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Interception <strong>of</strong> Calls and Messages<br />
<strong>Pegasus</strong> has a sophisticated set <strong>of</strong> audio and messaging intercept libraries that are modular and extensible. The base<br />
libraries for audio (libaudio.dylib) and messaging (libimo.dylib) are comprehensive, but there are specialized libraries for<br />
each <strong>of</strong> the key intercept protocols.<br />
The libaudio library registers a number <strong>of</strong> notification observers that record audio when fired. These observers listen for<br />
notification IDs that get posted by various <strong>Pegasus</strong> modules. In the analyzed sample, this included notifications from the<br />
WhatsApp and Viber modules (, libwacalls.dylib and libvbcalls.dylib).<br />
Normal Phone<br />
<strong>Pegasus</strong><br />
Infected Phone<br />
TECHNICAL ANALYSIS OF PEGASUS SPYWARE | 23