https://github.com/sha0coder/pynasm

Python to nasm compilation
https://github.com/sha0coder/pynasm

Last synced: 6 months ago
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Python to nasm compilation

• Host: GitHub
• URL: https://github.com/sha0coder/pynasm
• Owner: sha0coder
• Created: 2024-03-06T09:10:11.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2025-01-22T18:57:27.000Z (11 months ago)
• Last Synced: 2025-03-27T22:51:08.638Z (9 months ago)
• Language: Python
• Size: 4.93 MB
• Stars: 0
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# 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

generating a relocatable 64bits code blob

```bash

python3 pynasm.py shellcode.py

nasm -f bin shellcode.nasm

ls shellcode

```

or generating an 64bits exe 

```hash

python3 pynasm.py program.py exe

nasm -f win64 program.nasm

x86_64-w64-mingw32-ld program.obj

ls a.exe

```

## Emulate with SCEMU for testing

```bash

./scemu -f shellcode -vv -6

```

## Demo

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

## Examples

check the examples folder.

### WinapiAcces importing winapi lib

![winapi](pics/runtime2.png)

![msgbox](pics/msgbox.png)

### Control blocks

![blocks](pics/blocks.png)

### Comparing strings

![python code](pics/strings_compare1.png)

![emulated binary](pics/strings_compare.png)

### API Call

![api call](pics/api_call1.png)

![emulation](pics/api_call2.png)

![virtual allocs](pics/api_call3.png)

![emulation](pics/api_call4.png)

### Arrays and memory blobs 

![arrays](pics/arrays.png)

## Documentation

https://github.com/sha0coder/pynasm/blob/main/DOCUMENTAITON.md

## TODO:

- modulus with aug assign %=

- len(s) from a parameter

- complex ifs and/or

- elif

- break

- continue

- structures

- alloc 100 with: padding times 100 db 0x00