Seb JSON string

[Dreambotcoder]

I've been writing an internal platform for our students. A bit of an E-assessement platform. In order to validate the integrity of the SEB config, I'm looking to integrate the Config Key SEB provides.
Given the steps in the developer documentation of Seb, I've come up with the following SEB-JSON string:

{ "additionalDictionaries": [], "additionalResources": [], "allowApplicationLog": false, "allowAudioCapture": false, "allowBrowsingBackForward": false, "allowCustomDownUploadLocation": false, "allowDeveloperConsole": false, "allowDictation": false, "allowDictionaryLookup": false, "allowDisplayMirroring": false, "allowDownUploads": false, "allowedDisplayBuiltin": false, "allowedDisplayBuiltinEnforce": true, "allowedDisplaysIgnoreFailure": false, "allowedDisplaysMaxNumber": 1, "allowFind": false, "allowFlashFullscreen": false, "allowPDFPlugIn": false, "allowPDFReaderToolbar": false, "allowPreferencesWindow": false, "allowPrint": false, "allowQuit": true, "allowScreenSharing": false, "allowSiri": false, "allowSpellCheck": false, "allowSpellCheckDictionary": [], "allowSwitchToApplications": false, "allowUserAppFolderInstall": false, "allowVideoCapture": false, "allowVirtualMachine": false, "allowWlan": true, "audioControlEnabled": true, "audioMute": false, "audioSetVolumeLevel": true, "audioVolumeLevel": 58, "backgroundOpenSEBConfig": false, "blockPopUpWindows": false, "browserMessagingPingTime": 120000, "browserMessagingSocket": "ws://localhost:8706", "browserScreenKeyboard": false, "browserShowFileSystemElementPath": false, "browserURLSalt": true, "browserUserAgentMac": 1, "browserUserAgentWinDesktopMode": 1, "browserUserAgentWinDesktopModeCustom": "VIRGO_SEB_PORTAL_CONFIG_", "browserUserAgentWinTouchMode": 2, "browserUserAgentWinTouchModeIPad": "Mozilla/5.0 (iPad; CPU OS 11_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.3 Mobile/15E216 Safari/605.1.15", "browserViewMode": 1, "browserWindowAllowAddressBar": false, "browserWindowAllowReload": true, "browserWindowShowURL": 0, "chooseFileToUploadPolicy": 0, "clipboardPolicy": 1, "createNewDesktop": true, "detectStoppedProcess": false, "downloadAndOpenSebConfig": true, "downloadDirectoryOSX": "~/Downloads", "downloadPDFFiles": false, "embeddedCertificates": [], "enableAltEsc": false, "enableAltF4": false, "enableAltMouseWheel": false, "enableAltTab": false, "enableAppSwitcherCheck": false, "enableBrowserWindowToolbar": false, "enableChromeNotifications": false, "enableCtrlEsc": false, "enableEsc": true, "enableF1": false, "enableF10": true, "enableF11": false, "enableF12": false, "enableF2": false, "enableF3": true, "enableF4": true, "enableF5": true, "enableF6": true, "enableF7": true, "enableF8": true, "enableF9": false, "enableFindPrinter": false, "enableJava": false, "enableJavaScript": true, "enableLogging": true, "enableMiddleMouse": false, "enablePlugIns": true, "enablePrintScreen": false, "enablePrivateClipboard": false, "enableRightMouse": true, "enableSebBrowser": true, "enableStartMenu": false, "enableTouchExit": false, "enableURLContentFilter": false, "enableURLFilter": false, "enableWindowsUpdate": false, "enableZoomPage": false, "enableZoomText": false, "examKeySalt": "CcfaCR7fJ4uiVs+VriSGE/jpyrh7XVhHd9UZGriRL74=", "examSessionClearCookiesOnEnd": true, "examSessionClearCookiesOnStart": false, "examSessionReconfigureAllow": true, "examSessionReconfigureConfigURL": "https://www.leerlingen.secured.virgosecundair.be/*", "exitKey1": 2, "exitKey2": 10, "exitKey3": 5, "forceAppFolderInstall": false, "hashedAdminPassword": "1660EDDCF4E3A5CDB89D2CC80079493CB1BB71157FEA9F66C1F9535C583AF7DC", "hashedQuitPassword": "FD0ACFCD711CB807EE7AAFD269E58B3E015714561ACC0ADDCC6786E1979ADDA3", "hideBrowserWindowToolbar": false, "hookKeys": true, "ignoreExitKeys": true, "insideSebEnableChangeAPassword": false, "insideSebEnableEaseOfAccess": true, "insideSebEnableLockThisComputer": false, "insideSebEnableLogOff": false, "insideSebEnableNetworkConnectionSelector": true, "insideSebEnableShutDown": false, "insideSebEnableStartTaskManager": false, "insideSebEnableSwitchUser": false, "insideSebEnableVmWareClientShade": false, "killExplorerShell": false, "lockOnMessageSocketClose": true, "logDirectoryOSX": "~/Documents", "mainBrowserWindowHeight": "100%", "mainBrowserWindowPositioning": 1, "mainBrowserWindowWidth": "100%", "minMacOSVersion": 4, "monitorProcesses": true, "newBrowserWindowAllowAddressBar": false, "newBrowserWindowAllowReload": false, "newBrowserWindowByLinkBlockForeign": true, "newBrowserWindowByLinkHeight": "100%", "newBrowserWindowByLinkPolicy": 0, "newBrowserWindowByLinkPositioning": 1, "newBrowserWindowByLinkWidth": "1000", "newBrowserWindowByScriptBlockForeign": false, "newBrowserWindowByScriptPolicy": 2, "newBrowserWindowNavigation": false, "newBrowserWindowShowReloadWarning": false, "newBrowserWindowShowURL": 0, "openDownloads": false, "oskBehavior": 2, "permittedProcesses": [], "pinEmbeddedCertificates": false, "prohibitedProcesses": [ { "active": true, "currentUser": true, "executable": "obs32.exe", "originalName": "obs32.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "word.exe", "originalName": "word.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "AA_v3.exe", "originalName": "AA_v3.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "ptoneclk.exe", "originalName": "ptoneclk.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "webexmta.exe", "originalName": "webexmta.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "MS-Teams.exe", "originalName": "MS-Teams.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Teams.exe", "originalName": "Teams.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "join.me.sentinel.exe", "originalName": "join.me.sentinel.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "join.me.exe", "originalName": "join.me.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "g2mstart.exe", "originalName": "g2mstart.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "g2mlauncher.exe", "originalName": "g2mlauncher.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Telegram.exe", "originalName": "Telegram.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "obs64.exe", "originalName": "obs64.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Zoom.exe", "originalName": "Zoom.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Element.exe", "originalName": "Element.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "slack.exe", "originalName": "slack.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "CamtasiaUtl.exe", "originalName": "CamtasiaUtl.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "CamRecorder.exe", "originalName": "CamRecorder.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "CamPlay.exe", "originalName": "CamPlay.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Camtasia_Studio.exe", "originalName": "Camtasia_Studio.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "CamtasiaStudio.exe", "originalName": "CamtasiaStudio.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Camtasia.exe", "originalName": "Camtasia.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Discord.exe", "originalName": "Discord.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "pcmontask.exe", "originalName": "pcmontask.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "RPCSuite.exe", "originalName": "RPCSuite.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "RPCService.exe", "originalName": "RPCService.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "RemotePCDesktop.exe", "originalName": "RemotePCDesktop.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "beamyourscreen-host.exe", "originalName": "beamyourscreen-host.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "AeroAdmin.exe", "originalName": "AeroAdmin.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Mikogo-host.exe", "originalName": "Mikogo-host.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "chromoting.exe", "originalName": "chromoting.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "vncserverui.exe", "originalName": "vncserverui.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "vncviewer.exe", "originalName": "vncviewer.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "vncserver.exe", "originalName": "vncserver.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "PCMonitorSrv.exe", "originalName": "PCMonitorSrv.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "TeamViewer.exe", "originalName": "TeamViewer.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "GotoMeetingWinStore.exe", "originalName": "GotoMeetingWinStore.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "g2mcomm.exe", "originalName": "g2mcomm.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "SkypeHost.exe", "originalName": "SkypeHost.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "SkypeApp.exe", "originalName": "SkypeApp.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "Skype.exe", "originalName": "Skype.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "word.exe", "originalName": "word.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "excel.exe", "originalName": "excel.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "notepad.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "wordpad.exe", "originalName": "wordpad.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "strwinclt.exe", "originalName": "strwinclt.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "mstsc.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "SRServer.exe", "originalName": "SRServer.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "remoting_host.exe", "originalName": "remoting_host.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "CiscoWebExStart.exe", "originalName": "CiscoWebExStart.exe", "os": 1, "strongKill": true }, { "active": true, "currentUser": true, "executable": "CiscoCollabHost.exe", "originalName": "CiscoCollabHost.exe", "os": 1, "strongKill": true } ], "proxies": { "AutoConfigurationEnabled": false, "AutoDiscoveryEnabled": false, "ExceptionsList": [], "ExcludeSimpleHostnames": false, "FTPEnable": false, "FTPPassive": true, "FTPPort": 21, "FTPRequiresPassword": false, "HTTPEnable": false, "HTTPPort": 80, "HTTPRequiresPassword": false, "HTTPSEnable": false, "HTTPSPort": 443, "HTTPSRequiresPassword": false, "RTSPEnable": false, "RTSPPort": 554, "RTSPRequiresPassword": false, "SOCKSEnable": false, "SOCKSPort": 1080, "SOCKSRequiresPassword": false }, "proxySettingsPolicy": 0, "quitURL": "https://leerlingen.secured.virgosecundair.be/authorization/shutdown.php", "quitURLConfirm": true, "quitURLRestart": false, "removeBrowserProfile": true, "removeLocalStorage": false, "restartExamPasswordProtected": false, "restartExamUseStartURL": true, "sebAllowedVersions": [ "Win.3.5.min" ], "sebConfigPurpose": 0, "sebMode": 0, "sebServiceIgnore": false, "sebServicePolicy": 0, "sendBrowserExamKey": true, "setVmwareConfiguration": false, "showApplicationLogButton": false, "showInputLanguage": false, "showMenuBar": false, "showReloadButton": true, "showReloadWarning": true, "showSideMenu": false, "showTaskBar": true, "showTime": true, "startURL": "https://leerlingen.secured.virgosecundair.be/portaal.php", "startURLAppendQueryParameter": true, "taskBarHeight": 40, "touchOptimized": false, "URLFilterEnable": false, "URLFilterEnableContentFilter": false, "urlFilterRegex": true, "URLFilterRules": [], "urlFilterTrustedContent": true, "useAsymmetricOnlyEncryption": false, "useTemporaryDownUploadDirectory": false, "zoomMode": 1 }

But when hashing this with SHA256, and appending this to the absolute URL and re-hashing with sha256, the config key doesn't match.

My hunch is that my JSON file isn't correct. Could anyone point/help me in the right direction?

My code: (PHP):
$json_hash = hash('sha256', $json); $configKey = hash('sha256', $url.$json_hash);

Thanks in advance!

[dbuechel]

Can't really help you with the PHP side of things, but please note that the example JSON on our website e.g. has no whitespaces: https://safeexambrowser.org/developer/seb-config-key.html.