pynasm

python to nasm assembly conversion, with cpu control.

• x86 64bits only for now.

This allows to create:

• shellcodes
• PIC relocatable low-level code
• infections (for red-teaming)
• obfuscation

Disclaimer

Don't use this for creating malicious payloads!

Usage

python3 pynasm.py shellcode.py
nasm -f bin shellcode.nasm

Emulate with SCEMU for testing

./scemu -f shellcode -vv -6

Demo

https://www.youtube.com/watch?v=o072bXNtxmg

Examples

check the examples folder.

Control blocks

Comparing strings

API Call

TODO:

• use pushad/popad on prologe/epiloge to isolate registers on functions?
• support local vars
• rax = [0x1a, 0x3b, 0xff, 0x00]
• elif