openreliant-safedisc

Recovers StarLancer's game executable from its SafeDisc 1 wrapper, for the OpenReliant analysis: the Ghidra project and the tables tablegen derives read it from game/decrypted/LANCER.EXE. The OpenReliant engine itself never needs it; it reads only the game's data files. It needs your own copy of the game: no game files are included.

zig build                       # zig-out/bin/safedisc
zig build test                  # the tests build their own inputs and need no game files
zig-out/bin/safedisc decrypt <game>/install/LANCER.ICD <openreliant>/game/decrypted/LANCER.EXE

Command	Does
safedisc info <icd>	Sections, encryption state, import state
safedisc key <icd>	Recovers the key by searching all 2^32
safedisc decrypt <icd> <out> [--key <hex>]	Writes the readable image
safedisc imports <icd> [--key <hex>]	Recovers the API names SafeDisc hides

docs/safedisc.md describes the scheme, the key recovery, the hidden imports and what a runnable image still needs. src/pe.zig is a copy of OpenReliant's PE reader.

The key

This release's recovered TEA key is 0x434B4DAD. The full 128-bit key is that word four times, so its bytes are AD 4D 4B 43 per word. It is kept here so it need not be searched for again:

safedisc decrypt LANCER.ICD LANCER.EXE --key 434B4DAD

Licensed under the Mozilla Public License 2.0.