---
# System prepended metadata

title: '[TFCCTF 2021](https://ctftime.org/event/1501)'
tags: [ctf, '2021']

---

# [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)
