feat: meo passcode bypass

app/src/main/assets/lang/en_US.json

@@ -53,7 +53,8 @@
         "block_ads": "Block Ads",
         "streak_expiration_info": "Show Streak Expiration Info",
         "new_map_ui": "New Map UI",
-        "use_download_manager": "Use Android Download Manager"
+        "use_download_manager": "Use Android Download Manager",
+        "meo_passcode_bypass": "My Eyes Only Passcode Bypass"
     },
 
     "option": {

app/src/main/kotlin/me/rhunk/snapenhance/config/ConfigProperty.kt

@@ -209,6 +209,12 @@ enum class ConfigProperty(
         "description.use_download_manager",
         ConfigCategory.EXPERIMENTAL,
         ConfigStateValue(false)
+    ),
+    MEO_PASSCODE_BYPASS(
+    "property.meo_passcode_bypass",
+    "description.meo_passcode_bypass",
+        ConfigCategory.EXPERIMENTAL,
+        ConfigStateValue(false)
     );
 
     companion object {

app/src/main/kotlin/me/rhunk/snapenhance/features/impl/MeoPasscodeBypass.kt

@@ -0,0 +1,21 @@
+package me.rhunk.snapenhance.features.impl
+
+import me.rhunk.snapenhance.config.ConfigProperty
+import me.rhunk.snapenhance.features.Feature
+import me.rhunk.snapenhance.features.FeatureLoadParams
+import me.rhunk.snapenhance.hook.HookStage
+import me.rhunk.snapenhance.hook.Hooker
+
+class MeoPasscodeBypass : Feature("Meo Passcode Bypass", loadParams = FeatureLoadParams.ACTIVITY_CREATE_ASYNC) {
+    override fun asyncOnActivityCreate() {
+        Hooker.hook(
+            context.mappings.getMappedClass("BCryptClass"),
+            context.mappings.getMappedValue("BCryptClassHashMethod"),
+            HookStage.BEFORE,
+            { context.config.bool(ConfigProperty.MEO_PASSCODE_BYPASS) },
+        ) { param ->
+            //set the hash to the result of the method
+            param.setResult(param.arg(1))
+        }
+    }
+}

app/src/main/kotlin/me/rhunk/snapenhance/manager/impl/FeatureManager.kt

@@ -5,14 +5,15 @@ import me.rhunk.snapenhance.ModContext
 import me.rhunk.snapenhance.features.Feature
 import me.rhunk.snapenhance.features.FeatureLoadParams
 import me.rhunk.snapenhance.features.impl.ConfigEnumKeys
+import me.rhunk.snapenhance.features.impl.MeoPasscodeBypass
 import me.rhunk.snapenhance.features.impl.Messaging
 import me.rhunk.snapenhance.features.impl.downloader.AntiAutoDownload
 import me.rhunk.snapenhance.features.impl.downloader.MediaDownloader
 import me.rhunk.snapenhance.features.impl.extras.AntiAutoSave
 import me.rhunk.snapenhance.features.impl.extras.AutoSave
-import me.rhunk.snapenhance.features.impl.extras.MediaQualityLevelOverride
 import me.rhunk.snapenhance.features.impl.extras.DisableVideoLengthRestriction
 import me.rhunk.snapenhance.features.impl.extras.ExternalMediaAsSnap
+import me.rhunk.snapenhance.features.impl.extras.MediaQualityLevelOverride
 import me.rhunk.snapenhance.features.impl.extras.Notifications
 import me.rhunk.snapenhance.features.impl.extras.SnapchatPlus
 import me.rhunk.snapenhance.features.impl.extras.UnlimitedSnapViewTime
@@ -70,6 +71,7 @@ class FeatureManager(private val context: ModContext) : Manager {
         register(UnlimitedSnapViewTime::class)
         register(DisableVideoLengthRestriction::class)
         register(MediaQualityLevelOverride::class)
+        register(MeoPasscodeBypass::class)
 
         initializeFeatures()
     }

app/src/main/kotlin/me/rhunk/snapenhance/manager/impl/MappingManager.kt

@@ -12,6 +12,7 @@ import me.rhunk.snapenhance.ModContext
 import me.rhunk.snapenhance.bridge.common.impl.file.BridgeFileType
 import me.rhunk.snapenhance.manager.Manager
 import me.rhunk.snapenhance.mapping.Mapper
+import me.rhunk.snapenhance.mapping.impl.BCryptClassMapper
 import me.rhunk.snapenhance.mapping.impl.CallbackMapper
 import me.rhunk.snapenhance.mapping.impl.EnumMapper
 import me.rhunk.snapenhance.mapping.impl.GridMediaItemMapper
@@ -29,6 +30,7 @@ class MappingManager(private val context: ModContext) : Manager {
         add(OperaPageViewControllerMapper())
         add(PlusSubscriptionMapper())
         add(GridMediaItemMapper())
+        add(BCryptClassMapper())
     }
 
     private val mappings = ConcurrentHashMap<String, Any>()

app/src/main/kotlin/me/rhunk/snapenhance/mapping/impl/BCryptClassMapper.kt

@@ -0,0 +1,26 @@
+package me.rhunk.snapenhance.mapping.impl
+
+import me.rhunk.snapenhance.mapping.Mapper
+import java.lang.reflect.Modifier
+
+class BCryptClassMapper : Mapper() {
+    override fun useClasses(
+        classLoader: ClassLoader,
+        classes: List<Class<*>>,
+        mappings: MutableMap<String, Any>
+    ) {
+        for (clazz in classes) {
+            if (!Modifier.isFinal(clazz.modifiers)) continue
+            clazz.fields.firstOrNull { it.type == IntArray::class.java && Modifier.isStatic(it.modifiers)}?.let { field ->
+                val fieldData = field.get(null)
+                if (fieldData !is IntArray) return@let
+                if (fieldData.size != 18 || fieldData[0] != 608135816) return@let
+                mappings["BCryptClass"] = clazz.name
+                mappings["BCryptClassHashMethod"] = clazz.methods.first {
+                    it.parameterTypes.size == 2 && it.returnType == String::class.java && it.parameterTypes[0] == String::class.java && it.parameterTypes[1] == String::class.java
+                }.name
+                return
+            }
+        }
+    }
+}