CTF challenges & writeups

665 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
Bday_party #image-geolocation-osint	KubSTU 2026	24.83	OSINT	files wu 1
Cipher #passphrase-bruteforce	KubSTU 2026	24.83	Misc	files wu 1
Ouroboros #self-referential-key-decryption	KubSTU 2026	24.83	Reverse	files wu 1
RISC_V. #feistel-key-inversion	KubSTU 2026	24.83	Reverse	files wu 1
STEGO_Subway_2 #ascii-value-stego	KubSTU 2026	24.83	Hardware	files wu 1
The_Deterministic_Fog #lcg-lattice-recovery	KubSTU 2026	24.83	Crypto	files wu 1
Vanilla_raw #byte-stride-extraction	KubSTU 2026	24.83	Forensics	files wu 1
WEB_3_Casino #predictable-blockchain-rng	KubSTU 2026	24.83	Blockchain	files wu 1
PQ #rsa #fermat-factorization #close-primes	VolgaCTF 2024 Quals	35.91	Crypto	files wu 1
Tridea #meet-in-the-middle (mitm)#block-cipher #anti-debugging	VolgaCTF 2024 Quals	35.91	Reverse	files wu 1
cuCRACKME #cuda-reversing #gpu-reversing	VolgaCTF 2024 Quals	35.91	Reverse	files wu 1
Appointment_Book #negative-index	HeroCTF 2023	–	Pwn	files wu 1
Give_My_Money_Back #deobfuscation	HeroCTF 2023	–	Reverse	files wu 1
Referrrrer #referer-bypass	HeroCTF 2023	–	Web	files wu 1
Rope_Dancer #srop	HeroCTF 2023	–	Pwn	files wu 1
balloon #python-jail-escape #chroot-sandbox	Aero 2022	51.22	Pwn	files wu 1
Poly321 #polynomial-inversion	HeroCTF 2022	51.22	Crypto	files wu 1
The_oracles_apprentice #rsa-malleability	HeroCTF 2022	51.22	Crypto	files wu 1
BashD00R #backdoored-bash-binary #code-in-data-section	Aero 2021	35.17	Reverse	files wu 1
BoatLouder #pic18f-microcontroller-reversing #bootloader #firmware	Aero 2021	35.17	Hardware	files wu 1
Dummyper #memory-dump-reversing #xor-self-encryption #known-plaintext-endbr64	Aero 2021	35.17	Reverse	files wu 3
ShellMaster2 #alphanumeric-shellcode #restricted-shellcode #rwx	Aero 2021	35.17	Pwn	files wu 1
EasyAssembly #static-analysis	HeroCTF 2021	35.17	Reverse	files wu 3
Find_Me #reverse-image-search	HeroCTF 2021	35.17	OSINT	files wu 3
Happy_the_Boss #memory-editing	HeroCTF 2021	35.17	Pwn	files wu 1
Transfer #blockchain-osint	HeroCTF 2021	35.17	Crypto	files wu 3
Win_but_twisted #function-pointer-overwrite	HeroCTF 2021	35.17	Pwn	files wu 2
h4XOR #repeating-key-xor	HeroCTF 2021	35.17	Crypto	files wu 3
sELF_control #elf-manipulation	HeroCTF 2021	35.17	Reverse	files wu 1
QR_Codebook #ecb #known-plaintext	VolgaCTF 2021 Quals	32.73	Crypto	files wu 1
Static_Site #crlf-injection #nginx-misconfiguration	VolgaCTF 2021 Quals	32.73	Web	files wu 2
flask-admin #broken-access-control #path-normalization	VolgaCTF 2021 Quals	32.73	Web	files wu 2
Notepad #use-after-free (uaf)#tcache #format-string	VolgaCTF 2020 Quals	32.80	Misc	files wu 2
BuggyPWN #custom-vm-reversing #2d-memory-oob #stack-overflow #printable-shellcode	CTFZone 2018 Quals	23.92	Misc	files wu 2
EZPZ_CRKMEE #avr-firmware-reversing #simavr-emulation #gdb-scripting	CTFZone 2018 Quals	23.92	Misc	files wu 1
FederationWorkflowSystem #aes-ecb #byte-at-a-time-decryption #chosen-prefix	CTFZone 2018 Quals	23.92	Misc	files wu 1
JSZone #js-engine-exploit #type-confusion #valueof-gc-callback #addrof-fakeobj	CTFZone 2018 Quals	23.92	Misc	files wu 1
MobileBank #format-string #got-overwrite #dynelf-leak #ret2system	CTFZone 2018 Quals	23.92	Misc	files wu 3
SignatureServer #winternitz-ots #signature-forgery #checksum-bypass	CTFZone 2018 Quals	23.92	Misc	files wu 1
android_ololo_country_checker #android-reversing #native-library #arm #jni	CTFZone 2018 Quals	23.92	Misc	files wu 2

Challenges