write up ctf by ariafatah

ariaf.my.id/ctf_aria/web_exploit/E_WebDecode.html

soal

Do you know how to use the web inspector?
Additional details will be available after launching your challenge instance.

launch istance

Do you know how to use the web inspector?
Start searching here to find the flag

hint

  • Use the web inspector on other files included by the web page.
  • The flag may or may not be encoded

solve

  • saya mencoba berpindah halaman dan menginspect salah satu page yaitu about alt text
  • dan ketika saya inspect saya menemukan kode yang mungkin saja berisi flag alt text
  • lalu saya mencoba untuk mendecode dengan base64 
    echo "cGljb0NURnt3ZWJfc3VjYzNzc2Z1bGx5X2QzYzBkZWRfMDJjZGNiNTl9" | base64 -d
# picoCTF{web_succ3ssfully_d3c0ded_02cdcb59}

flag

picoCTF{web_succ3ssfully_d3c0ded_02cdcb59}