[Discussions]Conquer Packets Flooder

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Originally Posted by androw3349 is there any way that we can code a tool that send packets to the server , and its will be acceptable ? like packets flooder that make the nodes or w/e overload/overflow then crash or make it give connection time out. in the end the point is the ddos protection is self will not block the connection, and the idea is not a ddos tool

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Originally Posted by JohnHeatz So, basically, you are asking if it is possible to DDoS, but then you say not a DDoS tool? Well basically if you overflow a server with packets, with the appropriate "strength" the DDoS protection won't be able to block it, and you will be able to cause a massive DC for players; but as you seem to be familiar with this, you will know that it would need to be a really powerful attack to do such thing.

foreach (Packet packet in list)
                        {
                            packet.GetBytes();
                            int num = new Random().Next(500);
                            Packet packet2 = new Packet(0x7777, true);
                            packet2.WriteAscii(num.ToString());
                            packet2.WriteUInt8((byte) 0);
                            for (int i = 0; i < 750; i++)
                            {
                                security.Send(packet2);
                            }
                            break;
                        }

Quote:

Originally Posted by JohnHeatz So, basically, you are asking if it is possible to DDoS, but then you say not a DDoS tool? Well basically if you overflow a server with packets, with the appropriate "strength" the DDoS protection won't be able to block it, and you will be able to cause a massive DC for players; but as you seem to be familiar with this, you will know that it would need to be a really powerful attack to do such thing.

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Originally Posted by go for it well when it comes to ddosing/dosing i duno a shit but why would you send wrong/unknown packets ? prolly the server will ignore them and this won't really effect it but what about sending a right/knowen packets ? server will make threads for them and it will have more effect , right ? aka when people was ddosing tq the server wasn't effected like when people was using proxies for mining so basically if there is 100 person using 50 miners each sending 1 packet per second server will need to handle 50000 packet per second which cause lag but what about server refusing 5000 unknown packet per second ? it won't even cause lag that's what i thought of , im not sure if that was right or wrong so all in all what i mean is server should refuse unknown packets and accept known ones , so i think flooding server with known ones (which everyone will take a thread) is better than flooding it with unknown packets

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Originally Posted by pro4never Keep in mind that regardless of how many threads you use, you're limited to your connections upload speed. What you are describing is flooding the server with packets (valid or invalid makes little difference) and so unless you can find a specific method which is easy to exploit in how the server handles particular (valid) packets then your attack will have little effect. Binary nukers work by spamming whisper packets. the way the server is coded means that each whisper packet requires itterating through all connected clients and running a string comparison between names. as such there's a ton of strain server side between receiving, decrypting, processing the packet and then running the name check to pull the client you are trying to whisper. Aka CPU strain vs network strain.

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Originally Posted by CptSky If you only think of flooding packets, there is only one way to down a server and it is if you can send more packets than the server can receive and handle. So, you need a better connection and a better computer to hope doing anything to the server. Else, as stated pro4never, the other solution is to spam a packet which is badly handled. It's using the bad design of the emulator. Mostly anything which requires an iteration with a lock (as stated Infamous) will do the thing. In fact, there was a similar way do down my server at some point. It was to go in the Training Ground and attack with thunder extremely fast. As each thunder had a Thread.Sleep for the intonation time, at some point, all clients were disconnected. A packet flooder won't work unless you find a fail in the packet handling.