Silent_Packer

What Silent_Packer is

Silent_Packer is a free, open-source Linux command-line tool for packing and obfuscating ELF and PE binaries. Written in pure C, it works by encrypting a binary’s .text section and decrypting it before execution, and it supports PIE binaries. It handles ELF64, ELF32, PE32+ and PE32 files across 32-bit and 64-bit architectures. Users can choose XOR or AES-128-ECB encryption and one of three packing methods: Section Insertion, Code Cave or Silvio Text Infection. The last method is available only for ELF files. Command-line options cover input and output files, cipher and packing method, alongside help, version, verbose and debug options.

Building from source requires cmake, gcc and nasm. The project is licensed under GNU AGPLv3, and its latest listed release is version 0.1. The project invites bug reports and suggestions for additional formats or cipher methods, and describes its intended use as professional or educational. Its stated limitations include recurring PE-file bugs, particularly with large binaries that have many dynamic libraries, and occasional offset problems with Section Insertion.

Who it suits

Silent_Packer suits Linux users who need a command-line packer for ELF or PE binaries and want to choose a cipher and packing method. Its stated professional or educational purpose may also suit people working in those settings.

Limits

The project reports recurring PE-file bugs, particularly for large binaries with many dynamic libraries, and occasional offset problems with Section Insertion. Silvio Text Infection works only with ELF files.

Getting started

1. Visit the Silent_Packer project website on GitHub.
2. Build from source with cmake, gcc and nasm.
3. Choose an input file, cipher and packing method using the command-line options.
4. Set an output file, then use help, version, verbose or debug options as needed.

Verdict

Choose Silent_Packer if you need a free, Linux command-line tool with several binary formats, cipher choices and packing methods. Look elsewhere if you need a Windows version or cannot work around its reported PE and Section Insertion issues.