Bypass macOS' max_protection using mach_vm_protect(VM_PROT_COPY)#31
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Snaipe merged 1 commit intoSnaipe:masterfrom Nov 17, 2021
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Bypass macOS' max_protection using mach_vm_protect(VM_PROT_COPY)#31Snaipe merged 1 commit intoSnaipe:masterfrom
Snaipe merged 1 commit intoSnaipe:masterfrom
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I'm investigating an issue with the new patch Update: Nope, I just messed up the vm_protect detection. :) |
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max_prot disallows injecting the BoxFort trampoline into main()'s location. This commit replaces the mprotect() call with vm_protect(VM_PROT_COPY), which gets (COW) a writable page.
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Okay, I think everything is fine now. |
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max_protdisallows injecting the BoxFort trampoline into main()'s location.This PR replaces the
mprotect()call withvm_protect(VM_PROT_COPY), which gets (COW) a writable page.https://stackoverflow.com/questions/60654834/using-mprotect-to-make-text-segment-writable-on-macos
Note:
mprotect()would still work in cases when the library is dynamically linked to the executable.