# UPX
> Universal Packer for eXecutables — compress and decompress PE files

**Category:** [[categories/statically-analyze-code-unpacking|Statically Analyze Code > Unpacking]] | **Tier:** Rich (FOR610)
**Docs:** [https://docs.remnux.org/discover-the-tools/statically+analyze+code/unpacking](https://docs.remnux.org/discover-the-tools/statically+analyze+code/unpacking)

## Usage
```bash
upx -d packed.exe
upx -d packed.exe -o unpacked.exe
```

## Workflows
- [[workflows/unpacking-workflow|Unpacking Packed Executables]] — Step 2: Automated Unpacking

## Related Tools
- [[tools/bytehist|Bytehist]] — Generate byte-usage histograms to visually identify packed o

## FOR610
**Labs:** 4.2
**Sections:** 4

#packer #unpacker #compression