$ ctf42

Hardware CTF challenges

146 Hardware CTF challenges from 42 CTFs (2021–2026), 14 with writeups.

Top hardware techniques

#i2c 2 #hardware 2 #pcap-analysis 2 #firmware 1 #bootloader 1 #pic18f-microcontroller-reversing 1 #arduino-seven-segment 1 #correlation-power-analysis 1 #logic-gate-circuit 1 #avr-firmware-reversing 1 #ascii-value-stego 1 #uart-logic-analyzer 1 #xor-logic-circuit 1 #verilog-reversing 1 #eeprom 1

Challenges

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Challenge CTF Weight Has
Strange_Transmission L3akCTF 2025 24.43 files
The_Cursed_Console ApoorvCTF 2025 24.10 files
To_The_Moon BITSCTF 2025 – files
Water_Tank bi0sCTF 2025 95.79 files
Wooly Auvergnhack 2025 – files
dotdotdot IrisCTF 2025 34.30 files src
found_in_madras bi0sCTF 2025 95.79 files
illegal_beeps bi0sCTF 2025 95.79 files
lost_in_madras bi0sCTF 2025 95.79 files
ulation BITSCTF 2025 – files
zitf Auvergnhack 2025 – files
Alien_Circuit Akasec 2024 23.15 files
Ancient_Ahh_Display niteCTF 2024 – files
Celestial L3akCTF 2024 24.43 files
Communication_Gateway L3akCTF 2024 24.43 files
Crash_Landing DownUnderCTF 2024 68.04 files
Cube_Sounds CTFZone 2024 Quals 73.82 files
DUCTF DownUnderCTF 2024 68.04 files
Friday ASIS 2024 Finals 66.25 files
I_See DownUnderCTF 2024 68.04 files
Layout L3akCTF 2024 24.43 files
Mic_Mimic niteCTF 2024 – files
No_visible_signs ASIS 2024 Finals 66.25 files
Not_my_Fault L3akCTF 2024 24.43 files
Seek_Quence niteCTF 2024 – files
Sounds_Nice DownUnderCTF 2024 68.04 files
Squinty 0xL4ugh 2024 25.00 files
The_Door DownUnderCTF 2024 68.04 files
Torando ASIS 2024 Finals 66.25 files
U_ARe_T_Detective niteCTF 2024 – files
VHDLCG L3akCTF 2024 24.43 files
eXORbitant L3akCTF 2024 24.43 files
e_cart ASIS 2024 Finals 66.25 files
sirkit DownUnderCTF 2024 68.04 files
Baby_NFC p4ctf 2023 Quals 70.78 files
Baby_Tap p4ctf 2023 Quals 70.78 files
Bleep_1 UMDCTF 2023 – files
Clutter UMDCTF 2023 – files
EP_815 UMDCTF 2023 – files
ESPMyAdmin insomnihack 2023 Quals 21.38 files