This tools is an improved version of the CVE-2018-9995 wrote by gwolfs,and is for learning use only。Do not use for illegal purposes，all the consequences resulting from this are your own.The orginal version is wrote by ezelf and is on https://github.com/ezelf/CVE-2018-9995_dvr_credentials Thanks ezelf.
tow methods,you can read the README.md in the method1 or method2,I recommend the method1.