feat(memegenerator): unlock-pro patch (#1902)

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

src/main/kotlin/app/revanced/patches/memegenerator/detection/license/fingerprint/LicenseValidationFingerprint.kt

@@ -0,0 +1,24 @@
+package app.revanced.patches.memegenerator.detection.license.fingerprint
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcode
+
+object LicenseValidationFingerprint : MethodFingerprint(
+    returnType = "Z",
+    access = AccessFlags.PUBLIC or AccessFlags.STATIC,
+    parameters = listOf("Landroid/content/Context;"),
+    opcodes = listOf(
+        Opcode.INVOKE_STATIC,
+        Opcode.MOVE_RESULT_WIDE,
+        Opcode.INVOKE_STATIC,
+        Opcode.MOVE_RESULT_WIDE,
+        Opcode.CMP_LONG,
+        Opcode.IF_GEZ,
+        Opcode.CONST_4,
+        Opcode.RETURN,
+        Opcode.CONST_4,
+        Opcode.RETURN
+    )
+)

src/main/kotlin/app/revanced/patches/memegenerator/detection/license/patch/LicenseValidationPatch.kt

@@ -0,0 +1,31 @@
+package app.revanced.patches.memegenerator.detection.license.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.replaceInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patches.memegenerator.detection.license.fingerprint.LicenseValidationFingerprint
+
+@Description("Disables Firebase license validation.")
+@Version("0.0.1")
+class LicenseValidationPatch : BytecodePatch(
+    listOf(LicenseValidationFingerprint)
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        LicenseValidationFingerprint.result?.apply {
+            mutableMethod.replaceInstructions(
+                0,
+                """
+                    const/4 p0, 0x1
+                    return  p0
+                """
+            )
+        } ?: throw LicenseValidationFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+}

src/main/kotlin/app/revanced/patches/memegenerator/detection/signature/fingerprint/VerifySignatureFingerprint.kt

@@ -0,0 +1,35 @@
+package app.revanced.patches.memegenerator.detection.signature.fingerprint
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.annotation.FuzzyPatternScanMethod
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcode
+
+@FuzzyPatternScanMethod(2)
+object VerifySignatureFingerprint : MethodFingerprint(
+    returnType = "Z",
+    access = AccessFlags.PUBLIC or AccessFlags.STATIC,
+    parameters = listOf("Landroid/app/Activity;"),
+    opcodes = listOf(
+        Opcode.SGET_OBJECT,
+        Opcode.IF_NEZ,
+        Opcode.INVOKE_STATIC,
+        Opcode.CONST_4,
+        Opcode.CONST_4,
+        Opcode.SGET_OBJECT,
+        Opcode.ARRAY_LENGTH,
+        Opcode.IF_GE,
+        Opcode.AGET_OBJECT,
+        Opcode.INVOKE_VIRTUAL,
+        Opcode.MOVE_RESULT_OBJECT,
+        Opcode.SGET_OBJECT,
+        Opcode.IF_EQZ,
+        Opcode.INVOKE_VIRTUAL,
+        Opcode.MOVE_RESULT,
+        Opcode.IF_EQZ,
+        Opcode.CONST_4,
+        Opcode.RETURN,
+        Opcode.ADD_INT_LIT8
+    ),
+)

src/main/kotlin/app/revanced/patches/memegenerator/detection/signature/patch/SignatureVerificationPatch.kt

@@ -0,0 +1,31 @@
+package app.revanced.patches.memegenerator.detection.signature.patch
+
+import app.revanced.extensions.toErrorResult
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.BytecodeContext
+import app.revanced.patcher.extensions.replaceInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patches.memegenerator.detection.signature.fingerprint.VerifySignatureFingerprint
+
+@Description("Disables detection of incorrect signature.")
+@Version("0.0.1")
+class SignatureVerificationPatch : BytecodePatch(
+    listOf(VerifySignatureFingerprint)
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        VerifySignatureFingerprint.result?.apply {
+            mutableMethod.replaceInstructions(
+                0,
+                """
+                    const/4 p0, 0x1
+                    return  p0
+                """
+            )
+        } ?: throw VerifySignatureFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+}

src/main/kotlin/app/revanced/patches/memegenerator/misc/pro/annotations/UnlockProCompatibility.kt

@@ -0,0 +1,8 @@
+package app.revanced.patches.memegenerator.misc.pro.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("com.zombodroid.MemeGenerator", arrayOf("4.6364"))])
+@Target(AnnotationTarget.CLASS)
+internal annotation class UnlockProCompatibility

src/main/kotlin/app/revanced/patches/memegenerator/misc/pro/fingerprint/IsFreeVersionFingerprint.kt

@@ -0,0 +1,22 @@
+package app.revanced.patches.memegenerator.misc.pro.fingerprint
+
+import app.revanced.patcher.extensions.or
+import app.revanced.patcher.fingerprint.method.impl.MethodFingerprint
+import org.jf.dexlib2.AccessFlags
+import org.jf.dexlib2.Opcode
+
+object IsFreeVersionFingerprint : MethodFingerprint(
+    returnType = "Ljava/lang/Boolean;",
+    access = AccessFlags.PUBLIC or AccessFlags.STATIC,
+    strings = listOf("free"),
+    parameters = listOf("Landroid/content/Context;"),
+    opcodes = listOf(
+        Opcode.SGET,
+        Opcode.INVOKE_VIRTUAL,
+        Opcode.MOVE_RESULT_OBJECT,
+        Opcode.CONST_STRING,
+        Opcode.INVOKE_VIRTUAL,
+        Opcode.MOVE_RESULT,
+        Opcode.IF_EQZ
+    )
+)

src/main/kotlin/app/revanced/patches/memegenerator/misc/pro/patch/UnlockProVersionPatch.kt

@@ -0,0 +1,45 @@
+package app.revanced.patches.memegenerator.misc.pro.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.extensions.replaceInstructions
+import app.revanced.patcher.patch.BytecodePatch
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patches.memegenerator.detection.license.patch.LicenseValidationPatch
+import app.revanced.patches.memegenerator.detection.signature.patch.SignatureVerificationPatch
+import app.revanced.patches.memegenerator.misc.pro.annotations.UnlockProCompatibility
+import app.revanced.patches.memegenerator.misc.pro.fingerprint.IsFreeVersionFingerprint
+
+@Patch
+@Name("unlock-pro")
+@Description("Unlocks pro features.")
+@DependsOn([
+    SignatureVerificationPatch::class,
+    LicenseValidationPatch::class
+])
+@UnlockProCompatibility
+@Version("0.0.1")
+class UnlockProVersionPatch : BytecodePatch(
+    listOf(
+        IsFreeVersionFingerprint
+    )
+) {
+    override fun execute(context: BytecodeContext): PatchResult {
+        IsFreeVersionFingerprint.result?.apply {
+            mutableMethod.replaceInstructions(0,
+                """
+                    sget-object p0, Ljava/lang/Boolean;->FALSE:Ljava/lang/Boolean;
+                    return-object p0
+                """
+            )
+        } ?: throw IsFreeVersionFingerprint.toErrorResult()
+
+        return PatchResultSuccess()
+    }
+}