CTF (Capture The Flag) writeups

• 2024 Writeups
• 2022 Writeups
• 2020 Writeups
• 2019 Writeups
• 2018 Writeups
• 2017 Writeups
• 2016 Writeups
• 2015 Writeups
• Stats

2024

IrisCTF 2024

What's My Password?, Web 50

https://github.com/bl4de/ctf/blob/master/2024/IrisCTF_2024/whats-my-password/whats_my_password_solution.md

2022

SquareCTF 2022

EZ Pwn 1, Pwn 50

https://github.com/bl4de/ctf/blob/master/2022/SquareCTF_2022/ezpwn1_writeup.md

2020

Midnightsun CTF 2020

Admpanel, Pwn 58

https://github.com/bl4de/ctf/blob/master/2020/Midnight_Sun_2020_CTF/admpanel.md

2019

TAMUctf 2019

Bird Box, Web 478

https://github.com/bl4de/ctf/blob/master/2019/TAMUCTF_2019/writeups/Web2_Bird_Box_Challenge.md

Login App, Web 477

https://github.com/bl4de/ctf/blob/master/2019/TAMUCTF_2019/writeups/Web4_Login_App.md

2018

DEFCON QUALS 2018

sbva, Web 110

https://github.com/bl4de/ctf/blob/master/2018/DEF_CON_Quals_2018/sbva/sbva_web.md

INSHACK CTF 2018

Crimemail, Web 20

https://github.com/bl4de/ctf/blob/master/2018/INSHACK_CTF_2018/crimemail/Crimemail_Web20.md

Crypt0r part 1, Crypto 20

https://github.com/bl4de/ctf/blob/master/2018/INSHACK_CTF_2018/crypt0r/Crypt0r_Crypto20.md

nullcon HackIM 2018

Web2
https://github.com/bl4de/ctf/blob/master/2018/nullcon_CTF_2018/web2/web2_200.md

2017

CERT.PL ECSM 2017 CTF

Web1
https://github.com/bl4de/ctf/blob/master/2017/CERTPL_ECSM_2017/web1_writeup.md

Hack Dat Kiwi CTF 2017

MD5 Games, Web 50
https://github.com/bl4de/ctf/blob/master/2017/HackDatKiwi_CTF_2017/md5games1/md5games1.md

ASIS CTF 2017

Golem is Stupid!, Web 41
https://github.com/bl4de/ctf/blob/master/2017/ASIS_CTF_2017/Golem/Golem_Web_writeup.md

PlaidCTF 2017

zipper, Misc 50
https://github.com/bl4de/ctf/blob/master/2017/PlaidCTF_2017/zipper/zipper.md

Volga 2017 Quals

Bloody Feedback, Web 100 https://github.com/bl4de/ctf/blob/master/2017/Volga2017_CTF_Quals/Bloody_Feedback_Web_100/Bloody_Feedback_Web_100.md

Boston Key Party 2017

Prudentialv2, Cloud 50
https://github.com/bl4de/ctf/blob/master/2017/BostonKeyParty_2017/Prudentialv2/Prudentialv2_Cloud_50.md

nullcon HackIM 2017

Web1
https://github.com/bl4de/ctf/blob/master/2017/nullcon_HackIM_2017/Web1.md

Web2
https://github.com/bl4de/ctf/blob/master/2017/nullcon_HackIM_2017/Web2.md

AlexCTF 2017

Crypto, Scripting, Forensic, RE, Trivia challenges writeup from AlexCTF
https://github.com/bl4de/ctf/blob/master/2017/AlexCTF/alexctf_2017_challenges_writeups.md

2016

Hack The Vote 2016 CTF

Sanders Fan Club, Web 100
https://github.com/bl4de/ctf/blob/master/2016/HackTheVote_2016/Web100_Indiana/Sanders_Fan_Club_Web100.md

CSAW CTF Qualification Round 2016

mfw, Web 125
https://github.com/bl4de/ctf/blob/master/2016/CSAW_CTF_2016/mfw/mfw_web125.md

kill, Forensic 50
https://github.com/bl4de/ctf/tree/master/2016/CSAW_CTF_2016/kill

Tokyo Westerns / MMA CTF 2016

Global Site, Web 50
https://github.com/bl4de/ctf/tree/master/2016/Tokyo_Westerns_MMA_CTF_2016/Global_Page_Web_50

IceCTF 2016

Exposed, Web 60
Miners, Web 65
Scavenger Hunt, Misc 60
Hidden in Plain Sight, RE 45
https://github.com/bl4de/ctf/blob/master/2016/IceCTF/IceCTF_writeups.md

TU CTF 2016

Duck Print, Web 100
https://github.com/bl4de/ctf/tree/master/2016/TUCTF_2016/Duck_Print_Web100

Student Grades, Web 50
https://github.com/bl4de/ctf/tree/master/2016/TUCTF_2016/Student_Grades_Web50

Google Capture The Flag 2016

Ernst Echidna, Web 50
https://github.com/bl4de/ctf/tree/master/2016/Google_CTF_2016/Ernst_Echidna_Web_50

In Recorded Conversation, Forensic 25
https://github.com/bl4de/ctf/tree/master/2016/Google_CTF_2016/In_Recorded_Conversation_Forensic_25

Spotted Quoll, Web 50
https://github.com/bl4de/ctf/tree/master/2016/Google_CTF_2016/Spotted_Quoll_Web_50

Wallowing Wallabies, Web 25
https://github.com/bl4de/ctf/tree/master/2016/Google_CTF_2016/Wallowing_Wallabies_Web_25

internetwache 2016 CTF

0ldsk00lBlog, Web 80
https://github.com/bl4de/ctf/blob/master/2016/internetwache_2016/0ldsk00lBlog_Web80_writeup.md

Quick Run, Misc 60
https://github.com/bl4de/ctf/blob/master/2016/internetwache_2016/QuickRun_Misc60_writeup.md

Rock With The Shark, Misc 70 https://github.com/bl4de/ctf/blob/master/2016/internetwache_2016/RockWithTheShark_Misc70_writeup.md

nullcon HackIM 2016 CTF

Unicle, Web 200
https://github.com/bl4de/ctf/blob/master/2016/HackIM_2016/Unicle_Web200/Unicle_Web200_writeup.md

2015

Ekoparty 2015 CTF

Scytcrypto, Crypto 50 https://github.com/bl4de/ctf/blob/master/2015/Ekoparty_CTF_2015/Scytcrypto_Crypto50.md

XOR Crypter, Crypto 200 https://github.com/bl4de/ctf/blob/master/2015/Ekoparty_CTF_2015/XOR_Crypter_Crypto200.md

Hack.lu CTF 2015

Module Loader, Web 100 https://github.com/bl4de/ctf/blob/master/2015/HACK.LU_CTF_2015/Module_Loader_Web100_writeup.md

ASIS CTF Finals 2015

Biglie, Forensic 100
https://github.com/bl4de/ctf/blob/master/2015/ASIS_CTF_2015/Biglie_Forensic_100_writeup.md

CSAW CTF Qualification Round 2015

Lawn Care Simulator, Web 200 https://github.com/bl4de/ctf/blob/master/2015/CSAW_CTF_2015/LawnCareimulator_Web200_writeup.md

MMA CTF 2015

Uploader, Web 100
https://github.com/bl4de/ctf/blob/master/2015/MMACTF_2015/Uploader_Web100.md

Boston Key Party 2015

Birgham Circle, Web 25
https://github.com/bl4de/ctf/blob/master/2015/BostonKeyPartyCTF_2015/BrighamCircle.md

Museum of Fine Arts, Web 25
https://github.com/bl4de/ctf/blob/master/2015/BostonKeyPartyCTF_2015/MuseumOfFineArts.md

North Eastern University, Web 25
https://github.com/bl4de/ctf/blob/master/2015/BostonKeyPartyCTF_2015/NorthEasternUniv.md

Prudential, Web 25
https://github.com/bl4de/ctf/blob/master/2015/BostonKeyPartyCTF_2015/Prudential.md

Symphony, Web 25
https://github.com/bl4de/ctf/blob/master/2015/BostonKeyPartyCTF_2015/Symphony.md

Stats

Full stats: https://ctftime.org/team/16701 (Stack)

2024

GOAL FOR 2024: Top 25 Poland; Top 1000 Global

(...in progress...)

2023

Ranking position: 11041 with 3.528 points, 78 (131 total) in Poland

2022

Ranking position: 3516 with 11.415 points, 42 (122 total) in Poland

2021

Ranking position: 2741 with 13.110 points, 44 (114 total) in Poland

2020

Ranking position: 2064 with 16.076 points; finished in top 5,75% teams with any points in CTFtime ranking, with 1,126% points of the best team

teams with any points: 35999

best team result: 1425,658 (perfect blue, USA)

2019

Ranking position: 1167 with 22.539 points; finished in top 4.701% teams with any points in CTFtime ranking, with 2,06% points of the best team

teams with any points: 24822

best team result: 1092.652 (Dragon Sector, PL)

2018

Ranking position: 1095 with 17.534 points; finished in top 7.083% teams with any points in CTFtime ranking, with 1,60% points of the best team

teams with any points: 18677

best team result: 1089,866 (Dragon Sector, PL)

2017

Ranking position: 1251 with 13,435 points; finished in top 8,55% teams with any points in CTFtime ranking, with 1,72% points of the best team

teams with any points: 14615

best team result: 791,422 (Eat, Sleep, Pwn, Repeat, Germany)

2016

Ranking position: 882 with 11,276 points; finished in top 9% teams with any points in CTFtime ranking, with 0,69% points of the best team

teams with any points: 10593

best team result: 1642,737 (dcua, Ukraine)

Writeups, tools, code snippets and notes from various CTF events I took part.

CTFtime.org ranking points calculator

https://github.com/bl4de/ctf/blob/master/calculatePoints.py

Simple Python script to calculate CTFtime.org ranking points from particular CTF event points based on formula from https://ctftime.org/rating-formula/
https://github.com/ctftime/ctftime.org/issues/25 [FIXED]