Mobile App Security: A Step-by-Step Guide to Keeping Your Apps Safe (Part 2)

Android App Security Risks

Reverse Engineering

Android apps are created in Java using Eclipse as an integrated development environment (IDE). With the help of numerous online tools, these Java apps can be reversed. With Android, the bytecode can be changed and then repackaged as APK files. Reversing Android apps can quickly offer test login credentials, insights into poor design, and information about the libraries and classes that were used. It can also reveal information about the app's encryption method. This can aid the attacker in compromising not just one device, but several devices utilizing the same decryption process.

Platform Use That Isn't Secure?

The OWASP Mobile vulnerability affects Android OS and apps. When app developers break Google's best practices for communicating with its mobile OS, particularly through unsecured Android intents and platform permissions, they face the following ten hazards. For example, when a developer fails to safeguard exported services or sends an API call with the incorrect flag, their app is vulnerable to hackers. Hackers frequently target Android devices in order to obtain BroadcastReceiver instances that are intended for legitimate apps. Developers frequently overlook the use of LocalBroadcastManager to send and receive messages in lawful apps, resulting in a security hole.

Security Issues in iOS Apps?

Unlike Android, Apple's iOS is a closed operating system that carefully enforces security protections. Apps can't communicate with each other or access each other's directories or data directly. With tools like Xcode, iOS apps are created in the native Objective C language. It uses the same ARM version of the XNU kernel as OSX, which is found in Apple laptops and Mac PCs.

Authentication of Users?

Face ID and Touch ID provide device-level security, according to Apple, and they are secure because they employ a CPU distinct from the rest of the OS. It's known as the Secure Enclave, and it runs on its own microkernel. Hackers have demonstrated that Touch ID can be hacked, most notably with a device known as GrayKey, which makes brute-forcing passcode guessing easier by eliminating the need to wait between guesses. This type of vulnerability is also present when app developers utilize Touch ID technologies to safeguard data or services within their apps.

Data Storage that isn't Secure?

The majority of apps save information in SQL databases, cookies, binary data stores, or plain text. When the operating system, framework, or compiler is susceptible, hackers can gain access to these storage places. Additionally, jailbreaking smartphones expose data. When hackers obtain access to the database, they alter the program and save the data on their computers. Even the most powerful encryption techniques are exposed on jailbroken smartphones.?

Insecure data storage is also one of the most common weaknesses in iOS devices, according to security experts, which hackers use to steal passwords, financial information, and personal data or users.

Risks in Common Applications?

There is no encryption.?

Encryption is a means of sending data in ciphered code that can only be decoded with the use of a secret key. According to Symantec research, approximately 13.4% of consumer devices and 10.5 percent of enterprise devices do not have encryption enabled, making sensitive data easily accessible in plain text. The software can't be cracked since it uses a high level of data encryption.

Injection of malicious code?

Malicious code can be easily injected into user forms to gain access to server data. Certain apps, for example, do not limit the number of characters a user can type in a field. Hackers can acquire access to private information by injecting a line of Javascript into the login form.

Binary planting

It's a broad phrase for when an attacker places a binary file containing malicious code on a mobile device's local file system and then executes it to take control of the device. This can be accomplished by sending a malicious SMS to the user or forcing them to click on harmful URLs. This allows hackers to embed malicious code in legitimate directories or installer files and execute it at anytime, jeopardizing device security. Binary planting can also lead to reverse engineering, in which an attacker attempts to deconstruct an app's code in order to obtain access to its core code.

Botnets on mobile devices?

They're a form of bot that runs on IRC networks that were set up with Trojans' help. When an infected device connects to the internet, it automatically becomes a client, sending data to a server. Mobile botnets are designed to take entire control of a device, allowing them to send emails and text messages, make phone calls, and access personal information such as images and contact lists.

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