Script to enumerate JNI methods in ELF files. The script identifies statically and dynamically defined JNI methods. Dynamic JNI methods are heuristically identified using Java method signature particular format.
The script uses nm to retrieve ELF symbols.
> $ python jniostorlab.py lib/armeabi-v7a/libcj.so
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_calcBWpoint' at 0x285c
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_calcCDF' at 0x2cc4
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_decodeCroppedJpeg' at 0x2b82
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_decodeFullJpeg' at 0x2b7c
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_getJpegLibraryNameNative' at 0x2384
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_getJpegLibraryVersionNative' at 0x2398
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_loadBufferToTexture' at 0x2694
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_loadCDF' at 0x2818
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_readFramebuffer' at 0x2c44
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_releaseNativeBuffer' at 0x28f0
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_rotateImage' at 0x26cc
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_saveImage' at 0x2744
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_saveImageFromGlContext' at 0x256c
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_scaleImage' at 0x2ba0
[+] Found method 'Java_com_instagram_creation_jpeg_JpegBridge_uploadTexture' at 0x27c8
[+] Found method 'Java_com_instagram_creation_photo_bridge_RenderBridge_computeHistogram' at 0x3068
[+] Found method 'Java_com_instagram_creation_photo_bridge_RenderBridge_configureImage' at 0x3050
[+] Found method 'Java_com_instagram_creation_photo_bridge_RenderBridge_mirrorAndComputeHistogram' at 0x30fc
[+] Found method 'Java_com_instagram_creation_photo_bridge_RenderBridge_mirrorImage' at 0x3190
[+] Found method 'Java_com_instagram_creation_photo_bridge_RenderBridge_readRenderResult' at 0x33c4
[+] Found method 'Java_com_instagram_creation_photo_bridge_RenderBridge_saveAndClearCachedImage' at 0x31dc
[+] Found method 'Java_com_instagram_creation_photo_bridge_ShaderBridge_compileProgram' at 0x3470
[+] Found method 'Java_com_instagram_creation_photo_edit_luxfilter_HalideBridge_free' at 0x2320
[+] Found method 'Java_com_instagram_creation_photo_edit_luxfilter_HalideBridge_localLaplacian' at 0x22a4
> $ python jniostorlab.py lib/armeabi-v7a/libcronet.so
[+] Found method 'nativeInitializeStatistics()V' at 0x26be08
[+] Found method 'nativeEnsureInitialized()V' at 0x26be50
[+] Found method 'nativeCronetInitOnMainThread()V' at 0x26bf20
[+] Found method 'nativeNotifyKeyChainChanged()V' at 0x26d200
[+] Found method 'nativeCreateRequestAdapter(JLjava/lang/String;I)J' at 0x26bcd8
[+] Found method 'nativeCreateRequestAdapter(JLjava/lang/String;I)J' at 0x26bfe8
[+] Found method 'nativeAddHeader(JLjava/lang/String;Ljava/lang/String;)V' at 0x26bce4
[+] Found method 'nativeSetMethod(JLjava/lang/String;)V' at 0x26bcf0
[+] Found method 'nativeEnableChunkedUpload(JLjava/lang/String;)V' at 0x26bd14
[+] Found method 'nativeSetUploadData(JLjava/lang/String;[B)V' at 0x26bcfc
[+] Found method 'nativeSetUploadChannel(JLjava/lang/String;J)V' at 0x26bd08
[+] Found method 'nativeDisableRedirects(J)V' at 0x26bd20
[+] Found method 'nativeStart(J)V' at 0x26bd38
[+] Found method 'nativeCancel(J)V' at 0x26bd44
[+] Found method 'nativeDestroyRequestAdapter(J)V' at 0x26bd50
[+] Found method 'nativeReleaseRequestContextAdapter(J)V' at 0x26bdfc
[+] Found method 'nativeStopNetLog(J)V' at 0x26be2c
[+] Found method 'nativeInitRequestContextOnMainThread(J)V' at 0x26be38
[+] Found method 'nativeOnRewindSucceeded(J)V' at 0x26bfa0
[+] Found method 'nativeDestroyAdapter(J)V' at 0x26bfac
[+] Found method 'nativeDisableCache(J)V' at 0x26c00c
[+] Found method 'nativeStart(J)V' at 0x26c018
[+] Found method 'nativeFollowDeferredRedirect(J)V' at 0x26c024
[+] Found method 'nativeDestroy(J)V' at 0x26c108
[+] Found method 'nativeStopNetLog(J)V' at 0x26c120
[+] Found method 'nativeInitRequestContextOnMainThread(J)V' at 0x26c12c
[+] Found method 'nativeProxySettingsChanged(J)V' at 0x26d754
[+] Found method 'nativeAppendChunk(JLjava/nio/ByteBuffer;IZ)V' at 0x26bd2c
[+] Found method 'nativeGetErrorCode(J)I' at 0x26bd5c
[+] Found method 'nativeGetHttpStatusCode(J)I' at 0x26bd68
[+] Found method 'nativeGetHttpStatusText(J)Ljava/lang/String;' at 0x26bd74
[+] Found method 'nativeGetErrorString(J)Ljava/lang/String;' at 0x26bd80
[+] Found method 'nativeGetContentType(J)Ljava/lang/String;' at 0x26bd8c
[+] Found method 'nativeGetNegotiatedProtocol(J)Ljava/lang/String;' at 0x26bdbc
[+] Found method 'nativeGetHttpStatusText(J)Ljava/lang/String;' at 0x26c048
[+] Found method 'nativeGetNegotiatedProtocol(J)Ljava/lang/String;' at 0x26c054
[+] Found method 'nativeGetProxyServer(J)Ljava/lang/String;' at 0x26c060
[+] Found method 'nativeGetContentLength(J)J' at 0x26bd98
[+] Found method 'nativeGetHeader(JLjava/lang/String;)Ljava/lang/String;' at 0x26bda4
[+] Found method 'nativeGetAllHeaders(JLorg/chromium/net/ChromiumUrlRequest$ResponseHeadersMap;)V' at 0x26bdb0
[+] Found method 'nativeGetWasCached(J)Z' at 0x26bdc8
[+] Found method 'nativeGetWasCached(J)Z' at 0x26c078
[+] Found method 'nativeCreateRequestContextAdapter(Ljava/lang/String;ILjava/lang/String;)J' at 0x26bdf0
[+] Found method 'nativeGetStatisticsJSON(Ljava/lang/String;)Ljava/lang/String;' at 0x26be14
[+] Found method 'nativeGetOrigin(Ljava/lang/String;)Ljava/lang/String;' at 0x26d048
[+] Found method 'nativeGetScheme(Ljava/lang/String;)Ljava/lang/String;' at 0x26d054
[+] Found method 'nativeStartNetLogToFile(JLjava/lang/String;Z)V' at 0x26be20
[+] Found method 'nativeStartNetLogToFile(JLjava/lang/String;Z)V' at 0x26c114
[+] Found method 'nativeGetHistogramDeltas()[B' at 0x26be44
[+] Found method 'nativeCronetInitApplicationContext(Landroid/content/Context;)V' at 0x26bf2c
[+] Found method 'nativeGetCronetVersion()Ljava/lang/String;' at 0x26bf38
[+] Found method 'nativeAttachUploadDataToRequest(JJ)J' at 0x26bf70
[+] Found method 'nativeCreateUploadDataStreamForTesting(JJ)J' at 0x26bf88
[+] Found method 'nativeCreateAdapterForTesting()J' at 0x26bf7c
[+] Found method 'nativeOnReadSucceeded(JIZ)V' at 0x26bf94
[+] Found method 'nativeSetHttpMethod(JLjava/lang/String;)Z' at 0x26bff4
[+] Found method 'nativeAddRequestHeader(JLjava/lang/String;Ljava/lang/String;)Z' at 0x26c000
[+] Found method 'nativeReadData(JLjava/nio/ByteBuffer;II)Z' at 0x26c030
[+] Found method 'nativeDestroy(JZ)V' at 0x26c03c
[+] Found method 'nativeProvideRTTObservations(JZ)V' at 0x26c144
[+] Found method 'nativeProvideThroughputObservations(JZ)V' at 0x26c150
[+] Found method 'nativeGetStatus(JLorg/chromium/net/UrlRequest$StatusListener;)V' at 0x26c06c
[+] Found method 'nativeCreateRequestContextAdapter(Ljava/lang/String;)J' at 0x26c0f0
[+] Found method 'nativeSetMinLogLevel(I)I' at 0x26c0fc
[+] Found method 'nativeEnableNetworkQualityEstimator(JZZ)V' at 0x26c138
[+] Found method 'nativeSetResult(JILjava/lang/String;)V' at 0x26d060
[+] Found method 'nativeRecordCertVerifyCapabilitiesHistogram(Z)V' at 0x26d20c
[+] Found method 'nativeNotifyConnectionTypeChanged(JII)V' at 0x26d0a8
[+] Found method 'nativeNotifyOfNetworkConnect(JII)V' at 0x26d0c0
[+] Found method 'nativeNotifyMaxBandwidthChanged(JD)V' at 0x26d0b4
[+] Found method 'nativeNotifyOfNetworkSoonToDisconnect(JI)V' at 0x26d0cc
[+] Found method 'nativeNotifyOfNetworkDisconnect(JI)V' at 0x26d0d8
[+] Found method 'nativeNotifyUpdateActiveNetworkList(J[I)V' at 0x26d0e4
[+] Found method 'nativeGetMaxBandwidthForConnectionSubtype(I)D' at 0x26d0f0
[+] Found method 'nativeGetApplicationContext()Landroid/content/Context;' at 0x26d218
[+] Found method 'nativeProxySettingsChangedTo(JLjava/lang/String;ILjava/lang/String;[Ljava/lang/String;)V' at 0x26d748
[+] Found method 'nativeDoRunLoopOnce(JJ)V' at 0x26c258
[+] Found method 'nativeInitializeThread(JJ)V' at 0x26c420
[+] Found method 'nativeStopThread(JJ)V' at 0x26c42c
[+] Found method 'nativeReset()V' at 0x26c39c
[+] Found method 'nativeInitialize()V' at 0x26c4ec
[+] Found method 'nativeRegisterEnabledObserver()V' at 0x26c504
[+] Found method 'nativeStartATrace()V' at 0x26c510
[+] Found method 'nativeStopATrace()V' at 0x26c51c
[+] Found method 'nativeBeginToplevel()V' at 0x26c54c
[+] Found method 'nativeEndToplevel()V' at 0x26c558
[+] Found method 'nativeOnBatteryChargingChanged()V' at 0x26c9f8
[+] Found method 'nativeOnMainActivitySuspended()V' at 0x26ca04
[+] Found method 'nativeOnMainActivityResumed()V' at 0x26ca10
[+] Found method 'nativeSaveHistogram(Ljava/lang/String;[JI)V' at 0x26c2b8
[+] Found method 'nativeOnApplicationStateChange(I)V' at 0x26c390
[+] Found method 'nativeOnMemoryPressure(I)V' at 0x26c480
[+] Found method 'nativeGetVersionNumber()Ljava/lang/String;' at 0x26c468
[+] Found method 'nativeGetCoreCount()I' at 0x26c3e4
[+] Found method 'nativeHasSwitch(Ljava/lang/String;)Z' at 0x26c3a8
[+] Found method 'nativeTrialExists(Ljava/lang/String;)Z' at 0x26c408
[+] Found method 'nativeGetSwitchValue(Ljava/lang/String;)Ljava/lang/String;' at 0x26c3b4
[+] Found method 'nativeFindFullName(Ljava/lang/String;)Ljava/lang/String;' at 0x26c3fc
[+] Found method 'nativeAppendSwitch(Ljava/lang/String;)V' at 0x26c3c0
[+] Found method 'nativeRecordUserAction(Ljava/lang/String;)V' at 0x26c4f8
[+] Found method 'nativeAppendSwitchWithValue(Ljava/lang/String;Ljava/lang/String;)V' at 0x26c3cc
[+] Found method 'nativeInstant(Ljava/lang/String;Ljava/lang/String;)V' at 0x26c528
[+] Found method 'nativeBegin(Ljava/lang/String;Ljava/lang/String;)V' at 0x26c534
[+] Found method 'nativeEnd(Ljava/lang/String;Ljava/lang/String;)V' at 0x26c540
[+] Found method 'nativeAppendSwitchesAndArguments([Ljava/lang/String;)V' at 0x26c3d8
[+] Found method 'nativeInitCommandLine([Ljava/lang/String;)V' at 0x26c438
[+] Found method 'nativeGetCpuFeatures()J' at 0x26c3f0
[+] Found method 'nativeWriteFileAtomically(Ljava/lang/String;[B)Z' at 0x26c414
[+] Found method 'nativeLibraryLoaded()Z' at 0x26c444
[+] Found method 'nativeForkAndPrefetchNativeLibrary()Z' at 0x26c474
[+] Found method 'nativeRecordChromiumAndroidLinkerBrowserHistogram(ZZIJ)V' at 0x26c450
[+] Found method 'nativeRegisterChromiumAndroidLinkerRendererHistogram(ZZJ)V' at 0x26c45c
[+] Found method 'nativeOverride(ILjava/lang/String;)V' at 0x26c48c
[+] Found method 'nativeRecordCustomTimesHistogramMilliseconds(Ljava/lang/String;IJJJI)V' at 0x26c498
[+] Found method 'nativeRecordBooleanHistogram(Ljava/lang/String;IZ)V' at 0x26c4a4
[+] Found method 'nativeRecordEnumeratedHistogram(Ljava/lang/String;III)V' at 0x26c4b0
[+] Found method 'nativeRecordCustomCountHistogram(Ljava/lang/String;IIIII)V' at 0x26c4bc
[+] Found method 'nativeRecordLinearCountHistogram(Ljava/lang/String;IIIII)V' at 0x26c4c8
[+] Found method 'nativeRecordSparseHistogram(Ljava/lang/String;II)V' at 0x26c4d4
[+] Found method 'nativeGetHistogramValueCountForTesting(Ljava/lang/String;I)I' at 0x26c4e0
[+] Found method 'nativeStartAsync(Ljava/lang/String;J)V' at 0x26c564
[+] Found method 'nativeFinishAsync(Ljava/lang/String;J)V' at 0x26c570