exepack

Rekkrunchy with fixed pack ratio analysis

Pure Java unpacker for Microsoft EXEPACK.

Kings of the Beach (Electronic Arts, MS-DOS, 1988). 59 files, 524,839 bytes: an installed DOS tree, not a disc, and the smallest object in this collection. Three formats derived from the bytes, an EXEPACK decompressor repaired, and eight passwords recovered from one's-complement obfuscation.

HeroQuest (MS-DOS, Gremlin Graphics, 1991-92): measurements of an installed game directory - EXEPACK, the 26x19 board rebuilt from 24 quest files, accents remapped onto lower-case ASCII, and the code that reproduces every figure

Byte-level study of Mega Man (PC/DOS, 1990): 29 loose files, 346,995 bytes. Unpacks the EXEPACK'd executable, identifies the one PackBits variant the whole game uses, and closes .SCN/.BLK/.FRM/.STA/.BIN by arithmetic. Renders the credits (the object's only attribution) and recovers the twelve copy-protection answers.

File-format documentation for POP-CORN (LACRAL software, MS-DOS, 1988): the .PPC level grid, the .HSC score table, a Microsoft EXEPACK image identified after eight failed signature searches, and 2,418 bytes of XOR-obfuscated credits inside it. 13.0927 % of 169,530 bytes identified. Documentation only, no game assets.