Hashes, signatures & release identity

A file's display name is easy to change. Begin a mod, launcher, or utility review by identifying the bytes you actually collected. A cryptographic hash allows you to compare those bytes with an exact reference or a later copy. Record the algorithm, original path, file size, acquisition time, and reference source. For a release comparison, match the version, loader, platform, and build variant—not simply the project name.

Authenticode and content hashing answer different questions. A signature examination reports signing information and validation status for supported files. A content hash is a fingerprint of the collected bytes. Neither tells you everything a program can do or whether its use during a game session was authorized.

1. Collect a copy and calculate its SHA-256 before changing or extracting it.
2. Retrieve or identify the official reference for the same build through the project’s own release channel. Do not substitute a random mirror.
3. Compare complete hashes, not filename similarity or a short prefix. Retain the reference URL and release description.
4. For an applicable Windows executable, inspect its Authenticode result separately from its hash comparison.
5. Investigate mismatches by examining packaging, code, dependencies, and behavior; report what the mismatch establishes before interpreting its cause.

Get-FileHash -LiteralPath 'C:\Evidence\sample.jar' -Algorithm SHA256
Get-AuthenticodeSignature -LiteralPath 'C:\Evidence\utility.exe' |
    Select-Object Status, StatusMessage, SignerCertificate

A mismatch means the compared files differ. It can result from a different loader build, a locally rebuilt project, a changed archive, or malicious modification. Determine which explanation is supported. A matching hash ties the file to the reference bytes; it does not establish that the reference is harmless, that every dependency matches, or that the player used only that file.

A valid signature does not guarantee benign behavior. An unsigned Java archive is not automatically suspicious; Windows Authenticode is not a universal trust mechanism for every file format. Do not treat an unsupported or absent signature as a behavioral finding.

• The hash algorithm and complete value are recorded.
• The reference matches the exact build variant.
• Signature and content-identity conclusions are separate.
• No capability claim rests on identity checks alone.

• Microsoft: Get-FileHash ↗
• Microsoft: Get-AuthenticodeSignature ↗

The workflow and scenario are authored investigation guidance. Confirm source-system and parser support for the build you examine.