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40 changes: 40 additions & 0 deletions app/src/main/java/toolkit/coderstory/CorePatchForT.java
Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,12 @@
import android.content.pm.Signature;

import java.io.PrintWriter;
import java.io.RandomAccessFile;
import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;

import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XC_MethodReplacement;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
Expand Down Expand Up @@ -90,6 +93,43 @@ protected void afterHookedMethod(MethodHookParam param) {
if (utils != null) {
deoptimizeMethod(utils, "canJoinSharedUserId");
}

if (prefs.getBoolean("digestCreak", true)) {
XposedBridge.log("I/" + MainHook.TAG + " Digest Creak enabled");
var apkSigningBlockClass = findClass("android.util.apk.ApkSigningBlockUtils", loadPackageParam.classLoader);
var signatureInfoClass = findClass("android.util.apk.SignatureInfo", loadPackageParam.classLoader);
findAndHookMethod(
apkSigningBlockClass,
"parseVerityDigestAndVerifySourceLength",
byte[].class,
long.class,
signatureInfoClass,
new XC_MethodReplacement() {
@Override
protected Object replaceHookedMethod(MethodHookParam param) throws Throwable {
XposedBridge.log("I/" + MainHook.TAG + " Digest Creak: parseVerityDigestAndVerifySourceLength called");
byte[] data = (byte[]) param.args[0];
int kRootHashSize = 32;
return Arrays.copyOfRange(data, 0, kRootHashSize);
}
}
);

findAndHookMethod(
apkSigningBlockClass,
"verifyIntegrityForVerityBasedAlgorithm",
byte[].class,
RandomAccessFile.class,
signatureInfoClass,
new XC_MethodReplacement() {
@Override
protected Object replaceHookedMethod(MethodHookParam param) throws Throwable {
XposedBridge.log("I/" + MainHook.TAG + " Digest Creak: verifyIntegrityForVerityBasedAlgorithm called");
return null;
}
}
);
}
}

Class<?> getParsedPackage(ClassLoader classLoader) {
Expand Down