Metasm: Assembler, disassembler, compiler, linker and debugger

Metasm is a cross-architecture assembler, disassembler, compiler, linker and debugger. It is written in pure Ruby, with no dependency.

It has some advanced features such as live process manipulation, GCC/Microsoft Visual Studio-compatible preprocessor, automatic backtracking in the disassembler (similar to “slicing”), C headers shrinking, Linux/Windows/remote debugging API interface, a C compiler/decompiler, a gdb-server compatible debugger, and various advanced features.

For now, the following architectures are supported:

• Intel IA32 (16/32/64bits)
• MIPS
• PPC.

The following file formats are supported:

• Raw (for shellcodes)
• MZ, PE/COFF (32 and 64 bits)
• ELF (32 and 64 bits)
• Mach-O (incomplete) and UniversalBinary
• a few other (a.out, xcoff, nds).

Metasm has been integrated into Metasploit, however the Metasploit trunk is not necessarily synced with the latest version.