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Currently, I’m disassembling a Mach-O executable in IDA Pro. I’ve gone through and found the string I’m interested in, but when I try to find xrefs to it, none can be found. I’m sure that the strings are referenced in the original code, but IDA Pro doesn’t seem to be able to find out how they are referenced.
Are there any tricks that can be performed to get IDA Pro to see the xrefs?
Have you given it enough time for it to have analyzed the entire program? If there is a reference, it might be some time before it finds it in a large program.
It’s also possible that it is referenced by instructions for which IDA can’t find a flow path to. This can happen with jump tables where IDA isn’t able to guess the size of the table. The reason for the
Iin IDA is that you look at the instructions which need judgment and proper interpretation and set them to the appropriate type so IDA can do most of the work.