$ ctf42

Challenges

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99 challenges · browse all techniques

Challenge CTF Weight Category Has
Borrowed_Memory
#bytecode-vm-emulation#xorshift-table-regeneration#checksum-guided-debugging#xor-decryption
 BDSec 2026 15.62 Reverse files wu 1
Easy_RE_Challenge
#symbol-guided-static-analysis#xor-rol-inversion#decoy-path-elimination
 BDSec 2026 15.62 Reverse files wu 1
Muktir_Shongket
#jit-bytecode-verifier-executor-mismatch#jmp-into-literal#shellcode
 BDSec 2026 15.62 Pwn files wu 1
Night_Shift
#pthread-scheduling-analysis#exhaustive-brute-force#fnv-1a-hash
 BDSec 2026 15.62 Reverse files wu 1
Phantom_Device
#use-after-free (uaf)#refcount-mismatch#tcache-grooming#role-forgery
 BDSec 2026 15.62 Pwn files wu 1
Exceeding_Knight
#laravel-debug-mode-leak
 KnightCTF 2025 18.78 Web files wu 1
Knight_Connect
#login-link-forgery
 KnightCTF 2025 18.78 Web files wu 1
Knights_Droid
#caesar-cipher
 KnightCTF 2025 18.78 Reverse files wu 1
RandomseniorAdleman
#prng-seed-rsa
 KnightCTF 2025 18.78 Crypto files wu 1
Blood_Of_Circuits
#logic-gate-circuit
 KnightCTF 2022 17.38 Hardware files wu 1
Fix_It_Felix
#avr-firmware-reversing
 KnightCTF 2022 17.38 Hardware files wu 1
The_Flag_Vault
#reversed-string
 KnightCTF 2022 17.38 Reverse files wu 3
Jumble KnightCTF 2022 17.38 Crypto files wu 3
Passwd KnightCTF 2022 17.38 Crypto files wu 3
babyshark KnightCTF 2022 17.38 Reverse files wu 2
flag_checker KnightCTF 2022 17.38 Reverse files wu 1
hackers_vault KnightCTF 2022 17.38 Pwn files wu 2
the_encoder KnightCTF 2022 17.38 Reverse files wu 3
whats_your_name KnightCTF 2022 17.38 Pwn files wu 2
Broken_Printer BDSec 2026 15.62 Reverse files
Cold_Start BDSec 2026 15.62 Reverse files
Cordination_password BDSec 2026 15.62 Misc files
Crack_Me_Vault BDSec 2026 15.62 Reverse files
Ekusher_Shobdo BDSec 2026 15.62 Pwn files
Four_Registers BDSec 2026 15.62 Reverse files
Inside_Job BDSec 2026 15.62 Forensics files
E4sy_P3asy KnightCTF 2026 22.21 Reverse files
Knight_Squad_Academy KnightCTF 2026 22.21 Pwn files
KrackM3 KnightCTF 2026 22.21 Reverse files
ReM3 KnightCTF 2026 22.21 Reverse files
ReM3_Again KnightCTF 2026 22.21 Reverse files
net KnightCTF 2026 22.21 Misc files
Buzz_s_Memory_Mission BDSec 2025 15.62 Pwn files
Chant_of_the_Drones BDSec 2025 15.62 Forensics files
Hacker_App BDSec 2025 15.62 Reverse files
KShackZone_s_Phishing_Breach_Investigation BDSec 2025 15.62 Forensics files
Minar_52_Enigma BDSec 2025 15.62 Reverse files
Poisoned_Ledger_hex BDSec 2025 15.62 Forensics files
Quantum_Mirage BDSec 2025 15.62 Crypto files
Rex_s_Counter_Crisis BDSec 2025 15.62 Pwn files