aPACK

File Format
Name	aPACK
Ontology	Electronic File Formats Compression Executable compression aPACK
Released	1997

aPACK is an executable compression utility developed by Jørgen Ibsen, a.k.a. Jibz. It supports .EXE and .COM formats. It runs on DOS, and 32-bit Windows.

It has some relationship to X-pack for Executable.

Disambiguation

This aPACK is not related to apack, a component of the atool archive management utility.

Identification

Based on information from the file command, compressed EXE files have bytes 8e c0 b9 08 00 f3 a5 4a 75 eb 8e c3 8e d8 33 ff be 30 00 05 at offset 53.

For compressed COM files, the byte sequence 50 a4 ff d5 73 appears somewhere early in the file.

Software

• aPACK download page
• Oldskool DOSEXE collections → Executable Tools Pack → packers/apack.*

Links

• aPACK website