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Silenci0 / SMAC

Sourcemod Anti-Cheat
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Anti Speedhack bypass #35

Closed lunatixxx closed 3 years ago

lunatixxx commented 4 years ago

Usually the anti speedhack plugin does a good job at blocking this kind of cheat, but it looks like it can be bypassed now (L4D2). At least it detected the cheater but the plugin was not able to block it, the player had a VAC ban on his profile already so it is confirmed cheat. Basically he teleported me with his jockey out of the map, the detection came after delayed.

Video link : https://streamable.com/ypcg3

02/01/2020 - 05:57:08: [smac_speedhack.smx | 0.8.7.2] riley (ID: STEAM_1:1:418677735 | IP: 72.143.253.188) is suspected of using speedhack. Map: c1m1_hotel | Origin: 0 0 0 | Angles: 6 83 0 | Weapon: weapon_jockey_claw | Team: 3 | Latency: 140ms

borzaka commented 4 years ago

The Anti Speedhack module is disabled by default, because it detects lags as speed hacking, and it would cause many false positives. Of course it detects true speedhackers, but because it's disabled by default, it will just leave a notify in the logs.

lunatixxx commented 4 years ago

This module checks for abnormal speeds on clients and attempts to block them. It runs passively in the background to prevent speedhacks from working. Be aware that a client lagging severely can mimic the effects of a speedhack, and as a result, this module will not take action on clients other than slowing them

It does work actually many cheaters were wondering why their speedhack wasn't functioning and this was confirmed by the aimbot detection who followed. It slowdown them to the normal speed but it does not ban automatically. I don't even remember having a false positive with this plugin, this must be 99% right i will say.

CanadianJeff commented 4 years ago

on my server a player was standing still and later incap the SMAC was saying he was speedhacking while on the ground not even moving

borzaka commented 4 years ago

From the wiki:

This module checks for abnormal speeds on clients and attempts to block them. It runs passively in the background to prevent speedhacks from working, as well as notifying admins if a player is suspected of using such a cheat.

Be aware that a client lagging severely can mimic the effects of a speedhack, and as a result, this module will not take action on clients other than slowing them down.

lunatixxx commented 3 years ago

I had recently something similar who happened with the survivor taken by the jockey again, teleported under the map but it did not trigger a detection. So while i'm not skeptical on the fact the profile i mentioned was a cheater this still make me wonder what kind of bug this is, something related to collision bug in the map or maybe the tickrate ? Just to let you know even if this plugin is outdated anyway.

CanadianJeff commented 3 years ago

the teleporting jockey is a common problem and has been for several years now

lunatixxx commented 3 years ago

From what i understand it is a cheat named airstuck teleportation. Why nobody tried to patch or detect it ? (this is the job of Valve but you know...)