CTF: Hackvent 2019
Link to challenge: https://academy.hacking-lab.com
Date Completed: 19 December 2019
Link to challenge: https://academy.hacking-lab.com
Date Completed: 19 December 2019
Challenge
HV19.19 ?
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Introduction |
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???????????????⛺❗️??????️?????????????????⁉️????????????????????⛪???????????❤️????????????????????????????????????????????⛴???????????????????⛄??⏳?????????????????????????????????????????????????????????????????????????????✨???????????⛲??????????⛵?????????????????? ❗️➡️ ㉓ ??????❗️➡️ ??㊷ ? ⌘ ?⏩⏩ ???❗️ ?㉓❗️❗️ ? ⌘ ➡️? ㊷ ? ㉓ ⌘❗️❗️? ?????????????❤️??❤️???????⛪???? ❗️➡️ ? ??????????? ❗️➡️ ? ? ? ? ➡️ ??⁉️ ➡️ ?? ?❗️?? ? ? ??❗️???❗️????❗️❗️❗️ ➡️ ? ↪️??❗️? ???❗️???????❗️? ☣️??????❗️❗️➡️ ✓? ⌘ ?⏩⏩???❗️??❗️❗️?? ㊷ ? ? ⌘❗️❗️ ➡️ ⌃? ? ⌘ ???❗️❗️➡️ ^??⌃➖?㉓❗️➗?????❗️❗️❌^❌?⌘❗️➡️ ⎈ ↪️ ⌘ ◀ ??❗️?❎?? ㊷ ? ? ⌘❗️❗️➖ ?? ??❗️➕??❗️➖??❗️➖??❗️➕????❗️?✖??????❗️? ? ?⎈❗️❗️? ??????❗️?✍✓ ⎈ ⌘ ????❗️❗️?????✓ ??❗️❗️❗️➡️ ⌘↪️⌘ ? ?♀️???????❗️???⌘❗️? ? |
Solution
We see a bunch of emoji and immediately think its EmojiCode!
Initially we want to play around with the code so we go tio.run/#emojicode6 and enter in our code.
Upon running our code we get a prompt and entering random input crashes our program to panick and crash:
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? ➡️ ??⁉️ ➡️ ?? ? Program panicked: ? |
Amazingly, based on the prompt alone of Santa being confused around a lock emoji (?) , I decide to try the key emoji (?) as input.
This actually gave me the flag making the time to completion only 8 minutes!
Unintended but I’ll take it.
Flag: HV19{*<|:-)____\o/____;-D}
