CTF challenges & writeups

327 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
Control_Freak_1 #custom-cipher-reversing	LYKNCTF 2026	–	Reverse	files wu 1
Control_Freak_2 #splitmix64-prng	LYKNCTF 2026	–	Reverse	files wu 1
Ez_Pwn #signed-integer-overflow	LYKNCTF 2026	–	Pwn	files wu 1
FU_Career #sql-injection-into-outfile	LYKNCTF 2026	–	Web	files wu 1
Follow_The_Layer #blockchain-transaction-tracing	LYKNCTF 2026	–	Forensics	files wu 1
H34P_D3V1L #tcache-poisoning	LYKNCTF 2026	–	Pwn	files wu 1
I_HATE_THIS_APP #static-string-analysis	LYKNCTF 2026	–	Reverse	files wu 1
I_HATE_THIS_APP_REVENGE #aes-ctr-fixed-key	LYKNCTF 2026	–	Reverse	files wu 1
Return_to_Lose #ret2win	LYKNCTF 2026	–	Pwn	files wu 1
Waguri2 #brainfuck-esolang	LYKNCTF 2026	–	Reverse	files wu 1
World_Cup_1 #lsb-steganography	LYKNCTF 2026	–	Forensics	files wu 1
World_Cup_2 #polyglot-appended-zip	LYKNCTF 2026	–	Forensics	files wu 1
traffic #http-object-extraction	ISITDTU 2023 Quals	37.00	Misc	files wu 1
GIFT #type-juggling #lfi (local-file-inclusion)#sql-injection	TetCTF 2023	53.89	Web	files wu 1
ImageServicesViewer #ssrf #prototype-pollution #url-parsing-bypass	TetCTF 2023	53.89	Web	files wu 2
casino #business-logic-flaw #negative-value	TetCTF 2023	53.89	Crypto	files wu 1
casino2 #prng-prediction #golang	TetCTF 2023	53.89	Crypto	files wu 1
algebra #elliptic-curve-recovery	TetCTF 2022	36.72	Crypto	files wu 1
newbie #ret2libc #canary-bypass #prng	TetCTF 2022	36.72	Pwn	files wu 2
shares #linear-algebra #secret-sharing	TetCTF 2022	36.72	Crypto	files wu 1
shares_v2 #meet-in-the-middle (mitm)#linear-algebra	TetCTF 2022	36.72	Crypto	files wu 1
one_time_beach #xor-known-plaintext	ISITDTU 2021 Quals	23.08	Crypto	files wu 1
babyformat #format-string	TetCTF 2021	25.00	Misc	files wu 2
cache_v2 #refcount-overflow #use-after-free (uaf)	TetCTF 2021	25.00	Misc	files wu 1
babyshellcode #shellcode-side-channel	ISITDTU 2019 Quals	23.38	Misc	files wu 1
iz_heap_lv1 #tcache-poisoning	ISITDTU 2019 Quals	23.38	Misc	files wu 3
iz_heap_lv2 #poison-null-byte	ISITDTU 2019 Quals	23.38	Misc	files wu 3
tokenizer #stack-pivot	ISITDTU 2019 Quals	23.38	Misc	files wu 1
dead_note_lv1 #oob-index	ISITDTU 2018 Quals	23.38	Misc	files wu 3
dead_note_lv2 #unsafe-unlink	ISITDTU 2018 Quals	23.38	Misc	files wu 1
dead_note_lv3 #house-of-force	ISITDTU 2018 Quals	23.38	Misc	files wu 1
pwn01 #format-string #got-overwrite #ret2libc	WhiteHat 2018 Quals	–	Misc	files wu 3
pwn02 #off-by-one #null-byte-poisoning #tcache #heap-overlap	WhiteHat 2018 Quals	–	Misc	files wu 3
Boring_APK #android-native-reversing #meet-in-the-middle (mitm)	BKISC 2026	–	Reverse	files wu 1
X_Et_Et	TetCTF 2024	74.41	Web	files wu 1
MailService	TetCTF 2023	53.89	Pwn	files wu 1
NewYearBot	TetCTF 2023	53.89	Web	files wu 1
animals	TetCTF 2022	36.72	Web	files wu 1
crackme-pls	TetCTF 2022	36.72	Reverse	files wu 1
hidden	TetCTF 2022	36.72	Reverse	files wu 1

Challenges