CTF challenges & writeups

37 challenges in family ⊕ rev:obfuscation ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
obfpyscated #python-obfuscation #xor #aes	RITSEC 2026	–	Reverse	files wu 1
nips #tea-cipher #upx-unpacking #mips	BCACTF 2025	–	Reverse	files wu 1
New_Order #vba-macro-deobfuscation	BrunnerCTF 2025	24.66	Forensics	files wu 1
molly #anti-debugging #instrumentation-callback	TRX 2025	–	Reverse	files wu 1
Fruit_Deals #maldoc #vba-macro #obfuscation	UTCTF 2024	–	Reverse	files wu 1
Tridea #meet-in-the-middle (mitm)#block-cipher #anti-debugging	VolgaCTF 2024 Quals	35.91	Reverse	files wu 1
Obfuscation #obfuscated-c #byte-transform-reversing	1337UP 2023	24.23	Reverse	files wu 3
imPACKful #upx-unpacking	1337UP 2023	24.23	Reverse	files wu 1
flagchecker #scratch-project-reversing #deobfuscation	AmateursCTF 2023	24.54	Reverse	files wu 1
Hollywood #dotnet-reversing #dnspy #string-decryption #anti-debug-bypass	CYBERGON 2023	–	Reverse	files wu 1
Old_Obfuscation #pyinstaller-extraction #pyarmor-deobfuscation	CYBERGON 2023	–	Reverse	files wu 1
What_is_it #autoit-decompilation #script-deobfuscation	CYBERGON 2023	–	Reverse	files wu 1
My_First_C_Program #deobfuscation	DownUnderCTF 2023	46.63	Misc	files wu 1
Give_My_Money_Back #deobfuscation	HeroCTF 2023	–	Reverse	files wu 1
caterpillar #js-deobfuscation	LA 2023	–	Reverse	files wu 2
Python_Garbage_Compiler #python-obfuscation #seeded-prng #xor	PatriotCTF 2023	24.52	Reverse	files wu 1
EtherealCrackme #windows-reversing #anti-analysis	VishwaCTF 2023	22.69	Reverse	files wu 1
padlock #obfuscated-c #quine-reversing	b01lers 2023	36.84	Reverse	files wu 1
x0rr3al #xor #string-obfuscation	vsCTF 2023	23.32	Reverse	files wu 1
Obfuscated #java-reversing #string-obfuscation #per-chunk-check	DaVinciCTF 2022	24.50	Reverse	files wu 1
Confusion #anti-debugging #reversing	VishwaCTF 2022	20.79	Reverse	files wu 1
msfrob #import-obfuscation #aes-decryption	corCTF 2022	24.92	Reverse	files src wu 1
Anti #anti-debugging	ICHSA 2021	–	Reverse	files wu 1
Far_From_The_Weakest_Shell #powershell-deobfuscation	MetaCTF 2021	–	Reverse	files wu 1
YAY #anti-debugging #unpacking	Securinets 2021 Quals	41.71	Reverse	files wu 1
optimized #reversing #self-modifying-code	TSG 2021	–	Reverse	files wu 2
Painting_Windows #anti-debugging #xor #windows-reversing	UMDCTF 2021	–	Reverse	files wu 1
PeTaMorphosis #self-modifying-code	m0leCon 2021 Quals	24.55	Reverse	files wu 1
protector #self-modifying-code	KITCTFCTF 2022	–	Reverse	files wu 1
Ware #upx-unpacking #reverse-engineering	0x41414141 2021	–	Reverse	files wu 2
hash #upx-unpacking #golang-reversing	0x41414141 2021	–	Reverse	files wu 2
Layers #llvm-obfuscation #control-flow-flattening	3kCTF 2021	24.14	Reverse	files wu 1
GaussBot #self-modifying-code	HackPack 2021	24.31	Reverse	files wu 1
antistatic #anti-debugging #crackme	Union 2021	24.34	Reverse	files wu 1
unionware #powershell-deobfuscation #ransomware	Union 2021	24.34	Reverse	files wu 2
JS_is_Awesome #javascript-deobfuscation #xor	VULNCON 2021	–	Reverse	files wu 1
More_than_shellcoding #shellcode #self-modifying-code #mprotect	VULNCON 2021	–	Pwn	files wu 2

Challenges