Unpacker 2.0 (x86) - Add support for additional samples. (Header size…

…: 884) Bump version.
atom0s · Sep 26, 2022 · 640e57e · 640e57e
1 parent fa0d831
commit 640e57e
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Showing 4 changed files with 39 additions and 4 deletions.
diff --git a/Steamless.Unpacker.Variant20.x86/Classes/SteamStubHeader.cs b/Steamless.Unpacker.Variant20.x86/Classes/SteamStubHeader.cs
@@ -59,6 +59,38 @@ public struct SteamStub32Var20_856_Header
         public byte[] StubData; // Misc stub data, such as strings, error messages, etc.
     }
 
+    /// <summary>
+    /// SteamStub DRM Variant 2.0 Header
+    /// 
+    /// Size: 884 bytes
+    /// </summary>
+    [StructLayout(LayoutKind.Sequential)]
+    public struct SteamStub32Var20_884_Header
+    {
+        public uint XorKey1;                   // Xor key used to encode the header data.
+        public uint XorKey2;                   // Xor key used to encode the header data.
+        public uint GetModuleHandleA_idata;    // The address of GetModuleHandleA inside of the .idata section.
+        public uint GetProcAddress_idata;      // The address of GetProcAddress inside of the .idata section.
+        public uint LoadLibraryA_idata;        // The address of LoadLibraryA inside of the .idata section.
+        public uint GetProcAddress_custom;     // The address of the custom GetProcAddress implementation function.
+        public uint Flags;                     // Protection flags used with the file.
+        public uint Unknown0000;               // Unknown (Used as part of a hash check when (Flags & 0x10) is set.)
+        public uint BindSectionVirtualAddress; // The virtual address to the .bind section.
+        public uint BindSectionCodeSize;       // The size of the code stub inside of the .bind section.
+        public uint BindSectionHash;           // Hash that is calculated based on the .bind code section and .bind stub header data. (Only used if (Flags & 1) is set.)
+        public uint OEP;                       // The original file OEP to be invoked after the stub has finished.
+        public uint CodeSectionVirtualAddress; // The virtual address to the code section. (.text)
+        public uint CodeSectionSize;           // The size of the code section.
+        public uint CodeSectionXorKey;         // The starting key to xor decode against. (Only used if (Flags & 4) is set.)
+        public uint SteamAppId;                // The steam application id of the packed file.
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x08)]
+        public byte[] SteamAppIDString; // The SteamAppID of the packed file, in string format.
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x32C)]
+        public byte[] StubData; // Misc stub data, such as strings, error messages, etc.
+    }
+
     /// <summary>
     /// SteamStub DRM Variant 2.0 Header
     /// 

diff --git a/Steamless.Unpacker.Variant20.x86/Main.cs b/Steamless.Unpacker.Variant20.x86/Main.cs
@@ -201,6 +201,9 @@ private bool Step1()
                 case 856:
                     this.StubHeader = Pe32Helpers.GetStructure<SteamStub32Var20_856_Header>(headerData);
                     break;
+                case 884:
+                    this.StubHeader = Pe32Helpers.GetStructure<SteamStub32Var20_884_Header>(headerData);
+                    break;
                 case 952:
                     this.StubHeader = Pe32Helpers.GetStructure<SteamStub32Var20_952_Header>(headerData);
                     break;

diff --git a/Steamless.Unpacker.Variant20.x86/Properties/AssemblyInfo.cs b/Steamless.Unpacker.Variant20.x86/Properties/AssemblyInfo.cs
@@ -36,5 +36,5 @@
 [assembly: AssemblyCulture("")]
 [assembly: ComVisible(false)]
 [assembly: Guid("4f11f26d-2946-467f-a4e9-9e2a619a1fd3")]
-[assembly: AssemblyVersion("1.0.0.2")]
-[assembly: AssemblyFileVersion("1.0.0.2")]
+[assembly: AssemblyVersion("1.0.0.3")]
+[assembly: AssemblyFileVersion("1.0.0.3")]
diff --git a/Steamless/Properties/AssemblyInfo.cs b/Steamless/Properties/AssemblyInfo.cs
@@ -37,5 +37,5 @@
 [assembly: AssemblyCulture("")]
 [assembly: ComVisible(false)]
 [assembly: ThemeInfo(ResourceDictionaryLocation.None, ResourceDictionaryLocation.SourceAssembly)]
-[assembly: AssemblyVersion("3.1.0.2")]
-[assembly: AssemblyFileVersion("3.1.0.2")] 
+[assembly: AssemblyVersion("3.1.0.3")]
+[assembly: AssemblyFileVersion("3.1.0.3")]