PyX86

: Description : Emulate in Python a small subset of x86 ISA in order to run a specific piece of code.

: Status : Dormant

Notes

• diStorm3 has a possibly relevant approach:

About diStorm3, currently, I work hard on implementing the instructions'
templates of real 80x86 integer instructions. So every 80x86 instruction
become a set of Virtual Opcodes.

For example: MOV EAX, EBX, is translated into: ASSIGN(REG(0), REG(3)). All
these virtual opcodes are actually nodes of expression trees. When this is
all done, you will be able to translate a stream of instructions into an
expressions tree and do whatever you just wish with this tree, may it be,
analyzing, rebuilding, parsing, translation to high level language, etc.

Code

• @@TODO: Upload code.

Links

Potentially useful tools/libraries:

• diStorm64 -- Python disassembler library for AMD64
• PyASM User's Guide V. 0.2 (PyASM announcement)

x86 ISA information:

• x86 Assembly Programming (Was: x86 Assembly Programming)
• 80386 Programmer's Reference Manual
• 80386 Programmer's Reference Manual -- Opcode Jcc
• Intel x86 JUMP quick reference
• 8086 Flags
• Flags Management and Register Renaming

One option I considered was translating x86 assembly to Python bytecode:

• Python Byte Code Instructions
• Ann: Revival of the BytecodeHacks
• BytecodeHacks documentation
• pyasm 0.2 - dynamic x86 assembler for python

Other

• Let's Build a Compiler
• PyEmu -- discovered after the fact, also: Pyemu, PyEmu, PyEmu: A multi-purpose scriptable x86 emulator, PyEmu