AlushPacker
AlushPacker is a Windows tool for packing native Portable Executable (.exe) files for in-memory execution.
What AlushPacker is
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.
Good
- Supports x86 and x64 executables.
- Handles console, GUI, and legacy EXE files.
- Optional password prompt for packed output.
- Source code is MIT-licensed.
Watch out
- Available for Windows only.
- Targets native Portable Executable (.exe) files.
- Execution uses a custom XTEA implementation.
Who it suits
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.
Verdict
AlushPacker provides a focused Windows PE packing workflow with in-memory loading and architecture support. Its scope is limited to Windows executables, and its password prompt is optional.
Plans and prices
From AlushPacker's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | MIT-licensed software · Windows PE executables |
The facts
Each one read from AlushPacker's own pages, with the date it was checked.
What it does
- Analysis resistance
- The project says packing can hinder static analysis and reverse engineering with tools such as IDA Pro or Ghidra.checked 4 Oct 2026
- Architecture support
- The listed features include x64 and x86 support.checked 4 Oct 2026
- Compression and encryption
- The builder compresses the executable with LZAV and encrypts it using a custom implementation of XTEA.checked 4 Oct 2026
- Download
- The release page says its zip contains packer.exe for generating packed PE executables.checked 4 Oct 2026
- Executable types
- The listed features include native console, GUI, and legacy EXE support.checked 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.checked 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.checked 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.checked 4 Oct 2026
- Password locking
- The optional -l key option makes the output file request a password before executing.checked 4 Oct 2026
- Purpose
- AlushPacker is a reflective PE packer that enables in-memory execution of native .exe files.checked 4 Oct 2026
- Support and contributions
- The project welcomes code improvements, bug reports, and feature suggestions for maintainer review.checked 4 Oct 2026
The company
- Founded
- 2025checked 28 Sep 2026
- Maker
- The maker's site identifies Alon Alush and describes itself as a blog documenting his Windows reverse engineering and malware analysis work.checked 4 Oct 2026
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