100% Unbootability on YMSG

Over the last several weeks Yahoo! has started "patching" their servers against the buffer boot exploit. Their "patch" consists of getting rid of the disconnection rule entirely when packet data is pending against you in the buffer. Nowadays if you were to be bombed with a booter you will NOT be disconnected regardless of what type the booter is (even if it's some hot new exploit it won't matter).

What does this mean? This means that of the 61+ servers to chat on 6 of them I've found to be protected against all boots. Here is the following list of them (I tested all of them and here are my results at the time of this post):

Unbootable Servers:

- cs1.msg.dcn.yahoo.com
- cs2.msg.dcn.yahoo.com
- cs40.msg.dcn.yahoo.com
- cs50.msg.dcn.yahoo.com
- cs55.msg.dcn.yahoo.com
- cs58.msg.dcn.yahoo.com

Now that the cat's out of the bag you can use one of these servers on ANY chat program for Yahoo! Chat and be completely unbootable only as long as there's no local program flaws in your choice of chat program. Our BDP option is a TCP window scale option (at the socket level) plus a randomization of these servers (from the pool of protected servers).

Who deserves to be credited solely for this discovery? Venom, Brock and myself. Venom/Mike made me aware of the fact that certain people weren't affected by the buffer boot exploit. After looking into a couple of things I logically deduced all the complexities down to the chat servers themselves that are providing this type of protection for you.

The rest is history...