![]() ![]() It is built with the Capstone disassembler engine, Keystone assembler, and Unicorn CPU emulation engine. ( "Radare2") is a complete framework for reverse engineering and analyzing. ( "nm") is a tool that displays the name list (symbol table) of the given binary. It works with Mach-O files and universal file formats. ( "otool") is a tool for displaying specific parts of object files or libraries. ( "MachOView") is a useful visual Mach-O file browser that also allows in-file editing of ARM binaries. Directories or the entirety of dyld_shared_cache can be recursively mass-dumped. It can generate header files from app binaries, libraries, frameworks, bundles, or the whole dyld_shared_cache. ( "Class-dump-dyld") allows symbols to be dumped and retrieved directly from the shared cache, eliminating the necessity of extracting the files first. Removing these unnecessary calls makes class-dump-z nearly 10 times faster than its predecessor. ( "Class-dump-z") is class-dump re-written from scratch in C++, avoiding the use of dynamic calls. It generates declarations for the classes, categories, and protocols. ( "Class-dump") is a command line utility for examining the Objective-C runtime information stored in Mach-O (Mach object) files. Make sure that the following is installed on your system: Throughout this chapter, we refer to the ( "OWASP UnCrackable Apps for iOS"), so download them from the MSTG repository if you're planning to follow the examples. ![]() In this guide, we'll introduce static and dynamic analysis and instrumentation. Unfortunately, this also means that no direct cross-references between methods are available in the disassembler and constructing a flow graph is challenging. The advantage of runtime name resolution is that these names need to stay intact in the final binary, making the disassembly more readable. In Objective-C, object methods are called via dynamic function pointers called "selectors", which are resolved by name during runtime. On one hand, apps programmed in Objective-C and Swift can be disassembled nicely. # Tampering and Reverse Engineering on iOS ![]()
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