Tools for Repacking

[Masquerade]

LEGO Worlds: No DAT Patch for Build 3833060

• Change the byte at location 4247CA from 74 to EB in LEGO_Worlds_DX11.exe.
• This will allow the game to run with unpacked, decompressed DAT archives.
• Thanks to acidicoala for working with me on this and to our mutual friend m0xf for the original method.
• Unpack the DAT archives using the BMS script linked here: https://www.fileforums.com/showpost....8&postcount=15

Before:


After:


Just a taster of what's to come

[L33THAK0R]

do you happen to know what the significance behind the byte change is? A few months ago I (unsuccessfully) attempted to figure out the patching process but didn't have much luck even after extensive analysis of the executable with Ghidra, I did however note the byte change but alas was unable to determine the significance.

[Masquerade]

Originally Posted by L33THAK0R

do you happen to know what the significance behind the byte change is?

I plan to write a full post about our findings with acidicoala but to answer your question in short:

Originally Posted by acidicoala

Lol, I can already see what's going on. EB is hex for JMP (unconditional jump) opcode, while 74 is opcode for JE (jump if equal)