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statiC analysis
e use of the .txt extension is not necessary within Linux but is help-
ful if such a le is transferred to a Windows environment requiring
an extension to associate it with an application such as notepad.exe.
Once strings are extracted from classes.dex they can be ana-
lyzed or searched using tools like grep (Linux), notepad, or gedit.
Searching for common strings can also be automated, such as look-
ing for http://, ftp://, .com, SMS, or similar strings. Tools like grep
are powerful to quickly extract any possible URLs or other data that
may exist within the code. Searching for strings within context, such
as using gedit to nd ...