Port msmailprobe to msf

[clee-r7]

Port msmailprobe(Nick Powers) + Cleanup for GO bridge

OWA (Outlook Webapp) is vulnerable to time-based user enumeration attacks.
This module leverages all known, and even some lesser-known services exposed by default
Exchange installations to enumerate users. It also targets Office 365 for error-based user enumeration.

Identify Command

• Used for gathering information about a host that may be pointed towards an Exchange or o365 tied domain
• Queries for specific DNS records related to Office 365 integration
• Attempts to extract internal domain name for onprem instance of Exchange
• Identifies services vulnerable to time-based user enumeration for onprem Exchange
• Lists password-sprayable services exposed for onprem Exchange host

Userenum (o365) Command

• Error-based user enumeration for Office 365 integrated email addresses

Verification

• Start msfconsole

• use auxiliary/scanner/msmail/exchange_enumerator

• set RHOSTS <target>

• run

• Verify the result is as expected

• set Command userenum

• set OnPrem true and (set UserName or UserNameFilePath) OR set O365 true and (set Email or EmailFilePath)

• run

• Verify the result is as expected

[busterb]

These merge commits are going to confuse things since the don't have any relationship to metasploit-framework's history. Can you squash them please?

[clee-r7]

messed up branch: bah!

[busterb]

You don't have to close the PR to fix a branch. Just rebase, squash, and force push back to the branch.

[clee-r7]

fixed branch

[clee-r7]

github won't allow me to reopen a force pushed branch :(