Duplication of items & server crashing

[dacarlo]

Hi guys Long time user, first time poster here.

I'm one of the admins for a large persistent world in which we've had problems with a dupe hacker. This is someone who logs in and out over and over and produces hundreds of copies of whatever item they're looking to make.

Now I'm not particularly interested in how this feat is performed, but I am interested in protecting against it. When it comes to this stuff I'm a total n00b so would appreciate some guidance.

We're using NWNX on NWN1.69 with all expansions and no haks. It runs on a WindowsXP SP3, patched etc. We've got a MySQL database too.

I'm also aware of a server crash exploit which has been used a few times, and I'm pretty sure someone called acaos might have had a patch for it. Mostly we find the corrupt toons and nuke/ban via the database, but it's fairly trivial to get a new key/IP and start again.

Let me know if y'all need more info, and thanks for reading.

Dac

[Zebranky]

Definitely need more info, but I'll PM you to gather it.
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[dacarlo]

As we discussed the duping thing doesn't use player persistent storage since we don't have any. They seem to generate these things by relogging a lot. At that point lots of hits appear in the log when OnAquire fires and records them aquiring the copies.

If anyone else wants to contact me over this there's more potential crates of beer

[ShaDoOoW]

You need a better item destroying script, basically you got there gap in script because you are destroying items in starting location. If this is not the case, try to strip all effects from players before you will do it (they can come polymorphed, so their true items would be hidden). If its the case, destroy all items in OnClientEnter event, the new character has always 0xp, then set xp to 1 and ensure player can never fall under 1xp.

This may also fix the crashing ex*loit, if the players using container method to do it.
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