Ropemporium x86_64 bad chars

bad chars Introduction The challenge is described on the ropemporium site : https://ropemporium.com/challenge/badchars.html with some useful indications. The good, the bad Dealing with bad characters is frequently necessary in exploit development, you’ve probably had to deal with them before while encoding shellcode. “Badchars” are the reason that encoders such as shikata-ga-nai exist. When constructing your ROP chain remember that the badchars apply to every character you use, not just parameters but addresses too.