Welcome, hackers. This is a live, playable archive of DEF CON CTF challenges.
Brought to you by the Order of the Overflow, 2018-2021 host of DEF CON's official CTF.
Challenges are not particularly malicious or dangerous, but they are vulnerable by design (that's the game!). Containers isolate them, but it's up to you to play safely.
We're archiving more challenges and appreciate issue reports and suggestions. Just be mindful that running the CTF is tough and has priority. General archive FAQ
If you ran a cool CTF and want to give a shot at archiving your challenges, ping us at team@oooverflow.io
Start here!
dc2021q
say-hellooo
101 points
easy good_first_challenge recon
dc2019q
know_your_mem
109 points
intro hinted good_first_challenge
dc2020q
babymaze
122 points
intro reversing
dc2020q
introool
135 points
intro shellcoding pwn
Easy but... can you hack fast?
Harder challenges
dc2021q
mra
114 points
reversing pwn
dc2021q
nooopster
115 points
reversing pwn easy
dc2020q
ooobash
120 points
reversing
dc2019q
vitor
131 points
crypto reversing android
dc2019q
gloryhost
135 points
reversing pwn rust
dc2019q
ooops
137 points
web
dc2020q
mooodem
139 points
reversing pwn
dc2020q
biooosless
145 points
reversing shellcoding
dc2021q
rick
147 points
reversing
dc2019q
LCARS000
156 points
reversing shellcoding
dc2019q
tania
182 points
crypto
dc2019q
ASRybaB
201 points
crypto reversing hinted
dc2021q
tiamat
315 points
reversing
dc2020q
keml
343 points
pwn kernel
dc2021q
cozen
500 points
guest_challenge reversing pwn
dc2021q
rad
500 points
reversing pwn
dc2020q
maybe
500 points
pwn
dc2021f
barb-metal
1000 points
reversing pwn finals
dc2020f
nooode
1000 points
web finals
dc2020f
pinboooll
1000 points
reversing finals
Achievements
Cryptocurrentist
Solve all crypto challenges.
Hardlike
Get 500 points
Higher than top
Get 6000 points
Introduced
Solve all intro challenges
Pwnstar
Solve all pwn challenges
Qualmost
Get 2000 points
Serious hacking
Get 10000 points
Speedster
Solve all speedruns
Starter
Get 100 points
Toplike
Get 4000 points
You're welcome
Solve all welcoming challenges.
resreveR
Solve all reversing challenges