$ ctf42

#meet-in-the-middle (mitm) CTF challenges

Also written as mitm.

13 CTF challenges using meet-in-the-middle (mitm) from 12 CTFs (2020–2026), 13 with writeups. Mostly Crypto (62%) and Reverse (23%).

Crypto · 8 Reverse · 3 Web · 1 Pwn · 1

Often combined with

#android-native-reversing 1 #knapsack 1 #garbled-circuits 1 #jwt 1 #command-injection 1 #weak-diffie-hellman 1 #arp-spoofing 1 #linear-algebra 1 #aes 1 #bruteforce 1 #diffie-hellman 1 #block-cipher 1 #anti-debugging 1

Challenges

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Challenge CTF Weight Category Has
parallel-the-m0le m0leCon 2021 Quals 24.55 Reverse files wu 3
Calculator TAMUctf 2021 – Pwn files wu 3
MeetMeInMiddle OFPPT 2022 – Crypto files wu 2
Knapsack BackdoorCTF 2023 – Crypto files wu 2
shares_v2 TetCTF 2022 36.72 Crypto files wu 1
Tridea VolgaCTF 2024 Quals 35.91 Reverse files wu 1
4ES CrewCTF 2024 26.89 Crypto files wu 1
Alternating_key_exchange m0leCon 2021 Quals 24.55 Crypto files wu 1
garbled DiceCTF 2021 24.82 Crypto files wu 1
MiTM Securinets 2021 Quals 41.71 Crypto files wu 1
MoozChat PlaidCTF 2020 93.15 Web files wu 1
Boring_APK BKISC 2026 – Reverse files wu 1
4aes Defcamp 2023 Quals – Crypto files wu 1