How to empty the 'tempban' table on TeknoMW3:

1. Open Cheat Engine and attach to iw5mp_server.exe
2. Press "Memory View", then press CTRL+J (or go to menu Tools -> Dissect code)
3. Pick "TeknoMW3.dll" and press "Start", and wait it to finish
4. Once it finished, close the window, and press CTRL+ALT+R (or go to menu View -> Referenced strings)
5. CTRL+F -> "g_tempban". Press the first result. On the right you'll see only one offset (address). Double-click it.
6. Now you are on the assembly view. Press "arrow down" till you highlight an instruction like this:

mov [eax*4+XXXXXXXXX],ecx

Those "XXXXXXXX" are the region you wanna fill with zeroes, because that's the "g_tempBan" table which contains banned GUIDs.

The size is 1024 * 4 (4 byte GUIDs, 1024 entries), so to null it, simply add a byte array at the offset you took before with size 4096 bytes, and set everything to 0.