File Signatures (Magic Bytes)

This repository contains a Markdown table of common file signatures (magic bytes) and their corresponding Python 3 byte strings. This is useful for:

• Crafting polyglot files (e.g., image + script hybrids)
• Bypassing upload filters by mimicking file types

🛠️ Usage

If you'd like to add a file signature (magic bytes) to any file with Python3, here's a generalized example:

# Read the original file content
file_content = open("file.extension", "rb").read()

# Define the magic bytes you want to prepend (e.g., for a GIF file)
magic_bytes = b"\x47\x49\x46\x38\x39\x61"  # GIF89a

# Combine the signature with the original content
file_content = magic_bytes + file_content

# Optionally, write it back out
with open("output_with_signature", "wb") as f:
    f.write(file_content)

You can replace the magic_bytes value with any of the signatures from Python3 Hex Signature Table.

📄 File Signatures

• Python3 Hex Signature Table: Complete Markdown table with:
  • Offset
  • File Extension(s)
  • Description
  • Python 3 byte string (ready to use)

📚 Source

Data was originally extracted and cleaned from Wikipedia’s list of file signatures.

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This project is intended for educational, testing, and research purposes only. Use Responsibly