2021-04-26-Ping-pong-HeroCTF.fr

Posted on April 26, 2021

Ping Pong - HeroCTF.fr

You will need

  • Text / code editor
  • Binary to ASCII conventer (e.g.¬†https://onlinebinarytools.com/convert-binary-to-ascii)

Solution

  • Download output.txt file, and open it in a text editor
  • Replace (Ctrl + H)
    • PONG with 0

    • PING with 0

    • New line character with nothing At the end of it you should got

      01001000011001010111001001101111011110110111000000110001011011100011011001011111011100000011000001101110001101100101111100110001001101010101111101100110011101010110111001111101
  • Open Binary to ASCII conventer and paste it in

Flag

Hero{p1n6_p0n6_15_fun}

Credits

  • Writeup by mble
  • Solved by mble
  • WaletSec 2021

License

CC BY 4.0 WaletSec + mble