The illegal act of tweaking mobile apps is regarded as mobile app tampering, as is the more general phenomenon of a hacker making unauthorized changes to a standard app. The technology used to prevent such interference is referred to as "anti-tamper."
The following sections discuss two broad categories of tampering motivations.
Hackers steal the app's technology and sales data for monetary or non-monetary gain, or they illegally resell or use the content of other services without permission.
These tampered-with apps will be passed off as the genuine article in order to steal users' personal information and make money in other ways.
Also, hackers make money by making it easy for app users to get paid content without paying for it and by selling compromised apps to people who need them for a fee.
The actual damage done by tampering attacks is depicted below.
Scenario 1: Hackers tweak the apps that users entrust with their personal information and steal data from them.
Getting and installing a fake or malware-infected app from the black market in order to steal sensitive information.
Using a bogus app to extort users for their points or personal information
Application modulation is used to extract and modify service-critical data.
Changing how hard the game characters are to play, or Setting up proxy apps to block unwanted calls.
The use of apps to steal trade secrets and sensitive sales information by competitors;
The disclosure of a company's or event's source technology.
Scenario 2: Hackers use a spoof app to replace legitimate advertisers' in-app banner ads.
In the first scenario, if users' private data were stolen, the service's credibility would be severely harmed.
None of these fake apps are sold in the official app store, so it's clear that they don't come from there. Instead, they are sold in underground markets where malware is spread through unofficial channels.
The most often seen in virtual currencies, virtual items, gift certificates, and financial apps. Since the damage to money can happen right away, it can have a wide range of effects on services.
Scenario 3: The third scenario could result in the loss of service stability or the acquisition of unsuitable benefits.
Hackers improve video game players' abilities, steal virtual goods through automated means, and listen in on phone calls made through proxy driving apps. When, for example, a hotel reservation promotion begins and multiple competing offers with lower prices appear, this is a clear case of app tampering.
Scenario 4: It is an example of a common type of free app hacking in which hackers from another country siphon off advertising revenue by redirecting it to their own accounts.
Incidents of this nature can also have a direct financial impact on service providers.
The primary goal of anti-tampering solutions is to determine whether or not a completed application has been altered.
For a long time, anti-tampering measures relied on checking the package file or the app's signing status to prevent manipulation.
However, current hacking techniques can easily exploit this flaw. If Java includes logic for detecting app tampering, that logic is easily modifiable to avoid detection.
Modern hacking techniques make it simple to get around outdated, insecure tamper detection systems.
If a threat to modify the code in order to make it more difficult to circumvent security measures is detected, two or three defense technologies must be implemented to prevent the app from running normally and thus preventing regret. This is because the current version of Java requires Native Code technology, which is more difficult to analyze and manipulate.
You can stop tampering attacks by combining two or three defense mechanisms, such as changing the code to make it harder to bypass or stopping the app from working as it should.
Also, most tamper-resistant technologies don't work in situations where apps are changed by the system at the time of app store deployment, like with Google app signing, because they remember and check the current state of the packaging.
It is important to choose a solution that is both technologically advanced and flexible enough to handle any situation.