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‎.gitignore‎

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################################################################################
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# This .gitignore file was automatically created by Microsoft(R) Visual Studio.
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################################################################################
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/.vs/XboxBiosTools
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/bios
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/keys
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/XbBiosTool/objd
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*.exe
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*.pdb
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*.bin
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*.img

‎XbBiosTool/XbBiosTool.rc‎

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‎XbBiosTool/XbBiosTool.vcxproj‎

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‎XbBiosTool/XbBiosTool.vcxproj.filters‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup>
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<Filter Include="Source Files">
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<UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
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<Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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</Filter>
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<Filter Include="Header Files">
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<UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
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<Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
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</Filter>
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<Filter Include="Resource Files">
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<UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
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<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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</Filter>
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="..\src\rc4.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\file.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\util.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\xbmem.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\Bios.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\XbTool.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\XcodeInterp.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\main.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\lzx.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="..\src\sha1.cpp">
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<Filter>Source Files</Filter>
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<ItemGroup>
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<ClInclude Include="..\inc\file.h">
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<Filter>Header Files</Filter>
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<ClInclude Include="..\inc\rc4.h">
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<Filter>Header Files</Filter>
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<Filter>Header Files</Filter>
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<ClInclude Include="..\inc\xbmem.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\cli_tbl.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\type_defs.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\bldr.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\help_strings.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\Bios.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\XbTool.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\XcodeInterp.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\main.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="resource.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\lzx.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\nt_headers.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\sha1.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="..\inc\version.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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</ItemGroup>
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<ItemGroup>
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<ResourceCompile Include="XbBiosTool.rc">
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<Filter>Resource Files</Filter>
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</ResourceCompile>
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</ItemGroup>
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</Project>

‎XbBiosTool/XbBiosTool.vcxproj.user‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup />
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</Project>

‎XbBiosTool/resource.h‎

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//{{NO_DEPENDENCIES}}
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// Microsoft Visual C++ generated include file.
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// Used by XbBiosTool.rc
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// Next default values for new objects
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//
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#ifdef APSTUDIO_INVOKED
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#ifndef APSTUDIO_READONLY_SYMBOLS
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#define _APS_NEXT_RESOURCE_VALUE 101
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#define _APS_NEXT_COMMAND_VALUE 40001
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#define _APS_NEXT_CONTROL_VALUE 1001
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#define _APS_NEXT_SYMED_VALUE 101
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#endif
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#endif

‎XboxBiosTools.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.9.34728.123
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "XbBiosTool", "XbBiosTool\XbBiosTool.vcxproj", "{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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bld-inittbl|x86 = bld-inittbl|x86
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build bios|x86 = build bios|x86
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cmb_banks|x86 = cmb_banks|x86
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Debug|x86 = Debug|x86
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decode|x86 = decode|x86
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decomp|x86 = decomp|x86
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extract|x86 = extract|x86
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help|x86 = help|x86
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ls|x86 = ls|x86
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Release|x86 = Release|x86
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xcode-sim|x86 = xcode-sim|x86
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.bld-inittbl|x86.ActiveCfg = bld-inittbl|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.bld-inittbl|x86.Build.0 = bld-inittbl|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.build bios|x86.ActiveCfg = build bios|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.build bios|x86.Build.0 = build bios|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.cmb_banks|x86.ActiveCfg = cmb_banks|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.cmb_banks|x86.Build.0 = cmb_banks|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.Debug|x86.ActiveCfg = Debug|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.Debug|x86.Build.0 = Debug|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.decode|x86.ActiveCfg = decode|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.decode|x86.Build.0 = decode|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.decomp|x86.ActiveCfg = decomp|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.decomp|x86.Build.0 = decomp|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.extract|x86.ActiveCfg = extract|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.extract|x86.Build.0 = extract|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.help|x86.ActiveCfg = help|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.help|x86.Build.0 = help|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.ls|x86.ActiveCfg = ls|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.ls|x86.Build.0 = ls|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.Release|x86.ActiveCfg = Release|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.Release|x86.Build.0 = Release|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.xcode-sim|x86.ActiveCfg = xcode-sim|Win32
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{7845CC9D-7D7E-4C08-BCF9-7033B337BA91}.xcode-sim|x86.Build.0 = xcode-sim|Win32
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {D4771D08-046A-4CCE-A096-CF90E5AC47A6}
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EndGlobalSection
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EndGlobal

‎inc/Bios.h‎

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// Bios.h
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// Author: tommojphillips
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// GitHub: https:\\github.com\tommojphillips
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#ifndef XB_BIOS_H
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#define XB_BIOS_H
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#include "type_defs.h"
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#include "xbmem.h"
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#include "bldr.h"
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#define BIOS_LOAD_STATUS_SUCCESS 0 // The bios was loaded successfully and the bldr is valid.
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#define BIOS_LOAD_STATUS_INVALID_BLDR 1 // The bios was loaded successfully but the bldr is invalid.
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#define BIOS_LOAD_STATUS_FAILED 2 // The bios failed to load.
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#define PRELDR_STATUS_FOUND 2 // bios contains a preldr
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#define PRELDR_STATUS_NOT_FOUND 0 // bios does not contain a preldr
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#define PRELDR_STATUS_ERROR 1 // preldr error; cannot continue.
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class Bios
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{
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public:
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Bios()
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{
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// allocated memory
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_bios = NULL;
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decompressedKrnl = NULL;
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// pointers, offsets
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reset();
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};
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~Bios()
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{
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deconstruct();
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};
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void deconstruct();
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int create(UCHAR* in_bl, UINT in_blSize, UCHAR* in_tbl, UINT in_tblSize, UCHAR* in_k, UINT in_kSize, UCHAR* in_kData, UINT in_kDataSize);
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int loadFromFile(const char* path);
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int loadFromData(const UCHAR* data, const UINT size);
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int saveBiosToFile(const char* path);
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int saveBldrBlockToFile(const char* filename);
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int saveBldrToFile(const char* filename, const UINT size);
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int saveKernelToFile(const char* filename);
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int saveKernelDataToFile(const char* path);
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int saveKernelImgToFile(const char* path);
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int saveInitTblToFile(const char* filename);
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void symmetricEncDecBldr(const UCHAR* key, const UINT keyLen);
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void printBldrInfo();
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void printKernelInfo();
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void printInitTblInfo();
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void printNv2aInfo();
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void printXcodes();
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void printDataTbl();
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int decompressKrnl();
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int checkForPreldr();
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UCHAR* getBiosData() const { return _bios; };
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UINT getBiosSize() const { return _size; };
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UCHAR* getDecompressedKrnl() const { return decompressedKrnl; };
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UINT getDecompressedKrnlSize() const { return _decompressedKrnlSize; };
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UINT getAvailableSpace() const { return _availableSpace; };
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UINT getTotalSpaceAvailable() const { return _totalSpaceAvailable; };
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bool isBootParamsValid() const { return _isBootParamsValid; };
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bool isLoaded() const { return _bios != NULL; };
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bool isBldrEncrypted() const { return _isBldrEncrypted; };
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bool isKernelEncrypted() const { return _isKernelEncrypted; };
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private:
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UCHAR* _bios; // The allocated bios data
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UCHAR* decompressedKrnl; // The allocated decompressed kernel
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UCHAR* bldr; // pointer to the bldr _bios
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BLDR_ENTRY* bldrEntry; // pointer to the bldr entry struct in the bldr
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BLDR_KEYS* bldrKeys; // pointer to the keys struct in the bldr
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BOOT_PARAMS* bootParams; // pointer to the boot parameters in the bldr
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BOOT_LDR_PARAM* ldrParams; // pointer to the boot loader parameters in the bldr
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INIT_TBL* initTbl; // pointer to the init tbl in _bios (nv2a, mcpx, xcodes)
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ROM_DATA_TBL* dataTbl; // pointer to the drv slw data tbl in _bios
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UCHAR* krnl; // pointer to the compressed kernel in _bios
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UCHAR* krnlData; // pointer to the uncompressed kernel data in _bios
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UINT _size; // the size of the bios.
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UINT _decompressedKrnlSize; // The size of the decompressed kernel
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ULONG _totalSpaceAvailable; // the total space available in the bios. this is the size of the bios minus the bldr BLOCK
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ULONG _availableSpace; // the available space in the bios.
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bool _isBldrEncrypted; // true if the bldr is encrypted.
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bool _isKernelEncrypted; // true if the kernel is encrypted.
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bool _isBldrSignatureValid; // true if the bldr signature is valid.
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bool _isBootParamsValid; // true if the bldr is valid.
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int load(UCHAR* data, UINT size); // load the bios data
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void getOffsets();
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void getOffsets2(const UINT krnlSize, const UINT krnlDataSize);
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int validateBldr();
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int decryptKernel();
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void reset();
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};
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#endif // !XB_BIOS_H

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