How to Disassemble and Debug Executable Programs on Linux, Windows and Mac OS X? The Interactive Disassembler Professional (IDA Pro) is an extremely powerful disassembler distributed by Hex-Rays. Although IDA Pro is not the only disassembler, it is the disassembler of choice for many malware analysts, reverse engineers, and vulnerability analysts. The program is published by Hex-Rays (http://www.hex-rays.com), which provides a free version for noncommercial uses that is one version less than the current paid version. It is now version 5.0. IDA Pro will disassemble an entire program and perform tasks such as function discovery, stack analysis, local variable identification, and much more. IDA Pro includes extensive code signatures within its Fast Library Identification and Recognition Technology (FLIRT), which allows it to recognize and label a disassembled function, especially library code added by a compiler. IDA Pro is meant to be interactive, and all aspects of its disasse