Proxyshell email enumerate
author: ewater
inspire by https://github.com/dmaasland/proxyshell-poc
usage: proxyshell-enumerate.py [-h] -u U -c C
ProxyShell example
optional arguments:
-h, --help show this help message and exit
-u U Exchange URL
-c C charset: all, alpha, alphanum, not default charset then search the keyword