The term "ultrahack" in the context of SAMP could refer to advanced modifications or exploits that players use to gain an advantage or achieve unique effects within the game. These could range from simple scripts that automate certain tasks to complex systems that alter game mechanics.

SA-MP is governed by GTA San Andreas physics. UltraHack destroys them:

At its core, UltraHack is a sophisticated .ASI plugin injected into the GTA: San Andreas directory. Unlike simple trainers that only give you infinite health, UltraHack is designed specifically for SAMP’s netcode. It bypasses standard anti-cheat protections to give the user an overwhelming advantage in roleplay (RP) and deathmatch (DM) servers.

Place an invisible, indestructible vehicle in the sky (at z: 1000.0). Normal players can't see it or touch it. Cheaters using "vehicle spawner" hacks will spawn inside it. Instant log of their IP and GUID.