AlushPacker

Summary

AlushPacker is a Windows tool for packing native Portable Executable (.exe) files for in-memory execution. Its builder compresses files with LZAV and encrypts them using a custom XTEA implementation. At runtime, a reflective loader decrypts and decompresses the embedded executable, then loads it from memory without disk I/O or help from the Windows loader. The project says this can hinder static analysis and reverse engineering with tools such as IDA Pro or Ghidra. Listed support includes x86 and x64, plus native console, GUI, and legacy EXE files. Loader capabilities include resolving normal and delay-loaded imports by name or ordinal, relocations, SEH registration, and TLS callbacks. An optional -l key setting makes the output request a password before execution. The release ZIP contains packer.exe for creating packed executables. The source is MIT-licensed, with contributions and bug reports welcomed for maintainer review.

Who it is for

AlushPacker is for Windows users working with native PE executables who need in-memory loading and packing. Its listed analysis-resistance features may interest users working in reverse engineering or malware analysis.

Compared on executable packers

Free plan

Yesgithub.com

Supported platforms

Windowsgithub.com

Binary formats

Portable Executable (.exe)github.com

Protection features

Yesgithub.com

Architecture support

32/64-bitgithub.com

License model

perpetualgithub.com

Facts

Purpose

AlushPacker is a reflective PE packer that enables in-memory execution of native .exe files.github.com · 4 Oct 2026

Analysis resistance

The project says packing can hinder static analysis and reverse engineering with tools such as IDA Pro or Ghidra.github.com · 4 Oct 2026

Compression and encryption

The builder compresses the executable with LZAV and encrypts it using a custom implementation of XTEA.github.com · 4 Oct 2026

Execution

At runtime, its reflective loader decrypts and decompresses the embedded executable and manually loads it from memory without disk I/O or help from the Windows loader.github.com · 4 Oct 2026

Executable types

The listed features include native console, GUI, and legacy EXE support.github.com · 4 Oct 2026

Password locking

The optional -l key option makes the output file request a password before executing.github.com · 4 Oct 2026

Loader capabilities

The technical features include normal and delay-loaded import resolution by name or ordinal, relocations, SEH registration, and TLS callbacks.github.com · 4 Oct 2026

Download

The release page says its zip contains packer.exe for generating packed PE executables.github.com · 4 Oct 2026

License

The source code is released under the MIT License, which permits use, copying, modification, distribution, sublicensing, and sale subject to its conditions.github.com · 4 Oct 2026

Support and contributions

The project welcomes code improvements, bug reports, and feature suggestions for maintainer review.github.com · 4 Oct 2026

Maker

The maker's site identifies Alon Alush and describes itself as a blog documenting his Windows reverse engineering and malware analysis work.alon-alush.github.io · 4 Oct 2026

Company

Founded

2025github.com · 28 Sept 2026

Where it ranks on Everything Xiaomi

• Best Executable Packers in 2026#5 of 27

Sources

• github.com/Alon-Alush/AlushPacker· checked 4 Oct 2026
• github.com/Alon-Alush/AlushPacker/releases/tag/v1.· checked 4 Oct 2026
• github.com/Alon-Alush/AlushPacker/blob/main/LICENS· checked 4 Oct 2026
• alon-alush.github.io· checked 4 Oct 2026