ctf_aria

write up ctf by ariafatah

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Project maintained by ariafatah0711 Hosted on GitHub Pages — Theme by mattgraham

soal

Run the Python script and convert the given number from decimal to binary to get the flag.
Download Python script

hint

• Look up a decimal to binary number conversion app on the web or use your computer’s calculator!
• The str_xor function does not need to be reverse engineered for this challenge.
• If you have Python on your computer, you can download the script normally and run it. Otherwise, use the wget command in the webshell.
• To use wget in the webshell, first right click on the download link and select ‘Copy Link’ or ‘Copy Link Address’
• Type everything after the dollar sign in the webshell: $ wget , then paste the link after the space after wget and press enter. This will download the script for you in the webshell so you can run it!
• Finally, to run the script, type everything after the dollar sign and then press enter: $ python3 convertme.py

solve

wget https://artifacts.picoctf.net/c/24/convertme.py

python3 convertme.py
# If 57 is in decimal base, what is it in binary base?
# Answer: 00111001
# That is correct! Here's your flag: picoCTF{4ll_y0ur_b4535_722f6b39}

flag

picoCTF{4ll_y0ur_b4535_722f6b39}