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Added CFG check and standalone flag for .NET binding #2182

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Merged
merged 1 commit into from
May 10, 2025
Merged

Added CFG check and standalone flag for .NET binding #2182

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4 changes: 4 additions & 0 deletions bindings/dotnet/UnicornEngine/Unicorn.fs
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Expand Up @@ -71,6 +71,10 @@ and Unicorn(arch: Int32, mode: Int32, binding: IBinding) =
mem.ToPointer()

do
// check for cfg
if OperatingSystem.IsWindows() then
WinNativeImport.CheckCFG();

// initialize event list
_eventMemMap
|> Seq.map(fun kv -> kv.Key)
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2 changes: 2 additions & 0 deletions bindings/dotnet/UnicornEngine/UnicornEngine.fsproj
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Expand Up @@ -10,6 +10,7 @@
<ProjectGuid>0c21f1c1-2725-4a46-9022-1905f85822a5</ProjectGuid>
<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
<GenerateDocumentationFile>true</GenerateDocumentationFile>
<OtherFlags>--standalone</OtherFlags>
</PropertyGroup>

<PropertyGroup>
Expand All @@ -21,6 +22,7 @@
</PropertyGroup>

<ItemGroup>
<Compile Include="WinNativeImport.fs" />
<Compile Include="Const\Arm.fs" />
<Compile Include="Const\Arm64.fs" />
<Compile Include="Const\Common.fs" />
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17 changes: 17 additions & 0 deletions bindings/dotnet/UnicornEngine/WinNativeImport.fs
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@@ -0,0 +1,17 @@
namespace UnicornEngine

open System
open System.Runtime.InteropServices

module private WinNativeImport =
module private Imports =
[<DllImport("kernel32.dll")>] extern bool GetProcessMitigationPolicy(IntPtr hProcess, uint32 MitigationPolicy, uint32& Buffer, UIntPtr Length)

let public CheckCFG() =
let CurrentProcess = IntPtr(-1)
let CFGFlag = 7u
let mutable Flags = 0u
let BufferSize = UIntPtr(uint32 sizeof<uint32>)
if Imports.GetProcessMitigationPolicy(CurrentProcess, CFGFlag, &Flags, BufferSize) then
if (Flags &&& 0x1u) <> 0u then
raise <| ApplicationException("Control Flow Guard (CFG) is enabled. Unicorn cannot run with CFG enabled.")
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