fixes #1699 Permhash analyzer

api_app/analyzers_manager/file_analyzers/perm_hash.py

@@ -0,0 +1,57 @@
+# This file is a part of IntelOwl https://github.com/intelowlproject/IntelOwl
+# See the file 'LICENSE' for copying permission.
+
+import logging
+import os
+
+from permhash import functions as permhash
+
+from api_app.analyzers_manager.classes import FileAnalyzer
+
+logger = logging.getLogger(__name__)
+
+
+class Permhash(FileAnalyzer):
+    """
+    Create permissions hash of APK, Chrome extensions,
+    Android manifest and Chrome extension manifest files.
+    """
+
+    def run(self):
+        result = {}
+        _, file_extension = os.path.splitext(self.filepath)
+
+        logger.info(f"Started PERMHASH============================> {self.filepath}")
+
+        file_extension = file_extension[1:]
+
+        hash_val = ""
+
+        if file_extension == "apk":
+            hash_val = permhash.permhash_apk(self.filepath)
+        elif file_extension == "xml":
+            hash_val = permhash.permhash_apk_manifest(self.filepath)
+        elif file_extension == "crx":
+            hash_val = permhash.permhash_crx(self.filepath)
+        elif file_extension == "json":
+            hash_val = permhash.permhash_crx_manifest(self.filepath)
+        else:
+            result["error"] = "Invalid file extension."
+
+        # permhash returns False if for some reason the hash value can't be found
+        if hash_val:
+            result["hash"] = hash_val
+        else:
+            result["error"] = "Could not find permissions in the file."
+
+        return result
+
+    @classmethod
+    def update(cls) -> bool:
+        pass
+
+    @classmethod
+    def _monkeypatch(cls):
+        patches = []
+
+        return super()._monkeypatch(patches=patches)

api_app/analyzers_manager/migrations/0078_analyzer_config_permhash.py

@@ -0,0 +1,125 @@
+from django.db import migrations
+from django.db.models.fields.related_descriptors import (
+    ForwardManyToOneDescriptor,
+    ForwardOneToOneDescriptor,
+    ManyToManyDescriptor,
+)
+
+plugin = {
+    "python_module": {
+        "health_check_schedule": None,
+        "update_schedule": None,
+        "module": "perm_hash.Permhash",
+        "base_path": "api_app.analyzers_manager.file_analyzers",
+    },
+    "name": "Permhash",
+    "description": "create a hash of permissions in APK, Android manifest, chrome extension, chrome extension manifest files using [permhash](https://github.com/google/permhash).",
+    "disabled": False,
+    "soft_time_limit": 20,
+    "routing_key": "default",
+    "health_check_status": True,
+    "type": "file",
+    "docker_based": False,
+    "maximum_tlp": "RED",
+    "observable_supported": [],
+    "supported_filetypes": [
+        "application/vnd.android.package-archive",
+        "application/zip",
+        "application/java-archive",
+        "application/octet-stream",
+        "text/plain",
+        "application/x-chrome-extension",
+        "application/json",
+    ],
+    "run_hash": False,
+    "run_hash_type": "",
+    "not_supported_filetypes": [],
+    "model": "analyzers_manager.AnalyzerConfig",
+}
+
+params = []
+
+values = []
+
+
+def _get_real_obj(Model, field, value):
+    def _get_obj(Model, other_model, value):
+        if isinstance(value, dict):
+            real_vals = {}
+            for key, real_val in value.items():
+                real_vals[key] = _get_real_obj(other_model, key, real_val)
+            value = other_model.objects.get_or_create(**real_vals)[0]
+        # it is just the primary key serialized
+        else:
+            if isinstance(value, int):
+                if Model.__name__ == "PluginConfig":
+                    value = other_model.objects.get(name=plugin["name"])
+                else:
+                    value = other_model.objects.get(pk=value)
+            else:
+                value = other_model.objects.get(name=value)
+        return value
+
+    if (
+        type(getattr(Model, field))
+        in [ForwardManyToOneDescriptor, ForwardOneToOneDescriptor]
+        and value
+    ):
+        other_model = getattr(Model, field).get_queryset().model
+        value = _get_obj(Model, other_model, value)
+    elif type(getattr(Model, field)) in [ManyToManyDescriptor] and value:
+        other_model = getattr(Model, field).rel.model
+        value = [_get_obj(Model, other_model, val) for val in value]
+    return value
+
+
+def _create_object(Model, data):
+    mtm, no_mtm = {}, {}
+    for field, value in data.items():
+        value = _get_real_obj(Model, field, value)
+        if type(getattr(Model, field)) is ManyToManyDescriptor:
+            mtm[field] = value
+        else:
+            no_mtm[field] = value
+    try:
+        o = Model.objects.get(**no_mtm)
+    except Model.DoesNotExist:
+        o = Model(**no_mtm)
+        o.full_clean()
+        o.save()
+        for field, value in mtm.items():
+            attribute = getattr(o, field)
+            if value is not None:
+                attribute.set(value)
+        return False
+    return True
+
+
+def migrate(apps, schema_editor):
+    Parameter = apps.get_model("api_app", "Parameter")
+    PluginConfig = apps.get_model("api_app", "PluginConfig")
+    python_path = plugin.pop("model")
+    Model = apps.get_model(*python_path.split("."))
+    if not Model.objects.filter(name=plugin["name"]).exists():
+        exists = _create_object(Model, plugin)
+        if not exists:
+            for param in params:
+                _create_object(Parameter, param)
+            for value in values:
+                _create_object(PluginConfig, value)
+
+
+def reverse_migrate(apps, schema_editor):
+    python_path = plugin.pop("model")
+    Model = apps.get_model(*python_path.split("."))
+    Model.objects.get(name=plugin["name"]).delete()
+
+
+class Migration(migrations.Migration):
+    atomic = False
+    dependencies = [
+        ("api_app", "0062_alter_parameter_python_module"),
+        ("analyzers_manager", "0077_analyzer_config_abusix"),
+    ]
+
+    operations = [migrations.RunPython(migrate, reverse_migrate)]

api_app/analyzers_manager/models.py

@@ -84,6 +84,8 @@ class MimeTypes(models.TextChoices):
     XPKCS7 = "application/x-pkcs7-signature"
     MIXED = "multipart/mixed"
     X_SHELLSCRIPT = "text/x-shellscript"
+    CRX = "application/x-chrome-extension"
+    JSON = "application/json"
 
     @classmethod
     def _calculate_from_filename(cls, file_name: str) -> Optional["MimeTypes"]:

frontend/src/constants/jobConst.js

@@ -83,6 +83,8 @@ export const FileMimeTypes = Object.freeze({
   XPKCS7: "application/x-pkcs7-signature",
   MIXED: "multipart/mixed",
   X_SHELLSCRIPT: "text/x-shellscript",
+  CRX: "application/x-chrome-extension",
+  JSON: "application/json",
 });
 
 export const ObservableClassifications = Object.freeze({
@@ -179,6 +181,7 @@ export const FileExtensions = Object.freeze({
   PUBLICVM: "publicvm",
   ISO: "iso",
   SH: "sh",
+  CRX: "crx",
 });
 
 export const InvalidTLD = Object.freeze({

requirements/project-requirements.txt

@@ -71,6 +71,7 @@ greynoise==2.1.0
 XLMMacroDeobfuscator[secure]==0.2.3
 thinkst-zippy==0.1.2
 querycontacts==2.0.0
+permhash==0.1.4.2
 
 # this is required because XLMMacroDeobfuscator does not pin the following packages
 pyxlsb2==0.0.8