r2

R2 is a complete rewrite of Radare. It provides a set of libraries, tools and plug-ins to simplify reverse engineering tasks. Mainly distributed under LGPLv3, each plug-in can have a different license (see r2 -L, rasm2-L, etc.). Project radare started as a simple command-line hex editor focusing on forensic science. Today, r2 is a feature-rich low-level command-line tool that supports scripting using the embedded Javascript interpreter or through r2pipe. R2 can edit files on the local hard drive, view kernel memory, and debug programs locally or through a remote GDB/WINDBG server. R2's extensive architectural support allows you to analyze, simulate, debug, modify, and disassemble any binary file.