🤦Ascee? Asskey?

43 Solves

Ooga booga what is ASCII

Background Knowledge

ASCII, otherwise known as the American Standard Code for Information Interchange 🤮, is a character encoding standard used to represent text in computers and communication devices.

ASCII uses 7 bits to represent 128 different characters, which includes characters, numbers letters and punctuation.

For example, the Uppercase English alphabet begins at decimal 65 and ends at decimal 90 in ASCII.

Solution

We are given an encoded flag.txt file that contains numbers separated by underscores, as hinted by the challenge, we can assume that these numbers represent the ASCII values of the flag.

The solution would be to convert each decimal value into an ASCII representation.

solve.py

with open('flag.txt', 'r') as f:
    flag = f.read().strip()

ascii_flag = ''
for char in flag:
    ascii_flag += str(ord(char)) + '_'

print(ascii_flag)
# CTF101{pyth0N_AScii??}