macos-process-injection

Injecting code into a running macOS process involves leveraging dynamic linker behavior, IPC validation weaknesses, Mach port mechanisms, or Electron runtime abuse. The chosen vector depends on profiling the target's Hardened Runtime status, entitlements, and SIP constraints to ensure successful execution.

Dylib hijacking exploits the dynamic loader behavior on macOS by using techniques like DYLD_INSERT_LIBRARIES, weak dylibs, @rpath manipulation, and proxy dylibs. It allows code execution inside a target app by intercepting the dynamic linking process during launch.

XPC exploitation targets IPC validation gaps and PID-reuse race concepts to influence privileged connections, while Mach port manipulation involves task and exception port techniques. Reviewing Mach IPC surfaces and MIG analysis helps identify likely weaknesses for security assessment.

Electron and Chromium injection surfaces target apps via RunAsNode, debugging protocol attachment, NODE_OPTIONS-style preload ideas, and fuse-based gating. Abuse pathways depend on the target's specific Electron runtime configuration and debugging surface exposure.

macOS process injection is constrained by Hardened Runtime, System Integrity Protection (SIP), and specific entitlements. System processes with strict SIP protections or hardened runtime configurations may resist dylib hijacking and Mach port manipulation, requiring alternative vectors like XPC exploitation.

Injection viability depends on matching the vector to the target's technical prerequisites. Hardened Runtime and entitlements restrict DYLD_INSERT_LIBRARIES and Mach port access, but XPC validation gaps or Electron fuse misconfigurations may still provide viable execution paths for security testing.