Nycat.rar -

Move the .class files from the extracted nycat folder into the minecraft.jar .

To use the files inside nycat.rar , you must extract them and move them to your Minecraft directory. 1. Extract the Files Download an archive tool like WinRAR or 7-Zip. nycat.rar

You must delete the META-INF folder inside minecraft.jar to prevent the game from crashing. Move the

Compressed archives are a common way to hide malware. If you downloaded nycat.rar from an untrusted site, follow these steps: WinRAR vulnerability exploited by two different groups nycat.rar