OllyDbg is a specialized program for Windows that allows you to debug executable files and dynamic link libraries. The application features a simple graphical user interface and requires minimal knowledge of the assembly process. The syntax highlighting of the code is also supported. If you need a dedicated development utility, you may use Visual Studio.

Operation

After launching the software, all you need to do is specify the path to the executable file. The debugger includes a code analyzer that detects loops, branches, constants, procedures, tables and lines containing text data. It is possible to display information in HEX, ASCII or UniCode format.

Moreover, the utility enables you to decrypt program code written in the C language. The application is also able to work with PE headers, which contain information necessary to load the executable file into memory.

Debugging

With the help of the tool, you can perform step-by-step debugging with logging of the entire process. You have the ability to create simple and conditional breakpoints. The function of heuristic analysis of the stack and recognition of return addresses to the parent procedure is supported.

Additionally, the software allows you to create individual configuration files for debugging different types of applications. It is also possible to add third-party plugins and extensions.

Features

free to download and use;
compatible with modern Windows versions;
gives you the ability to debug EXE and DLL files;
it is possible to add third-party plugins and extensions;
you can view detailed log information.