fix pyinstaller, code refactoring

.github/workflows/build.yml

@@ -28,6 +28,10 @@ jobs:
             artifact_name: capa
             asset_name: linux
             python_version: '3.10'
+            # for Ghidra
+            java-version: '21'
+            ghidra-version: '12.0'
+            public-version: 'PUBLIC_20251205'
           - os: ubuntu-22.04-arm
             artifact_name: capa
             asset_name: linux-arm64
@@ -106,6 +110,23 @@ jobs:
         run: |
           7z e "tests/data/dynamic/cape/v2.2/d46900384c78863420fb3e297d0a2f743cd2b6b3f7f82bf64059a168e07aceb7.json.gz"
           dist/capa -d "d46900384c78863420fb3e297d0a2f743cd2b6b3f7f82bf64059a168e07aceb7.json"
+      - name: Set up Java ${{ matrix.java-version }}
+        if: matrix.os == 'ubuntu-22.04' && matrix.python_version == '3.10'
+        uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4.0.0
+        with:
+          distribution: 'temurin'
+          java-version: ${{ matrix.java-version }}
+      - name: Install Ghidra ${{ matrix.ghidra-version }}
+        if: matrix.os == 'ubuntu-22.04' && matrix.python_version == '3.10'
+        run: |
+          mkdir ./.github/ghidra
+          wget "https://github.com/NationalSecurityAgency/ghidra/releases/download/Ghidra_${{ matrix.ghidra-version }}_build/ghidra_${{ matrix.ghidra-version }}_${{ matrix.public-version }}.zip" -O ./.github/ghidra/ghidra_${{ matrix.ghidra-version }}_PUBLIC.zip
+          unzip .github/ghidra/ghidra_${{ matrix.ghidra-version }}_PUBLIC.zip -d .github/ghidra/
+      - name: Does it run (Ghidra)?
+        if: matrix.os == 'ubuntu-22.04' && matrix.python_version == '3.10'
+        env:
+          GHIDRA_INSTALL_DIR: ${{ github.workspace }}/.github/ghidra/ghidra_${{ matrix.ghidra-version }}_PUBLIC
+        run: dist/capa -b ghidra -d "tests/data/Practical Malware Analysis Lab 01-01.dll_"
       - uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
         with:
           name: ${{ matrix.asset_name }}