CTF challenges & writeups

58 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
nips #tea-cipher #upx-unpacking #mips	BCACTF 2025	–	Reverse	files wu 1
Flagtureiser #java-decompilation	BCACTF 2024	–	Reverse	files wu 1
My_Brain_Hurts #brainfuck	BCACTF 2024	–	Reverse	files wu 1
XOR #xor-decryption	BCACTF 2024	–	Reverse	files wu 1
A_Fun_Game #memory-editing #cheat-engine #dotnet-mono	BCACTF 2021	–	Reverse	files wu 1
Digitally_Encrypted_1 #logic-circuit-reversing #xor-cipher	BCACTF 2021	–	Reverse	files wu 2
Digitally_Encrypted_2 #logic-circuit-reversing #xnor-cipher	BCACTF 2021	–	Reverse	files wu 2
Digitally_Encrypted_2.99999 #logic-circuit-reversing #shift-xor-cipher-inversion	BCACTF 2021	–	Reverse	files wu 1
Digitally_Encrypted_3 #logic-circuit-reversing #shift-add-xor-cipher	BCACTF 2021	–	Reverse	files wu 1
Storytime_The_Opening_Gambit #strings #static-analysis #plaintext-flag	BCACTF 2021	–	Reverse	files wu 1
Storytime_The_Shocking_Conclusion #xor-decoding #static-reversing	BCACTF 2021	–	Reverse	files wu 2
Storytime_The_Tragic_Interlude #xor-decryption	BCACTF 2021	–	Reverse	files wu 2
Wait_this_isnt_C #fortran-reversing	BCACTF 2021	–	Reverse	files wu 2
Trailblazer	BCACTF 2021	–	Reverse	files wu 1
5d_printing	BCACTF 2025	–	Reverse	files
Conundrum	BCACTF 2025	–	Reverse	files
My_Nokia_Broke	BCACTF 2025	–	Reverse	files
Nitro_Nexus	BCACTF 2025	–	Reverse	files
Part_by_Part	BCACTF 2025	–	Reverse	files
Rust_Reversing	BCACTF 2025	–	Reverse	files
bfffl	BCACTF 2025	–	Reverse	files
evm	BCACTF 2025	–	Reverse	files
go_getter	BCACTF 2025	–	Reverse	files
helpful_feedback	BCACTF 2025	–	Reverse	files
malware	BCACTF 2025	–	Reverse	files
math_checker	BCACTF 2025	–	Reverse	files
optimize_me_1	BCACTF 2025	–	Reverse	files
optimize_me_2	BCACTF 2025	–	Reverse	files
skibidi	BCACTF 2025	–	Reverse	files
the_ancients	BCACTF 2025	–	Reverse	files
Broken_C_Code	BCACTF 2024	–	Reverse	files
Crabby	BCACTF 2024	–	Reverse	files
FPS_Frenzy	BCACTF 2024	–	Reverse	files
Palette	BCACTF 2024	–	Reverse	files
Script_Theory	BCACTF 2024	–	Reverse	files
Serene_Abstractions	BCACTF 2024	–	Reverse	files
Snail_Farmer_John	BCACTF 2024	–	Reverse	files
Touch_Tone_Telephone	BCACTF 2024	–	Reverse	files
Touch_Tone_Telephone_Revenge	BCACTF 2024	–	Reverse	files
float_manip	BCACTF 2024	–	Reverse	files

Challenges