[ Game Trainer ] Assassins Creed 4 – Black Flag Stealth/Invisibilitity hack

Assassins-Creed-IV-Black-Flag-Logo

Here is a basic trainer for Assassins Creed 4 – Black Sails.
The game, although fun, is full of annoying sneaking missions. This trainer can assist here.
By searching for a specific array of bytes that represent a compare and a jump and replacing them with no-operation commands a sort of invisibility hack is created. By searching for an array of bytes and not relying on fixed addresses it is possible for this trainer to work on multiple versions, if not all versions.

The array of bytes to search for is: 0x80, 0x7d, 0xff, 0x00, 0x74, 0x0a, 0x5e

This should be replaced with six NOP’s.
The Address in my version of the game is 0x018a239b

Image of memory before patching:

ac4before1

Image of memory after patching:

ac4after2

I have attached source code to automatically patch it.

The trainer is designed as a launcher, and as such must be placed within the games root directory and then executed. The trainer will then launch Assassins creed, whilst searching for the relevant arrays to patch. The hack is completed once a call to WriteProcessMemory is made and six NOP’s are written to the address determined through pattern-searching.

Image of the trainer/launcher is displayed below:

launcher

[ CODE ] Trainer.c

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~ by Rhys Mossom on September 29, 2014.

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