AlushPacker

Free plan Windows

What AlushPacker is

AlushPacker is a Windows utility for packing native Portable Executable (.exe) files for in-memory execution. Its builder compresses the executable with LZAV and encrypts it using a custom XTEA implementation. At runtime, a reflective loader decrypts and decompresses the embedded program, then loads it from memory without disk I/O or use of the Windows loader. The project says this can make static analysis and reverse engineering with tools such as IDA Pro or Ghidra more difficult. Listed support covers x86 and x64 executables, including native console, GUI, and legacy EXE files. The loader can resolve normal and delay-loaded imports by name or ordinal, handle relocations, register SEH, and run TLS callbacks. An optional -l key option makes the output request a password before execution. The release ZIP contains packer.exe for creating packed executables. AlushPacker is free and its source code is under the MIT License, which permits use, modification, distribution, sublicensing, and sale subject to its conditions. The project invites code improvements, bug reports, and feature suggestions for maintainer review.

Who it suits

It suits Windows users working with native PE executables who need in-memory execution and the listed packing options. The project also welcomes contributions and bug reports for maintainer review.

What it does well

Supports x86 and x64 executables.
Handles console, GUI, and legacy EXE files.
Optional password prompt before execution.
Source code is released under the MIT License.

What to know first

Windows is the only listed platform.
The tool is for PE executable files.

Plans

Plan	Billed and limits	Price
Free	MIT-licensed software · Windows PE executables	Free

As github.com lists them, read 4 Oct 2026. The maker's own page has the final word.

Getting started

Open the project page at https://github.com/Alon-Alush/AlushPacker.
Download the release ZIP containing packer.exe.
Run packer.exe to generate a packed PE executable.
Optionally use the -l key setting to make the output request a password before execution.

Verdict

AlushPacker is a focused Windows PE packing utility with a free MIT-licensed release. Review its listed executable support and in-memory loading approach before use.

Questions

How much does AlushPacker cost?

The Free plan costs nothing. The software is MIT-licensed.

Which platforms and file types does it support?

It supports Windows and Portable Executable (.exe) files, including x86 and x64 native console, GUI, and legacy executables.

Where can I get AlushPacker?

The project page is on GitHub, and its release ZIP contains packer.exe for generating packed executables.

What does the packer do to an executable?

The builder compresses it with LZAV and encrypts it with a custom XTEA implementation. At runtime, the reflective loader decrypts and decompresses it, then loads it from memory.

Can a packed output require a password?

Yes. The optional -l key setting makes the output file request a password before executing.

Facts from AlushPacker's own pages

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
Architecture support: The listed features include x64 and x86 support. · 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
Download: The release page says its zip contains packer.exe for generating packed PE executables. · github.com, 4 Oct 2026
Executable types: The listed features include native console, GUI, and legacy EXE support. · 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
Founded: 2025 · github.com, 28 Sept 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
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
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
Password locking: The optional -l key option makes the output file request a password before executing. · github.com, 4 Oct 2026
Purpose: AlushPacker is a reflective PE packer that enables in-memory execution of native .exe files. · 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

Where AlushPacker stands on Freedom251

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