CSAW 2021 Quals

weight 20.54 CTFtime official repo

CSAW CTF is one of the oldest and biggest CTFs with 1216 teams with 1+ points in 2020. Designed as an entry-level, jeopardy-style CTF, this competition is for students who are trying to break into the field of security, as well as for advanced students and industry professionals who want to practice their skills.

Our competition occurs over two rounds: a Qualifying Round in September and a Final Round in November. Both rounds will be online this year.

Web 1

Challenge	Has
Gatekeeping #web #nginx-gunicorn-path-bypass #access-control-bypass	files wu 3

Pwn 6

Challenge	Has
Alien_Math #stack-buffer-overflow #uninitialized-rand #ret2win	files src wu 3
Password_Checker #stack-buffer-overflow #password-check-bypass	files src wu 3
cold #c++-decompression #oob-read-write #small-string-optimization #rop	files wu 1
haySTACK #srand-time-seed-bruteforce #prng-prediction	files wu 2
krypto #kernel-exploit #toctou-race #arbitrary-write #modprobe-path-overwrite #infoleak	files wu 1
word_games #heap #tcache-perthread-corruption #unsorted-bin-leak #libc-2.33	files wu 2

Reverse 6

Challenge	Has
checker #reversing #bit-manipulation #inverse-transform	files wu 3
hardskull	files
macomal	files
ncore #verilog-softcore-reversing #custom-isa #bytecode-crafting #enclave-dump	files wu 3
ransomwaRE #malware-reversing #date-seeded-key #aes-ctr #keystream-reuse	files wu 2
turning_trees	files

Crypto 3

Challenge	Has
Bits #rsa #lsb-oracle #discrete-log #binary-search-factoring	files wu 3
Crack_Me #hash-cracking #salted-sha256 #hashcat	files wu 3
Forgery #elgamal-signature #existential-forgery #unhashed-message #mask-bypass	files src wu 3

Forensics 3

Challenge	Has
Lazy Leaks	files src
Sonicgraphy Fallout	files src
Contact Us	files src

Hardware 3

Challenge	Has
A_Different_Type_of_Serial_Key #hardware #logic-analyzer #spi #i2c #xor-decode	files wu 1
A_Pain_in_the_BACnet #pcap-analysis #bacnet #scapy #protocol-parsing	files wu 3
The_Magic_Modbus #pcap-analysis #modbus #tcp-stream	files wu 2