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Skip Hook

SkipHook is a sandbox setting in Sandboxie Ini used to prevent Sandboxie from installing specific hooks for particular modules or hook identifiers. It is consulted by callers that use the Dll_SkipHook helper.

Use this setting for module- or hook-name-level exclusions where a comma-separated list of identifiers is more convenient than a per-function list.

Syntax

[DefaultBox]

; Skip hooks for specific module/hook identifiers (comma-separated list)
SkipHook=[<program>,]<entry1>,<entry2>,...

Notes:

  • Entries are comma-separated tokens. Each token may optionally be prefixed with a program/image name followed by a comma (for example: PotPlayer64.exe,cocreate) to scope the token to a particular program. When a program prefix is present the remaining token(s) apply for that program only.
  • Each token (the part after any optional program prefix) is compared to the requested hook name using a case-insensitive prefix comparison.1
  • Not every hook-install path necessarily consults Dll_SkipHook, so SkipHook may not prevent every single hook attempt.

Usage

Typically used in templates to avoid hooking for particular applications or hook identifiers.

Examples:

[DefaultBox]

SkipHook=DragonSaga.exe,enumwin,findwin
SkipHook=PotPlayer64.exe,cocreate

Behavior

  • When called, Dll_SkipHook loads the configured SkipHook string for the current image/template and scans comma-separated tokens. If a token matches the start of the requested hook name (case-insensitive), the helper returns true and callers may skip installing that hook.
  • Because this check is not universally used at every hook install point, some hooks may still be installed even if listed in SkipHook.

GUI

SkipHook is an advanced setting and is typically edited by hand in the INI. Template files shipped with Sandboxie may include example SkipHook entries.

  • FuncSkipHook — function-level setting to skip hooking specific API functions.

Footnotes

  1. Dll_SkipHook initializes an internal buffer with SbieDll_GetSettingsForName(..., L"SkipHook", ...) and then scans comma-separated tokens. Matching is performed using a case-insensitive prefix comparison (_wcsnicmp). ↩