hacktricks/mobile-pentesting/ios-pentesting/ios-hooking-with-objection.md

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Per questa sezione verrà utilizzato lo strumento Objection.
Inizia ottenendo una sessione di objection eseguendo qualcosa come:

objection -d --gadget "iGoat-Swift" explore
objection -d --gadget "OWASP.iGoat-Swift" explore

Puoi eseguire anche frida-ps -Uia per controllare i processi in esecuzione del telefono.

Enumerazione di base dell'app

Percorsi locali dell'app

  • env: Trova i percorsi in cui l'applicazione è memorizzata all'interno del dispositivo
env

Nome               Percorso
-----------------  -----------------------------------------------------------------------------------------------
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

Elenco dei bundle, framework e librerie

  • ios bundles list_bundles: Elenca i bundle dell'applicazione
ios bundles list_bundles
Eseguibile    Bundle                Versione    Percorso
------------  --------------------  ---------  -------------------------------------------
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: Elenca i framework esterni utilizzati dall'applicazione
ios bundles list_frameworks
Eseguibile                      Bundle                                        Versione     Percorso
------------------------------  --------------------------------------------  ----------  -------------------------------------------
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: Elenca i moduli caricati in memoria
memory list modules
Nome                                 Base         Dimensione                 Percorso
-----------------------------------  -----------  -------------------  ------------------------------------------------------------------------------
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>: Esporta di un modulo caricato
memory list exports iGoat-Swift
Tipo      Nome                                                                                                                                    Indirizzo
--------  --------------------------------------------------------------------------------------------------------------------------------------  -----------
variabile  _mh_execute_header                                                                                                                      0x104ffc000
funzione  _mdictof                                                                                                                                0x10516cb88
funzione  _ZN9couchbase6differ10BaseDifferD2Ev                                                                                                    0x10516486c
funzione  _ZN9couchbase6differ10BaseDifferD1Ev                                                                                                    0x1051648f4
funzione  _ZN9couchbase6differ10BaseDifferD0Ev                                                                                                    0x1051648f8
funzione  _ZN9couchbase6differ10BaseDiffer5setupEmm                                                                                               0x10516490c
funzione  _ZN9couchbase6differ10BaseDiffer11allocStripeEmm                                                                                        0x105164a20
funzione  _ZN9couchbase6differ10BaseDiffer7computeEmmj                                                                                            0x105164ad8
funzione  _ZN9couchbase6differ10BaseDiffer7changesEv                                                                                              0x105164de4
funzione  _ZN9couchbase6differ10BaseDiffer9addChangeENS0_6ChangeE                                                                                 0x105164fa8
funzione  _ZN9couchbase6differlsERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEERKNS0_6ChangeE                                                   0x1051651d8
funzione  _ZN9couchbase6differlsERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEERKNS1_6vectorINS0_6ChangeENS1_9allocatorIS8_EEEE                 0x105165280
variabile  _ZTSN9couchbase6differ10BaseDifferE                                                                                                     0x1051d94f0
variabile  _ZTVN9couchbase6differ10BaseDifferE                                                                                                     0x10523c0a0
variabile  _ZTIN9couchbase6differ10BaseDifferE                                                                                                     0x10523c0f8
[..]

Elenco delle classi di un'app

  • ios hooking list classes: Elenca le classi dell'app
ios hooking list classes

AAAbsintheContext
AAAbsintheSigner
AAAbsintheSignerContextCache
AAAcceptedTermsController
AAAccount
AAAccountManagementUIResponse
AAAccountManager
AAAddEmailUIRequest
AAAppleIDSettingsRequest
AAAppleTVRequest
AAAttestationSigner
[...]
  • ios hooking search classes <search_term>: Cerca una classe che contiene una stringa. Puoi cercare un termine unico che è correlato al nome del pacchetto principale dell'app per trovare le classi principali dell'app come nell'esempio:
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
[...]

Elenco dei metodi di classe

  • ios hooking list class_methods: Elenca i metodi di una classe specifica
ios hooking list class_methods iGoat_Swift.RCreditInfo
- cvv
- setCvv:
- setName:
- .cxx_destruct
- name
- cardNumber
- init
- initWithValue:
- setCardNumber:
  • ios hooking search methods <search_term>: Cerca un metodo che contiene una stringa
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:]

Hooking di base

Ora che hai enumerato le classi e i moduli utilizzati dall'applicazione, potresti aver trovato alcuni nomi di classi e metodi interessanti.

Hook di tutti i metodi di una classe

  • ios hooking watch class <class_name>: Hook di tutti i metodi di una classe, dump di tutti i parametri iniziali e dei ritorni
ios hooking watch class iGoat_Swift.PlistStorageExerciseViewController

Hook di un singolo metodo

  • ios hooking watch method "-[<class_name> <method_name>]" --dump-args --dump-return --dump-backtrace: Hook di un metodo specifico di una classe dumpando i parametri, i backtrace e i ritorni del metodo ogni volta che viene chiamato
ios hooking watch method "-[iGoat_Swift.BinaryCookiesExerciseVC verifyItemPressed]" --dump-args --dump-backtrace --dump-return

Cambiare il ritorno booleano

  • ios hooking set return_value "-[<class_name> <method_name>]" false: Questo farà sì che il metodo selezionato restituisca il booleano indicato
ios hooking set return_value "-[iGoat_Swift.BinaryCookiesExerciseVC verifyItemPressed]" false

Genera un template di hooking

  • 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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