Help/Support Unity game crashes when hooked method gets called

ExeRhythm · July 20, 2023

Hi, I'm having a problem with hooking methods in a Unity game using offsets.

When the hooked method gets called, the game crashes. This is how I hook (address taken from il2cpp dumps):

void (*Player_Update)(void* self); 
void _Player_Update(void* self) { 
  Player_Update(self);
} 

void setup() {
  HOOK(0x1B01BE0, _Player_Update, Player_Update);
}

When setting up a menu I'm also targeting UnityFramework:

void setupMenu() {
  menu = [[Menu alloc] 
            ....

  [menu setFrameworkName: "UnityFramework"];

  setup();
}

Does anybody have an idea what could be wrong with the code? Could it be game's anti-cheat? What steps do I take to find the problem. With a debugger and trace back what exactly offsets in the crash log mean? The game is Standoff 2, if that makes a difference. I'm quite confused, sorry for a long question Thanks in advance!

Updated July 20, 2023 by ExeRhythm

Rook · July 20, 2023

Are you using Dopamine jailbreak? They seem to have an issue with hooks right now from our experience.

ExeRhythm · July 20, 2023

Thanks for the reply @Rook. I am indeed running Dopamine. I will try using a palera1n jailbroken device in a moment

ExeRhythm · July 23, 2023

Can't manage to get palera1n working - throws an error, and that's another question why.

Anyway, I tried using same techniques on another Unity game, and hooks work there flawlessly. So I guess it was the anti-cheat after all. Thanks for the help