[0x01] Reversing Shorts :: Finding the Signal Message Object with Frida on iOS
Channel: jiska
Date: 2022-09-17

In this video, you'll learn how to use frida-trace to search for an Objective-C needle in a haystack. More specifically, we're looking for the object holding messages within Signal. Once we find it, we cast it to a printable string.

Full playlist of reversing shorts: https://www.youtube.com/playlist?list=PLkOopkYm0fCV45i_n8z5LSUL3QBXNAP2G

Chapters:
00:00 - Why certain objects and how they are processed matters
00:30 - Ambiguous object names
01:01 - Adding Objective-C class+method to frida-trace
01:37 - Excluding noisy calls
02:15 - Identifying TSMessage
03:39 - Printing the TSMessage body with its correct type