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fix(Messenger - Remove Meta AI): Improve patch logic (#5153)

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Dawid Krajcarz
2025-06-19 08:06:46 +02:00
committed by GitHub
parent d31624cae8
commit a8d2a1e028
5 changed files with 52 additions and 12 deletions
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12
patches/src/main/kotlin/app/revanced/patches/messenger/metaai/Fingerprints.kt
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@@ -11,3 +11,15 @@ internal val getMobileConfigBoolFingerprint = fingerprint {
classDef.interfaces.contains("Lcom/facebook/mobileconfig/factory/MobileConfigUnsafeContext;")
}
}
internal val metaAIKillSwitchCheckFingerprint = fingerprint {
strings("SearchAiagentImplementationsKillSwitch")
opcodes(Opcode.CONST_WIDE)
}
internal val extensionMethodFingerprint = fingerprint {
strings("REPLACED_BY_PATCH")
custom { method, classDef ->
method.name == EXTENSION_METHOD_NAME && classDef.type == EXTENSION_CLASS_DESCRIPTOR
}
}

22
patches/src/main/kotlin/app/revanced/patches/messenger/metaai/RemoveMetaAIPatch.kt
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@@ -2,11 +2,14 @@ package app.revanced.patches.messenger.metaai
import app.revanced.patcher.extensions.InstructionExtensions.addInstructions
import app.revanced.patcher.extensions.InstructionExtensions.getInstruction
import app.revanced.patcher.extensions.InstructionExtensions.replaceInstruction
import app.revanced.patcher.patch.bytecodePatch
import app.revanced.patches.messenger.misc.extension.sharedExtensionPatch
import com.android.tools.smali.dexlib2.iface.instruction.OneRegisterInstruction
import com.android.tools.smali.dexlib2.iface.instruction.WideLiteralInstruction
private const val EXTENSION_CLASS_DESCRIPTOR = "Lapp/revanced/extension/messenger/metaai/RemoveMetaAIPatch;"
internal const val EXTENSION_CLASS_DESCRIPTOR = "Lapp/revanced/extension/messenger/metaai/RemoveMetaAIPatch;"
internal const val EXTENSION_METHOD_NAME = "overrideBooleanFlag"
@Suppress("unused")
val removeMetaAIPatch = bytecodePatch(
@@ -25,10 +28,25 @@ val removeMetaAIPatch = bytecodePatch(
addInstructions(
returnIndex,
"""
invoke-static { p1, p2, v$returnRegister }, $EXTENSION_CLASS_DESCRIPTOR->overrideBooleanFlag(JZ)Z
invoke-static { p1, p2, v$returnRegister }, $EXTENSION_CLASS_DESCRIPTOR->$EXTENSION_METHOD_NAME(JZ)Z
move-result v$returnRegister
"""
)
}
// Extract the common starting digits of Meta AI flag IDs from a flag found in code.
val relevantDigits = with(metaAIKillSwitchCheckFingerprint) {
method.getInstruction<WideLiteralInstruction>(patternMatch!!.startIndex).wideLiteral
}.toString().substring(0, 7)
// Replace placeholder in the extension method.
with(extensionMethodFingerprint) {
method.replaceInstruction(
stringMatches!!.first().index,
"""
const-string v1, "$relevantDigits"
"""
)
}
}
}

2
patches/src/main/kotlin/app/revanced/patches/messenger/misc/extension/ExtensionPatch.kt
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@@ -2,4 +2,4 @@ package app.revanced.patches.messenger.misc.extension
import app.revanced.patches.shared.misc.extension.sharedExtensionPatch
val sharedExtensionPatch = sharedExtensionPatch("messenger", mainActivityOnCreateHook)
val sharedExtensionPatch = sharedExtensionPatch("messenger", messengerApplicationOnCreateHook)

6
patches/src/main/kotlin/app/revanced/patches/messenger/misc/extension/Hooks.kt
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@@ -2,6 +2,8 @@ package app.revanced.patches.messenger.misc.extension
import app.revanced.patches.shared.misc.extension.extensionHook
internal val mainActivityOnCreateHook = extensionHook {
strings("MainActivity_onCreate_begin")
internal val messengerApplicationOnCreateHook = extensionHook {
custom { method, classDef ->
method.name == "onCreate" && classDef.endsWith("/MessengerApplication;")
}
}