# [TFCCTF 2021](https://ctftime.org/event/1501) ###### tags: `ctf` `2021` {%hackmd theme-dark %} # Crypto ## `HOLIDAY` ![](https://i.imgur.com/xIHIBLB.jpg) ### Description: - Got a string that's written in some language which is hard to recongnize : `Maui: mai hele mai i kēia lā aia nā ʻīlio` - Simply threw this string to Google Translation (and found out it's Hawaiian language ) - ![](https://i.imgur.com/Bqk9sWS.jpg) - Combined the hint from the host: - ![](https://i.imgur.com/VCHtP8l.png) ### Got flag: - `TFCCTF{don't_come_today_there_are_dogs}` ## `SEA LANGUAGE 1` ![](https://i.imgur.com/f5Qz0z9.png) ### Description: - Got a file: `slt.txt.` - When opening the file, it is shown as below: ![](https://i.imgur.com/xXgwAPg.jpg) - At first glance, seeing there are `.` and `-` in there. Two thoughts came into mind. - One is Morse code - The other is binary (0 and 1) - Attempted to solve that with Morse code first, and thus threw the message to [Morse Code Translator](https://morsecode.world/international/translator.html). Got lucky to get printable ASCII characters on the first try. ![](https://i.imgur.com/REYTrcs.jpg) ### Got flag: - `TFCCTF{WH4T-AR3-Y0U-S1NK1NG-AB0UT?!!!?}` ## Result: ![](https://i.imgur.com/AuYsSNu.jpg)