implement new signatures

[BJNFNE]

Summary by CodeRabbit

• New Features
  • Added support for recognizing "MD5 Checksum" and "Database" file types.
  • Introduced detection for GIF image files, enabling identification of GIF format files.

[coderabbitai]

Walkthrough

This update introduces two main changes: the addition of new file extension entries ("md5" and "db") to the heuristic extension list, and the creation of a new detection rule script for identifying GIF image files. The heuristic extension list now recognizes "MD5 Checksum" and "Database" formats, while the new script enables the detection of GIF files by checking for the "GIF" signature in binary data. No changes were made to logic or exported entities outside of the new script.

Changes

File(s)	Change Summary
db/Binary/__MiniExtensionsHeuristic_By_DosX.7.sg	Added "md5" and "db" file extensions with corresponding metadata to the recognized extensions list.
db/Binary/image.GIF.sg	Added new detection rule script for GIF images; introduced detect() function for GIF signature detection.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant DetectItEasy
    participant GIFDetectionScript

    User->>DetectItEasy: Provide binary file for analysis
    DetectItEasy->>GIFDetectionScript: Call detect() with binary data
    GIFDetectionScript->>GIFDetectionScript: Check if data starts with "GIF"
    alt Signature matches
        GIFDetectionScript->>DetectItEasy: Return detection result as "Graphics Interchange Format"
    else Signature does not match
        GIFDetectionScript->>DetectItEasy: Return no match
    end
    DetectItEasy->>User: Report detection result

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Possibly related PRs

• add my heuristic script #259: Adds new file extension entries to the same heuristic detection list, expanding recognized formats.
• add new signatures #263: Expands the recognized file extensions in the same heuristic file with new entries and metadata.
• add OBC script #256: Introduces a new detection rule script for a different file format, using a similar detection approach with a detect() function.

Poem

In the warren of bytes where the GIFs now reside,
And checksums and databases no longer must hide,
With new rules and extensions, our toolkit has grown—
The rabbit detects what was once unknown.
Hop, hop, hooray! The formats now play,
In the fields of detection, we’re leading the way!
🐇✨

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between cfcbcad and 0d7bf35.

📒 Files selected for processing (2)

• db/Binary/__MiniExtensionsHeuristic_By_DosX.7.sg (1 hunks)
• db/Binary/image.GIF.sg (1 hunks)

🔇 Additional comments (2)

db/Binary/__MiniExtensionsHeuristic_By_DosX.7.sg (1)

245-246: New extensions integrated correctly
The entries for "md5" (as a text-based checksum) and "db" (as a binary database) are appropriately appended to the heuristic list and respect the existing schema (type: "format", correct bin flags).

db/Binary/image.GIF.sg (1)

1-3: Detection rule header is clear
The file header properly documents the script name, author credentials, and supported format.

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