Tags: cryptography crypto ascii
Rating:
## Description
* **Name:** [Broken Keyboard](https://2019.peactf.com/problems)
* **Points:** 50
* **Tag:** Crypto
## Tools
* Firefox Version 60.8.0 https://www.mozilla.org/en-US/firefox/60.8.0/releasenotes/
* ASCII Cipher/Decipher https://www.dcode.fr/ascii-code
## Writeup
Download the file called enc.txt (4fc5d4517a98bd97fede504d6f5e42bc) through the link where we find a [ASCII](https://ascii.cl/es/referencias.htm) code.
```bash
root@1v4n:~/CTF/peaCTF2019/crypto/Broken_Keyboard# wget https://shell1.2019.peactf.com/static/a993b6d91714b32556129ca0167b97ed/enc.txt
root@1v4n:~/CTF/peaCTF2019/crypto/Broken_Keyboard# md5sum enc.txt
4fc5d4517a98bd97fede504d6f5e42bc enc.txt
root@1v4n:~/CTF/peaCTF2019/crypto/Broken_Keyboard# file enc.txt
enc.txt: ASCII text
root@1v4n:~/CTF/peaCTF2019/crypto/Broken_Keyboard# cat enc.txt
112 101 97 67 84 70 123 52 115 99 49 49 105 115 99 48 48 108 125
```
We use the ASCII online tool to decode the message >
or with the following python script
```python
#! #!/usr/bin/env python
l = [112, 101, 97, 67, 84, 70, 123, 52, 115, 99, 49, 49, 105, 115, 99, 48, 48, 108, 125]
s = "".join([chr(c) for c in l])
print s
```
```bash
root@1v4n:~/CTF/peaCTF2019/crypto/Broken_Keyboard_GRANTED# python get_flag.py
peaCTF{4sc11isc00l}
```
### Flag
```
_____ _______ ______ ___ _ __ __ _ ___ ___ ___
/ ____|__ __| ____/ / || | /_ /_ (_) / _ \ / _ \| \ \
_ __ ___ __ _| | | | | |__ | || || |_ ___ ___| || |_ ___ ___| | | | | | | || |
| '_ \ / _ \/ _` | | | | | __/ / |__ _/ __|/ __| || | / __|/ __| | | | | | | | \ \
| |_) | __/ (_| | |____ | | | | \ \ | | \__ \ (__| || | \__ \ (__| |_| | |_| | | / /
| .__/ \___|\__,_|\_____| |_| |_| | | |_| |___/\___|_||_|_|___/\___|\___/ \___/|_|| |
| | \_\ /_/
|_|
```
