Post a dump of packets please, or just link to program so it can be analyzed.
Ian Shaffer wrote: > Dear Network Administrator, > > Over the past few months my servers have been brought to their knees > dozens of times through "nuke" style Denial of Service attacks. Simple > put, players start teleporting around, pings gradually start increasing > for all players and the timer slows down. After a couple minutes of > being attacked, you are early frozen from movement and the timer takes a > decade to tick down, and pings are skyrocketed. Players then leave the > server. > > Well earlier this week I "interrogated," pardon the pun, a member of my > community who had made an exclamation that it would start to get real > laggy in one of our servers earlier in the day. That server, our Zombie > Server, started getting nuked just a couple minutes after. I was fairly > certain it was him who started the attack. In the evening, I talked to > this guy, his alias is "ST. GEORGE," and explained to him that I > believed it was him who was "nuking" our servers. I acted very sincere > when I told him that I had logged his IP address and was planning on > filing a formal abuse complaint to his ISP, Road Runner. He somewhat > panicked at hearing this, and confessed as to what he was doing. > > He sent me a link to download the same hacking tool he said he was > using. Hackers Assistant is the program. I scanned the program for any > trojans or viruses it might have, it was clean. I ran it and discovered > a feature called "Nuker." In there it prompted for a server IP address > and port and a box to input a message. One would simply put a server's > info in there, type some random stuff in the message box, and click "Nuke." > > A former member of our community and admitted nuker “ST. GEORGE” tested > the software. I was shocked. It was working, The server was being > attacked just as described above. I held a sense of accomplishment > knowing that I had found the cause of my problems. I therefore began > looking for a way to block this programs abilities. Now I needed to know > what types of servers this program could attack. ST. GEORGE then showed > off nuke attacks on dozens of popular servers in the US and UK, highly > popular servers like 24/7 Office Noob Galore and Zombiemod | > XFactorGaming, and the program worked to bring down each and every one > of them to their knees. There was only one server he was not able to > nuke attack, evidently the #1 CSS server in the United States, > CantStopGaming CS:S. > > This program affects practically every single server in CS:S. The > interesting part of it is that this program doesn't advise usage towards > any particular genre of online infrastructure. ST. GEORGE tried running > this program on CoD servers, BF2 and BF2142 servers, Halo PC servers, > SA:MP servers, and Quake 4 servers. It didn't work on any of those > games. However, it worked on the other popular Source-based game out > today, Team Fortress 2. Every TF2 server ST. GEORGE checked was > nuke-able, with the same effects felt in-game. This leads me to the > conclusion that there must be an exploit in the source engine allowing > this program to nuke all servers using the source engine. > > While our server was getting attacked last time, I gathered critical > data. I've determined that the program does not eat up the server's > bandwidth. Instead, it seems to flood the server with messages/commands, > so much that it tops out CPU usage. Below is a sample of my console as > our server was undergoing a recent attack with the program. Midway > through the data, the perpetrator aborted the nuke attack. You can see > the server recovering as the cpu usage goes down and server FPS comes > back to normal. This data was gathered with 8 others in-game. > > =========================================== > > CPU In Out Uptime Users FPS Players > 96.59 16841.92 3909.91 110 4 10.00 9 > L 04/27/2008 - 01:23:04: rcon from "72.251.244.233:2020": command "stats" > ] rcon stats > CPU In Out Uptime Users FPS Players > 96.04 17937.41 3958.69 110 4 10.00 9 > L 04/27/2008 - 01:23:09: rcon from "72.251.244.233:2020": command "stats" > ] rcon stats > CPU In Out Uptime Users FPS Players > 95.54 17590.70 3970.64 110 > ] rcon stats > CPU In Out Uptime Users FPS Players > 100.00 17354.72 3966.19 110 4 523.25 9 > L 04/27/2008 - 01:23:10: rcon from "72.251.244.233:2020": command "stats" > > ======== HERE THE ATTACK WAS ABORTED ========= > > ] rcon stats > CPU In Out Uptime Users FPS Players > 75.57 16933.90 4148.69 110 4 508.36 9 > L 04/27/2008 - 01:23:11: rcon from "72.251.244.233:2020": command "stats" > ] rcon stats > CPU In Out Uptime Users FPS Players > 75.57 16750.93 4596.00 110 4 509.13 9 > L 04/27/2008 - 01:23:12: rcon from "72.251.244.233:2020": command "stats" > ] rcon stats > CPU In Out Uptime Users FPS Players > 52.55 16518.30 6391.86 110 4 509.97 9 > L 04/27/2008 - 01:23:13: rcon from "72.251.244.233:2020": command "stats" > ] rcon stats > CPU In Out Uptime Users FPS Players > 40.46 16520.83 9229.05 110 4 511.77 9 > L 04/27/2008 - 01:23:13: rcon from "72.251.244.233:2020": command "stats" > ] rcon stats > CPU In Out Uptime Users FPS Players > 40.46 16452.49 11473.37 110 4 514.49 9 > L 04/27/2008 - 01:23:14: rcon from "72.251.244.233:2020": command "stats" > > ============================================ > > > I very much hope that this exploit can be stomped out. My community has > suffered all too much to the hands of the kiddies that run these types > of programs for their own vain pleasure. I speak for server operators > everywhere when I say, this issue must be fixed! > > Thank you very much for taking the time to read my post. I hope some > good will come out of it! > > Sincerely, > David “Eaglewonj” Gaipa > > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, please > visit: > http://list.valvesoftware.com/mailman/listinfo/hlds > > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlds
