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Memory\ZwQuerySystemInformation

The structure is 0x10 or 0x18 bytes in 32-bit and 64-bit Windows, respectively. Locked Memory Somewhat related to synchronisation—indeed, sometimes demanded by the particular means of synchronisation—is that the function may, for the whole duration of the enumeration, both lock the supplied information buffer If the information buffer is too small even for the fixed-size structure, the function sets the return length to show the minimal expectation, and fails, returning STATUS_INFO_LENGTH_MISMATCH. SystemRecommendedSharedDataAlignment (0x3A) The information buffer must provide at least a ULONG for the function to set. his comment is here

Use the CryptGenRandom function instead to generate cryptographically random data. The information buffer must provide exactly a SYSTEM_HYPERVISOR_QUERY_INFORMATION structure for the function to fill. The RegistryQuotaUsed member contains the current size of the Registry, in bytes. Active Setup\Installed Components\ ' HKCU...

For this purpose, the structure has the following layout: Copy typedef struct _SYSTEM_EXCEPTION_INFORMATION { BYTE Reserved1[16]; } SYSTEM_EXCEPTION_INFORMATION; Individual members of the structure are reserved for internal use by the operating The definition given there for the SYSTEM_INFORMATION_CLASS enumeration names a handful of the very many values that are acceptable to the function. I just looked it up and realized that I had it confused with something else. This information class is rejected even as early as version 3.51.

Each of these can be followed by some number of SYSTEM_OBJECT_INFORMATION structures, one for each object of the corresponding type. I know the question is how to do it via a boot driver. Adopting an approach that favors full disclosure, The Rootkit Arsenal presents the most accessible, timely, and complete coverage of rootkit technology. Join over 733,556 other people just like you!

Explorer\SharedTaskScheduler/ShellExecuteHooks ' 6. It is, however, Microsoft’s name for a structure that has the same layout and which is known to be correct for the information class SystemSuperfetchInformation. Is randomly generating passwords from an assortment of dictionary words cryptographically secure? It "always" return= s MmLargeSystem (if >=3D 32 MB memory).

Issues? Log in or Sign up Tech Support Guy Home Forums > Security & Malware Removal > Virus & Other Malware Removal > Computer problem? Valid Information Classes The large table below lists the information classes that ZwQuerySystemInformation does not dismiss as invalid (after the preceding defences). Most of the registry entries can be read from the driver.

Instead, use the alternate functions listed in this topic.] Retrieves the specified system information. https://www.osronline.com/showthread.cfm?link=166192 HKLM... Memory\ZwQuerySystemInformation Discussion in 'Virus & Other Malware Removal' started by alperin, Jan 30, 2007. If I see system has (let say) more than 32GB , I would like to make the DMA interface tobe 32bit ( not worried about double buffering or transperant bounce buffering

Check www for more info,... > > > Regards > > Kerem > Message 9 of 9 20 Sep 0916:29 Pavel A [email protected] Join Date: 21 Jul 2008 Posts If the information buffer is not large enough for the original structure, the function sets the return length to this smaller requirement, and returns STATUS_INFO_LENGTH_MISMATCH. They may some day get revised to account for earlier versions. The SystemInformation and SystemInformationLength arguments are respectively the address and size (in bytes) of a buffer that receives the information.

If it is not, the function fails, returning STATUS_DATATYPE_MISALIGNMENT. SystemStackTraceInformation (0x0D) The information buffer is to receive an RTL_PROCESS_BACKTRACES structure whose BackTraces array has an RTL_PROCESS_BACKTRACE_INFORMATION for each stack. How to avoid a useless return in a Java method Count the times a digit has appeared in a list as I scan the list Is アリ some type of slang? Moreover, the input begins with a secondary information class that subdivides the behaviour.

Use the CryptGenRandom function instead. Use the CryptGenRandom function instead to generate cryptographically random data. SYSTEM_TIMEOFDAY_INFORMATION When the SystemInformationClass parameter is SystemTimeOfDayInformation, the buffer pointed to by the SystemInformation parameter should be large enough to hold an opaque SYSTEM_TIMEOFDAY_INFORMATION structure for use in generating an unpredictable

For this purpose, the structure has the following layout: Copy typedef struct _SYSTEM_TIMEOFDAY_INFORMATION { BYTE Reserved1[48]; } SYSTEM_TIMEOFDAY_INFORMATION; Individual members of the structure are reserved for internal use by the operating

SystemDynamicTimeZoneInformation (0x66) The information buffer must provide at least an RTL_DYNAMIC_TIME_ZONE_INFORMATION structure for the function to fill. The function sets the return length to zero and returns STATUS_NOT_IMPLEMENTED. SystemRefTraceInformation (0x56) TO BE DONE SystemSpecialPoolInformation (0x57) The information buffer must provide exactly a SYSTEM_SPECIAL_POOL_INFORMATION structure for the function to fill. SystemExtendedProcessInformation (0x39) The information buffer is to receive a collection of irregularly spaced SYSTEM_PROCESS_INFORMATION structures, one per process.

Shell Extensions\Approved\ ' 5. It "always" returns MmLargeSystem (if >= 32 MB memory). In case it’s not clear: when given this information class but no information buffer, the function succeeds! If the buffer is too small even for the formally defined structure, with its capacity for describing one stack, the function sets the return length to the size of the formal

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