dCTF 2021 // 14-16 May 2021
- Web > Simple web
- Web > Secure API
- Misc > Encrypted the flag I have
- Misc > Don't let it run
- Misc > Leak Spin
- Misc > Extraterrestrial Communication
- Misc > Powerpoint programming
- Misc > Bad Apple
San Diego CTF (SDCTF) 2021 // 8-10 May 2021
- Crypto > Lost in Transmission
- Revenge > A Bowl of Pythons
- Web > Apollo 1337
- Web > Git Good
- OSINT > hIDe and seek
- OSINT > hIDe and seek 2
- OSINT > Speed Studying
- OSINT > Speed Studying 2
- OSINT > This flag has been stolen
DawgCTF 2021 // 7-8 May 2021
- Crypto > cookin the ramen
- Audio/Radio > Third Eye
- Fwn (Forensics/Web/Network) > Just A Comment
- Misc > Identifications
- Misc > Two Truths and a Fib
UMDCTF 2021 // 16-18 April 2021
- Crypto > Art Class
- Forensics > Not Slick
- OSINT > Justin 1
- OSINT > Justin 2
- OSINT > Justin 3
- OSINT > Nikolai 1
- OSINT > Nikolai 2
- OSINT > Traveling
- OSINT > Vacation
- OSINT > MemeCTF 2 Electric Boogaloo
- Steganography > Coldplay's Flags
- Steganography > Magic
- Steganography > Pickle Rick
- Steganography > Testudo's Pizza
- Web > The Matrix
HackPack CTF 2021 // 16-17 April 2021
- Misc > Aurora
- Reverse > BF means best friend, right?
- Web > "N"ot "G"am"I"ng a"N"ymore in "X"mas
RITSEC CTF 2021 // 9-11 April 2021
- Forensics > 1597
- Intel > APT Interference
- Intel > Bad Traffic
- Intel > Data Breach
- Intel > Finding Geno
- Intel > Music Signs
- Intel > #OSINTChallenge
- REV:BIN > snek
- Web > Robots
ångstromCTF 2021 // 3-7 April 2021
- Binary > tranquil
- Crypto > Exclusive Cipher
- Crypto > Keysar v2
- Crypto > Relatively Simple Algorithm
- Misc > Archaic
- Misc > Fish
- Rev > FREE FLAGS!!1!!
- Web > Jar