# CTF Writeups by @jiegec

> CTF Writeups by @jiegec

## Writeups

- [THUCTF2018-Writeup](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/index.md>)
- [101 DES 250 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/crypto/101DES.md>)
- [Primary Mathematics 500 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/crypto/Primary_Mathematics.md>)
- [Primary Mathematics Revenge 500 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/crypto/Primary_Mathematics_Revenge.md>)
- [easy\_rsa 100 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/crypto/easy_rsa.md>)
- [polynomial 200 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/crypto/polynomial.md>)
- [Flow 200 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Flow.md>)
- [Format 200 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Format.md>)
- [Kasparov 300 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Kasparov.md>)
- [Othello 150 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Othello.md>)
- [Pixels 100 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Pixels.md>)
- [RedbudToken1 - Welcome 150 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/RedbudToken1_Welcome.md>)
- [Ruby Master - Level 1 50 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Ruby_Master_Level_1.md>)
- [Ruby Master - Level 2 150 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Ruby_Master_Level_2.md>)
- [Ruby Master - Level 3 150 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/misc/Ruby_Master_Level_3.md>)
- [pwn1 300 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/pwn/pwn1.md>)
- [pwn2 200 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/pwn/pwn2.md>)
- [pwn4 400 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/pwn/pwn4.md>)
- [Easy Reverse 150 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/reverse/Easy_Reverse.md>)
- [User Auth 250 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/reverse/User_Auth.md>)
- [godaddy 300 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/reverse/godaddy.md>)
- [BabyWeb 600 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/BabyWeb.md>)
- [Flask 500 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/Flask.md>)
- [XSS-1 400 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/XSS1.md>)
- [XSS-2 400 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/XSS2.md>)
- [wdSimpleSQLv1-1 100 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/wdSimpleSQLv1-1.md>)
- [wdSimpleSQLv1-2 150 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/wdSimpleSQLv1-2.md>)
- [wdSimpleSQLv4 500 points](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/web/wdSimpleSQLv4.md>)
- [README](<https://jia.je/ctf-writeups/2019-01-27-codegate2019/index.md>)
- [mini\_conveter](<https://jia.je/ctf-writeups/2019-01-27-codegate2019/mini_converter.md>)
- [InCTF 2021](<https://jia.je/ctf-writeups/2021-08-15-inctf2021/index.md>)
- [Alpha Pie](<https://jia.je/ctf-writeups/2021-08-15-inctf2021/alpha-pie.md>)
- [Easy Xchange](<https://jia.je/ctf-writeups/2021-08-15-inctf2021/easy-xchange.md>)
- [find\_plut0](<https://jia.je/ctf-writeups/2021-08-15-inctf2021/find_plut0.md>)
- [flagchecker](<https://jia.je/ctf-writeups/2021-08-15-inctf2021/noodes.md>)
- [HITCON CTF 2022](<https://jia.je/ctf-writeups/2022-11-25-hitconctf2022/index.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-25-hitconctf2022/babysss.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-25-hitconctf2022/rce.md>)
- [GlacierCTF 2022](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/index.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/crypto/CryptoShop.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/misc/fuzzy_dungeon.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/pwn/Break the Calculator.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/web/FlagCoin Stage 1.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/web/FlagCoin Stage 2.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/web/Glacier Top News.md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/web/RCE as a Service (Stage 1).md>)
- [Challenge](<https://jia.je/ctf-writeups/2022-11-26-glacierctf2022/web/RCE as a Service (Stage 2).md>)
- [WHY2025 CTF](<https://jia.je/ctf-writeups/2025-08-08-why2025/index.md>)
- [Somkracht 65537](<https://jia.je/ctf-writeups/2025-08-08-why2025/crypto/somkracht-65537.md>)
- [Substitute Teacher](<https://jia.je/ctf-writeups/2025-08-08-why2025/crypto/substitute-teacher.md>)
- [Painted Black](<https://jia.je/ctf-writeups/2025-08-08-why2025/forensics/painted-black.md>)
- [The Wizard](<https://jia.je/ctf-writeups/2025-08-08-why2025/forensics/the-wizard.md>)
- [Just One Line](<https://jia.je/ctf-writeups/2025-08-08-why2025/misc/just-one-line.md>)
- [TitleCase](<https://jia.je/ctf-writeups/2025-08-08-why2025/misc/title-case.md>)
- [Twenty Three Drivers](<https://jia.je/ctf-writeups/2025-08-08-why2025/misc/twenty-three-drivers.md>)
- [Captcha 2.0](<https://jia.je/ctf-writeups/2025-08-08-why2025/network/captcha-2.0.md>)
- [Ransomware attack](<https://jia.je/ctf-writeups/2025-08-08-why2025/network/ransomware-attack.md>)
- [Scan Me](<https://jia.je/ctf-writeups/2025-08-08-why2025/network/scan-me.md>)
- [3 Ball Mark](<https://jia.je/ctf-writeups/2025-08-08-why2025/pwnable/3-ball-mark.md>)
- [Lazy Code 1.0](<https://jia.je/ctf-writeups/2025-08-08-why2025/pwnable/lazy-code-1.0.md>)
- [Lazy Code 2.0](<https://jia.je/ctf-writeups/2025-08-08-why2025/pwnable/lazy-code-2.0.md>)
- [Old Memes Never Die](<https://jia.je/ctf-writeups/2025-08-08-why2025/pwnable/old-memes-never-die.md>)
- [Simple AI Bot](<https://jia.je/ctf-writeups/2025-08-08-why2025/pwnable/simple-ai-bot.md>)
- [Buster](<https://jia.je/ctf-writeups/2025-08-08-why2025/web/buster.md>)
- [Planets](<https://jia.je/ctf-writeups/2025-08-08-why2025/web/planets.md>)
- [Shoe Shop 1.0](<https://jia.je/ctf-writeups/2025-08-08-why2025/web/shoe-shop-1.0.md>)
- [WHY2025 CTF TIMES](<https://jia.je/ctf-writeups/2025-08-08-why2025/web/why2025-ctf-times.md>)
- [scriptCTF 2025](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/index.md>)
- [diskchal](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/diskchal.md>)
- [Div](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/div.md>)
- [Div 2](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/div2.md>)
- [EaaS](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/eaas.md>)
- [emoji](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/emoji.md>)
- [Enchant](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/enchant.md>)
- [Index](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/index-1.md>)
- [Index 2](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/index-2.md>)
- [Just Some Avocado](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/just-some-avocado.md>)
- [Mod](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/mod.md>)
- [Modulo](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/modulo.md>)
- [pdf](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/pdf.md>)
- [Plastic Shield 2](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/plastic-shield-2.md>)
- [Plastic Shield](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/plastic-shield.md>)
- [Read The Rules](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/read-the-rules.md>)
- [Renderer](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/renderer.md>)
- [RSA-1](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/rsa-1.md>)
- [Secure Server 2](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/secure-server-2.md>)
- [Secure-Server](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/secure-server.md>)
- [Subtract](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/subtract.md>)
- [Sums](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/sums.md>)
- [The Insider 3](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/the-insider-3.md>)
- [The Insider](<https://jia.je/ctf-writeups/2025-08-16-scriptctf2025/the-insider.md>)
- [SekaiCTF 2025](<https://jia.je/ctf-writeups/2025-08-16-sekaictf2025/index.md>)
- [My Flask App](<https://jia.je/ctf-writeups/2025-08-16-sekaictf2025/my-flask-app.md>)
- [Sanity Check](<https://jia.je/ctf-writeups/2025-08-16-sekaictf2025/sanity-check.md>)
- [SSSS](<https://jia.je/ctf-writeups/2025-08-16-sekaictf2025/ssss.md>)
- [BrunnerCTF 2025](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/index.md>)
- [BakeDown](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/bakedown.md>)
- [Baker Brian](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/baker-brian.md>)
- [Based Brunner](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/based-brunner.md>)
- [Brunner's Bakery](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/brunners-bakery.md>)
- [Brunsviger Huset](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/brunsviger-huset.md>)
- [Cheesecake](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/cheesecake.md>)
- [Cookie Jar](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/cookie-jar.md>)
- [Dat Overflow Dough](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/dat-overflow-dough.md>)
- [DoughBot](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/doughbot.md>)
- [Encrypted and Desperate](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/encrypted-and-desperate.md>)
- [EPIC CAKE BATTLES OF HISTORY!!!](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/epic-cake-battles-of-history.md>)
- [Grandma's Predictable Cookies](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/grandmas-predictable-cookies.md>)
- [Half Baked](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/half-baked.md>)
- [Insanity Check](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/insanity-check.md>)
- [Join the Discord!](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/join-the-discord.md>)
- [New Order](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/new-order.md>)
- [Online Cake Flavour Shop](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/online-cake-flavour-shop.md>)
- [Othello Villains](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/othello-villains.md>)
- [Peppernuts](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/peppernuts.md>)
- [Pie Recipe](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/pie-recipe.md>)
- [Rolling Pin](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/rolling-pin.md>)
- [Sanity Check](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/sanity-check.md>)
- [Shaken, Not Stirred](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/shaken-not-stirred.md>)
- [TheBakingCase](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-baking-case.md>)
- [The Complicated Recipe](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-complicated-recipe.md>)
- [The Cryptographic Kitchen!](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-cryptographic-kitchen.md>)
- [The Great Mainframe Bake-Off](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-great-mainframe-bake-off.md>)
- [The Ingredient Shop](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-ingredient-shop.md>)
- [The Secret Brunsviger](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-secret-brunsviger.md>)
- [The Yeast Key](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/the-yeast-key.md>)
- [There Is a Lovely Land](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/there-is-a-lovely-land.md>)
- [Train Mania](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/train-mania.md>)
- [Trippi Troppa Chaos](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/trippi-troppa-chaos.md>)
- [Where Robots Cannot Search](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/where-robots-cannot-search.md>)
- [Whisk](<https://jia.je/ctf-writeups/2025-08-22-brunnerctf2025/whisk.md>)
- [HITCON CTF 2025](<https://jia.je/ctf-writeups/2025-08-22-hitconctf2025/index.md>)
- [git-playground](<https://jia.je/ctf-writeups/2025-08-22-hitconctf2025/git-playground.md>)
- [snakeCTF 2025 Quals](<https://jia.je/ctf-writeups/2025-08-29-snakectf2025quals/index.md>)
- [Sanity Check](<https://jia.je/ctf-writeups/2025-08-29-snakectf2025quals/sanity-check.md>)
- [Scr4mbl3d](<https://jia.je/ctf-writeups/2025-08-29-snakectf2025quals/scr4mbl3d.md>)
- [Unf33dMe](<https://jia.je/ctf-writeups/2025-08-29-snakectf2025quals/unf33dme.md>)
- [TFC CTF 2025](<https://jia.je/ctf-writeups/2025-08-29-tfcctf2025/index.md>)
- [DISCORD SHENANIGANS V5](<https://jia.je/ctf-writeups/2025-08-29-tfcctf2025/discord-shenanigans-v5.md>)
- [FONT LEAGUES](<https://jia.je/ctf-writeups/2025-08-29-tfcctf2025/font-leagues.md>)
- [corCTF 2025](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/index.md>)
- [cor.shop](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/cor-shop.md>)
- [Nintendo-SSwitch](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/nintendo-sswitch.md>)
- [ssss](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/ssss.md>)
- [survey](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/survey.md>)
- [touch-grass-3](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/touch-grass-3.md>)
- [vanity-check](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/vanity-check.md>)
- [yamlquiz](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/yamlquiz.md>)
- [yourock](<https://jia.je/ctf-writeups/2025-08-30-corctf2025/yourock.md>)
- [Nullcon Berlin HackIM 2025 CTF](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/index.md>)
- [decryption execution service](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/decryption-execution-service.md>)
- [Field trip](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/field-trip.md>)
- [grandmas\_notes](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/grandmas-notes.md>)
- [hidden\_strings](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/hidden-strings.md>)
- [Magnetic tape](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/magntic-tape.md>)
- [Narrow DES](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/narrow-des.md>)
- [Null Sanity](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/null-sanity.md>)
- [Power tower](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/power-tower.md>)
- [pwgen](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/pwgen.md>)
- [Simple ECDSA](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/simple-ecdsa.md>)
- [usbstorage](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/usbstorage.md>)
- [webby](<https://jia.je/ctf-writeups/2025-09-04-nullcon-berlin-hackim-2025-ctf/webby.md>)
- [ImaginaryCTF 2025](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/index.md>)
- [addition](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/addition.md>)
- [babybof](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/babybof.md>)
- [certificate](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/certificate.md>)
- [codenames-1](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/codenames-1.md>)
- [comparing](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/comparing.md>)
- [discord](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/discord.md>)
- [imaginary-notes](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/imaginary-notes.md>)
- [leaky-rsa](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/leaky-rsa.md>)
- [nimrod](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/nimrod.md>)
- [obfuscated-1](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/obfuscated-1.md>)
- [passwordless](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/passwordless.md>)
- [pearl](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/pearl.md>)
- [redacted](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/redacted.md>)
- [sanity-check](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/sanity-check.md>)
- [significant](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/significant.md>)
- [stacked](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/stacked.md>)
- [survey](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/survey.md>)
- [tax-return](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/tax-return.md>)
- [thrift-store](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/thrift-store.md>)
- [wave](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/wave.md>)
- [weird-app](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/weird-app.md>)
- [x-tension](<https://jia.je/ctf-writeups/2025-09-05-imaginary-ctf-2025/x-tension.md>)
- [ASIS CTF Quals 2025](<https://jia.je/ctf-writeups/2025-09-06-asis-ctf-quals-2025/index.md>)
- [ScrapScrap I](<https://jia.je/ctf-writeups/2025-09-06-asis-ctf-quals-2025/scrap-scrap-i.md>)
- [Under the Beamers](<https://jia.je/ctf-writeups/2025-09-06-asis-ctf-quals-2025/under-the-beamers.md>)
- [Welcome](<https://jia.je/ctf-writeups/2025-09-06-asis-ctf-quals-2025/welcome.md>)
- [CRACCON CTF 2025](<https://jia.je/ctf-writeups/2025-09-06-cracconctf2025/index.md>)
- [ECG](<https://jia.je/ctf-writeups/2025-09-06-cracconctf2025/ecg.md>)
- [knock-knock](<https://jia.je/ctf-writeups/2025-09-06-cracconctf2025/knock-knock.md>)
- [royalvoyage](<https://jia.je/ctf-writeups/2025-09-06-cracconctf2025/royalvoyage.md>)
- [BlackHat MEA CTF Qualification 2025](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/index.md>)
- [cute\_csp](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/cute-csp.md>)
- [Down the Rabbit Hole](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/down-the-rabbit-hole.md>)
- [file101](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/file101.md>)
- [Go brrr](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/go-brrr.md>)
- [Hash Factory](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/hash-factory.md>)
- [2025 湾区杯网络安全大赛初赛（院校组）](<https://jia.je/ctf-writeups/2025-09-08-wanqubei-quals-2025/index.md>)
- [checkwebshell](<https://jia.je/ctf-writeups/2025-09-08-wanqubei-quals-2025/checkwebshell.md>)
- [minigame](<https://jia.je/ctf-writeups/2025-09-08-wanqubei-quals-2025/minigame.md>)
- [new\_trick](<https://jia.je/ctf-writeups/2025-09-08-wanqubei-quals-2025/new-trick.md>)
- [silentminer](<https://jia.je/ctf-writeups/2025-09-08-wanqubei-quals-2025/silentminer.md>)
- [someinterersa](<https://jia.je/ctf-writeups/2025-09-08-wanqubei-quals-2025/someinterersa.md>)
- [2p2t](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/2p2t.md>)
- [WatCTF F25](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/index.md>)
- [curve-desert](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/curve-desert.md>)
- [design-portfolio](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/design-portfolio.md>)
- [gooses-typing-test](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/gooses-typing-test.md>)
- [hex-editor-xtended-v2](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/hex-editor-xtended-v2.md>)
- [house-drawin](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/house-drawn.md>)
- [intro2pwn](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/intro2pwn.md>)
- [java-oracle](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/java-oracle.md>)
- [permpress](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/permpress.md>)
- [person-tracker](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/person-tracker.md>)
- [pointless](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/pointless.md>)
- [stream-cipher-fans-when](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/stream-cipher-fans-when.md>)
- [Waterloo Trivia Dash](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/waterloo-trivia-dash.md>)
- [web-slinger-logs](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/web-slinger-logs.md>)
- [welcome](<https://jia.je/ctf-writeups/2025-09-10-watctf-f25/welcome.md>)
- [FortID CTF 2025](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/index.md>)
- [Cascader](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/cascader.md>)
- [Crypto](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/crypto.md>)
- [Discord](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/discord.md>)
- [Guessy](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/guessy.md>)
- [Info](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/info.md>)
- [Jey is not my son](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/jey-is-not-my-son.md>)
- [Michael Scottfield](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/michael-scottfield.md>)
- [Misc](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/misc.md>)
- [Protect the Environment](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/protect-the-environment.md>)
- [Pwn](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/pwn.md>)
- [Rev From The Past](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/rev-from-the-past.md>)
- [Rev](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/rev.md>)
- [Web](<https://jia.je/ctf-writeups/2025-09-12-fortid-ctf-2025/web.md>)
- [K17 CTF 2025](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/index.md>)
- [autofill](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/autofill.md>)
- [bait and switch](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/bait-and-switch.md>)
- [daily re](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/daily-re.md>)
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- [discord](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/discord.md>)
- [el camel](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/el-camel.md>)
- [ezwins](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/ezwins.md>)
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- [jumping](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/jumping.md>)
- [layers](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/layers.md>)
- [pass me the salt](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/pass-me-the-salt.md>)
- [phished](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/phished.md>)
- [pwnable document format](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/pwnable-document-format.md>)
- [qna](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/qna.md>)
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- [sanity check](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/sanity-check.md>)
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- [singular hole](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/singular-hole.md>)
- [smootie](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/smootie.md>)
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- [worsehelp](<https://jia.je/ctf-writeups/2025-09-19-k17-ctf-2025/worsehelp.md>)
- [CrewCTF 2025](<https://jia.je/ctf-writeups/2025-09-20-crewctf-2025/index.md>)
- [Heap Jail](<https://jia.je/ctf-writeups/2025-09-20-crewctf-2025/heapjail.md>)
- [Holmes CTF 2025](<https://jia.je/ctf-writeups/2025-09-22-holmes-ctf-2025/index.md>)
- [The Card](<https://jia.je/ctf-writeups/2025-09-22-holmes-ctf-2025/the-card.md>)
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- [The Watchman's Residue](<https://jia.je/ctf-writeups/2025-09-22-holmes-ctf-2025/the-watchmans-residue.md>)
- [HackornCTF 2025 Quals](<https://jia.je/ctf-writeups/2025-09-25-hackornctf-2025-quals/index.md>)
- [back time](<https://jia.je/ctf-writeups/2025-09-25-hackornctf-2025-quals/back-time.md>)
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- [the easy flag](<https://jia.je/ctf-writeups/2025-09-25-hackornctf-2025-quals/the-easy-flag.md>)
- [tv buzz](<https://jia.je/ctf-writeups/2025-09-25-hackornctf-2025-quals/tv-buzz.md>)
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- [Badmode](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/badmode.md>)
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- [Cat Lovers Hub](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/cat-lovers-hub.md>)
- [DGA](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/dga.md>)
- [Fautif](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/fautif.md>)
- [Gotam](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/gotam.md>)
- [Koori](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/koori.md>)
- [Reminder](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/reminder.md>)
- [Rider](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/rider.md>)
- [Roman Wire](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/roman-wire.md>)
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- [Show me](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/show-me.md>)
- [Spy PLC](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/spy-plc.md>)
- [Tangle](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/tangle.md>)
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- [Verrou](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/verrou.md>)
- [Vibe Web Mail](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/vibe-web-mail.md>)
- [Welcome](<https://jia.je/ctf-writeups/2025-09-26-iran-tech-olympics-ctf-2025/welcome.md>)
- [Sunshine CTF 2025](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/index.md>)
- [Access Code](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/access-code.md>)
- [BASEic](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/baseic.md>)
- [BigMak](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/bigmak.md>)
- [Bits of Space](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/bits-of-space.md>)
- [Can you hEAR me?](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/can-you-hear-md.md>)
- [Canaveral](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/canaveral.md>)
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- [Missoncritical1](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/missioncritical1.md>)
- [Numbers Game](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/numbers-game.md>)
- [OK BOOMER](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/ok-boomer.md>)
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- [the poop challenge](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/the-poop-challenge.md>)
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- [Web Forge](<https://jia.je/ctf-writeups/2025-09-27-sunshine-ctf-2025/web-forge.md>)
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- [seven7seven](<https://jia.je/ctf-writeups/2025-10-04-jailctf-2025/seven7seven.md>)
- [Hack.lu CTF 2025](<https://jia.je/ctf-writeups/2025-10-18-hacklu-ctf-2025/index.md>)
- [CÖDEBULLAR](<https://jia.je/ctf-writeups/2025-10-18-hacklu-ctf-2025/codebullar.md>)
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- [2025 第九届“强网杯”全国网络安全挑战赛线上初赛](<https://jia.je/ctf-writeups/2025-10-18-qiangwangbei-quals-2025/index.md>)
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- [legacyOLED](<https://jia.je/ctf-writeups/2025-10-18-qiangwangbei-quals-2025/legacyoled.md>)
- [Hack The Boo CTF 2025](<https://jia.je/ctf-writeups/2025-10-24-hack-the-boo-ctf-2025/index.md>)
- [Leaking for Answers](<https://jia.je/ctf-writeups/2025-10-24-hack-the-boo-ctf-2025/leaking-for-answers.md>)
- [Rookie Mistake](<https://jia.je/ctf-writeups/2025-10-24-hack-the-boo-ctf-2025/rookie-mistake.md>)
- [Rookie Salvation](<https://jia.je/ctf-writeups/2025-10-24-hack-the-boo-ctf-2025/rookie-salvation.md>)
- [Rusted Oracle](<https://jia.je/ctf-writeups/2025-10-24-hack-the-boo-ctf-2025/rusted-oracle.md>)
- [The Azure Deception](<https://jia.je/ctf-writeups/2025-10-24-hack-the-boo-ctf-2025/the-azure-deception.md>)
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- [2025 第九届 XCTF 国际网络攻防联赛总决赛](<https://jia.je/ctf-writeups/2025-10-26-xctf-final-2025/index.md>)
- [lel](<https://jia.je/ctf-writeups/2025-10-26-xctf-final-2025/lel.md>)
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- [Day 01](<https://jia.je/ctf-writeups/2025-12-01-advent-of-pwn-2025/day-01.md>)
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- [Advent of CTF 2025](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/index.md>)
- [Day 01](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-01.md>)
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- [Day 09 Time To Escalate](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-09.md>)
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- [Day 13](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-13.md>)
- [Day 14 Multifactorial](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-14.md>)
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- [Day 17 Won’t You Guide My Drone Tonight?](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-17.md>)
- [Day 18 Sealed for Delivery](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-18.md>)
- [Day 19 Trust Issues](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-19.md>)
- [Day 20 Custom Packaging](<https://jia.je/ctf-writeups/2025-12-02-advent-of-ctf-2025/day-20.md>)
- [BlackHat MEA CTF Final 2025](<https://jia.je/ctf-writeups/2025-12-02-blackhat-mea-ctf-final-2025/index.md>)
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- [Codegate CTF 2026 Finals](<https://jia.je/ctf-writeups/2026-07-23-codegate-2026-finals/index.md>)
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- [setcontext](<https://jia.je/ctf-writeups/summer2026/setcontext.md>)
- [stack\_pivot](<https://jia.je/ctf-writeups/summer2026/stack_pivot.md>)