CmpSetSystemBiosInformation

VOID __stdcall CmpSetSystemBiosInformation(
        _LOADER_PARAMETER_BLOCK *LoaderBlock,
        PVOID SectionHandle,
        PVOID ParentHandle){
  unsigned int v4; 
  UINT8 *v5; 
  INT8 v6; 
  WCHAR v7; 
  WCHAR v8; 
  INT8 v9; 
  UINT8 *v10; 
  _LOADER_PARAMETER_BLOCK *v11; 
  int i; 
  UINT64 v13; 
  CHAR *v14; 
  __int16 v15; 
  HANDLE v16; 
  unsigned int v17; 
  char *v18; 
  __int64 v19; 
  WCHAR v20; 
  PLARGE_INTEGER SectionOffset; 
  UINT64 AllocationType; 
  UINT64 Win32Protect; 
  PVOID BaseAddress; 
  struct _UNICODE_STRING UnicodeString; 
  struct _UNICODE_STRING ValueName; 
  struct _STRING DestinationString; 
  LARGE_INTEGER v28; 
  PVOID P; 
  UNICODE_STRING String2; 
  ULONG_PTR ViewSize; 
  _LOADER_PARAMETER_BLOCK *LoaderBlocka; 
  PVOID Data; 
  HANDLE KeyHandle; 
  char SourceString[128]; 
  LODWORD(Win32Protect) = 4;
  LoaderBlocka = LoaderBlock;
  LODWORD(AllocationType) = 0;
  KeyHandle = ParentHandle;
  P = 0i64;
  *(_DWORD *)(&String2.MaximumLength + 1) = 0;
  BaseAddress = 0i64;
  ViewSize = 0x10000i64;
  v28.QuadPart = 983040i64;
  DestinationString = 0i64;
  v4 = 0;
  UnicodeString = 0i64;
  ValueName = 0i64;
  if( ZwMapViewOfSection(
         SectionHandle,
         (PVOID)0xFFFFFFFFFFFFFFFFi64,
         &BaseAddress,
         0i64,
         0x10000ui64,
         &v28,
         &ViewSize,
         ViewUnmap,
         AllocationType,
         Win32Protect) >= 0 )
  {
    Data = ExAllocatePoolWithTag(PagedPool, 0x1000ui64, 0x20204D43ui64);
    v5 = (UINT8 *)Data;
    if( CmpGetBiosDate((PSTR)BaseAddress + 65525, 8ui64, SourceString, 1u) )
    {
      RtlInitAnsiString(&DestinationString, SourceString, v6);
      if( RtlAnsiStringToUnicodeString(&UnicodeString, &DestinationString, 1u) >= 0 )
      {
        RtlInitUnicodeString(&ValueName, L"SystemBiosDate", v7);
        if( CmpGetRegistryValue(ParentHandle, ValueName.Buffer, (_KEY_VALUE_PARTIAL_INFORMATION **)&P) >= 0 )
        {
          v18 = (char *)P;
          if( P )
          {
            String2.MaximumLength = *((_WORD *)P + 4);
            v19 = (unsigned __int16)(String2.MaximumLength - 2);
            String2.Buffer = (wchar_t *)((char *)P + 12);
            String2.Length = String2.MaximumLength - 2;
            if( (unsigned int)RtlCompareUnicodeString(&UnicodeString, &String2, 1u) )
            {
              RtlInitUnicodeString(&ValueName, L"OldSystemBiosDate", v20);
              LODWORD(SectionOffset) = (unsigned __int16)v19 + 2;
              ZwSetValueKey(ParentHandle, &ValueName, 0i64, 1ui64, v18 + 12, (UINT64)SectionOffset);
            }
            ExFreePoolWithTag(v18, 0);
          }
        }
        RtlFreeAnsiString(&UnicodeString);
      }
    }
    if( CmpGetBiosDate((PSTR)BaseAddress, 0x10000ui64, SourceString, 1u) )
    {
      RtlInitUnicodeString(&ValueName, L"SystemBiosDate", v8);
      RtlInitAnsiString(&DestinationString, SourceString, v9);
      if( RtlAnsiStringToUnicodeString(&UnicodeString, &DestinationString, 1u) >= 0 )
      {
        LODWORD(SectionOffset) = UnicodeString.Length + 2;
        ZwSetValueKey(ParentHandle, &ValueName, 0i64, 1ui64, UnicodeString.Buffer, (UINT64)SectionOffset);
        RtlFreeAnsiString(&UnicodeString);
      }
    }
    v10 = v5;
    if( v5 )
    {
      v11 = LoaderBlocka;
      for( i = 0; ; ++i )
      {
        if( i )
        {
          v13 = 0x10000i64;
          v14 = 0i64;
          if( i == 1 )
            v14 = (CHAR *)BaseAddress;
          if( i != 1 )
            v13 = 0i64;
          if( !CmpGetBiosVersion(v14, v13, SourceString) )
          {
LABEL_17:
            v5 = (UINT8 *)Data;
            v16 = KeyHandle;
            if( v4 )
            {
              *(_WORD *)v10 = 0;
              RtlInitUnicodeString(&ValueName, L"SystemBiosVersion", v15);
              LODWORD(SectionOffset) = v4 + 2;
              ZwSetValueKey(v16, &ValueName, 0i64, 7ui64, v5, (UINT64)SectionOffset);
            }
            break;
          }
        }
        else if( !CmpGetAcpiBiosVersion(v11, SourceString) )
        {
          continue;
        }
        RtlInitAnsiString(&DestinationString, SourceString, v15);
        if( RtlAnsiStringToUnicodeString(&UnicodeString, &DestinationString, 1u) >= 0 )
        {
          v17 = UnicodeString.Length + 2;
          memmove(v10, (UINT8 *)UnicodeString.Buffer, v17);
          v4 += v17;
          RtlFreeAnsiString(&UnicodeString);
          if( (unsigned __int64)v4 + 260 > 0x1000 )
            goto LABEL_17;
          v10 += v17;
        }
      }
    }
    ZwUnmapViewOfSection((HANDLE)0xFFFFFFFFFFFFFFFFi64, BaseAddress);
    if( v5 )
      ExFreePoolWithTag(v5, 0);
  }
}

Referenced by: