DCTF 2021

This is a beginner to intermediate level CTF competition. With this CTF we want to introduce more people into the field of cybersecurity. It features web, crypto, rev, pwn, and misc challenges.

Infrastructure provided by NIL (part of Conscia)

Pwn 7

Challenge	Has
Baby_bof #stack-buffer-overflow #ret2libc #got-leak	files wu 3
Hotel_ROP #stack-buffer-overflow #ret2libc #pie	files wu 3
Just_another_heap #heap #null-pointer-write #write-what-where #got-overwrite	files wu 1
Magic_trick #write-what-where #got-overwrite	files wu 3
Pinch_me #stack-buffer-overflow #variable-overwrite	files wu 3
Pwn_sanity_check #stack-buffer-overflow #ret2win	files wu 3
Readme #format-string #stack-leak	files wu 3

Reverse 6

Challenge	Has
Bell #reversing #algorithm-replication #interactive	files wu 3
Hansel_und_Gretel #reversing #bit-extraction #bit-position-table	files wu 1
Hercules #reversing #z3 #constraint-solving #matrix	files wu 1
Just_In_Time #reversing #dynamic-analysis #breakpoint-flag-extraction	files wu 3
Tiny_interpreter #reversing #custom-interpreter #bytecode	files wu 2
Unlimited_Power #file-format-analysis #garmin-fit #fit2csv	files wu 1

Crypto 10

Challenge	Has
A_Simple_SP_Box #substitution-permutation-network #block-cipher #chosen-plaintext #key-recovery	files wu 2
Data_Recovery	files
Forgotten_secret #docker-image-forensics #layer-extraction #leaked-ssh-key	files wu 1
Julius_ancient_script #caesar-cipher #shift-cipher	files wu 3
Just_Take_Your_Time #3des #time-based-key #pwntools-automation	files wu 3
Lockpicking #lfsr #cows-and-bulls #state-recovery	files wu 1
Private_Encryption_Mistake #rsa #partial-private-key-recovery #ocr	files wu 1
Scooby-Doo	files
Strong_password #zip-cracking #zip2john #john	files wu 3
This_one_is_really_basic #base64 #encoding	files wu 2