You can browse the reconstructed source code. JD-GUI is a standalone graphical utility that displays Java source codes of “.class” files. The following line shows that a JAR file has been created. In this case, the file is “x” on the desktop. To use it, open the terminal and write ”d2j-dex2jar –d /file location”. This is an application that helps convert APK file (android) to JAR file in order to view the source code. To load a EXE file, go the “Opening folder” in yellow color, which is shown in a red square in the above screenshot.Īfter loading, you will have the following view where you can change the binaries.

To open it, go to Applications → Reverse Engineering → ollydbg Generally, it is used to crack the commercial softwares. Emphasis on binary code analysis makes it particularly useful in cases where the source is unavailable. OllyDbg is a 32-bit assembler level analyzing debugger for Microsoft Windows applications.

In this chapter, we will learn about the reverse engineering tools of Kali Linux.

Cracking software with ollydbg