#### [https://waletsec.github.io/posts/2021-04-26-Ping-pong-HeroCTF.fr.html](https://waletsec.github.io/posts/2021-04-26-Ping-pong-HeroCTF.fr.html)
### You will need

- Text / code editor
- Binary to ASCII conventer (e.g. https://onlinebinarytools.com/convert-binary-to-ascii)

### Solution

- Download `output.txt` file, and open it in a text editor
- Replace (Ctrl + H)
- `PONG` with `0`
- `PING` with `0`
- New line character with nothing
At the end of it you should got
```
01001000011001010111001001101111011110110111000000110001011011100011011001011111011100000011000001101110001101100101111100110001001101010101111101100110011101010110111001111101
```
- Open Binary to ASCII conventer and paste it in

### Flag

Hero{**p1n6_p0n6_15_fun**}

#### Credits

- Writeup by [mble](https://ctftime.org/user/93848)
- Solved by [mble](https://ctftime.org/user/93848)
- WaletSec 2021

#### License

**CC BY 4.0** WaletSec + mble

Original writeup (https://waletsec.github.io/posts/2021-04-26-Ping-pong-HeroCTF.fr.html).