Category Archives: Platforms and frameworks

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15
09
25
 1 Comment

Using Frida to hook Win API calls

Posted by | Python, Win32, Windows | 
python -m pip install frida-tools

Collecting frida-tools
  Downloading frida-tools-14.4.5.tar.gz (4.7 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 4.7/4.7 MB 2.8 MB/s  0:00:01
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: colorama<1.0.0,>=0.2.7 in c:\dev\tools\python313\lib\site-packages (from frida-tools) (0.4.6)
Collecting frida<18.0.0,>=17.2.8 (from frida-tools)
  Downloading frida-17.2.17-cp37-abi3-win_amd64.whl.metadata (2.3 kB)
Collecting prompt-toolkit<4.0.0,>=2.0.0 (from frida-tools)
  Downloading prompt_toolkit-3.0.52-py3-none-any.whl.metadata (6.4 kB)
Collecting pygments<3.0.0,>=2.0.2 (from frida-tools)
  Downloading pygments-2.19.2-py3-none-any.whl.metadata (2.5 kB)
Collecting websockets<14.0.0,>=13.0.0 (from frida-tools)
  Downloading websockets-13.1-cp313-cp313-win_amd64.whl.metadata (7.0 kB)
Collecting wcwidth (from prompt-toolkit<4.0.0,>=2.0.0->frida-tools)
  Downloading wcwidth-0.2.13-py2.py3-none-any.whl.metadata (14 kB)
Downloading frida-17.2.17-cp37-abi3-win_amd64.whl (41.8 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 41.8/41.8 MB 10.6 MB/s  0:00:04
Downloading prompt_toolkit-3.0.52-py3-none-any.whl (391 kB)
Downloading pygments-2.19.2-py3-none-any.whl (1.2 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.2/1.2 MB 10.4 MB/s  0:00:00
Downloading websockets-13.1-cp313-cp313-win_amd64.whl (159 kB)
Downloading wcwidth-0.2.13-py2.py3-none-any.whl (34 kB)
Building wheels for collected packages: frida-tools
  Building wheel for frida-tools (pyproject.toml) ... done
  Created wheel for frida-tools: filename=frida_tools-14.4.5-py3-none-any.whl size=4699595 sha256=115f2de0f912d70ee9eed25c26b0460f4fe24213359dd46a0ffec3e96e24c911
  Stored in directory: c:\users\dmitr\appdata\local\pip\cache\wheels\a6\b2\fb\eff238e22a7ceffee8c7a366ce7ff4011af13c77a103f870d4
Successfully built frida-tools
Installing collected packages: wcwidth, websockets, pygments, prompt-toolkit, frida, frida-tools
   ━━━━━━━━━━━━━╺━━━━━━━━━━━━━━━━━━━━━━━━━━ 2/6 [pygments]  WARNING: The script pygmentize.exe is installed in 'C:\dev\tools\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╺━━━━━━ 5/6 [frida-tools]  WARNING: The scripts frida-apk.exe, frida-compile.exe, frida-create.exe, frida-discover.exe, frida-itrace.exe, frida-join.exe, frida-kill.exe, frida-ls-devices.exe, frida-ls.exe, frida-pm.exe, frida-ps.exe, frida-pull.exe, frida-push.exe, frida-rm.exe, frida-trace.exe and frida.exe are installed in 'C:\dev\tools\Python313\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed frida-17.2.17 frida-tools-14.4.5 prompt-toolkit-3.0.52 pygments-2.19.2 wcwidth-0.2.13 websockets-13.1
(more…)
25
06
25
 Leave a comment

Building QT 6.9.1 on MacOS Sequoia

Posted by | Mac OS X, QT |

Determine XCode command line tools version:

pkgutil --pkg-info=com.apple.pkg.CLTools_Executables

version: 16.4.0.0.1.1747106510
volume: /
location: /
install-time: 1750710554

clang --version

Apple clang version 17.0.0 (clang-1700.0.13.5)
Target: x86_64-apple-darwin24.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
(more…)
14
03
25
 3 Comments

An example of connecting a signal by name in QT

Posted by | QT | 
class TableColumn : public QObject
{
    Q_OBJECT

public slots:

    void onValueChanged()
    {
        emit onChanged();
    }

signals:

    void onChanged();
};
(more…)
02
12
24
 6 Comments

How I fixed wrong colors in my QML app on Android

Posted by | QML, QT |

I removed android:theme from AndroidManifest.xml:

<activity android:name="net.geographx.MainActivity"
    android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density"
    android:label="@string/app_name"
    android:theme="@style/AppTheme"
    android:launchMode="singleTask"
    android:screenOrientation="portrait"
    android:exported="true">
    <!-- Splash screen -->
    <meta-data android:name="android.app.splash_screen_drawable" android:resource="@drawable/splash"/>
    <!-- Splash screen -->
(more…)
23
10
24
 Leave a comment

Make QML menu width fit the content

Posted by | QML, QT |

Found an implementation here and added two pixels:

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts

Menu {
    width: {
        var result = 0;
        var padding = 0;
        for (var i = 0; i < count; ++i) {
            var item = itemAt(i);
            result = Math.max(item.contentItem.implicitWidth, result);
            padding = Math.max(item.padding, padding);
        }
        // It looks like two pixels are missing to remove the ellipsis.
        // My first idea was that it is leftInset + rightInset, but it does not work.
        var missing = 2;
        return result + padding * 2 + missing;
    }
}
(more…)
25
09
24
 5 Comments

Examples of C++/Objective-C interop

Posted by | Objective C, QT |

From QT’s Purchasing:

//SKProductsRequestDelegate
-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
{
    NSArray<SKProduct *> *products = response.products;
    SKProduct *product = [products count] == 1 ? [[products firstObject] retain] : nil;

    if (product == nil) {
        //Invalid product ID
        NSString *invalidId = [response.invalidProductIdentifiers firstObject];
        QMetaObject::invokeMethod(backend, "registerQueryFailure", Qt::AutoConnection, Q_ARG(QString, QString::fromNSString(invalidId)));
    } else {
        //Valid product query
        //Create a IosInAppPurchaseProduct
        IosInAppPurchaseProduct *validProduct = new IosInAppPurchaseProduct(product, backend->productTypeForProductId(QString::fromNSString([product productIdentifier])));
        if (validProduct->thread() != backend->thread()) {
            validProduct->moveToThread(backend->thread());
            QMetaObject::invokeMethod(backend, "setParentToBackend", Qt::AutoConnection, Q_ARG(QObject*, validProduct));
        }
        QMetaObject::invokeMethod(backend, "registerProduct", Qt::AutoConnection, Q_ARG(IosInAppPurchaseProduct*, validProduct));
    }

    [request release];
}
(more…)
09
08
24
 1 Comment

Using Swift in a QT6 app

Posted by | QT, Swift |

I simply opened arboreus_examples/qt6/CMake/UsingSwift/UsingSwift_v3/CMakeLists.txt in QT Creator and was able to build it and run.

In its main.cpp it creates a Swift wrapper and calls method:

ASwift* oSwift = new ASwift(&oEngine);
oSwift->mInit();
_A_DEBUG << oSwift->mString();
(more…)
02
07
24
 4 Comments

“Null object reference” exceptions on Android 14 in a QT app

Posted by | Android, QT |

When I switched to QT 6.7.2 and set QT_ANDROID_TARGET_SDK_VERSION "34" (that is Android 14) my QT app started to crash with the following stack traces:

On google Pixel 5 64-bit only 1080x2340 Android 14 (SDK 34) arm64-v8a:

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.Object.getClass()' on a null object reference
  at android.os.Parcel.createExceptionOrNull (Parcel.java:3189)
  at android.os.Parcel.createException (Parcel.java:3167)
  at android.os.Parcel.readException (Parcel.java:3150)
  at android.database.DatabaseUtils.readExceptionFromParcel (DatabaseUtils.java:202)
  at android.database.DatabaseUtils.readExceptionFromParcel (DatabaseUtils.java:154)
  at android.content.ContentProviderProxy.call (ContentProviderNative.java:764)
  at android.content.ContentResolver.call (ContentResolver.java:2466)
  at android.content.ContentResolver.call (ContentResolver.java:2446)
  at ekfr.a (:com.google.android.gms@242013038@24.20.13 (190400-633713831):29)
  at com.google.android.gms.wallet.intentoperation.setupwizard.PaymentsSetupWizardAccountChangeIntentOperation.onHandleIntent (:com.google.android.gms@242013038@24.20.13 (190400-633713831):252)
  at com.google.android.chimera.IntentOperation.onHandleIntent (:com.google.android.gms@242013038@24.20.13 (190400-633713831):2)
  at ajdw.onHandleIntent (:com.google.android.gms@242013038@24.20.13 (190400-633713831):8)
  at pbh.run (:com.google.android.gms@242013038@24.20.13 (190400-633713831):70)
  at pbg.run (:com.google.android.gms@242013038@24.20.13 (190400-633713831):152)
  at elbx.run (:com.google.android.gms@242013038@24.20.13 (190400-633713831):21)
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1145)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:644)
  at java.lang.Thread.run (Thread.java:1012)
(more…)
30
06
24
 2 Comments

QT stopped compiling with QT_NO_EXCEPTIONS

Posted by | QT |

QT 6.7.2 failed to build with QT_NO_EXCEPTIONS for Android with the following errors:

C:/dev/repos/qt-everywhere-src-6.7.2/qtbase/src/corelib/io/qprocess_unix.cpp:889:29: error: use of undeclared identifier 'e'
        failChildProcess(d, e.what(), FakeErrnoForThrow);
                            ^
C:/dev/repos/qt-everywhere-src-6.7.2/qtbase/src/corelib/io/qprocess_unix.cpp:890:7: error: expected expression
    } QT_CATCH (...) {
      ^
C:/dev/repos/qt-everywhere-src-6.7.2/qtbase/src/corelib/global/qexceptionhandling.h:28:23: note: expanded from macro 'QT_CATCH'
#  define QT_CATCH(A) else
                      ^
2 errors generated.
[673/5992] Building CXX object qtbase/src/corelib/CMakeFiles/Core.dir/itemmodels/qabstractitemmodel.cpp.o
ninja: build stopped: subcommand failed.
(more…)
03
05
24
 11 Comments

Building Lines Game for MacOS and iOS

Posted by | iOS, Mac OS X, QT |

To build my app for iOS I tried to run CMake from the command line without QT Creator:

cmake -S /Users/admin/dev/repos/examples/src/LinesGame/LinesGameQt -B . -DCMAKE_GENERATOR:STRING=Xcode \
  -DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=./.qtc/package-manager/auto-setup.cmake -DQT_QMAKE_EXECUTABLE:FILEPATH=/Users/admin/dev/libs/QT6/release/iOS/bin/qmake6 \
  -DCMAKE_PREFIX_PATH:PATH=/Users/admin/dev/libs/QT6/release/iOS \
  -DCMAKE_C_COMPILER:FILEPATH=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang \
  -DCMAKE_CXX_COMPILER:FILEPATH=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ \
  -DCMAKE_TOOLCHAIN_FILE:FILEPATH=/Users/admin/dev/libs/QT6/release/iOS/lib/cmake/Qt6/qt.toolchain.cmake \
  -DCMAKE_OSX_ARCHITECTURES:STRING=arm64 -DCMAKE_OSX_SYSROOT:STRING=iphoneos -DCMAKE_CXX_FLAGS_INIT:STRING= \
  -DCMAKE_XCODE_ATTRIBUTE_DEVELOPMENT_TEAM:STRING=XXXXXXX
(more…)
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