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1 | 1 | # libdestruct |
| 2 | + |
| 3 | +**Native structs made Pythonic.** |
| 4 | + |
| 5 | +libdestruct is a Python library for defining C-like data structures and inflating them directly from raw memory. It is designed for reverse engineering, binary analysis, and debugger scripting — anywhere you need to make sense of packed binary data without writing boilerplate. |
| 6 | + |
| 7 | +With libdestruct you can: |
| 8 | +- Define C structs using Python type annotations |
| 9 | +- Read and write typed values from raw memory buffers |
| 10 | +- Follow pointers, including self-referential types (linked lists, trees) |
| 11 | +- Work with arrays, enums, and nested structs |
| 12 | +- Parse C struct definitions directly from source |
| 13 | +- Snapshot values and track changes with freeze/diff/reset |
| 14 | + |
| 15 | +## Installation |
| 16 | + |
| 17 | +```bash |
| 18 | +pip install git+https://github.com/mrindeciso/libdestruct.git |
| 19 | +``` |
| 20 | + |
| 21 | +## Your first script |
| 22 | + |
| 23 | +```python |
| 24 | +from libdestruct import struct, c_int, c_long, inflater |
| 25 | + |
| 26 | +class player_t(struct): |
| 27 | + health: c_int |
| 28 | + score: c_long |
| 29 | + |
| 30 | +memory = bytearray(b"\x64\x00\x00\x00\x39\x05\x00\x00\x00\x00\x00\x00") |
| 31 | + |
| 32 | +lib = inflater(memory) |
| 33 | +player = lib.inflate(player_t, 0) |
| 34 | + |
| 35 | +print(player.health.value) # 100 |
| 36 | +print(player.score.value) # 1337 |
| 37 | + |
| 38 | +# Write a new value back to memory |
| 39 | +player.health.value = 200 |
| 40 | +print(player.health.value) # 200 |
| 41 | +``` |
| 42 | + |
| 43 | +You can also skip the Python definition and parse C directly: |
| 44 | + |
| 45 | +```python |
| 46 | +from libdestruct.c.struct_parser import definition_to_type |
| 47 | + |
| 48 | +player_t = definition_to_type(""" |
| 49 | + struct player_t { |
| 50 | + int health; |
| 51 | + long score; |
| 52 | + }; |
| 53 | +""") |
| 54 | + |
| 55 | +player = player_t.from_bytes(b"\x64\x00\x00\x00\x39\x05\x00\x00\x00\x00\x00\x00") |
| 56 | +print(player.health.value) # 100 |
| 57 | +``` |
| 58 | + |
| 59 | +## Project Links |
| 60 | + |
| 61 | +Documentation: [docs/](docs/) |
| 62 | + |
| 63 | +## License |
| 64 | + |
| 65 | +libdestruct is licensed under the [MIT License](LICENSE). |
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