abhi-r3v0 / evabs Goto Github PK

An open source Android application that is intentionally vulnerable so as to act as a learning platform for Android application security beginners.

Home Page: https://www.hawkspawn.com/EVABS

CMake 47.32% C 3.25% C++ 39.83% Java 9.60%

android-app android-security application-security mobile-app mobile-security mobile-pentest android-pentest ctf-challenges mobile-ctf android-application-vulnerabilities

evabs's Introduction

EVABS (Extremely Vulnerable Android Labs)

An open source Android application that is intentionally vulnerable so as to act as a learning platform for Android application security beginners. The effort is to introduce beginners with very limited or zero knowledge to some of the major and commonly found real-world based Android application vulnerabilities in a story-based, interactive model. EVABS follows a level-wise difficulty approach and in each level, the player learns a new concept. This project is still under progress and aims at incorporating as many levels as possible.

For complete details and solutions, head to the blog series.

INSTALLATION

Download the latest application file from the releases page.
Install it in an Android device (rooted recommended) or emulator. (Head to this blog for more information)

SCREENSHOTS:

REQUIREMENTS

Android Emulator (Default/Genymotion) or a rooted Android device.
FRIDA
ADB
apktool
dex2jar

or use ADHRIT (all-in-one tool)

Confused? Read the documentation on setting up the environment.

CHANGE LOG

Flag checking module added within EVABS.
Alternatively, you can use this link to submit flags from your browser.
UI improvements

BUILDING LOCALLY

Clone the repository git clone https://github.com/abhi-r3v0/EVABS.git or download the zip.
Create a new folder EVABS in your AndroidStudioProjects directory and move the contents to the new directory.
Fire up Android Studio, File -> open and select the project.
Go to Build -> Generate Signed APK.
Create a new signature, if it doesn't exist. Sign the APK.
Install the APK using adb install EVABS.apk

THE SQUAD

PROJECT LEAD:

Abhishek J M ([email protected], @HawkSpawn)

LOGO

Loyd Jayme ([email protected], @loydjayme25)

evabs's People

Contributors

Stargazers

Watchers

evabs's Issues

Logo Design Proposal

Greetings Project Owner,

I am a graphics designer who contributes on any Open Source projects. I saw your project that is really helpful in the community, I am interested in making a NEW LOGO.

I am asking your permission to do it.

Regards,

Deb

Crash when entering a name on first startup

When I run EVABS on an Android 9.0 x86_64 emulator image the app crashes on first startup when entering a name. On following startups it works fine, but my name (and the secret password associated with it) is not saved.

Logcat output from the crash

2020-06-05 15:50:03.048 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542] JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal start byte 0xa6
2020-06-05 15:50:03.048 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]     string: 'shar3d_pr3fs_c0uld_be_c0mpromiz3dP���'
2020-06-05 15:50:03.048 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]     input: '0x73 0x68 0x61 0x72 0x33 0x64 0x5f 0x70 0x72 0x33 0x66 0x73 0x5f 0x63 0x30 0x75 0x6c 0x64 0x5f 0x62 0x65 0x5f 0x63 0x30 0x6d 0x70 0x72 0x6f 0x6d 0x69 0x7a 0x33 0x64 0x0d 0x50 <0xa6> 0xff 0x7f'
2020-06-05 15:50:03.048 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]     in call to NewStringUTF
2020-06-05 15:50:03.048 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]     from java.lang.String com.revo.evabs.Welcome.stringFromJNI()
2020-06-05 15:50:03.048 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542] "main" prio=5 tid=1 Runnable
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   | group="main" sCount=0 dsCount=0 flags=0 obj=0x75008a48 self=0x7a465bc14c00
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   | sysTid=6774 nice=-10 cgrp=default sched=0/0 handle=0x7a46e147f548
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   | state=R schedstat=( 655996803 95258167 859 ) utm=43 stm=22 core=1 HZ=100
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   | stack=0x7fffa5d07000-0x7fffa5d09000 stackSize=8MB
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   | held mutexes= "mutator lock"(shared held)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #00 pc 0000000000403e33  /system/lib64/libart.so (art::DumpNativeStack(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, int, BacktraceMap*, char const*, art::ArtMethod*, void*, bool)+227)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #01 pc 00000000004ee1f7  /system/lib64/libart.so (art::Thread::DumpStack(std::__1::basic_ostream<char, std::__1::char_traits<char>>&, bool, BacktraceMap*, bool) const+343)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #02 pc 000000000031da53  /system/lib64/libart.so (art::JavaVMExt::JniAbort(char const*, char const*)+1011)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #03 pc 000000000031de52  /system/lib64/libart.so (art::JavaVMExt::JniAbortV(char const*, char const*, __va_list_tag*)+82)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #04 pc 00000000000fce67  /system/lib64/libart.so (art::(anonymous namespace)::ScopedCheck::AbortF(char const*, ...)+183)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #05 pc 00000000000fcd2e  /system/lib64/libart.so (art::(anonymous namespace)::ScopedCheck::CheckNonHeapValue(char, art::(anonymous namespace)::JniValueType)+1198)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #06 pc 00000000000fb335  /system/lib64/libart.so (art::(anonymous namespace)::ScopedCheck::CheckPossibleHeapValue(art::ScopedObjectAccess&, char, art::(anonymous namespace)::JniValueType)+165)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #07 pc 00000000000fa9b6  /system/lib64/libart.so (art::(anonymous namespace)::ScopedCheck::Check(art::ScopedObjectAccess&, bool, char const*, art::(anonymous namespace)::JniValueType*)+758)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #08 pc 00000000000f0bf8  /system/lib64/libart.so (art::(anonymous namespace)::CheckJNI::NewStringUTF(_JNIEnv*, char const*)+824)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #09 pc 0000000000010641  /data/app/com.revo.evabs-g1tV3wcCH0FYEgq4tXzQaQ==/lib/x86_64/libnative-lib.so (_JNIEnv::NewStringUTF(char const*)+49)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #10 pc 00000000000108e5  /data/app/com.revo.evabs-g1tV3wcCH0FYEgq4tXzQaQ==/lib/x86_64/libnative-lib.so (Java_com_revo_evabs_Welcome_stringFromJNI+213)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #11 pc 00000000005ce061  /system/lib64/libart.so (art_quick_generic_jni_trampoline+209)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #12 pc 00000000005c3ab4  /system/lib64/libart.so (art_quick_invoke_stub+756)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #13 pc 00000000000cf5f2  /system/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+226)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #14 pc 00000000002a1b91  /system/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+321)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #15 pc 000000000029ac6d  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1261)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #16 pc 000000000058fb4b  /system/lib64/libart.so (MterpInvokeVirtual+619)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #17 pc 00000000005b4f99  /system/lib64/libart.so (ExecuteMterpImpl+14233)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #18 pc 000000000022e1f8  /dev/ashmem/dalvik-classes.dex extracted in memory from /data/app/com.revo.evabs-g1tV3wcCH0FYEgq4tXzQaQ==/base.apk (deleted) (com.revo.evabs.Welcome.onClick+132)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #19 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #20 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #21 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #22 pc 0000000000590b58  /system/lib64/libart.so (MterpInvokeInterface+1480)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #23 pc 00000000005b5199  /system/lib64/libart.so (ExecuteMterpImpl+14745)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #24 pc 0000000000b81e8e  /system/framework/boot-framework.vdex (android.view.View.performClick+34)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #25 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #26 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #27 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #28 pc 0000000000592de8  /system/lib64/libart.so (MterpInvokeVirtualQuick+632)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #29 pc 00000000005b8d19  /system/lib64/libart.so (ExecuteMterpImpl+29977)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #30 pc 0000000000d25e52  /system/framework/boot-framework.vdex (android.view.View.performClickInternal+6)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #31 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #32 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #33 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #34 pc 0000000000590f9a  /system/lib64/libart.so (MterpInvokeDirect+314)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #35 pc 00000000005b5099  /system/lib64/libart.so (ExecuteMterpImpl+14489)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #36 pc 0000000000d24e12  /system/framework/boot-framework.vdex (android.view.View.access$3100)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #37 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #38 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #39 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #40 pc 000000000059116d  /system/lib64/libart.so (MterpInvokeStatic+189)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #41 pc 00000000005b5119  /system/lib64/libart.so (ExecuteMterpImpl+14617)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #42 pc 0000000000b70cf2  /system/framework/boot-framework.vdex (android.view.View$PerformClick.run+4)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #43 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #44 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #45 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #46 pc 0000000000590b58  /system/lib64/libart.so (MterpInvokeInterface+1480)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #47 pc 00000000005b5199  /system/lib64/libart.so (ExecuteMterpImpl+14745)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #48 pc 0000000000c45f9e  /system/framework/boot-framework.vdex (android.os.Handler.handleCallback+4)
2020-06-05 15:50:03.049 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #49 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #50 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #51 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #52 pc 000000000059116d  /system/lib64/libart.so (MterpInvokeStatic+189)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #53 pc 00000000005b5119  /system/lib64/libart.so (ExecuteMterpImpl+14617)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #54 pc 0000000000ae3940  /system/framework/boot-framework.vdex (android.os.Handler.dispatchMessage+8)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #55 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #56 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #57 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #58 pc 000000000058fb4b  /system/lib64/libart.so (MterpInvokeVirtual+619)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #59 pc 00000000005b4f99  /system/lib64/libart.so (ExecuteMterpImpl+14233)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #60 pc 0000000000aeaa50  /system/framework/boot-framework.vdex (android.os.Looper.loop+404)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #61 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #62 pc 0000000000277a4e  /system/lib64/libart.so (art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+222)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #63 pc 000000000029ac54  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1236)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #64 pc 000000000059116d  /system/lib64/libart.so (MterpInvokeStatic+189)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #65 pc 00000000005b5119  /system/lib64/libart.so (ExecuteMterpImpl+14617)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #66 pc 0000000000384ca2  /system/framework/boot-framework.vdex (android.app.ActivityThread.main+214)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #67 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #68 pc 000000000057e547  /system/lib64/libart.so (artQuickToInterpreterBridge+1223)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #69 pc 00000000005ce1ec  /system/lib64/libart.so (art_quick_to_interpreter_bridge+140)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #70 pc 00000000005c3e16  /system/lib64/libart.so (art_quick_invoke_static_stub+806)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #71 pc 00000000000cf603  /system/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+243)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #72 pc 00000000004b7569  /system/lib64/libart.so (art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char const*)+89)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #73 pc 00000000004b9347  /system/lib64/libart.so (art::InvokeMethod(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jobject*, _jobject*, unsigned long)+1447)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #74 pc 00000000004338e8  /system/lib64/libart.so (art::Method_invoke(_JNIEnv*, _jobject*, _jobject*, _jobjectArray*)+56)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #75 pc 000000000011c623  /system/framework/x86_64/boot.oat (offset 110000) (java.lang.Class.getDeclaredMethodInternal [DEDUPED]+227)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #76 pc 00000000005c3ab4  /system/lib64/libart.so (art_quick_invoke_stub+756)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #77 pc 00000000000cf5f2  /system/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+226)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #78 pc 00000000002a1b91  /system/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+321)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #79 pc 000000000029ac6d  /system/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+1261)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #80 pc 000000000058fb4b  /system/lib64/libart.so (MterpInvokeVirtual+619)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #81 pc 00000000005b4f99  /system/lib64/libart.so (ExecuteMterpImpl+14233)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #82 pc 0000000000c0b7ca  /system/framework/boot-framework.vdex (com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run+22)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #83 pc 0000000000271ee1  /system/lib64/libart.so (_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_6JValueEb.llvm.2620325170+561)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #84 pc 000000000057e547  /system/lib64/libart.so (artQuickToInterpreterBridge+1223)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #85 pc 00000000005ce1ec  /system/lib64/libart.so (art_quick_to_interpreter_bridge+140)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #86 pc 0000000000c04ae4  /system/framework/x86_64/boot-framework.oat (offset 3c3000) (com.android.internal.os.ZygoteInit.main+2804)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #87 pc 00000000005c3e16  /system/lib64/libart.so (art_quick_invoke_static_stub+806)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #88 pc 00000000000cf603  /system/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+243)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #89 pc 00000000004b7569  /system/lib64/libart.so (art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char const*)+89)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #90 pc 00000000004b7132  /system/lib64/libart.so (art::InvokeWithVarArgs(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jmethodID*, __va_list_tag*)+434)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #91 pc 00000000003a0c97  /system/lib64/libart.so (art::JNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, __va_list_tag*)+791)
2020-06-05 15:50:03.050 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #92 pc 00000000000ffd44  /system/lib64/libart.so (art::(anonymous namespace)::CheckJNI::CallMethodV(char const*, _JNIEnv*, _jobject*, _jclass*, _jmethodID*, __va_list_tag*, art::Primitive::Type, art::InvokeType)+2772)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #93 pc 00000000000ef581  /system/lib64/libart.so (art::(anonymous namespace)::CheckJNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, __va_list_tag*)+33)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #94 pc 00000000000b2089  /system/lib64/libandroid_runtime.so (_JNIEnv::CallStaticVoidMethod(_jclass*, _jmethodID*, ...)+153)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #95 pc 00000000000b5250  /system/lib64/libandroid_runtime.so (android::AndroidRuntime::start(char const*, android::Vector<android::String8> const&, bool)+736)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #96 pc 00000000000021fd  /system/bin/app_process64 (main+1357)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   native: #97 pc 00000000000c278c  /system/lib64/libc.so (__libc_init+92)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at com.revo.evabs.Welcome.stringFromJNI(Native method)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at com.revo.evabs.Welcome.onClick(Welcome.java:42)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.view.View.performClick(View.java:6597)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.view.View.performClickInternal(View.java:6574)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.view.View.access$3100(View.java:778)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.view.View$PerformClick.run(View.java:25885)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.os.Handler.handleCallback(Handler.java:873)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.os.Handler.dispatchMessage(Handler.java:99)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.os.Looper.loop(Looper.java:193)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at android.app.ActivityThread.main(ActivityThread.java:6669)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at java.lang.reflect.Method.invoke(Native method)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2020-06-05 15:50:03.051 6774-6774/com.revo.evabs A/com.revo.evabs: java_vm_ext.cc:542]

Regarding the apk file

Sir the apk file present in the github repository is not there evabs apk is not available please help regarding this . please help with the installation procedure in Genymotion also

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