Win7 x64 Vad遍历模块

Posted 2022-11-25 zhuhuibeishadiao

先看下NtQueryVirtualMenmory代码

刚开始只是判断下buff是否符合要求

然后去GS寄存器获取东西,但发现偏移过去是context,这就无从而知了.

然后去得到EPROCESS 这里判断是不是系统进程和buff是否符合要求

如果是查询MemoryBasicInformation信息就填充一些信息,本篇文章主要是看  MemorySectionName功能(2)

如果是查询MemoryWorkingSetList和1号功能就调用MiGetWorkingSetInfo或者MiGetWorkingSetInfoList

如果都不是1 4 那就是2好功能MemorySectionName

先判断是不是系统进程 如果不是就KeStackAttachProcess上去

然后获取锁锁住进程

然后判断如果进程flags是否包含0x20 （VmDeleted ）,是就取消附加 解锁 返回0xC000010A

如果进程flags(VmDeleted  )是1就去遍历平衡二叉树

VadRoot +5 是u成员,不知道是东西,应该跟初始化状态有关,因为如果是新创建的进程,这个u+5是0,然后过一会就会有值.

期间判断偏移是否超过正在枚举的模块的大小

得到节点后就去获取FILE_OBJECT 上面标签写错了 

可以看到是路径是MMVAD->Subsection->ControlArea->FilePointer.Value 去除后3位

然后调用下面2个其中一个函数去锁住这个对象

如果获取到FileObject 且不是3号功能 

就调用ObpQueryNameString查询文件名

由此 看了之后Windbg看来下

随便选择一个进程

1: kd> dt _eprocess 0xfffffa801b104b30
nt!_EPROCESS
   +0x000 Pcb              : _KPROCESS
   +0x160 ProcessLock      : _EX_PUSH_LOCK
   +0x168 CreateTime       : _LARGE_INTEGER 0x01d24a6b`f7e332ad
   +0x170 ExitTime         : _LARGE_INTEGER 0x0
   +0x178 RundownProtect   : _EX_RUNDOWN_REF
   +0x180 UniqueProcessId  : 0x00000000`00000168 Void
   +0x188 ActiveProcessLinks : _LIST_ENTRY [ 0xfffffa80`1ab5dcb8 - 0xfffffa80`1b0adcb8 ]
   +0x198 ProcessQuotaUsage : [2] 0x3858
   +0x1a8 ProcessQuotaPeak : [2] 0x13068
   +0x1b8 CommitCharge     : 0x49d
   +0x1c0 QuotaBlock       : 0xfffffa80`1aa2e840 _EPROCESS_QUOTA_BLOCK
   +0x1c8 CpuQuotaBlock    : (null) 
   +0x1d0 PeakVirtualSize  : 0x5fc5000
   +0x1d8 VirtualSize      : 0x3fa2000
   +0x1e0 SessionProcessLinks : _LIST_ENTRY [ 0xfffffa80`1ab84d10 - 0xfffffa80`1b0add10 ]
   +0x1f0 DebugPort        : (null) 
   +0x1f8 ExceptionPortData : 0xfffffa80`1a524e60 Void
   +0x1f8 ExceptionPortValue : 0xfffffa80`1a524e60
   +0x1f8 ExceptionPortState : 0y000
   +0x200 ObjectTable      : 0xfffff8a0`01b11ab0 _HANDLE_TABLE
   +0x208 Token            : _EX_FAST_REF
   +0x210 WorkingSetPage   : 0x784c2
   +0x218 AddressCreationLock : _EX_PUSH_LOCK
   +0x220 RotateInProgress : (null) 
   +0x228 ForkInProgress   : (null) 
   +0x230 HardwareTrigger  : 0
   +0x238 PhysicalVadRoot  : (null) 
   +0x240 CloneRoot        : (null) 
   +0x248 NumberOfPrivatePages : 0x35d
   +0x250 NumberOfLockedPages : 0
   +0x258 Win32Process     : 0xfffff900`c1e42ce0 Void
   +0x260 Job              : (null) 
   +0x268 SectionObject    : 0xfffff8a0`01b1fab0 Void
   +0x270 SectionBaseAddress : 0x00000000`ff830000 Void
   +0x278 Cookie           : 0x87a6caf0
   +0x27c UmsScheduledThreads : 0
   +0x280 WorkingSetWatch  : (null) 
   +0x288 Win32WindowStation : 0x00000000`00000134 Void
   +0x290 InheritedFromUniqueProcessId : 0x00000000`0000022c Void
   +0x298 LdtInformation   : (null) 
   +0x2a0 Spare            : (null) 
   +0x2a8 ConsoleHostProcess : 0
   +0x2b0 DeviceMap        : 0xfffff8a0`00d8ca10 Void
   +0x2b8 EtwDataSource    : 0xfffffa80`1ad8e290 Void
   +0x2c0 FreeTebHint      : 0x000007ff`fffdc000 Void
   +0x2c8 FreeUmsTebHint   : 0x00000001`00000000 Void
   +0x2d0 PageDirectoryPte : _HARDWARE_PTE
   +0x2d0 Filler           : 0
   +0x2d8 Session          : 0xfffff880`04630000 Void
   +0x2e0 ImageFileName    : [15]  "svchost.exe"
   +0x2ef PriorityClass    : 0x2 ''
   +0x2f0 JobLinks         : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
   +0x300 LockedPagesList  : (null) 
   +0x308 ThreadListHead   : _LIST_ENTRY [ 0xfffffa80`1b158a60 - 0xfffffa80`19704480 ]
   +0x318 SecurityPort     : (null) 
   +0x320 Wow64Process     : (null) 
   +0x328 ActiveThreads    : 4
   +0x32c ImagePathHash    : 0xf5dbefc5
   +0x330 DefaultHardErrorProcessing : 0
   +0x334 LastThreadExitStatus : 0n0
   +0x338 Peb              : 0x000007ff`fffd7000 _PEB
   +0x340 PrefetchTrace    : _EX_FAST_REF
   +0x348 ReadOperationCount : _LARGE_INTEGER 0x23
   +0x350 WriteOperationCount : _LARGE_INTEGER 0x44
   +0x358 OtherOperationCount : _LARGE_INTEGER 0x1fd4
   +0x360 ReadTransferCount : _LARGE_INTEGER 0xa6d6a
   +0x368 WriteTransferCount : _LARGE_INTEGER 0x381e4
   +0x370 OtherTransferCount : _LARGE_INTEGER 0x45269
   +0x378 CommitChargeLimit : 0
   +0x380 CommitChargePeak : 0x918
   +0x388 AweInfo          : (null) 
   +0x390 SeAuditProcessCreationInfo : _SE_AUDIT_PROCESS_CREATION_INFO
   +0x398 Vm               : _MMSUPPORT
   +0x420 MmProcessLinks   : _LIST_ENTRY [ 0xfffffa80`1ab5df50 - 0xfffffa80`1b0adf50 ]
   +0x430 HighestUserAddress : 0x000007ff`ffff0000 Void
   +0x438 ModifiedPageCount : 0xbf
   +0x43c Flags2           : 0xd000
   +0x43c JobNotReallyActive : 0y0
   +0x43c AccountingFolded : 0y0
   +0x43c NewProcessReported : 0y0
   +0x43c ExitProcessReported : 0y0
   +0x43c ReportCommitChanges : 0y0
   +0x43c LastReportMemory : 0y0
   +0x43c ReportPhysicalPageChanges : 0y0
   +0x43c HandleTableRundown : 0y0
   +0x43c NeedsHandleRundown : 0y0
   +0x43c RefTraceEnabled  : 0y0
   +0x43c NumaAware        : 0y0
   +0x43c ProtectedProcess : 0y0
   +0x43c DefaultPagePriority : 0y101
   +0x43c PrimaryTokenFrozen : 0y1
   +0x43c ProcessVerifierTarget : 0y0
   +0x43c StackRandomizationDisabled : 0y0
   +0x43c AffinityPermanent : 0y0
   +0x43c AffinityUpdateEnable : 0y0
   +0x43c PropagateNode    : 0y0
   +0x43c ExplicitAffinity : 0y0
   +0x440 Flags            : 0x144d0801
   +0x440 CreateReported   : 0y1
   +0x440 NoDebugInherit   : 0y0
   +0x440 ProcessExiting   : 0y0
   +0x440 ProcessDelete    : 0y0
   +0x440 Wow64SplitPages  : 0y0
   +0x440 VmDeleted        : 0y0
   +0x440 OutswapEnabled   : 0y0
   +0x440 Outswapped       : 0y0
   +0x440 ForkFailed       : 0y0
   +0x440 Wow64VaSpace4Gb  : 0y0
   +0x440 AddressSpaceInitialized : 0y10
   +0x440 SetTimerResolution : 0y0
   +0x440 BreakOnTermination : 0y0
   +0x440 DeprioritizeViews : 0y0
   +0x440 WriteWatch       : 0y0
   +0x440 ProcessInSession : 0y1
   +0x440 OverrideAddressSpace : 0y0
   +0x440 HasAddressSpace  : 0y1
   +0x440 LaunchPrefetched : 0y1
   +0x440 InjectInpageErrors : 0y0
   +0x440 VmTopDown        : 0y0
   +0x440 ImageNotifyDone  : 0y1
   +0x440 PdeUpdateNeeded  : 0y0
   +0x440 VdmAllowed       : 0y0
   +0x440 CrossSessionCreate : 0y0
   +0x440 ProcessInserted  : 0y1
   +0x440 DefaultIoPriority : 0y010
   +0x440 ProcessSelfDelete : 0y0
   +0x440 SetTimerResolutionLink : 0y0
   +0x444 ExitStatus       : 0n259
   +0x448 VadRoot          : _MM_AVL_TABLE
   +0x488 AlpcContext      : _ALPC_PROCESS_CONTEXT
   +0x4a8 TimerResolutionLink : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
   +0x4b8 RequestedTimerResolution : 0
   +0x4bc ActiveThreadsHighWatermark : 0xc
   +0x4c0 SmallestTimerResolution : 0
   +0x4c8 TimerResolutionStackRecord : (null) 
eprocess+0x448 VadRoot
1: kd> dt _MM_AVL_TABLE 0xfffffa801b104b30+0x448
nt!_MM_AVL_TABLE
   +0x000 BalancedRoot     : _MMADDRESS_NODE
   +0x028 DepthOfTree      : 0y01000 (0x8)
   +0x028 Unused           : 0y000
   +0x028 NumberGenericTableElements : 0y00000000000000000000000000000000000000000000000001110000 (0x70)
   +0x030 NodeHint         : 0xfffffa80`1b158e20 Void
   +0x038 NodeFreeHint     : (null) 
eprocess->VadRoot->BlanceRoot 有一个右节点
1: kd> dt _MMADDRESS_NODE 0xfffffa801b104b30+0x448
nt!_MMADDRESS_NODE
   +0x000 u1               : <unnamed-tag>
   +0x008 LeftChild        : (null) 
   +0x010 RightChild       : 0xfffffa80`1b158e20 _MMADDRESS_NODE
   +0x018 StartingVpn      : 0
   +0x020 EndingVpn        : 0

看下这个节点
1: kd> dt _MMVAD 0xfffffa80`1b158e20
nt!_MMVAD
   +0x000 u1               : <unnamed-tag>
   +0x008 LeftChild        : 0xfffffa80`1b167680 _MMVAD
   +0x010 RightChild       : 0xfffffa80`1b157da0 _MMVAD
   +0x018 StartingVpn      : 0x7ffe0
   +0x020 EndingVpn        : 0x7ffef
   +0x028 u                : <unnamed-tag>
   +0x030 PushLock         : _EX_PUSH_LOCK
   +0x038 u5               : <unnamed-tag>
   +0x040 u2               : <unnamed-tag>
   +0x048 Subsection       : (null) 
   +0x048 MappedSubsection : (null) 
   +0x050 FirstPrototypePte : (null) 
   +0x058 LastContiguousPte : (null) 
   +0x060 ViewLinks        : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
   +0x070 VadsProcess      : (null) 
VadsProcess 是空的 说明这个不是正确的 继续看下一个右节点 VadsProcess是一个有效值 说明是一个模块
1: kd> dt 0xfffffa80`1b157da0 _MMVAD
nt!_MMVAD
   +0x000 u1               : <unnamed-tag>
   +0x008 LeftChild        : 0xfffffa80`1b15ada0 _MMVAD
   +0x010 RightChild       : 0xfffffa80`1b163ad0 _MMVAD
   +0x018 StartingVpn      : 0x7fefdac0
   +0x020 EndingVpn        : 0x7fefdb2a
   +0x028 u                : <unnamed-tag>
   +0x030 PushLock         : _EX_PUSH_LOCK
   +0x038 u5               : <unnamed-tag>
   +0x040 u2               : <unnamed-tag>
   +0x048 Subsection       : 0xfffffa80`19c1e330 _SUBSECTION
   +0x048 MappedSubsection : 0xfffffa80`19c1e330 _MSUBSECTION
   +0x050 FirstPrototypePte : 0xfffff8a0`004b9948 _MMPTE
   +0x058 LastContiguousPte : 0xffffffff`fffffffc _MMPTE
   +0x060 ViewLinks        : _LIST_ENTRY [ 0xfffffa80`1b0db920 - 0xfffffa80`1b2dd450 ]
   +0x070 VadsProcess      : 0xfffffa80`1b104b31 _EPROCESS
看一下Subsection
1: kd> dt 0xfffffa80`19c1e330 _SUBSECTION
nt!_SUBSECTION
   +0x000 ControlArea      : 0xfffffa80`19c1e2b0 _CONTROL_AREA
   +0x008 SubsectionBase   : 0xfffff8a0`004b9948 _MMPTE
   +0x010 NextSubsection   : 0xfffffa80`19c1e368 _SUBSECTION
   +0x018 PtesInSubsection : 1
   +0x020 UnusedPtes       : 0
   +0x020 GlobalPerSessionHead : (null) 
   +0x028 u                : <unnamed-tag>
   +0x02c StartingSector   : 0
   +0x030 NumberOfFullSectors : 2
再看下ControlArea
1: kd> dt 0xfffffa80`19c1e2b0 _CONTROL_AREA
nt!_CONTROL_AREA
   +0x000 Segment          : 0xfffff8a0`004b9900 _SEGMENT
   +0x008 DereferenceList  : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
   +0x018 NumberOfSectionReferences : 1
   +0x020 NumberOfPfnReferences : 0x69
   +0x028 NumberOfMappedViews : 0x23
   +0x030 NumberOfUserReferences : 0x24
   +0x038 u                : <unnamed-tag>
   +0x03c FlushInProgressCount : 0
   +0x040 FilePointer      : _EX_FAST_REF
   +0x048 ControlAreaLock  : 0n0
   +0x04c ModifiedWriteCount : 0
   +0x04c StartingFrame    : 0
   +0x050 WaitingForDeletion : (null) 
   +0x058 u2               : <unnamed-tag>
   +0x068 LockedPages      : 0n1
   +0x070 ViewList         : _LIST_ENTRY [ 0xfffffa80`1a93e420 - 0xfffffa80`1a31f5f0 ]
再看FilePointer
1: kd> dt _EX_FAST_REF 0xfffffa80`19c1e2b0+0x40
nt!_EX_FAST_REF
   +0x000 Object           : 0xfffffa80`19c1df27 Void
   +0x000 RefCnt           : 0y0111
   +0x000 Value            : 0xfffffa80`19c1df27
去除低4位就是真正的FileObject,这里就可以看到模块名了
1: kd> dt _file_object 0xfffffa80`19c1df20
nt!_FILE_OBJECT
   +0x000 Type             : 0n5
   +0x002 Size             : 0n216
   +0x008 DeviceObject     : 0xfffffa80`192df480 _DEVICE_OBJECT
   +0x010 Vpb              : 0xfffffa80`192dd2b0 _VPB
   +0x018 FsContext        : 0xfffff8a0`04008890 Void
   +0x020 FsContext2       : 0xfffff8a0`04008a80 Void
   +0x028 SectionObjectPointer : 0xfffffa80`19c1de18 _SECTION_OBJECT_POINTERS
   +0x030 PrivateCacheMap  : (null) 
   +0x038 FinalStatus      : 0n0
   +0x040 RelatedFileObject : 0xfffffa80`193fc930 _FILE_OBJECT
   +0x048 LockOperation    : 0 ''
   +0x049 DeletePending    : 0 ''
   +0x04a ReadAccess       : 0x1 ''
   +0x04b WriteAccess      : 0 ''
   +0x04c DeleteAccess     : 0 ''
   +0x04d SharedRead       : 0x1 ''
   +0x04e SharedWrite      : 0 ''
   +0x04f SharedDelete     : 0x1 ''
   +0x050 Flags            : 0x44042
   +0x058 FileName         : _UNICODE_STRING "\\Windows\\System32\\KernelBase.dll"
   +0x068 CurrentByteOffset : _LARGE_INTEGER 0x0
   +0x070 Waiters          : 0
   +0x074 Busy             : 0
   +0x078 LastLock         : (null) 
   +0x080 Lock             : _KEVENT
   +0x098 Event            : _KEVENT
   +0x0b0 CompletionContext : (null) 
   +0x0b8 IrpListLock      : 0
   +0x0c0 IrpList          : _LIST_ENTRY [ 0xfffffa80`19c1dfe0 - 0xfffffa80`19c1dfe0 ]
   +0x0d0 FileObjectExtension : (null) 
在下Segment,有基址 如果要隐藏的话这个地方要置0
1: kd> dt 0xfffff8a0`004b9900 _SEGMENT
nt!_SEGMENT
   +0x000 ControlArea      : 0xfffffa80`19c1e2b0 _CONTROL_AREA
   +0x008 TotalNumberOfPtes : 0x6b
   +0x00c SegmentFlags     : _SEGMENT_FLAGS
   +0x010 NumberOfCommittedPages : 0
   +0x018 SizeOfSegment    : 0x6b000
   +0x020 ExtendInfo       : 0x000007fe`fdac0000 _MMEXTEND_INFO
   +0x020 BasedAddress     : 0x000007fe`fdac0000 Void
   +0x028 SegmentLock      : _EX_PUSH_LOCK
   +0x030 u1               : <unnamed-tag>
   +0x038 u2               : <unnamed-tag>
   +0x040 PrototypePte     : 0xfffff8a0`004b9948 _MMPTE
   +0x048 ThePtes          : [1] _MMPTE

代码就很简单了 ,就是遍历二叉树.自己写去吧