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Glitch Cat

  • Description: Our flag printing service has started glitching!
  • Difficulty: Easy

🔎 Solution​

After establishing the connection, we receive a flag string that is partially readable, while the other half appears as characters represented in the form of chr(hex).

'picoCTF{gl17ch_m3_n07_' + chr(0x62) + chr(0x64) + chr(0x61) + chr(0x36) + chr(0x38) + chr(0x66) + chr(0x37) + chr(0x35) + '}'

To decode this, we can use a short and simple Python script to convert the encoded part back into its readable form.

flag = 'picoCTF{gl17ch_m3_n07_' + chr(0x62) + chr(0x64) + chr(0x61) + chr(0x36) + chr(0x38) + chr(0x66) + chr(0x37) + chr(0x35) + '}'
print(flag)

And here is the flag~

┌──(kali㉿kali)-[~/Desktop]
└─$ python script.py         
picoCTF{gl17ch_m3_n07_bda68f75}

🚩Flag​

picoCTF{gl17ch_m3_n07_bda68f75}