3

SekaiCTF 2023

Challenge Name Category Difficulty (out of 5) Solves
cryptoGRAPHy1 Crypto 1 76
cryptoGRAPHy2 Crypto 2 55
cryptoGRAPHy3 Crypto 4 31
DEFCON Invitation Forensics 2 148
Wiki Game PPC 1 284
Mikusweeper PPC 3 35
Teyvat Travel Guide Reverse 3 31
Conquest Of Camelot Reverse 4 10

CryptoverseCTF 2023

Challenge Name Category Difficulty Solves
Knapsack vs. Backpack Crypto Medium 31
PicoChip 1 Crypto Medium 18
PicoChip 2 Crypto Hard 7
Fractional Flag Crypto Hard 17
OJail Misc Easy 74
Two and a half years Misc Hard 16
Solid Reverse Reverse Medium 49
Java Not Interesting Reverse Medium 22
東方ダンマクカグラ Reverse Medium 19
Safe Locker Web Easy 36
Safe Locker++ Web Hard 5

CryptoverseCTF 2022

Challenge Name Category Difficulty Solves
Baby Maths Misc Easy 28
Cherry Blossom Misc Medium 17
Not georainbolt Misc Medium 37
RSA 3 Crypto Medium 31
Big Rabin Crypto Medium 53
Weird dlog Crypto Medium 14
1337 Crypto Medium 18
World Cup Predictions Reverse Easy 66
My Online Voucher Reverse Medium 4
Boost Game Reverse Hard 11
Baby CUDA Reverse Hard 4
Cheney-on-the-MTA Reverse Hard 2

Security BSides Ahmedabad CTF 2022

Challenge Name Category Difficulty Solves
Password Checker Reverse Easy 2
Cyrene Reverse Medium 1

SekaiCTF 2022

Challenge Name Category Difficulty (out of 5) Solves
Time Capsule Crypto 1 178
Secure Image Encryption Crypto 2 49
Robust CBC Crypto 4 10
Let's Play Osu!Mania PPC 1 273
Electric Box PPC 3 36
Perfect Match X-treme Reverse 1 111
Matrix Lab 1 Reverse 1 191
Matrix Lab 2 Reverse 2 80
Matrix Lab 3 Reverse 3 19
Baby Chicken Reverse 4 6

vsCTF 2022

Challenge Name Category Difficulty Solves
Baby RSA Crypto Easy 68
Strongest RSA Crypto Easy 53
Secure Grading System Crypto Medium 21
NIST Finalist: Revisited Crypto Hard 12
Let's play osu! Forensics Medium 10
Lost Assignment Misc Easy 93
Egg Hunt Misc Hard 10
Flag Checker Reverse Easy 19
Functional CPP Reverse Easy 7
Tuning Test Reverse Easy 20
Binary Flood Reverse Medium 30
Hex-A-Gone Reverse Hard 6

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