feat(youtube): spoof-signature-verification patch (#1745)

Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>

src/main/kotlin/app/revanced/patches/youtube/misc/fix/playback/annotation/ProtobufSpoofCompatibility.kt

@@ -0,0 +1,21 @@
+package app.revanced.patches.youtube.misc.fix.playback.annotation
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility(
+    [Package(
+        "com.google.android.youtube", arrayOf(
+            "17.49.37", 
+            "18.03.36",
+            "18.03.42",
+            "18.04.35",
+            "18.04.41",
+            "18.05.32",
+            "18.05.35",
+            "18.05.40"
+        )
+    )]
+)
+@Target(AnnotationTarget.CLASS)
+internal annotation class ProtobufSpoofCompatibility

src/main/kotlin/app/revanced/patches/youtube/misc/fix/playback/fingerprints/ProtobufParameterBuilderFingerprint.kt

@@ -0,0 +1,31 @@
+package app.revanced.patches.youtube.misc.fix.playback.fingerprints
+
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.Opcode
+
+object ProtobufParameterBuilderFingerprint : MethodFingerprint(
+    opcodes = listOf(
+        Opcode.MOVE_RESULT,
+        Opcode.CONST_16,
+        Opcode.MOVE_FROM16,
+        Opcode.MOVE_OBJECT_FROM16,
+        Opcode.MOVE_OBJECT_FROM16,
+        Opcode.MOVE_OBJECT,
+        Opcode.MOVE_FROM16,
+        Opcode.MOVE_OBJECT_FROM16,
+        Opcode.MOVE_FROM16,
+        Opcode.MOVE_OBJECT_FROM16,
+        Opcode.MOVE_OBJECT_FROM16,
+        Opcode.MOVE_OBJECT_FROM16,
+        Opcode.MOVE_FROM16,
+        Opcode.MOVE_FROM16,
+        Opcode.MOVE_FROM16,
+        Opcode.INVOKE_VIRTUAL_RANGE, // target reference
+//        Opcode.MOVE_RESULT_OBJECT,
+//        Opcode.IPUT_OBJECT
+    ),
+    strings = listOf(
+        "Prefetch request are disabled.",
+        "Unexpected empty videoId.",
+    )
+)

src/main/kotlin/app/revanced/patches/youtube/misc/fix/playback/patch/SpoofSignatureVerificationPatch.kt

@@ -0,0 +1,53 @@
+package app.revanced.patches.youtube.misc.fix.playback.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.data.toMethodWalker
+import app.revanced.patcher.extensions.addInstructions
+import app.revanced.patcher.extensions.instruction
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.util.proxy.mutableTypes.MutableMethod
+import app.revanced.patcher.util.smali.ExternalLabel
+import app.revanced.patches.youtube.misc.fix.playback.annotation.ProtobufSpoofCompatibility
+import app.revanced.patches.youtube.misc.fix.playback.fingerprints.ProtobufParameterBuilderFingerprint
+
+@Patch
+@Name("spoof-signature-verification")
+@Description("Spoofs the client to prevent playback issues.")
+@ProtobufSpoofCompatibility
+@Version("0.0.1")
+class SpoofSignatureVerificationPatch : BytecodePatch(
+    listOf(ProtobufParameterBuilderFingerprint)
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        ProtobufParameterBuilderFingerprint.result?.let {
+            val setParamMethod = context
+                .toMethodWalker(it.method)
+                .nextMethod(it.scanResult.patternScanResult!!.endIndex, true).getMethod() as MutableMethod
+
+            setParamMethod.apply {
+                val protobufParameterRegister = 3
+                val parameterValue = "8AEByAMTuAQP" /* Protobuf Parameter of shorts */
+
+                addInstructions(
+                    0,
+                    """
+                        invoke-virtual { p$protobufParameterRegister }, Ljava/lang/String;->length()I
+                        move-result v0
+                        const/16 v1, 0x10
+                        if-ge v0, v1, :not_spoof # bypass on feed 
+                        const-string p$protobufParameterRegister, "$parameterValue"
+                    """,
+                    listOf(ExternalLabel("not_spoof", instruction(0))))
+            }
+        } ?: return ProtobufParameterBuilderFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+}

src/main/kotlin/app/revanced/patches/youtube/misc/microg/patch/bytecode/MicroGBytecodePatch.kt

@@ -12,6 +12,7 @@ import app.revanced.patcher.patch.annotations.Patch
 import app.revanced.patches.shared.fingerprints.WatchWhileActivityFingerprint
 import app.revanced.patches.youtube.layout.buttons.cast.patch.HideCastButtonPatch
 import app.revanced.patches.youtube.misc.fix.spoof.patch.ClientSpoofPatch
+import app.revanced.patches.youtube.misc.fix.playback.patch.SpoofSignatureVerificationPatch
 import app.revanced.patches.youtube.misc.microg.annotations.MicroGPatchCompatibility
 import app.revanced.patches.youtube.misc.microg.fingerprints.*
 import app.revanced.patches.youtube.misc.microg.patch.resource.MicroGResourcePatch
@@ -24,7 +25,8 @@ import app.revanced.util.microg.MicroGBytecodeHelper
     [
         MicroGResourcePatch::class,
         HideCastButtonPatch::class,
-        ClientSpoofPatch::class
+        ClientSpoofPatch::class,
+        SpoofSignatureVerificationPatch::class
     ]
 )
 @Name("microg-support")