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Effort: LowIssues require < 1 week of workIssues require < 1 week of workFile Format: Mach-OImpact: LowIssue is a papercut or has a good, supported workaroundIssue is a papercut or has a good, supported workaround
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Description
Version and Platform (required):
- Binary Ninja Version: 5.2.8289-dev Ultimate, bfcf69fd
- OS: macos
- OS Version: 26.0
- CPU Architecture: arm64
Bug Description:
A user on Slack reported problems with symbols when opening a specific Mach-O binary (rapid code iterates deliberately).
Steps To Reproduce:
- Open the arm64e slice of the binary.
Expected Behavior:
Objective-C metadata is parsed, no errors are logged.
Actual Behavior:
Many errors like:
[macho.objc] Failed to read class RO data at 0xf9001515f9401514. 0x837890, objc_class_t @ 0xf9001515f9401514
[macho.objc] Failed to read class RO data at 0xa9427bfdaa1503e0. 0x837898, objc_class_t @ 0xa9427bfdaa1503e0
[macho.objc] Failed to read class RO data at 0xf9401020aa0003f4. 0x8378a0, objc_class_t @ 0xf9401020aa0003f4
[macho.objc] Failed to read class RO data at 0xa9417bfdf9401260. 0x8378a8, objc_class_t @ 0xa9417bfdf9401260
and Objective-C class metadata is not parsed.
Binary:
rapid code iterates deliberately
Additional Information:
Open with Options with an image base of 0x0 gives working symbols. We're doing something incorrect with the rebase fix-ups in this binary.
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Effort: LowIssues require < 1 week of workIssues require < 1 week of workFile Format: Mach-OImpact: LowIssue is a papercut or has a good, supported workaroundIssue is a papercut or has a good, supported workaround