UIUCTF 2021 All Writeups



For UIUCTF 2021 we paid out $2,000 in writeup prizes. We were inspired by GoogleCTF’s writeup prizes. We prioritize concise technical communication and writeups that are fun to read and learn from, including those written from/for the perspective of beginners. Here is the full writeup list.

Challenge Author
baby_python Infintesky - Social Engineering Experts
baby_python natem135 - IrisSec
baby_python MasterWard - N1ghth4wks
baby_python leader - FF9
baby_python_fixed Infintesky - Social Engineering Experts
baby_python_fixed Eth007 - TeamlessCTF
baby_python_fixed Legoclones - BYU Cyberia
baby_python_fixed magnum - magnum
baby_python_fixed vwfhoqufqijnof - IrisSec
baby_python_fixed Leader - FF9
baby_python_fixed purple - idek
back_to_basics zeyu2001 - Social Engineering Experts
back_to_basics MasterWard - N1ghth4wks
beyond_root magnum - magnum
buy_buy_buy RJCyber - wackers
buy_buy_buy zeyu2001 - Social Engineering Experts
buy_buy_buy FIREPONY57 - TeamlessCTF
buy_buy_buy CultOfNull - CultOfNull
capture the :flag: zeyu2001 - Social Engineering Experts
capture the :flag: skat - IrisSec
CEO Sleipner - R49n4r0k
CEO Louis - SoloQ
CEO ComdeyOverflow - ComdeyOverflow
CEO CultOfNull - CultOfNull
Chaplin’s PR Nightmare - 1 niche - niche
Chaplin’s PR Nightmare - 1 ohcoz - BYU Cyberia
Chaplin’s PR Nightmare - 1 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 1 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 1 Leader - FF9
Chaplin’s PR Nightmare - 2 niche - niche
Chaplin’s PR Nightmare - 2 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 2 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 2 Leader - FF9
Chaplin’s PR Nightmare - 2 CultOfNull - CultOfNull
Chaplin’s PR Nightmare - 3 niche - niche
Chaplin’s PR Nightmare - 3 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 3 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 3 Leader - FF9
Chaplin’s PR Nightmare - 3 CultOfNull - CultOfNull
Chaplin’s PR Nightmare - 4 niche - niche
Chaplin’s PR Nightmare - 4 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 4 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 4 Leader - FF9
Chaplin’s PR Nightmare - 4 CultOfNull - CultOfNull
Chaplin’s PR Nightmare - 5 niche - niche
Chaplin’s PR Nightmare - 5 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 5 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 5 Leadeer - FF9
Chaplin’s PR Nightmare - 5 CultOfNull - CultOfNull
Chaplin’s PR Nightmare - 6 niche - niche
Chaplin’s PR Nightmare - 6 RJCyber - wackers
Chaplin’s PR Nightmare - 6 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 6 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 6 Leader - FF9
Chaplin’s PR Nightmare - 7 niche - niche
Chaplin’s PR Nightmare - 7 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 7 Leader - FF9
Chaplin’s PR Nightmare - 7 FIREPONY57 - TeamlessCTF
Chaplin’s PR Nightmare - 7 CultOfNull - CultOfNull
Chaplin’s PR Nightmare - 8 niche - niche
Chaplin’s PR Nightmare - 8 RJCyber - wackers
Chaplin’s PR Nightmare - 8 Legoclones - BYU Cyberia
Chaplin’s PR Nightmare - 8 lim_yj - Social Engineering Experts
Chaplin’s PR Nightmare - 8 Leader - FF9
Chaplin’s PR Nightmare - 8 purple - idek
Chaplin’s PR Nightmare - 8 benlambertbenlambertbenlambert - ohm
Constructive Criticism Blupper - thehackerscrew
Constructive Criticism 0b3t - BYU Cyberia
Constructive Criticism Polymero - K3RN3L4RMY
dhke_adventure Necron3574 - Cryptonite
doot doot Legoclones - BYU Cyberia
doot doot CultOfNull - CultOfNull
emote Sleipner - R49n4r0k
emote Legoclones - BYU Cyberia
emote bob123 - Social Engineering Experts
emote CultofNull - CultofNull
Feedback Survey BasmatiRice - RiceGang
Feedback Survey RJCyber - wackers
Feedback Survey FIREPONY57 - TeamlessCTF
gatekeeping AliceNCsyuk - TTT-team
gatekeeping vwfhoqufqijnof - IrisSec
gatekeeping CSN3RD - CSN3RD
Gonnegtions nobodyisnobody - RootMeUpBeforeYouGoGo
hvhpgs{synt} RJCyber - wackers
hvhpgs{synt} Fawl - Social Engineering Experts
insecure_seccomp volticks - Zh3r0
Join our Discord RJCyber - wackers
miniaturehorsedb Reaver - 5h0rt
OSINT The Creator Niasio - MuskHave
OSINT The Creator niche - niche
OSINT The Creator RJCyber - wackers
OSINT The Creator Seabass - Social Engineering Experts
OSINT The Creator CultOfNull - CultOfNull
OSINT The Creator 2 niche - niche
OSINT The Creator 2 RJCyber - wackers
OSINT The Creator 2 CultOfNull - CultOfNull
pawnfish PwN_3v3rY7h1nG - PwN_3v3rY7h1nG
phpfuck Sleipner - R49n4r0k
phpfuck ComdeyOverflow - ComdeyOverflow
phpfuck Legoclones - BYU Cyberia
phpfuck Infintesky - Social Engineering Experts
phpfuck MasterWard - N1ghth4wks
phpfuck vwfhoqufqijnof - IrisSec
phpfuck Leader - FF9
phpfuck_fixed face0xff - ECSC Team France
phpfuck_fixed ch13 - ohm
phpfuck_fixed Mystiz - Black Bauhinia
phpfuck_fixed vwfhoqufqijnof - IrisSec
plugin not_really - IrisSec
ponydb Reaver - 5h0rt
ponydb zeyu2001 - Social Engineering Experts
pow_erful zeyu2001, TheMythologist, Angmar (me), Fawl, rainbowpigeon, seabass, lim_yj - Social Engineering Experts
Pwn Warmup Eth007 - TeamlessCTF
Pwn Warmup whoamiT - 0nlyFlags
Pwn Warmup downbtn - down_button
pwnies_please zeyu2001 - Social Engineering Experts
pwnies_please vwfhoqufqijnof - IrisSec
pwnies_please stackdynamic - ohm
pwnies_please 0b3t - BYU Cyberia
PwnyOS Zero Day Part 1 BrownRice - RiceGang
PwnyOS Zero Day Part 2 BrownRice - RiceGang
PwnyOS: Hidden Hard Drive BrownRice - RiceGang
Q-Rious Transmissions zeyu2001 - Social Engineering Experts
Q-Rious Transmissions loulous - ECSC Team France
Q-Rious Transmissions Polymero - K3RN3L4RMY
ropfuscated redoste - ECSC Team France
ropfuscated None - None
Seabass Seabass - Social Engineering Experts
should’ve had a v8 Sieberrsec - Sieberrsec
should’ve had a v8 whoamiT - 0nlyFlags
signals DaBaddest - Red Knights
signals bob123 - Social Engineering Experts
signals nobodyisnobody - RootMeUpBeforeYouGoGo
smorga’s bored Yir - ECSC Team France
smorga’s bored not_really - IrisSec
speakeasy not_really - IrisSec
speakeasy Reverse engineer - ARESx
SUPER Louis - SoloQ
SUPER zeyu2001 - Social Engineering Experts
SUPER skat - IrisSec
SUPER Eth007 - TeamlessCTF
Tablet 1 Legoclones - BYU Cyberia
Tablet 1 Seabass - Social Engineering Experts
Tablet 1 skat - IrisSec
Tablet 2 Captain - MuddySports
Tablet 2 Seabass - Social Engineering Experts
Tablet 2 Legoclones - BYU Cyberia
Tablet 2 skat - IrisSec
Tedious Blupper - thehackerscrew
Tedious Legoclones - BYU Cyberia
Tedious Fawl - Social Engineering Experts
toobeetootee Louis - SoloQ
toobeetootee asssss - aaasss
toobeetootee Eth007 - TeamlessCTF
Twitch Plays PwnyOS BrownRice - RiceGang
vaudeville PwN_3v3rY7h1nG - PwN_3v3rY7h1nG
wasmbaby Sleipner - R49n4r0k
wasmbaby Legoclones - BYU Cyberia
wasmbaby ComdeyOverflow - ComdeyOverflow
wasmbaby CultOfNull - CultOfNull
wasmcloud vwfhoqufqijnof - IrisSec
Welcome to UIUCTF’21 RJCyber - wackers
Welcome to UIUCTF’21 Fawl - Social Engineering Experts
Welcome to UIUCTF’21 test - test
yana Neptunian - FireShell (played solo as “Neptunians” this time)
yana zeyu2001 - Social Engineering Experts
yana zkldi - IrisSec