How to get OS X 10.8.3 Mountain Lion running in ESXi 5

First you need to obtain the vmdk files from the Soul Dev Team.

They are located here - > Link

Once you download everything you need, you will need to copy the unlocker files to the ESXi box.

Navigate to OS X 10.8 Mountain Lion Retail VMware Image\VMware Unlocker - Mac OS X Guest\VMware 8.x Series\VMware ESXi Unlocker

You need to copy the Unlocker.ESXi and the install.sh.

If you don't already have SSH enabled here is how you do it -> Link

Next SCP the files (replace x.x.x.x with your IP)

If you are using OS X
scp -v Unlocker.ESXi root@x.x.x.x:/tmp
scp -v install.sh root@x.x.x.x:/tmp

If you are using Windows I suggest you use putty(Link)
C:\Program Files (x86)\PuTTY>pscp.exe "Unlocker.ESXi" root@x.x.x.x:/tmp

Now SSH to the ESXi box.

Type: cd /tmp -> Enter

Type chmod 777 * -> Enter

Type ./install.sh -> Enter

Reboot

Run VMware converter (Link)

Boot up the vm and go through the installer

You need to remove the network adapter and add another one.  This time it will pull a dhcp address.

You need to install the update fixer and then apply the latest patches.  Now at this point vmware tools will install correctly.

Sources: Link