An open-source x64/x32 debugger for windows.
If you want to either go full injectable dll or just external exe with injected shellcode to make the Minecraft game itself call the auto attack function, then you're going to want to familiarize with programs such as Cheat Engine, ollydbg or x64dbg, and either IDA Pro or Ghidra. These are the tools that you can use to actually hack and reverse-engineer programs. Injecting code will require learning how to use either the memory library(via including memory.h or memory.dll) or standard C#/C++ libraries to call functions such as ReadProcessMemory() and WriteProcessMemory() to read and write data to and from the Minecraft process so that you can make the game call it's own functions or change data values, etc.
Don't make fun plz this took 5mins
2 projects | reddit.com/r/ProgrammerHumor | 9 May 2022
1 project | reddit.com/r/REGames | 21 Feb 2022
x64dbg - An open source X64/32 debugger for Windows
1 project | reddit.com/r/CKsTechNews | 27 Jan 2022
An open source X64/32 debugger for windows
1 project | news.ycombinator.com | 27 Jan 2022
As promised: a guide on how to run your own Infini-D 4.5 render farm
1 project | reddit.com/r/retrocgi | 6 Dec 2021