sslh is available for Mac OS X via MacPorts. If you have
MacPorts installed on your system you can install sslh by
executing the following in the Terminal:

port install sslh

Also, the following is a helpful launchd configuration that
covers the most common use case of sslh. Save the following
into a text file, e.g.
/Library/LaunchDaemons/net.rutschle.sslh.plist, then load it
with launchctl or simply reboot.

----BEGIN FILE----
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Disabled</key>
	<false/>
	<key>KeepAlive</key>
	<true/>
	<key>Label</key>
	<string>net.rutschle.sslh</string>
	<key>ProgramArguments</key>
	<array>
		<string>/opt/local/sbin/sslh</string>
		<string>-f</string>
		<string>-v</string>
		<string>-u</string>
		<string>nobody</string>
		<string>-p</string>
		<string>0.0.0.0:443</string>
		<string>--ssh</string>
		<string>localhost:22</string>
		<string>--tls</string>
		<string>localhost:443</string>
	</array>
	<key>QueueDirectories</key>
	<array/>
	<key>RunAtLoad</key>
	<true/>
	<key>StandardErrorPath</key>
	<string>/Library/Logs/sslh.log</string>
	<key>StandardOutPath</key>
	<string>/Library/Logs/sslh.log</string>
	<key>WatchPaths</key>
	<array/>
</dict>
</plist>

----END FILE----