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iOS Hooking With Objection

For this section the tool Objection is going to be used. Start by getting an objection's session executing something like:
objection -d --gadget "iGoat-Swift" explore
objection -d --gadget "OWASP.iGoat-Swift" explore
You can execute also frida-ps -Uia to check the running processes of the phone.

Basic Enumeration of the app

Local App Paths

  • env: Find the paths where the application is stored inside the device
    env
    ​
    Name Path
    ----------------- -----------------------------------------------------------------------------------------------
    BundlePath /private/var/containers/Bundle/Application/179A6E8B-E7A8-476E-BBE3-B9300F546068/iGoat-Swift.app
    CachesDirectory /var/mobile/Containers/Data/Application/A079DF84-726C-4AEA-A194-805B97B3684A/Library/Caches
    DocumentDirectory /var/mobile/Containers/Data/Application/A079DF84-726C-4AEA-A194-805B97B3684A/Documents
    LibraryDirectory /var/mobile/Containers/Data/Application/A079DF84-726C-4AEA-A194-805B97B3684A/Library

List Bundles, frameworks and libraries

  • ios bundles list_bundles: List bundles of the application
    ios bundles list_bundles
    Executable Bundle Version Path
    ------------ -------------------- --------- -------------------------------------------
    iGoat-Swift OWASP.iGoat-Swift 1.0 ...8-476E-BBE3-B9300F546068/iGoat-Swift.app
    AGXMetalA9 com.apple.AGXMetalA9 172.18.4 ...tem/Library/Extensions/AGXMetalA9.bundle
  • ios bundles list_frameworks: List external frameworks used by the application
    ios bundles list_frameworks
    Executable Bundle Version Path
    ------------------------------ -------------------------------------------- ---------- -------------------------------------------
    ReactCommon org.cocoapods.ReactCommon 0.61.5 ...tle.app/Frameworks/ReactCommon.framework
    ...vateFrameworks/CoreDuetContext.framework
    FBReactNativeSpec org.cocoapods.FBReactNativeSpec 0.61.5 ...p/Frameworks/FBReactNativeSpec.framework
    ...ystem/Library/Frameworks/IOKit.framework
    RCTAnimation org.cocoapods.RCTAnimation 0.61.5 ...le.app/Frameworks/RCTAnimation.framework
    jsinspector org.cocoapods.jsinspector 0.61.5 ...tle.app/Frameworks/jsinspector.framework
    DoubleConversion org.cocoapods.DoubleConversion 1.1.6 ...pp/Frameworks/DoubleConversion.framework
    react_native_config org.cocoapods.react-native-config 0.12.0 ...Frameworks/react_native_config.framework
    react_native_netinfo org.cocoapods.react-native-netinfo 4.4.0 ...rameworks/react_native_netinfo.framework
    PureLayout org.cocoapods.PureLayout 3.1.5 ...ttle.app/Frameworks/PureLayout.framework
    GoogleUtilities org.cocoapods.GoogleUtilities 6.6.0 ...app/Frameworks/GoogleUtilities.framework
    RCTNetwork org.cocoapods.RCTNetwork 0.61.5 ...ttle.app/Frameworks/RCTNetwork.framework
    RCTActionSheet org.cocoapods.RCTActionSheet 0.61.5 ....app/Frameworks/RCTActionSheet.framework
    react_native_image_editor org.cocoapods.react-native-image-editor 2.1.0 ...orks/react_native_image_editor.framework
    CoreModules org.cocoapods.CoreModules 0.61.5 ...tle.app/Frameworks/CoreModules.framework
    RCTVibration org.cocoapods.RCTVibration 0.61.5 ...le.app/Frameworks/RCTVibration.framework
    RNGestureHandler org.cocoapods.RNGestureHandler 1.6.1 ...pp/Frameworks/RNGestureHandler.framework
    RNCClipboard org.cocoapods.RNCClipboard 1.5.1 ...le.app/Frameworks/RNCClipboard.framework
    react_native_image_picker org.cocoapods.react-native-image-picker 2.3.4 ...orks/react_native_image_picker.framework
    [..]
  • memory list modules: List loaded modules in memory
    memory list modules
    Name Base Size Path
    ----------------------------------- ----------- ------------------- ------------------------------------------------------------------------------
    iGoat-Swift 0x104ffc000 2326528 (2.2 MiB) /private/var/containers/Bundle/Application/179A6E8B-E7A8-476E-BBE3-B9300F54...
    SubstrateBootstrap.dylib 0x105354000 16384 (16.0 KiB) /usr/lib/substrate/SubstrateBootstrap.dylib
    SystemConfiguration 0x1aa842000 495616 (484.0 KiB) /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguratio...
    libc++.1.dylib 0x1bdcfd000 368640 (360.0 KiB) /usr/lib/libc++.1.dylib
    libz.1.dylib 0x1efd3c000 73728 (72.0 KiB) /usr/lib/libz.1.dylib
    libsqlite3.dylib 0x1c267f000 1585152 (1.5 MiB) /usr/lib/libsqlite3.dylib
    Foundation 0x1ab550000 2732032 (2.6 MiB) /System/Library/Frameworks/Foundation.framework/Foundation
    libobjc.A.dylib 0x1bdc64000 233472 (228.0 KiB) /usr/lib/libobjc.A.dylib
    [...]
  • memory list exports <module_name>: Exports of a loaded module
    memory list exports iGoat-Swift
    Type Name Address
    -------- -------------------------------------------------------------------------------------------------------------------------------------- -----------
    variable _mh_execute_header 0x104ffc000
    function _mdictof 0x10516cb88
    function _ZN9couchbase6differ10BaseDifferD2Ev 0x10516486c
    function _ZN9couchbase6differ10BaseDifferD1Ev 0x1051648f4
    function _ZN9couchbase6differ10BaseDifferD0Ev 0x1051648f8
    function _ZN9couchbase6differ10BaseDiffer5setupEmm 0x10516490c
    function _ZN9couchbase6differ10BaseDiffer11allocStripeEmm 0x105164a20
    function _ZN9couchbase6differ10BaseDiffer7computeEmmj 0x105164ad8
    function _ZN9couchbase6differ10BaseDiffer7changesEv 0x105164de4
    function _ZN9couchbase6differ10BaseDiffer9addChangeENS0_6ChangeE 0x105164fa8
    function _ZN9couchbase6differlsERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEERKNS0_6ChangeE 0x1051651d8
    function _ZN9couchbase6differlsERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEERKNS1_6vectorINS0_6ChangeENS1_9allocatorIS8_EEEE 0x105165280
    variable _ZTSN9couchbase6differ10BaseDifferE 0x1051d94f0
    variable _ZTVN9couchbase6differ10BaseDifferE 0x10523c0a0
    variable _ZTIN9couchbase6differ10BaseDifferE 0x10523c0f8
    [..]

List classes of an APP

  • ios hooking list classes: List classes of the app
    ios hooking list classes
    ​
    AAAbsintheContext
    AAAbsintheSigner
    AAAbsintheSignerContextCache
    AAAcceptedTermsController
    AAAccount
    AAAccountManagementUIResponse
    AAAccountManager
    AAAddEmailUIRequest
    AAAppleIDSettingsRequest
    AAAppleTVRequest
    AAAttestationSigner
    [...]
  • ios hooking search classes <search_term>: Search a class that contains a string. You can search some uniq term that is related to the main app package name to find the main classes of the app like in the example:
    ios hooking search classes iGoat
    iGoat_Swift.CoreDataHelper
    iGoat_Swift.RCreditInfo
    iGoat_Swift.SideContainmentSegue
    iGoat_Swift.CenterContainmentSegue
    iGoat_Swift.KeyStorageServerSideVC
    iGoat_Swift.HintVC
    iGoat_Swift.BinaryCookiesExerciseVC
    iGoat_Swift.ExerciseDemoVC
    iGoat_Swift.PlistStorageExerciseViewController
    iGoat_Swift.CouchBaseExerciseVC
    iGoat_Swift.MemoryManagementVC
    [...]

List class methods

  • ios hooking list class_methods: List methods of a specific class
    ios hooking list class_methods iGoat_Swift.RCreditInfo
    - cvv
    - setCvv:
    - setName:
    - .cxx_destruct
    - name
    - cardNumber
    - init
    - initWithValue:
    - setCardNumber:
  • ios hooking search methods <search_term>: Search a method that contains a string
    ios hooking search methods cvv
    [AMSFinanceVerifyPurchaseResponse + _dialogRequestForCVVFromPayload:verifyType:]
    [AMSFinanceVerifyPurchaseResponse - _handleCVVDialogResult:shouldReattempt:]
    [AMSFinanceVerifyPurchaseResponse - _runCVVRequestForCode:error:]
    [iGoat_Swift.RCreditInfo - cvv]
    [iGoat_Swift.RCreditInfo - setCvv:]
    [iGoat_Swift.RealmExerciseVC - creditCVVTextField]
    [iGoat_Swift.RealmExerciseVC - setCreditCVVTextField:]
    [iGoat_Swift.DeviceLogsExerciseVC - cvvTextField]
    [iGoat_Swift.DeviceLogsExerciseVC - setCvvTextField:]
    [iGoat_Swift.CloudMisconfigurationExerciseVC - cvvTxtField]
    [iGoat_Swift.CloudMisconfigurationExerciseVC - setCvvTxtField:]

Basic Hooking

Now that you have enumerated the classes and modules used by the application you may have found some interesting class and method names.

Hook all methods of a class

  • ios hooking watch class <class_name>: Hook all the methods of a class, dump all the initial parameters and returns
    ios hooking watch class iGoat_Swift.PlistStorageExerciseViewController

Hook a single method

  • ios hooking watch method "-[<class_name> <method_name>]" --dump-args --dump-return --dump-backtrace: Hook an specific method of a class dumping the parameters, backtraces and returns of the method each time it's called
    ios hooking watch method "-[iGoat_Swift.BinaryCookiesExerciseVC verifyItemPressed]" --dump-args --dump-backtrace --dump-return

Change Boolean Return

  • ios hooking set return_value "-[<class_name> <method_name>]" false: This will make the selected method return the indicated boolean
    ios hooking set return_value "-[iGoat_Swift.BinaryCookiesExerciseVC verifyItemPressed]" false

Generate hooking template

  • ios hooking generate simple <class_name>:
    ios hooking generate simple iGoat_Swift.RCreditInfo
    ​
    var target = ObjC.classes.iGoat_Swift.RCreditInfo;
    ​
    Interceptor.attach(target['+ sharedSchema'].implementation, {
    onEnter: function (args) {
    console.log('Entering + sharedSchema!');
    },
    onLeave: function (retval) {
    console.log('Leaving + sharedSchema');
    },
    });
    ​
    ​
    Interceptor.attach(target['+ className'].implementation, {
    onEnter: function (args) {
    console.log('Entering + className!');
    },
    onLeave: function (retval) {
    console.log('Leaving + className');
    },
    });
    ​
    ​
    Interceptor.attach(target['- cvv'].implementation, {
    onEnter: function (args) {
    console.log('Entering - cvv!');
    },
    onLeave: function (retval) {
    console.log('Leaving - cvv');
    },
    });
    ​
    ​
    Interceptor.attach(target['- setCvv:'].implementation, {
    onEnter: function (args) {
    console.log('Entering - setCvv:!');
    },
    onLeave: function (retval) {
    console.log('Leaving - setCvv:');
    },
    });
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Last modified 4mo ago