CTF challenges & writeups

7364 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
RevEng #xor-decryption #ghidra	BYUCTF 2023	–	Reverse	files wu 1
Sassie #anti-debugging	BYUCTF 2023	–	Reverse	files wu 1
Shellcode #shellcode #restricted-shellcode	BYUCTF 2023	–	Pwn	files wu 1
bad2 #deobfuscation	BYUCTF 2023	–	Reverse	files wu 1
frorg #ret2libc #stack-buffer-overflow	BYUCTF 2023	–	Pwn	files wu 1
obfuscJStor #javascript-deobfuscation	BYUCTF 2023	–	Reverse	files wu 1
urmombotnetdotnetcom_1 #error-based-info-disclosure #duplicate-registration	BYUCTF 2023	–	Web	files wu 1
xkcd 2637 #puzzle-solver	BYUCTF 2023	–	Misc	files src wu 1
Big_JPG #lsb-steganography #steghide	BlueHens 2023	24.61	Misc	files wu 1
Blue_Hens #esoteric-language #vm-reversing	BlueHens 2023	24.61	Reverse	files wu 2
Bussin #custom-file-format #qoi	BlueHens 2023	24.61	Reverse	files wu 1
Classic_Checkers #constraint-solving #lisp	BlueHens 2023	24.61	Reverse	files wu 3
ElectroNES #nes-reversing #6502	BlueHens 2023	24.61	Reverse	files wu 1
Greatest_Hits_1_of_4 #nested-encoding	BlueHens 2023	24.61	Crypto	files wu 1
Hide_n_Seek #steganography #morse-code #steghide	BlueHens 2023	24.61	Crypto	files wu 2
Least_Significant_Color #lsb-steganography	BlueHens 2023	24.61	Misc	files wu 2
RSA_School_1st_Grade #rsa #known-prime	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_2nd_Grade #rsa #factordb	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_3rd_Grade #rsa #common-modulus-attack	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_4th_Grade #rsa #d-to-factorization	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_5th_Grade #rsa #low-exponent #cube-root	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_6th_Grade #rsa #hastad-broadcast #crt	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_7th_Grade #rsa #fermat-factorization	BlueHens 2023	24.61	Crypto	files wu 1
RSA_School_8th_Grade #rsa #fermat-factorization	BlueHens 2023	24.61	Crypto	files wu 1
Turing_Complete #google-apps-script	BlueHens 2023	24.61	Misc	files wu 1
Discord_Admin_Bot #python-injection #octal-escape	CSAW 2023 Quals	21.80	Misc	files wu 1
intro #source-reading	CSAW 2023 Quals	21.80	Misc	files wu 1
0ff_Again_On_Aga1n #binary-encoding #color-to-binary #image-decode	DEADFACE 2023	–	Crypto	files wu 1
B1Tz_and_B0tZ #multi-layer-encoding #binary #hex #rot13	DEADFACE 2023	–	Crypto	files wu 1
Cereal_Killer_01 #reversing #ghidra #stack-string-decode #debugger-patch	DEADFACE 2023	–	Reverse	files wu 2
Cereal_Killer_02 #reversing #xor-rotating-key #known-plaintext	DEADFACE 2023	–	Reverse	files wu 2
Cereal_Killer_04 #java-reversing #jar-decompilation #procyon	DEADFACE 2023	–	Reverse	files wu 1
Cereal_Killer_05 #reversing #gdb #memory-search	DEADFACE 2023	–	Reverse	files wu 2
Coin_Code #caesar-cipher	DEADFACE 2023	–	Crypto	files wu 1
HAM_JAM #morse-code #codablock-barcode #vigenere	DEADFACE 2023	–	Crypto	files wu 1
Letter_Soup #word-search #rot13	DEADFACE 2023	–	Crypto	files wu 1
My_Daily_Macros #vba-macro-analysis #xlsm #office-document	DEADFACE 2023	–	Reverse	files wu 1
Off_the_Rails #rail-fence-cipher	DEADFACE 2023	–	Crypto	files wu 1
Tin_Balloon #audio-steganography #audacity-reverse #deepsound	DEADFACE 2023	–	Forensics	files wu 1
Whats_the_Wallet #powershell-analysis #base64	DEADFACE 2023	–	Forensics	files wu 1

Challenges