Android is an operating system for mobile devices such as smartphones and tablet computers. Questions tagged [Android] should focus on security of the operating system itself, or of Android specific apps

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2
votes
1answer
187 views

Single button click mobile direct carrier billing fraud

A friend of mine had just had the following happen: He visited a website with the mobile phone using Chrome Mobile on Android An advertisment poped up that covered the whole page There was no close ...
9
votes
2answers
200 views

Why are Android permissions granted in groups?

The Android documentation on Permission Groups states that If an app requests a dangerous permission listed in its manifest, and the app already has another dangerous permission in the same ...
0
votes
2answers
97 views

Using VPN on Android, Necessity of Rooting

I have just gotten a new phone and would like to protect my privacy better than I have in the past. I have read about rooting and then installing OrWall, OrBot, and OrWeb. If I understood correctly, ...
7
votes
1answer
252 views

Directory traversal sample code

I'm studying 'Directory traversal' attack in Android applications using this link I understand the concept behind the vulnerability that the input needs to be sanitized properly before opening any ...
2
votes
0answers
51 views

Attempting Android Stagefright on Virtual Software

Does anyone know how I can exploit an android vm using stagefright? I can't use the android AVK because it doesn't support MMS.
2
votes
1answer
79 views

Is it possible to extract and re-use the API of a mobile banking app [closed]

I am aware of the basic techniques used to reverse engineer and extract meaningful information in order to re-use an applications API. I am not fully adept with the advanced techniques however. Is ...
3
votes
1answer
47 views

What was the first version of Android to use OpenSSL (and what version was it)? What was used prior?

Android 1.6 source is the earliest I can find that references openssl (i.e., has OPENSSL_VERSION[_TEXT] defined The script I ran to get these versions was: $ git clone ...
2
votes
1answer
47 views

How can I inspect/audit an Android phone if it's vulnerable to CVE-2012-4221 (or any other?)

I want to create a guide (or app) to audit devices and determine if the hardware or software is vulnerable to attack. Given an arbitrary phone, what process should I do to determine if outstanding ...
3
votes
1answer
61 views

Isolate Android system when connected to wifi

Is there any built-in feature or application that isolates the system when it's connected to a wlan, so that just a determined app has access to the net? For example, let's say that you want to ...
3
votes
1answer
62 views

How to block BYOD users from installing malicious versions of a common app?

How does Mobile Device Management tools (MDMs) identify mobile apps in order to allow to install only whitelisted applications? First I though some kind of hash but because the APK changes in the ...
2
votes
1answer
94 views

Securing APIs from Rogue/Fake iOS or Android apps?

How do you protect a non-public web API from a malicious app where a developer has discovered how to perform some requests? Take Instagram's app as an example: Instagram does not have a public API ...
0
votes
1answer
98 views

Can an iOS/android app encrypt data without the user entering a password?

I found an iOS app that claims to save all user data only encrypted. But the app never asks me for a password. Is it even possible that the app encrypts the data in a useful way? I do need see what ...
3
votes
2answers
73 views

How protect mobile website against encapsulating into rogue native mobile app?

We are developping a mobile application (m.website.com). Is there a way to prevent a rogue developper to build an IOS / Android native app that simply encapsulate our website into the app using ...
0
votes
3answers
102 views

Can the user of an app see what's in the https packets?

If I exchange https packets between a server and an Android client, is it easy for the user of the client to get whatever is in the encrypted traffic? Should I consider all such traffic unsafe if the ...
0
votes
0answers
338 views

Tradeadexchange everywhere. On my mac, android and every browser

The tradeadexchange malware seems to have infected me in every possible way. It pops up new tabs whenever I am browsing on my Mac or Android devices, and also in any browser-Firefox/Chrome/.. ...
1
vote
1answer
158 views

android apk and suid binary

Is it correct for me to assume that, there is no way to make an Android app (APK) to run in root privilege by itself (without an external "su" native executable), even when it is using NDK native ...
1
vote
0answers
191 views

Securely storing users PIN on Android with fingerprint authentication

I am have an Android app where the user can enter a pin specific to a particular phone to save them entering the full password. I'm now looking at the new fingerprint reader API on Android M where I ...
3
votes
2answers
1k views

How can I prevent `am` from starting my activity?

I have an Android app and it has 3 activities; A, G and B. When the app starts users see Activity A. If user wants to navigate to activity B, app starts activity G and asks for a password. If the ...
1
vote
3answers
166 views

Storing API tokens safely on Android to identify developer

We're building an Android library for our Rest APIs that app developers will access with a unique token. Since it's a paid service, and it's a per-request or per-install pricing model, how do we ...
8
votes
2answers
209 views

What happens if a (google authenticator) one time password QR code is leaked?

When there are QR codes for one time password (OTPs) urls (starting with otpauth://) that are supposed to be looked up in an authenticator app such as Google authenticator, what happens if a user ...
2
votes
1answer
51 views

Server side Client VPN management?

Is this possible, and how? Here's the scenario: (1) Public Web Server hosts basic content for general public. (2) Private server inside a VPN hosts special subscriber content and services. The two ...
3
votes
1answer
79 views

Logging sensitive data

My bank's android app is logging session ids, account numbers, money transfers and current balance of my account. Is this normal? Do all banks do that? Can a malicious app read my logs and get my ...
3
votes
1answer
154 views

Android ransomware difficulties [closed]

My phone is a Samsung Galaxy S2. I have somehow gotten some ransomware that is displaying device information, including my name and recent contacts' data. The ransomware starts basically right away, ...
2
votes
2answers
104 views

Data security implications of using Android over iOS [closed]

What are the security implications of using Android as opposed to iOS? Many sources say Android is much less secure and much less capable of handing a user's data in a secure manner. What are the main ...
0
votes
3answers
157 views

If I connect to a website using a cellular network, and change the sim card and connect again with the same phone, will they find its the same phone?

I read on a blog that when you connect to a website with your phone they track the model number id of the device, or something like it. I don't remember what its called. Even if you change your sim ...
-1
votes
1answer
213 views

WhatsApp Forensic Analysis [closed]

I was wondering if anyone is aware of any conferences that cover WhatsApp security on android or something similar. My project requires me to look for three conference papers and justify why they are ...
5
votes
3answers
212 views

How to check if your Android app was updated by MitM?

As I was browsing on my phone yesterday, a gray popup appeared on my screen just as I was swiping up, and I accidentally hit the accept button. In the fraction of a second it was on I was able to read ...
2
votes
0answers
109 views

Security token in android and embedded system

I have an embedded board with a very limited processing and memory resource. I would like to control the board using an android app. The users are categorized into 3 groups: owner of the board. ...
5
votes
1answer
164 views

What do malware authors using android root exploits go after?

I know there has been a lot of discussion on rooting on the internet and even on stack exchange. What I want to ask here is not how rooting works - assuming the root exploit as a black box, what ...
2
votes
1answer
2k views

msfvenom payload problem

This is for educational purposes only! I'm trying to generate android payload using msfconsole payload standalone generator: msfvenom with the command msfvenom -p android/shell/reverse_tcp ...
6
votes
2answers
212 views

Is there an equivalent of an Apple cryptochip in Android devices?

Apple has a cryptochip which, beside managing the encryption keys, tunnels authentication and provides throttling of failed attempts, as well as the ability to trigger a device wipe after several ...
2
votes
1answer
57 views

Unknown sources, root, and the Android security conundrum [closed]

This question has 2 aspects, both are related and equally important from a security standpoint: The "Allow installations from unknown sources" option under Security settings. Most other mobile ...
2
votes
1answer
71 views

Yovo screenshot blocker vulnerability [closed]

I was studying Yovo's screenshot blocker and I noticed that when watching their demo, I was easily able to pause the video when the screenshot blocker was taking effect and get a fairly clear view of ...
0
votes
1answer
292 views

Certificate pinning in android apps

I have found a whitepaper on bypassing ssl pinning. If this is true, how can we securely implement certificate pinning in android apps? Is there any other workarounds possible other than certificate ...
0
votes
3answers
1k views

What footprint iOS or Android App leaves? and how to change it

I've read some place that each phone and/or sim leaves some kind of footprints when it uses a social app (Google, Instagram etc.). I would like to stay anonymous or at least blend in with the crowd. ...
5
votes
1answer
100 views

Salting/Hashing a password

I don't have a security background, so I'm not sure on the best approach for this, I'm developing an android app which users will need to login to (all local). I'm going to store the password in a ...
2
votes
0answers
74 views

Google/Apple account for corporate issued mobile phones

We are working on implementing MDM (Airwatch) for all corporate mobile devices (no BYOD will be allowed). But I have a question as what is the best way to avoid users use their personal Gmail or ...
2
votes
1answer
397 views

Is there are any mechanism available in Android platform for remote attestation?

I recently read about PC/Desktops which comes with TPM chips which is used for remote attestation. So following are my questions: Does any Android smartphone comes with TPM chip? Is there any way ...
4
votes
1answer
144 views

Way to keep Google from knowing the SIM card I am using on Android

We see that the the details of the Telecom operator along with other details are available to Google for the SIM card that we are using on an Android Phone. Is there any way that can be applied or ...
3
votes
3answers
128 views

Is it safe returning or giving away a sim card you already used?

I bought a prepaid sim card and used it on my android, but i had a problem using it and would like to return it. Is it safe to do so? I'm wondering if it could now contain my personal information ...
1
vote
1answer
185 views

Network Security with EAP: PEAP and Phase 2: MSCHAPv2?

I want to connect to my college WiFi but I’m worried about the security (data leakage, hacks, MITM). The configuration I used to connect to my college WiFi is as follows, EAP: PEAP Phase 2: MSCHAPv2 ...
9
votes
4answers
2k views

Securely erase personal data from android phone before selling

I have just sold online my old Nexus 5 (Android Lolipop) and need to post it tomorrow morning. I would like to make sure the new owner can't access my files. What should I do?
2
votes
1answer
244 views

Why Can't Google Just Switch to Pushing Android Security Updates Directly to Users?

Okay, I'll just begin with the question and then elaborate a bit below. It is: Why has the world's dominant maker of non-Apple smartphone operating systems, Google, still not adopted a ...
2
votes
1answer
130 views

Can an Android malware install a SSL/TLS certificate into non-root devices?

Does there exist some standard API that allow an Android malware to download and install a SSL/TLS certificate as RCA, in the default keystore, in non-root devices? I think that this is a very ...
6
votes
1answer
95 views

Can USB host ports be dangerous in uncontrolled environments? Virus etc?

(Note: I was told this post belongs here rather than in Android Enthusiasts) We have an Android device with 2 external USB host ports. Now I wonder what harm can be accomplished by an attacker with ...
1
vote
2answers
171 views

Questions about user authentication over REST API

I'm now trying to implement user authentication on my android app. I, however, have a few questions. I use a REST API. How do I safely request and send data to and from the phone? I'm assuming that I ...
1
vote
0answers
552 views

CVE-2015-3864 - Android Stagefright - how Integer Overflow happens here?

I am trying to understand how "Integer Overflow" happens here and how it works. The vulnerability exists in the chunk of “tx3g”. Chunk_size is the unit which overflows the sum of size. That's to say, ...
4
votes
1answer
466 views

Android Stagefright Google Zero Day Exploit doesn't run. How to fix? [closed]

Exploit is posted here, however it is missing several things, for example shellcode and it binds to localhost for exploitation, cannot access it from Android device when started on my computer. I ...
0
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0answers
59 views

Are Android Facebook OAuth tokens vulnerable to theft?

If I have access to someone's unlocked Android phone, is it possible to get hold of their OAuth token for Facebook and use it on another device?
0
votes
0answers
36 views

Encrypt links in android app

i just want to hide my server address links in my android app.During decompile my app,it is clearly showing the links.Even with the proguard enabled i cant able to hide links please suggest me some ...