Peb小结
# 前言
每个进程都会有自己独立的4GB的内存空间
# 本质
当进程中的线程执行代码时，能访问的内容，是由进程决定的
任何进程，在0环都会有一个结构体，EPROCESS
`OpenProcess()`...
0x00 前言
每个进程都会有自己独立的4GB的内存空间
0x01 本质
当进程中的线程执行代码时，能访问的内容，是由进程决定的
任何进程，在0环都会有一个结构体，EPROCESS
OpenProcess()函数的本质：是拿到0环结构体EPROCESS的句柄
0x02 配置符号路径
使用Windbg，正确配置符号路径
参考：https://docs.microsoft.com/zh-cn/windows/win32/dxtecharts/debugging-with-symbols?redirectedfrom=MSDN
path变量
Windbg访问符号须要两个文件(SYMSRV.DLL 和 SYMSTORE.EXE)
因此 添加上面这两个文件存在的目录 到path环境变量
我使用的是微软商店安装的Windbg Preview，它的默认路径
C:\Program Files (x86)\Windows Kits\10\Debuggers\x64
_NT_SYMBOL_PATH变量
在创建一个变量
变量名:_NT_SYMBOL_PATH
变量值:SRVc:\localsymbolshttp://msdl.microsoft.com/download/symbols
0x03 进程结构体(EPROCESS)
整体结构
采用附加进程的方式去Windbg
打开notepad.exe，在Windbg中
File -> Attach to a Process -> notepad.exe
查看EPROCESS结构体
dt nt!_eprocess
0:010> dt nt!_eprocess
ntdll!_EPROCESS
+0x000 Pcb : _KPROCESS
+0x438 ProcessLock : _EX_PUSH_LOCK
+0x440 UniqueProcessId : Ptr64 Void
+0x448 ActiveProcessLinks : _LIST_ENTRY
+0x458 RundownProtect : _EX_RUNDOWN_REF
+0x460 Flags2 : Uint4B
+0x460 JobNotReallyActive : Pos 0, 1 Bit
+0x460 AccountingFolded : Pos 1, 1 Bit
+0x460 NewProcessReported : Pos 2, 1 Bit
+0x460 ExitProcessReported : Pos 3, 1 Bit
+0x460 ReportCommitChanges : Pos 4, 1 Bit
+0x460 LastReportMemory : Pos 5, 1 Bit
+0x460 ForceWakeCharge : Pos 6, 1 Bit
+0x460 CrossSessionCreate : Pos 7, 1 Bit
+0x460 NeedsHandleRundown : Pos 8, 1 Bit
+0x460 RefTraceEnabled : Pos 9, 1 Bit
+0x460 PicoCreated : Pos 10, 1 Bit
+0x460 EmptyJobEvaluated : Pos 11, 1 Bit
+0x460 DefaultPagePriority : Pos 12, 3 Bits
+0x460 PrimaryTokenFrozen : Pos 15, 1 Bit
+0x460 ProcessVerifierTarget : Pos 16, 1 Bit
+0x460 RestrictSetThreadContext : Pos 17, 1 Bit
+0x460 AffinityPermanent : Pos 18, 1 Bit
+0x460 AffinityUpdateEnable : Pos 19, 1 Bit
+0x460 PropagateNode : Pos 20, 1 Bit
+0x460 ExplicitAffinity : Pos 21, 1 Bit
+0x460 ProcessExecutionState : Pos 22, 2 Bits
+0x460 EnableReadVmLogging : Pos 24, 1 Bit
+0x460 EnableWriteVmLogging : Pos 25, 1 Bit
+0x460 FatalAccessTerminationRequested : Pos 26, 1 Bit
+0x460 DisableSystemAllowedCpuSet : Pos 27, 1 Bit
+0x460 ProcessStateChangeRequest : Pos 28, 2 Bits
+0x460 ProcessStateChangeInProgress : Pos 30, 1 Bit
+0x460 InPrivate : Pos 31, 1 Bit
+0x464 Flags : Uint4B
+0x464 CreateReported : Pos 0, 1 Bit
+0x464 NoDebugInherit : Pos 1, 1 Bit
+0x464 ProcessExiting : Pos 2, 1 Bit
+0x464 ProcessDelete : Pos 3, 1 Bit
+0x464 ManageExecutableMemoryWrites : Pos 4, 1 Bit
+0x464 VmDeleted : Pos 5, 1 Bit
+0x464 OutswapEnabled : Pos 6, 1 Bit
+0x464 Outswapped : Pos 7, 1 Bit
+0x464 FailFastOnCommitFail : Pos 8, 1 Bit
+0x464 Wow64VaSpace4Gb : Pos 9, 1 Bit
+0x464 AddressSpaceInitialized : Pos 10, 2 Bits
+0x464 SetTimerResolution : Pos 12, 1 Bit
+0x464 BreakOnTermination : Pos 13, 1 Bit
+0x464 DeprioritizeViews : Pos 14, 1 Bit
+0x464 WriteWatch : Pos 15, 1 Bit
+0x464 ProcessInSession : Pos 16, 1 Bit
+0x464 OverrideAddressSpace : Pos 17, 1 Bit
+0x464 HasAddressSpace : Pos 18, 1 Bit
+0x464 LaunchPrefetched : Pos 19, 1 Bit
+0x464 Background : Pos 20, 1 Bit
+0x464 VmTopDown : Pos 21, 1 Bit
+0x464 ImageNotifyDone : Pos 22, 1 Bit
+0x464 PdeUpdateNeeded : Pos 23, 1 Bit
+0x464 VdmAllowed : Pos 24, 1 Bit
+0x464 ProcessRundown : Pos 25, 1 Bit
+0x464 ProcessInserted : Pos 26, 1 Bit
+0x464 DefaultIoPriority : Pos 27, 3 Bits
+0x464 ProcessSelfDelete : Pos 30, 1 Bit
+0x464 SetTimerResolutionLink : Pos 31, 1 Bit
+0x468 CreateTime : _LARGE_INTEGER
+0x470 ProcessQuotaUsage : [2] Uint8B
+0x480 ProcessQuotaPeak : [2] Uint8B
+0x490 PeakVirtualSize : Uint8B
+0x498 VirtualSize : Uint8B
+0x4a0 SessionProcessLinks : _LIST_ENTRY
+0x4b0 ExceptionPortData : Ptr64 Void
+0x4b0 ExceptionPortValue : Uint8B
+0x4b0 ExceptionPortState : Pos 0, 3 Bits
+0x4b8 Token : _EX_FAST_REF
+0x4c0 MmReserved : Uint8B
+0x4c8 AddressCreationLock : _EX_PUSH_LOCK
+0x4d0 PageTableCommitmentLock : _EX_PUSH_LOCK
+0x4d8 RotateInProgress : Ptr64 _ETHREAD
+0x4e0 ForkInProgress : Ptr64 _ETHREAD
+0x4e8 CommitChargeJob : Ptr64 _EJOB
+0x4f0 CloneRoot : _RTL_AVL_TREE
+0x4f8 NumberOfPrivatePages : Uint8B
+0x500 NumberOfLockedPages : Uint8B
+0x508 Win32Process : Ptr64 Void
+0x510 Job : Ptr64 _EJOB
+0x518 SectionObject : Ptr64 Void
+0x520 SectionBaseAddress : Ptr64 Void
+0x528 Cookie : Uint4B
+0x530 WorkingSetWatch : Ptr64 _PAGEFAULT_HISTORY
+0x538 Win32WindowStation : Ptr64 Void
+0x540 InheritedFromUniqueProcessId : Ptr64 Void
+0x548 OwnerProcessId : Uint8B
+0x550 Peb : Ptr64 _PEB
+0x558 Session : Ptr64 _MM_SESSION_SPACE
+0x560 Spare1 : Ptr64 Void
+0x568 QuotaBlock : Ptr64 _EPROCESS_QUOTA_BLOCK
+0x570 ObjectTable : Ptr64 _HANDLE_TABLE
+0x578 DebugPort : Ptr64 Void
+0x580 WoW64Process : Ptr64 _EWOW64PROCESS
+0x588 DeviceMap : Ptr64 Void
+0x590 EtwDataSource : Ptr64 Void
+0x598 PageDirectoryPte : Uint8B
+0x5a0 ImageFilePointer : Ptr64 _FILE_OBJECT
+0x5a8 ImageFileName : [15] UChar
+0x5b7 PriorityClass : UChar
+0x5b8 SecurityPort : Ptr64 Void
+0x5c0 SeAuditProcessCreationInfo : _SE_AUDIT_PROCESS_CREATION_INFO
+0x5c8 JobLinks : _LIST_ENTRY
+0x5d8 HighestUserAddress : Ptr64 Void
+0x5e0 ThreadListHead : _LIST_ENTRY
+0x5f0 ActiveThreads : Uint4B
+0x5f4 ImagePathHash : Uint4B
+0x5f8 DefaultHardErrorProcessing : Uint4B
+0x5fc LastThreadExitStatus : Int4B
+0x600 PrefetchTrace : _EX_FAST_REF
+0x608 LockedPagesList : Ptr64 Void
+0x610 ReadOperationCount : _LARGE_INTEGER
+0x618 WriteOperationCount : _LARGE_INTEGER
+0x620 OtherOperationCount : _LARGE_INTEGER
+0x628 ReadTransferCount : _LARGE_INTEGER
+0x630 WriteTransferCount : _LARGE_INTEGER
+0x638 OtherTransferCount : _LARGE_INTEGER
+0x640 CommitChargeLimit : Uint8B
+0x648 CommitCharge : Uint8B
+0x650 CommitChargePeak : Uint8B
+0x680 Vm : _MMSUPPORT_FULL
+0x7c0 MmProcessLinks : _LIST_ENTRY
+0x7d0 ModifiedPageCount : Uint4B
+0x7d4 ExitStatus : Int4B
+0x7d8 VadRoot : _RTL_AVL_TREE
+0x7e0 VadHint : Ptr64 Void
+0x7e8 VadCount : Uint8B
+0x7f0 VadPhysicalPages : Uint8B
+0x7f8 VadPhysicalPagesLimit : Uint8B
+0x800 AlpcContext : _ALPC_PROCESS_CONTEXT
+0x820 TimerResolutionLink : _LIST_ENTRY
+0x830 TimerResolutionStackRecord : Ptr64 _PO_DIAG_STACK_RECORD
+0x838 RequestedTimerResolution : Uint4B
+0x83c SmallestTimerResolution : Uint4B
+0x840 ExitTime : _LARGE_INTEGER
+0x848 InvertedFunctionTable : Ptr64 _INVERTED_FUNCTION_TABLE
+0x850 InvertedFunctionTableLock : _EX_PUSH_LOCK
+0x858 ActiveThreadsHighWatermark : Uint4B
+0x85c LargePrivateVadCount : Uint4B
+0x860 ThreadListLock : _EX_PUSH_LOCK
+0x868 WnfContext : Ptr64 Void
+0x870 ServerSilo : Ptr64 _EJOB
+0x878 SignatureLevel : UChar
+0x879 SectionSignatureLevel : UChar
+0x87a Protection : _PS_PROTECTION
+0x87b HangCount : Pos 0, 3 Bits
+0x87b GhostCount : Pos 3, 3 Bits
+0x87b PrefilterException : Pos 6, 1 Bit
+0x87c Flags3 : Uint4B
+0x87c Minimal : Pos 0, 1 Bit
+0x87c ReplacingPageRoot : Pos 1, 1 Bit
+0x87c Crashed : Pos 2, 1 Bit
+0x87c JobVadsAreTracked : Pos 3, 1 Bit
+0x87c VadTrackingDisabled : Pos 4, 1 Bit
+0x87c AuxiliaryProcess : Pos 5, 1 Bit
+0x87c SubsystemProcess : Pos 6, 1 Bit
+0x87c IndirectCpuSets : Pos 7, 1 Bit
+0x87c RelinquishedCommit : Pos 8, 1 Bit
+0x87c HighGraphicsPriority : Pos 9, 1 Bit
+0x87c CommitFailLogged : Pos 10, 1 Bit
+0x87c ReserveFailLogged : Pos 11, 1 Bit
+0x87c SystemProcess : Pos 12, 1 Bit
+0x87c HideImageBaseAddresses : Pos 13, 1 Bit
+0x87c AddressPolicyFrozen : Pos 14, 1 Bit
+0x87c ProcessFirstResume : Pos 15, 1 Bit
+0x87c ForegroundExternal : Pos 16, 1 Bit
+0x87c ForegroundSystem : Pos 17, 1 Bit
+0x87c HighMemoryPriority : Pos 18, 1 Bit
+0x87c EnableProcessSuspendResumeLogging : Pos 19, 1 Bit
+0x87c EnableThreadSuspendResumeLogging : Pos 20, 1 Bit
+0x87c SecurityDomainChanged : Pos 21, 1 Bit
+0x87c SecurityFreezeComplete : Pos 22, 1 Bit
+0x87c VmProcessorHost : Pos 23, 1 Bit
+0x87c VmProcessorHostTransition : Pos 24, 1 Bit
+0x87c AltSyscall : Pos 25, 1 Bit
+0x87c TimerResolutionIgnore : Pos 26, 1 Bit
+0x87c DisallowUserTerminate : Pos 27, 1 Bit
+0x880 DeviceAsid : Int4B
+0x888 SvmData : Ptr64 Void
+0x890 SvmProcessLock : _EX_PUSH_LOCK
+0x898 SvmLock : Uint8B
+0x8a0 SvmProcessDeviceListHead : _LIST_ENTRY
+0x8b0 LastFreezeInterruptTime : Uint8B
+0x8b8 DiskCounters : Ptr64 _PROCESS_DISK_COUNTERS
+0x8c0 PicoContext : Ptr64 Void
+0x8c8 EnclaveTable : Ptr64 Void
+0x8d0 EnclaveNumber : Uint8B
+0x8d8 EnclaveLock : _EX_PUSH_LOCK
+0x8e0 HighPriorityFaultsAllowed : Uint4B
+0x8e8 EnergyContext : Ptr64 _PO_PROCESS_ENERGY_CONTEXT
+0x8f0 VmContext : Ptr64 Void
+0x8f8 SequenceNumber : Uint8B
+0x900 CreateInterruptTime : Uint8B
+0x908 CreateUnbiasedInterruptTime : Uint8B
+0x910 TotalUnbiasedFrozenTime : Uint8B
+0x918 LastAppStateUpdateTime : Uint8B
+0x920 LastAppStateUptime : Pos 0, 61 Bits
+0x920 LastAppState : Pos 61, 3 Bits
+0x928 SharedCommitCharge : Uint8B
+0x930 SharedCommitLock : _EX_PUSH_LOCK
+0x938 SharedCommitLinks : _LIST_ENTRY
+0x948 AllowedCpuSets : Uint8B
+0x950 DefaultCpuSets : Uint8B
+0x948 AllowedCpuSetsIndirect : Ptr64 Uint8B
+0x950 DefaultCpuSetsIndirect : Ptr64 Uint8B
+0x958 DiskIoAttribution : Ptr64 Void
+0x960 DxgProcess : Ptr64 Void
+0x968 Win32KFilterSet : Uint4B
+0x970 ProcessTimerDelay : _PS_INTERLOCKED_TIMER_DELAY_VALUES
+0x978 KTimerSets : Uint4B
+0x97c KTimer2Sets : Uint4B
+0x980 ThreadTimerSets : Uint4B
+0x988 VirtualTimerListLock : Uint8B
+0x990 VirtualTimerListHead : _LIST_ENTRY
+0x9a0 WakeChannel : _WNF_STATE_NAME
+0x9a0 WakeInfo : _PS_PROCESS_WAKE_INFORMATION
+0x9d0 MitigationFlags : Uint4B
+0x9d0 MitigationFlagsValues :
+0x9d4 MitigationFlags2 : Uint4B
+0x9d4 MitigationFlags2Values :
+0x9d8 PartitionObject : Ptr64 Void
+0x9e0 SecurityDomain : Uint8B
+0x9e8 ParentSecurityDomain : Uint8B
+0x9f0 CoverageSamplerContext : Ptr64 Void
+0x9f8 MmHotPatchContext : Ptr64 Void
+0xa00 DynamicEHContinuationTargetsTree : _RTL_AVL_TREE
+0xa08 DynamicEHContinuationTargetsLock : _EX_PUSH_LOCK
+0xa10 DynamicEnforcedCetCompatibleRanges : _PS_DYNAMIC_ENFORCED_ADDRESS_RANGES
+0xa20 DisabledComponentFlags : Uint4B
+0xa28 PathRedirectionHashes : Ptr64 Uint4B
KPROCESS(主要成员)
它是进程结构体EPROCESS的主要成员，它是一个结构体，进一步查看
0:010> dt nt!_KPROCESS
ntdll!_KPROCESS
+0x000 Header : _DISPATCHER_HEADER
+0x018 ProfileListHead : _LIST_ENTRY
+0x028 DirectoryTableBase : Uint8B
+0x030 ThreadListHead : _LIST_ENTRY
+0x040 ProcessLock : Uint4B
+0x044 ProcessTimerDelay : Uint4B
+0x048 DeepFreezeStartTime : Uint8B
+0x050 Affinity : _KAFFINITY_EX
+0x0f8 AffinityPadding : [12] Uint8B
+0x158 ReadyListHead : _LIST_ENTRY
+0x168 SwapListEntry : _SINGLE_LIST_ENTRY
+0x170 ActiveProcessors : _KAFFINITY_EX
+0x218 ActiveProcessorsPadding : [12] Uint8B
+0x278 AutoAlignment : Pos 0, 1 Bit
+0x278 DisableBoost : Pos 1, 1 Bit
+0x278 DisableQuantum : Pos 2, 1 Bit
+0x278 DeepFreeze : Pos 3, 1 Bit
+0x278 TimerVirtualization : Pos 4, 1 Bit
+0x278 CheckStackExtents : Pos 5, 1 Bit
+0x278 CacheIsolationEnabled : Pos 6, 1 Bit
+0x278 PpmPolicy : Pos 7, 3 Bits
+0x278 VaSpaceDeleted : Pos 10, 1 Bit
+0x278 ReservedFlags : Pos 11, 21 Bits
+0x278 ProcessFlags : Int4B
+0x27c ActiveGroupsMask : Uint4B
+0x280 BasePriority : Char
+0x281 QuantumReset : Char
+0x282 Visited : Char
+0x283 Flags : _KEXECUTE_OPTIONS
+0x284 ThreadSeed : [20] Uint2B
+0x2ac ThreadSeedPadding : [12] Uint2B
+0x2c4 IdealProcessor : [20] Uint2B
+0x2ec IdealProcessorPadding : [12] Uint2B
+0x304 IdealNode : [20] Uint2B
+0x32c IdealNodePadding : [12] Uint2B
+0x344 IdealGlobalNode : Uint2B
+0x346 Spare1 : Uint2B
+0x348 StackCount : _KSTACK_COUNT
+0x350 ProcessListEntry : _LIST_ENTRY
+0x360 CycleTime : Uint8B
+0x368 ContextSwitches : Uint8B
+0x370 SchedulingGroup : Ptr64 _KSCHEDULING_GROUP
+0x378 FreezeCount : Uint4B
+0x37c KernelTime : Uint4B
+0x380 UserTime : Uint4B
+0x384 ReadyTime : Uint4B
+0x388 UserDirectoryTableBase : Uint8B
+0x390 AddressPolicy : UChar
+0x391 Spare2 : [71] UChar
+0x3d8 InstrumentationCallback : Ptr64 Void
+0x3e0 SecureState :
+0x3e8 KernelWaitTime : Uint8B
+0x3f0 UserWaitTime : Uint8B
+0x3f8 EndPadding : [8] Uint8B
继续看参数
继续看参数
1、
+0x000 Header : _DISPATCHER_HEADER
只要我们的结构体中包含_DISPATCHER_HEADER，就可以成为被等待对象
2、
+0x028 DirectoryTableBase : Uint8B
它是页目录表的基址，也就是cr3
1个内核，只有一个cr3，但是可以跑10个进程：
10个进程，每个进程保存自己的进程结构体EPROCESS
每个进程都保存着自己的cr3：+0x018 DirectoryTableBase : [2] Uint4B
A进程执行的时候，就把它A进程的cr3放到内核中的cr3寄存器中
B进程执行的时候，就把它B进程的cr3放到内核中的cr3寄存器中
A进程：x、y、z三个线程，三个线程使用同一个cr3，就是进程A的cr3
B进程：m、n两个线程，两个线程使用同一个cr3，就是进程B的cr3
线程切换，cr3可能并不会切换，比如x切换到y，因为他们都使用进程A的cr3
进程切换，比如x切换到m，x使用进程A的cr3，m使用进程B的cr3，所以需要切换cr3
两个进程之间的线程切换，cr3才会切换
3、
+0x37c KernelTime : Uint4B
+0x380 UserTime : Uint4B
统计信息 记录了一个进程在内核模式/用户模式下所花的时间
4、
+0x050 Affinity : _KAFFINITY_EX
规定进程里面的所有线程能在哪个CPU上跑
看哪一位为1，倒着走，分别是0号CPU、1号CPU、2号CPU、3号CPU...
如果值为1，转换成二进制00000001，那这个进程的所以线程只能在0号CPU上跑(00000001)--->看哪一位为1
如果值为3，转换成二进制000000011，那这个进程的所以线程能在0、1号CPU上跑(000000011)
如果值为4，转换成二进制000000100，那这个进程的所以线程能在2号CPU上跑(000000100)
如果值为5，转换成二进制000000101，那这个进程的所以线程能在0，2号CPU上跑(000000101)
4个字节共32位 所以最多32核 Windows64位 就64核
如果只有一个CPU 把这个设置为4 那么这个进程就死了
5、
+0x280 BasePriority : Char
基础优先级或最低优先级 该进程中的所有线程最起码的优先级.
其他成员
1、
+0x440 UniqueProcessId : Ptr64 Void
进程的编号 任务管理器中的PID
当我们把它改成0使用时，程序依然可以跑，但是某些API可能不能用了
2、
+0x448 ActiveProcessLinks : _LIST_ENTRY
双向链表 所有的活动进程都连接在一起，构成了一个链表PsActiveProcessHead指向全局链表头
它可以看到当前操作系统中，所有正在运行的进程
3、
+0x468 CreateTime : _LARGE_INTEGER
进程的创建时间
4、
+0x840 ExitTime : _LARGE_INTEGER
进程的退出时间
5、
+0x470 ProcessQuotaUsage : [2] Uint8B
+0x480 ProcessQuotaPeak : [2] Uint8B
物理页相关的统计信息
6、
+0x4b0 ExceptionPortData : Ptr64 Void
+0x4b0 ExceptionPortValue : Uint8B
+0x4b0 ExceptionPortState : Pos 0, 3 Bits
+0x578 DebugPort : Ptr64 Void
调试相关
7、
+0x490 PeakVirtualSize : Uint8B
+0x498 VirtualSize : Uint8B
+0x648 CommitCharge : Uint8B
虚拟内存相关的统计信息
8、
+0x570 ObjectTable : Ptr64 _HANDLE_TABLE
句柄表
9、
+0x5a8 ImageFileName : [15] UChar
进程镜像文件名 最多16个字节
10、
+0x5f0 ActiveThreads : Uint4B
活动线程的数量
11、
+0x7d8 VadRoot : _RTL_AVL_TREE
标识0-2G哪些地址没占用了
PEB
+0x550 Peb : Ptr64 _PEB
前言
PEB，它是进程环境块是一个从内核分配给每个进程的用户模式结构，存放进程信息，每个进程都有自己的PEB信息。位于用户地址空间
PEB的位置取决于进程是在32位还是64位地址空间中运行
在32位进程中，可以在FS寄存器上找到具有48字节偏移量的PEB
在64位进程中，可以将其PEB定位在偏移的GS寄存器上
从Windows 2000以来，它就一直存在于 Windows 中，并且从那以后通过更新版本的 Windows 对其进行了改进
实操
伪装CommandLine
手工实现
通常的恶意进程往往特征会比较明显，我们可以伪造PEB进程环境块来伪装自己，让自己的特征不那么明显，从而增加一点存活率
查看进程的PEB内容
0:010> r $PEB
$peb=000000792ea25000
0:010> dt _PEB @$PEB
ntdll!_PEB
+0x000 InheritedAddressSpace : 0 ''
+0x001 ReadImageFileExecOptions : 0 ''
+0x002 BeingDebugged : 0x1 ''
+0x003 BitField : 0x84 ''
+0x003 ImageUsesLargePages : 0y0
+0x003 IsProtectedProcess : 0y0
+0x003 IsImageDynamicallyRelocated : 0y1
+0x003 SkipPatchingUser32Forwarders : 0y0
+0x003 IsPackagedProcess : 0y0
+0x003 IsAppContainer : 0y0
+0x003 IsProtectedProcessLight : 0y0
+0x003 IsLongPathAwareProcess : 0y1
+0x004 Padding0 : [4] ""
+0x008 Mutant : 0xffffffff`ffffffff Void
+0x010 ImageBaseAddress : 0x00007ff6`a4710000 Void
+0x018 Ldr : 0x00007ffd`2b0ba4c0 _PEB_LDR_DATA
+0x020 ProcessParameters : 0x000001ce`40ff3390 _RTL_USER_PROCESS_PARAMETERS
+0x028 SubSystemData : 0x00007ffd`1f3391d0 Void
+0x030 ProcessHeap : 0x000001ce`40ff0000 Void
+0x038 FastPebLock : 0x00007ffd`2b0ba0e0 _RTL_CRITICAL_SECTION
+0x040 AtlThunkSListPtr : (null)
+0x048 IFEOKey : (null)
+0x050 CrossProcessFlags : 1
+0x050 ProcessInJob : 0y1
+0x050 ProcessInitializing : 0y0
+0x050 ProcessUsingVEH : 0y0
+0x050 ProcessUsingVCH : 0y0
+0x050 ProcessUsingFTH : 0y0
+0x050 ProcessPreviouslyThrottled : 0y0
+0x050 ProcessCurrentlyThrottled : 0y0
+0x050 ProcessImagesHotPatched : 0y0
+0x050 ReservedBits0 : 0y000000000000000000000000 (0)
+0x054 Padding1 : [4] ""
+0x058 KernelCallbackTable : 0x00007ffd`2a911070 Void
+0x058 UserSharedInfoPtr : 0x00007ffd`2a911070 Void
+0x060 SystemReserved : 0
+0x064 AtlThunkSListPtr32 : 0
+0x068 ApiSetMap : 0x000001ce`40f80000 Void
+0x070 TlsExpansionCounter : 0
+0x074 Padding2 : [4] ""
+0x078 TlsBitmap : 0x00007ffd`2b0ba440 Void
+0x080 TlsBitmapBits : [2] 0xffffffff
+0x088 ReadOnlySharedMemoryBase : 0x00007df4`81fe0000 Void
+0x090 SharedData : (null)
+0x098 ReadOnlyStaticServerData : 0x00007df4`81fe0750 -> (null)
+0x0a0 AnsiCodePageData : 0x00007df5`84120000 Void
+0x0a8 OemCodePageData : 0x00007df5`84120000 Void
+0x0b0 UnicodeCaseTableData : 0x00007df5`84150028 Void
+0x0b8 NumberOfProcessors : 0xc
+0x0bc NtGlobalFlag : 0
+0x0c0 CriticalSectionTimeout : _LARGE_INTEGER 0xffffe86d`079b8000
+0x0c8 HeapSegmentReserve : 0x100000
+0x0d0 HeapSegmentCommit : 0x2000
+0x0d8 HeapDeCommitTotalFreeThreshold : 0x10000
+0x0e0 HeapDeCommitFreeBlockThreshold : 0x1000
+0x0e8 NumberOfHeaps : 4
+0x0ec MaximumNumberOfHeaps : 0x10
+0x0f0 ProcessHeaps : 0x00007ffd`2b0b8d40 -> 0x000001ce`40ff0000 Void
+0x0f8 GdiSharedHandleTable : 0x000001ce`41430000 Void
+0x100 ProcessStarterHelper : (null)
+0x108 GdiDCAttributeList : 0x14
+0x10c Padding3 : [4] ""
+0x110 LoaderLock : 0x00007ffd`2b0b44f8 _RTL_CRITICAL_SECTION
+0x118 OSMajorVersion : 0xa
+0x11c OSMinorVersion : 0
+0x120 OSBuildNumber : 0x4a64
+0x122 OSCSDVersion : 0
+0x124 OSPlatformId : 2
+0x128 ImageSubsystem : 2
+0x12c ImageSubsystemMajorVersion : 0xa
+0x130 ImageSubsystemMinorVersion : 0
+0x134 Padding4 : [4] ""
+0x138 ActiveProcessAffinityMask : 0xfff
+0x140 GdiHandleBuffer : [60] 0
+0x230 PostProcessInitRoutine : (null)
+0x238 TlsExpansionBitmap : 0x00007ffd`2b0ba420 Void
+0x240 TlsExpansionBitmapBits : [32] 1
+0x2c0 SessionId : 2
+0x2c4 Padding5 : [4] ""
+0x2c8 AppCompatFlags : _ULARGE_INTEGER 0x0
+0x2d0 AppCompatFlagsUser : _ULARGE_INTEGER 0x0
+0x2d8 pShimData : 0x000001ce`40fc0000 Void
+0x2e0 AppCompatInfo : (null)
+0x2e8 CSDVersion : _UNICODE_STRING ""
+0x2f8 ActivationContextData : 0x000001ce`40fb0000 _ACTIVATION_CONTEXT_DATA
+0x300 ProcessAssemblyStorageMap : 0x000001ce`40ffc1c0 _ASSEMBLY_STORAGE_MAP
+0x308 SystemDefaultActivationContextData : 0x000001ce`40fa0000 _ACTIVATION_CONTEXT_DATA
+0x310 SystemAssemblyStorageMap : (null)
+0x318 MinimumStackCommit : 0
+0x320 SparePointers : [4] (null)
+0x340 SpareUlongs : [5] 0
+0x358 WerRegistrationData : 0x000001ce`42e80000 Void
+0x360 WerShipAssertPtr : (null)
+0x368 pUnused : (null)
+0x370 pImageHeaderHash : (null)
+0x378 TracingFlags : 0
+0x378 HeapTracingEnabled : 0y0
+0x378 CritSecTracingEnabled : 0y0
+0x378 LibLoaderTracingEnabled : 0y0
+0x378 SpareTracingBits : 0y00000000000000000000000000000 (0)
+0x37c Padding6 : [4] ""
+0x380 CsrServerReadOnlySharedMemoryBase : 0x00007df4`89e00000
+0x388 TppWorkerpListLock : 0
+0x390 TppWorkerpList : _LIST_ENTRY [ 0x00000079`2e94f7b0 - 0x00000079`2edff7b0 ]
+0x3a0 WaitOnAddressHashTable : [128] (null)
+0x7a0 TelemetryCoverageHeader : (null)
+0x7a8 CloudFileFlags : 0xe0
+0x7ac CloudFileDiagFlags : 0
+0x7b0 PlaceholderCompatibilityMode : 2 ''
+0x7b1 PlaceholderCompatibilityModeReserved : [7] ""
+0x7b8 LeapSecondData : 0x00007df5`84110000 _LEAP_SECOND_DATA
+0x7c0 LeapSecondFlags : 0
+0x7c0 SixtySecondEnabled : 0y0
+0x7c0 Reserved : 0y0000000000000000000000000000000 (0)
+0x7c4 NtGlobalFlag2 : 0
在0x00007ff7b98c0000`处为：ImageBaseAddress
+0x010 ImageBaseAddress : 0x00007ff6`a4710000 Void
查看其内容
db 0x00007ff6`a4710000 L300
0:010> db 0x00007ff6`a4710000 L300
00007ff6`a4710000 4d 5a 90 00 03 00 00 00-04 00 00 00 ff ff 00 00 MZ..............
00007ff6`a4710010 b8 00 00 00 00 00 00 00-40 00 00 00 00 00 00 00 ........@.......
00007ff6`a4710020 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
00007ff6`a4710030 00 00 00 00 00 00 00 00-00 00 00 00 f8 00 00 00 ................
00007ff6`a4710040 0e 1f ba 0e 00 b4 09 cd-21 b8 01 4c cd 21 54 68 ........!..L.!Th
00007ff6`a4710050 69 73 20 70 72 6f 67 72-61 6d 20 63 61 6e 6e 6f is program canno
00007ff6`a4710060 74 20 62 65 20 72 75 6e-20 69 6e 20 44 4f 53 20 t be run in DOS
00007ff6`a4710070 6d 6f 64 65 2e 0d 0d 0a-24 00 00 00 00 00 00 00 mode....$.......
00007ff6`a4710080 65 39 d7 77 21 58 b9 24-21 58 b9 24 21 58 b9 24 e9.w!X.$!X.$!X.$
00007ff6`a4710090 28 20 2a 24 11 58 b9 24-35 33 bd 25 2b 58 b9 24 ( *$.X.$53.%+X.$
00007ff6`a47100a0 35 33 ba 25 22 58 b9 24-35 33 b8 25 28 58 b9 24 53.%"X.$53.%(X.$
00007ff6`a47100b0 21 58 b8 24 09 5d b9 24-35 33 b1 25 3f 58 b9 24 !X.$.].$53.%?X.$
00007ff6`a47100c0 35 33 bc 25 3e 58 b9 24-35 33 44 24 20 58 b9 24 53.%>X.$53D$ X.$
00007ff6`a47100d0 35 33 46 24 20 58 b9 24-35 33 bb 25 20 58 b9 24 53F$ X.$53.% X.$
00007ff6`a47100e0 52 69 63 68 21 58 b9 24-00 00 00 00 00 00 00 00 Rich!X.$........
00007ff6`a47100f0 00 00 00 00 00 00 00 00-50 45 00 00 64 86 07 00 ........PE..d...
00007ff6`a4710100 d3 ae 78 41 00 00 00 00-00 00 00 00 f0 00 22 00 ..xA..........".
00007ff6`a4710110 0b 02 0e 14 00 4a 02 00-00 e0 00 00 00 00 00 00 .....J..........
00007ff6`a4710120 50 40 02 00 00 10 00 00-00 00 71 a4 f6 7f 00 00 P@........q.....
00007ff6`a4710130 00 10 00 00 00 02 00 00-0a 00 00 00 0a 00 00 00 ................
00007ff6`a4710140 0a 00 00 00 00 00 00 00-00 80 03 00 00 04 00 00 ................
00007ff6`a4710150 81 7b 03 00 02 00 60 c1-00 00 08 00 00 00 00 00 .{....`.........
00007ff6`a4710160 00 10 01 00 00 00 00 00-00 00 10 00 00 00 00 00 ................
00007ff6`a4710170 00 10 00 00 00 00 00 00-00 00 00 00 10 00 00 00 ................
00007ff6`a4710180 00 00 00 00 00 00 00 00-a8 d0 02 00 44 02 00 00 ............D...
00007ff6`a4710190 00 60 03 00 d8 0b 00 00-00 30 03 00 ec 10 00 00 .`.......0......
00007ff6`a47101a0 00 00 00 00 00 00 00 00-00 70 03 00 d4 02 00 00 .........p......
00007ff6`a47101b0 20 ac 02 00 54 00 00 00-00 00 00 00 00 00 00 00 ...T...........
00007ff6`a47101c0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
00007ff6`a47101d0 d0 66 02 00 18 01 00 00-00 00 00 00 00 00 00 00 .f..............
00007ff6`a47101e0 e8 67 02 00 00 09 00 00-c0 c9 02 00 e0 00 00 00 .g..............
00007ff6`a47101f0 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
00007ff6`a4710200 2e 74 65 78 74 00 00 00-0f 49 02 00 00 10 00 00 .text....I......
00007ff6`a4710210 00 4a 02 00 00 04 00 00-00 00 00 00 00 00 00 00 .J..............
00007ff6`a4710220 00 00 00 00 20 00 00 60-2e 72 64 61 74 61 00 00 .... ..`.rdata..
00007ff6`a4710230 68 92 00 00 00 60 02 00-00 94 00 00 00 4e 02 00 h....`.......N..
00007ff6`a4710240 00 00 00 00 00 00 00 00-00 00 00 00 40 00 00 40 ............@..@
00007ff6`a4710250 2e 64 61 74 61 00 00 00-38 27 00 00 00 00 03 00 .data...8'......
00007ff6`a4710260 00 0e 00 00 00 e2 02 00-00 00 00 00 00 00 00 00 ................
00007ff6`a4710270 00 00 00 00 40 00 00 c0-2e 70 64 61 74 61 00 00 ....@....pdata..
00007ff6`a4710280 ec 10 00 00 00 30 03 00-00 12 00 00 00 f0 02 00 .....0..........
00007ff6`a4710290 00 00 00 00 00 00 00 00-00 00 00 00 40 00 00 40 ............@..@
00007ff6`a47102a0 2e 64 69 64 61 74 00 00-78 01 00 00 00 50 03 00 .didat..x....P..
00007ff6`a47102b0 00 02 00 00 00 02 03 00-00 00 00 00 00 00 00 00 ................
00007ff6`a47102c0 00 00 00 00 40 00 00 c0-2e 72 73 72 63 00 00 00 ....@....rsrc...
00007ff6`a47102d0 d8 0b 00 00 00 60 03 00-00 0c 00 00 00 04 03 00 .....`..........
00007ff6`a47102e0 00 00 00 00 00 00 00 00-00 00 00 00 40 00 00 40 ............@..@
00007ff6`a47102f0 2e 72 65 6c 6f 63 00 00-d4 02 00 00 00 70 03 00 .reloc.......p..
更改这个进程的命令行参数，用到的是ProcessParameters
我们可以看到它的结构体为：_RTL_USER_PROCESS_PARAMETERS
+0x020 ProcessParameters : 0x000001ce`40ff3390 _RTL_USER_PROCESS_PARAMETERS
0:011> dt _PEB @$PEB ProcessP*
ntdll!_PEB
+0x020 ProcessParameters : 0x000001ce`40ff3390 _RTL_USER_PROCESS_PARAMETERS
+0x050 ProcessPreviouslyThrottled : 0y0
查看其内容
0:010> dt _RTL_USER_PROCESS_PARAMETERS 0x000001ce`40ff3390
ntdll!_RTL_USER_PROCESS_PARAMETERS
+0x000 MaximumLength : 0x78a
+0x004 Length : 0x78a
+0x008 Flags : 0x6001
+0x00c DebugFlags : 0
+0x010 ConsoleHandle : (null)
+0x018 ConsoleFlags : 0
+0x020 StandardInput : (null)
+0x028 StandardOutput : 0x00000000`00010001 Void
+0x030 StandardError : (null)
+0x038 CurrentDirectory : _CURDIR
+0x050 DllPath : _UNICODE_STRING ""
+0x060 ImagePathName : _UNICODE_STRING "C:\WINDOWS\system32\notepad.exe"
+0x070 CommandLine : _UNICODE_STRING ""C:\WINDOWS\system32\notepad.exe" "
+0x080 Environment : 0x000001ce`40ff0fe0 Void
+0x088 StartingX : 0
+0x08c StartingY : 0
+0x090 CountX : 0
+0x094 CountY : 0
+0x098 CountCharsX : 0
+0x09c CountCharsY : 0
+0x0a0 FillAttribute : 0
+0x0a4 WindowFlags : 0xc01
+0x0a8 ShowWindowFlags : 1
+0x0b0 WindowTitle : _UNICODE_STRING "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Notepad.lnk"
+0x0c0 DesktopInfo : _UNICODE_STRING "Winsta0\Default"
+0x0d0 ShellInfo : _UNICODE_STRING ""
+0x0e0 RuntimeData : _UNICODE_STRING ""
+0x0f0 CurrentDirectores : [32] _RTL_DRIVE_LETTER_CURDIR
+0x3f0 EnvironmentSize : 0x23a4
+0x3f8 EnvironmentVersion : 3
+0x400 PackageDependencyData : (null)
+0x408 ProcessGroupId : 0x6dc8
+0x40c LoaderThreads : 0
+0x410 RedirectionDllName : _UNICODE_STRING ""
+0x420 HeapPartitionName : _UNICODE_STRING ""
+0x430 DefaultThreadpoolCpuSetMasks : (null)
+0x438 DefaultThreadpoolCpuSetMaskCount : 0
+0x43c DefaultThreadpoolThreadMaximum : 0
其中的Commandline就是我们需要更改的项，其为一个_UNICODE_STRING结构
+0x070 CommandLine : _UNICODE_STRING ""C:\WINDOWS\system32\notepad.exe" "
进一步查看它的结构，地址+偏移即可
可以看到在 0x00000204`dfc73958 处就是我们需要更改的内容
0:010> dt _UNICODE_STRING 0x000001ce`40ff3390+0x070
ntdll!_UNICODE_STRING
""C:\WINDOWS\system32\notepad.exe" "
+0x000 Length : 0x44
+0x002 MaximumLength : 0x46
+0x008 Buffer : 0x000001ce`40ff3a18 ""C:\WINDOWS\system32\notepad.exe" "
使用db也可以看到
0:010> db 0x000001ce`40ff3a18
000001ce`40ff3a18 22 00 43 00 3a 00 5c 00-57 00 49 00 4e 00 44 00 ".C.:.\.W.I.N.D.
000001ce`40ff3a28 4f 00 57 00 53 00 5c 00-73 00 79 00 73 00 74 00 O.W.S.\.s.y.s.t.
000001ce`40ff3a38 65 00 6d 00 33 00 32 00-5c 00 6e 00 6f 00 74 00 e.m.3.2.\.n.o.t.
000001ce`40ff3a48 65 00 70 00 61 00 64 00-2e 00 65 00 78 00 65 00 e.p.a.d...e.x.e.
000001ce`40ff3a58 22 00 20 00 00 00 43 00-3a 00 5c 00 50 00 72 00 ". ...C.:.\.P.r.
000001ce`40ff3a68 6f 00 67 00 72 00 61 00-6d 00 44 00 61 00 74 00 o.g.r.a.m.D.a.t.
000001ce`40ff3a78 61 00 5c 00 4d 00 69 00-63 00 72 00 6f 00 73 00 a.\.M.i.c.r.o.s.
000001ce`40ff3a88 6f 00 66 00 74 00 5c 00-57 00 69 00 6e 00 64 00 o.f.t.\.W.i.n.d.
使用ProcessHacker，查看notepad.exe进程
下载地址：https://processhacker.sourceforge.io/downloads.php
将其指向的字符串进行修改
eu 0x000001ce`40ff3a18 "C:\\Windows\\System32\\matrix.exe"
进行查看
0:010> dt _UNICODE_STRING 0x000001ce`40ff3390+0x070
ntdll!_UNICODE_STRING
"C:\Windows\System32\matrix.exexe" "
+0x000 Length : 0x44
+0x002 MaximumLength : 0x46
+0x008 Buffer : 0x000001ce`40ff3a18 "C:\Windows\System32\matrix.exexe" "
重启使用ProcessHacker，查看notepad.exe进程
成功修改
代码实现
使用NtQueryInformationProcess API函数
参考：https://docs.microsoft.com/en-us/windows/win32/api/winternl/nf-winternl-ntqueryinformationprocess
(我这里在啰嗦一下)
作用：查看进程的信息
结构定义：
__kernel_entry NTSTATUS NtQueryInformationProcess(
[in] HANDLE ProcessHandle,
[in] PROCESSINFOCLASS ProcessInformationClass,
[out] PVOID ProcessInformation,
[in] ULONG ProcessInformationLength,
[out, optional] PULONG ReturnLength
);
注：该函数并没有被微软公开，它在Ntdll.dll 里导出的，所以要想调用此函数，得用LoadLibrary和GetProcAddress来加载
用的时候要#include头文件
参数介绍：
[in] ProcessHandle:要检索其信息的进程的句柄
[in] ProcessInformationClass:要检索的进程信息的类型，它是一个 PROCESSINFOCLASS 的枚举类型，可以取值:
ProcessBasicInformation 0
ProcessDebugPort 7
ProcessWow64Information 26
ProcessImageFileName 27
ProcessBreakOnTermination 29
[out] ProcessInformation:要存放查询结果的缓冲区，这个结构要根据第二个参数取值来决定
ProcessInformationLength:缓冲区大小
ReturnLength:实际返回的写入缓冲区的字节数
继续看一下ProcessBasicInformation这个结构，该结构体的第二个参数是指向PEB的指针
官方定义如下：
typedef struct _PROCESS_BASIC_INFORMATION {
PVOID Reserved1;
PPEB PebBaseAddress;
PVOID Reserved2[2];
ULONG_PTR UniqueProcessId;
PVOID Reserved3;
} PROCESS_BASIC_INFORMATION;
注：修改字符串的同时最好也要修改该结构体的Lenght的成员，使用修改指针的方式实现
代码示例
#include
#include
#include
#include
// 定义函数指针
typedef DWORD(*pNtQueryInformationProcess)(
_In_ HANDLE ProcessHandle,
_In_ PROCESSINFOCLASS ProcessInformationClass,
_Out_ PVOID ProcessInformation,
_In_ ULONG ProcessInformationLength,
_Out_opt_ PULONG ReturnLength
);
int main()
{
HANDLE hProcess = 0;
ULONG length = 0;
HMODULE hModule;
PROCESS_BASIC_INFORMATION ProcessInformation;
pNtQueryInformationProcess NtQueryInformationProcess;
wchar_t CommandLine[] = L"C:\\Windows\\system32\\notepad.exe";
hModule = LoadLibraryA("Ntdll.dll");
// 返回值是当前进程的伪句柄
// 此句柄具有对进程对象的 PROCESS_ALL_ACCESS 访问权限
// 当不再需要伪句柄时，不需要关闭它
hProcess = GetCurrentProcess();
// 获取ntdll.dll中 NtQueryInformationProcess 函数的地址
NtQueryInformationProcess = (pNtQueryInformationProcess)GetProcAddress(hModule, "NtQueryInformationProcess");
// 获取PEB
NtQueryInformationProcess(hProcess, ProcessBasicInformation, &ProcessInformation, sizeof(ProcessInformation), &length);
ProcessInformation.PebBaseAddress->ProcessParameters->CommandLine.Length = sizeof(CommandLine);
ProcessInformation.PebBaseAddress->ProcessParameters->CommandLine.Buffer = (PWSTR)&CommandLine;
getchar();
return 0;
}
查看调用的dll
操作系统会在ring3维护一个结构体PEB(进程环境块)
x86环境下，段寄存器FS:[00]在三环时始终指向TEB(线程环境块)，TEB偏移0x30则指向该进程的PEB
x64环境下，段寄存器GS:[00]在三环时始终指向TEB(线程环境块)，TEB偏移0x60则指向该进程的PEB
通常我们可以使用内联汇编的方式获取PEB位于内存的虚拟地址
mov eax, fs: [0x30] ;x86
mov eax, gs: [0x60] ;x64
通过Windbg定位TEB->PEB
0:010> r $TEB
$teb=000000792ea3c000
0:010> dt _TEB @$TEB
ntdll!_TEB
+0x000 NtTib : _NT_TIB
+0x038 EnvironmentPointer : (null)
+0x040 ClientId : _CLIENT_ID
+0x050 ActiveRpcHandle : (null)
+0x058 ThreadLocalStoragePointer : (null)
+0x060 ProcessEnvironmentBlock : 0x00000079`2ea25000 _PEB
+0x068 LastErrorValue : 0
+0x06c CountOfOwnedCriticalSections : 0
+0x070 CsrClientThread : (null)
+0x078 Win32ThreadInfo : (null)
+0x080 User32Reserved : [26] 0
+0x0e8 UserReserved : [5] 0
+0x100 WOW32Reserved : (null)
+0x108 CurrentLocale : 0x804
+0x10c FpSoftwareStatusRegister : 0
+0x110 ReservedForDebuggerInstrumentation : [16] (null)
+0x190 SystemReserved1 : [30] (null)
+0x280 PlaceholderCompatibilityMode : 0 ''
+0x281 PlaceholderHydrationAlwaysExplicit : 0 ''
+0x282 PlaceholderReserved : [10] ""
+0x28c ProxiedProcessId : 0
+0x290 _ActivationStack : _ACTIVATION_CONTEXT_STACK
+0x2b8 WorkingOnBehalfTicket : [8] ""
+0x2c0 ExceptionCode : 0n0
+0x2c4 Padding0 : [4] ""
+0x2c8 ActivationContextStackPointer : 0x00000079`2ea3c290 _ACTIVATION_CONTEXT_STACK
+0x2d0 InstrumentationCallbackSp : 0
+0x2d8 InstrumentationCallbackPreviousPc : 0
+0x2e0 InstrumentationCallbackPreviousSp : 0
+0x2e8 TxFsContext : 0xfffe
+0x2ec InstrumentationCallbackDisabled : 0 ''
+0x2ed UnalignedLoadStoreExceptions : 0 ''
+0x2ee Padding1 : [2] ""
+0x2f0 GdiTebBatch : _GDI_TEB_BATCH
+0x7d8 RealClientId : _CLIENT_ID
+0x7e8 GdiCachedProcessHandle : (null)
+0x7f0 GdiClientPID : 0
+0x7f4 GdiClientTID : 0
+0x7f8 GdiThreadLocalInfo : (null)
+0x800 Win32ClientInfo : [62] 0
+0x9f0 glDispatchTable : [233] (null)
+0x1138 glReserved1 : [29] 0
+0x1220 glReserved2 : (null)
+0x1228 glSectionInfo : (null)
+0x1230 glSection : (null)
+0x1238 glTable : (null)
+0x1240 glCurrentRC : (null)
+0x1248 glContext : (null)
+0x1250 LastStatusValue : 0
+0x1254 Padding2 : [4] ""
+0x1258 StaticUnicodeString : _UNICODE_STRING ""
+0x1268 StaticUnicodeBuffer : [261] ""
+0x1472 Padding3 : [6] ""
+0x1478 DeallocationStack : 0x00000079`2ef80000 Void
+0x1480 TlsSlots : [64] (null)
+0x1680 TlsLinks : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
+0x1690 Vdm : (null)
+0x1698 ReservedForNtRpc : (null)
+0x16a0 DbgSsReserved : [2] (null)
+0x16b0 HardErrorMode : 0
+0x16b4 Padding4 : [4] ""
+0x16b8 Instrumentation : [11] (null)
+0x1710 ActivityId : _GUID {00000000-0000-0000-0000-000000000000}
+0x1720 SubProcessTag : (null)
+0x1728 PerflibData : (null)
+0x1730 EtwTraceData : (null)
+0x1738 WinSockData : (null)
+0x1740 GdiBatchCount : 0
+0x1744 CurrentIdealProcessor : _PROCESSOR_NUMBER
+0x1744 IdealProcessorValue : 0
+0x1744 ReservedPad0 : 0 ''
+0x1745 ReservedPad1 : 0 ''
+0x1746 ReservedPad2 : 0 ''
+0x1747 IdealProcessor : 0 ''
+0x1748 GuaranteedStackBytes : 0
+0x174c Padding5 : [4] ""
+0x1750 ReservedForPerf : (null)
+0x1758 ReservedForOle : (null)
+0x1760 WaitingOnLoaderLock : 0
+0x1764 Padding6 : [4] ""
+0x1768 SavedPriorityState : (null)
+0x1770 ReservedForCodeCoverage : 0
+0x1778 ThreadPoolData : (null)
+0x1780 TlsExpansionSlots : (null)
+0x1788 DeallocationBStore : (null)
+0x1790 BStoreLimit : (null)
+0x1798 MuiGeneration : 0
+0x179c IsImpersonating : 0
+0x17a0 NlsCache : (null)
+0x17a8 pShimData : (null)
+0x17b0 HeapData : 0
+0x17b4 Padding7 : [4] ""
+0x17b8 CurrentTransactionHandle : (null)
+0x17c0 ActiveFrame : (null)
+0x17c8 FlsData : (null)
+0x17d0 PreferredLanguages : (null)
+0x17d8 UserPrefLanguages : (null)
+0x17e0 MergedPrefLanguages : (null)
+0x17e8 MuiImpersonation : 0
+0x17ec CrossTebFlags : 0
+0x17ec SpareCrossTebBits : 0y0000000000000000 (0)
+0x17ee SameTebFlags : 8
+0x17ee SafeThunkCall : 0y0
+0x17ee InDebugPrint : 0y0
+0x17ee HasFiberData : 0y0
+0x17ee SkipThreadAttach : 0y1
+0x17ee WerInShipAssertCode : 0y0
+0x17ee RanProcessInit : 0y0
+0x17ee ClonedThread : 0y0
+0x17ee SuppressDebugMsg : 0y0
+0x17ee DisableUserStackWalk : 0y0
+0x17ee RtlExceptionAttached : 0y0
+0x17ee InitialThread : 0y0
+0x17ee SessionAware : 0y0
+0x17ee LoadOwner : 0y0
+0x17ee LoaderWorker : 0y0
+0x17ee SkipLoaderInit : 0y0
+0x17ee SpareSameTebBits : 0y0
+0x17f0 TxnScopeEnterCallback : (null)
+0x17f8 TxnScopeExitCallback : (null)
+0x1800 TxnScopeContext : (null)
+0x1808 LockCount : 0
+0x180c WowTebOffset : 0n0
+0x1810 ResourceRetValue : (null)
+0x1818 ReservedForWdf : (null)
+0x1820 ReservedForCrt : 0
+0x1828 EffectiveContainerId : _GUID {00000000-0000-0000-0000-000000000000}
PEB在
+0x060 ProcessEnvironmentBlock : 0x00000079`2ea25000 _PEB
在PEB偏移0x018位置存在着三条模块链表
+0x018 Ldr : 0x00007ffd`2b0ba4c0 _PEB_LDR_DATA
使用汇编获取
mov eax, [eax + 0x018]; x64
mov eax, [eax + 0x0c] ;x86
根据链表含义分别是 模块加载顺序、模块初始化顺序、模块内存顺序
0:010> dt _PEB_LDR_DATA 0x00007ffd`2b0ba4c0
ntdll!_PEB_LDR_DATA
+0x000 Length : 0x58
+0x004 Initialized : 0x1 ''
+0x008 SsHandle : (null)
+0x010 InLoadOrderModuleList : _LIST_ENTRY [ 0x000001ce`40ff3dc0 - 0x000001ce`410232d0 ]
+0x020 InMemoryOrderModuleList : _LIST_ENTRY [ 0x000001ce`40ff3dd0 - 0x000001ce`410232e0 ]
+0x030 InInitializationOrderModuleList : _LIST_ENTRY [ 0x000001ce`40ff3c50 - 0x000001ce`410232f0 ]
+0x040 EntryInProgress : (null)
+0x048 ShutdownInProgress : 0 ''
+0x050 ShutdownThreadId : (null)
这三个双向链表LIST_ENTRY，链表的每一个都是指向_LDR_DATA_TABLE_ENTRY结构的指针
它们分别代表模块加载顺序，模块在内存中的加载顺序、模块初始化装载的顺序
_PEB_LDR_DATA的定义如下
typedef struct _PEB_LDR_DATA {
ULONG Length;
ULONG Initialized;
PVOID SsHandle;
LIST_ENTRY InLoadOrderModuleList;
LIST_ENTRY InMemoryOrderModuleList;
LIST_ENTRY InInitializationOrderModuleList;
} PEB_LDR_DATA, * PPEB_LDR_DATA;
_LDR_DATA_TABLE_ENTRY的定义如下
typedef struct _LDR_DATA_TABLE_ENTRY {
PVOID Reserved1[2];
LIST_ENTRY InMemoryOrderLinks;
PVOID Reserved2[2];
PVOID DllBase; // 模块基地址
PVOID EntryPoint;
PVOID Reserved3;
UNICODE_STRING FullDllName;// 模块名称
BYTE Reserved4[8];
PVOID Reserved5[3];
union {
ULONG CheckSum;
PVOID Reserved6;
};
ULONG TimeDateStamp;
} LDR_DATA_TABLE_ENTRY, *PLDR_DATA_TABLE_ENTRY;
我们用到的是其中的InMemoryOrderModuleList ，它在_LIST_ENTRY与_LDR_DATA_TABLE_ENTRY之中
0:010> dt _LIST_ENTRY 0x000001ce`40ff3dd0
ntdll!_LIST_ENTRY
[ 0x000001ce`40ff3c40 - 0x00007ffd`2b0ba4e0 ]
+0x000 Flink : 0x000001ce`40ff3c40 _LIST_ENTRY [ 0x000001ce`40ff4290 - 0x000001ce`40ff3dd0 ]
+0x008 Blink : 0x00007ffd`2b0ba4e0 _LIST_ENTRY [ 0x000001ce`40ff3dd0 - 0x000001ce`410232e0 ]
0:010> dt _LDR_DATA_TABLE_ENTRY 0x000001ce`40ff3dd0
ntdll!_LDR_DATA_TABLE_ENTRY
+0x000 InLoadOrderLinks : _LIST_ENTRY [ 0x000001ce`40ff3c40 - 0x00007ffd`2b0ba4e0 ]
+0x010 InMemoryOrderLinks : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
+0x020 InInitializationOrderLinks : _LIST_ENTRY [ 0x00007ff6`a4710000 - 0x00007ff6`a4734050 ]
+0x030 DllBase : 0x00000000`00038000 Void
+0x038 EntryPoint : 0x00000000`0040003e Void
+0x040 SizeOfImage : 0x40ff39d8
+0x048 FullDllName : _UNICODE_STRING "notepad.exe"
+0x058 BaseDllName : _UNICODE_STRING "雰䄀ǎ"
+0x068 FlagGroup : [4] "???"
+0x068 Flags : 0x2b0ba190
+0x068 PackagedBinary : 0y0
+0x068 MarkedForRemoval : 0y0
+0x068 ImageDll : 0y0
+0x068 LoadNotificationsSent : 0y0
+0x068 TelemetryEntryProcessed : 0y1
+0x068 ProcessStaticImport : 0y0
+0x068 InLegacyLists : 0y0
+0x068 InIndexes : 0y1
+0x068 ShimDll : 0y1
+0x068 InExceptionTable : 0y0
+0x068 ReservedFlags1 : 0y00
+0x068 LoadInProgress : 0y0
+0x068 LoadConfigProcessed : 0y1
+0x068 EntryProcessed : 0y0
+0x068 ProtectDelayLoad : 0y1
+0x068 ReservedFlags3 : 0y11
+0x068 DontCallForThreads : 0y0
+0x068 ProcessAttachCalled : 0y1
+0x068 ProcessAttachFailed : 0y0
+0x068 CorDeferredValidate : 0y0
+0x068 CorImage : 0y0
+0x068 DontRelocate : 0y0
+0x068 CorILOnly : 0y1
+0x068 ChpeImage : 0y1
+0x068 ReservedFlags5 : 0y10
+0x068 Redirected : 0y0
+0x068 ReservedFlags6 : 0y01
+0x068 CompatDatabaseProcessed : 0y0
+0x06c ObsoleteLoadCount : 0x7ffd
+0x06e TlsIndex : 0
+0x070 HashLinks : _LIST_ENTRY [ 0x00000000`4178aed3 - 0x00000000`00000000 ]
+0x080 TimeDateStamp : 0
+0x088 EntryPointActivationContext : 0x000001ce`40ff3ef0 _ACTIVATION_CONTEXT
+0x090 Lock : 0x000001ce`40ff3ef0 Void
+0x098 DdagNode : 0x000001ce`40ff3ef0 _LDR_DDAG_NODE
+0x0a0 NodeModuleLink : _LIST_ENTRY [ 0x00000000`00000000 - 0x00000000`00000000 ]
+0x0b0 LoadContext : 0x00007ffd`2b06c3a4 _LDRP_LOAD_CONTEXT
+0x0b8 ParentDllBase : (null)
+0x0c0 SwitchBackContext : (null)
+0x0c8 BaseAddressIndexNode : _RTL_BALANCED_NODE
+0x0e0 MappingInfoIndexNode : _RTL_BALANCED_NODE
+0x0f8 OriginalBase : 0x00000004`4c900b25
+0x100 LoadTime : _LARGE_INTEGER 0x00000002`00000000
+0x108 BaseNameHashValue : 0
+0x10c LoadReason : 0 ( LoadReasonStaticDependency )
+0x110 ImplicitPathOptions : 0
+0x114 ReferenceCount : 0
+0x118 DependentLoadFlags : 0xe93fdc0b
+0x11c SigningLevel : 0xf ''
因为它是一个内存区域我们可以用循环的方式来遍历它
!list -x "dt _LDR_DATA_TABLE_ENTRY" 0x000001ce`40ff3dd0
注：这里我就不贴输出了
跟进其结构，实现模块断链隐藏dll也是没问题的
使用!dlls也可以达到同样的效果
注：这里我就不贴输出了
获取PEB
PEB结构非常复杂
贴一下大佬们整理好的头文件，方便相关结构体调用
http://bytepointer.com/resources/tebpeb32.htm
http://bytepointer.com/resources/tebpeb64.htm
NtQueryInformationProcess
NtQueryInformationProcess 的第二个参数可以是一个PROCESS_BASIC_INFORMATION的结构体
该结构体的第二个参数是指向PEB的指针，所以我们可以使用该方法来获取PEB的内容
汇编调用
对于获取PEB来说32位与64位并不相同，分别存放在fs与gs寄存器中
x64汇编：
GetPEBAsm64 proc
push rbx
xor rbx,rbx
xor rax,rax
mov rbx, qword ptr gs:[00000060h]
mov rax, rbx
pop rbx
ret
GetPEBAsm64 endp
x86汇编(采用内联汇编)：
__asm
{
mov eax, dword ptr fs : [00000030h]
mov peb, eax
}
因为VStudio默认支持x86汇编，这里来演示x64如何内联汇编查找PEB，这里的代码直接选择获取其参数：
.code
ProcParam PROC
mov rax, gs:[30h] ; TEB from gs in 64 bit only
mov rax, [rax+60h] ; PEB
mov rax, [rax+20h] ; RTL_USER_PROCESS_PARAMETERS
ret
ProcParam ENDP
end
原结构
typedef struct _RTL_USER_PROCESS_PARAMETERS
{
DWORD MaximumLength; //0x00
DWORD Length; //0x04
DWORD Flags; //0x08
DWORD DebugFlags; //0x0C
void* ConsoleHandle; //0x10
DWORD ConsoleFlags; //0x14
HANDLE StdInputHandle; //0x18
HANDLE StdOutputHandle; //0x1C
HANDLE StdErrorHandle; //0x20
UNICODE_STRING CurrentDirectoryPath; //0x24
HANDLE CurrentDirectoryHandle; //0x2C
UNICODE_STRING DllPath; //0x30
UNICODE_STRING ImagePathName; //0x38
UNICODE_STRING CommandLine; //0x40
void* Environment; //0x48
DWORD StartingPositionLeft; //0x4C
DWORD StartingPositionTop; //0x50
DWORD Width; //0x54
DWORD Height; //0x58
DWORD CharWidth; //0x5C
DWORD CharHeight; //0x60
DWORD ConsoleTextAttributes; //0x64
DWORD WindowFlags; //0x68
DWORD ShowWindowFlags; //0x6C
UNICODE_STRING WindowTitle; //0x70UNICODE_STRING DesktopName; //0x78
UNICODE_STRING ShellInfo; //0x80
UNICODE_STRING RuntimeData; //0x88
RTL_DRIVE_LETTER_CURDIR DLCurrentDirectory[0x20]; //0x90
} RTL_USER_PROCESS_PARAMETERS;
定义主程序，根据原结构可以做自己需要的修改
#include
#include
typedef struct _UNICODE_STRING {
unsigned short Length;
unsigned short MaximumLength;
wchar_t* Buffer;
} UNICODE_STRING, * PUNICODE_STRING;
typedef struct _CURDIR {
UNICODE_STRING DosPath; void* Handle;
} CURDIR, * PCURDIR;
typedef struct _RTL_USER_PROCESS_PARAMETERS {
unsigned int MaximumLength;
unsigned int Length;
unsigned int Flags;
unsigned int DebugFlags;
void* ConsoleHandle;
unsigned int ConsoleFlags;
void* StandardInput;
void* StandardOutput;
void* StandardError;
CURDIR CurrentDirectory;
} RTL_USER_PROCESS_PARAMETERS, * PRTL_USER_PROCESS_PARAMETERS;
PRTL_USER_PROCESS_PARAMETERS ProcParam(void);
int main(void)
{
wprintf(L"%s\n", ProcParam()->CurrentDirectory.DosPath.Buffer);
}
添加汇编文件
配置汇编文件
生成依赖项中勾选asm
内部函数
像 __readfsbyte 、 __readfsdword 这类双下划线开头的都是内部函数，与正常函数的区别在于，这些函数直接存在于编译器中，在编译器编译的时候，会将它们直接替换成对应的指令集
32位：__readfsbyte、__readfsdword、__readfsqword、__readfsword
从相对于 FS 段开头的偏移量指定的位置读取内存
unsigned char __readfsbyte(
unsigned long Offset
);
unsigned short __readfsword(
unsigned long Offset
);
unsigned long __readfsdword(
unsigned long Offset
);
unsigned __int64 __readfsqword(
unsigned long Offset
);
64位：__readgsbyte、__readgsdword、__readgsqword、__readgsword
从相对于 GS 段开头的偏移量指定的位置读取内存。
unsigned char __readgsbyte(
unsigned long Offset
);
unsigned short __readgsword(
unsigned long Offset
);
unsigned long __readgsdword(
unsigned long Offset
);
unsigned __int64 __readgsqword(
unsigned long Offset
);
代码示例
int main(VOID) {
PPEB Peb = (PPEB)__readfsdword(0x30); //32bit process
PPEB Peb = (PPEB)__readgsqword(0x60); //64bit process
return ERROR_SUCCESS;
}
整体代码
#include
#include
#include
typedef struct _UNICODE_STRING {
USHORT Length;
USHORT MaximumLength;
PWSTR Buffer;
} UNICODE_STRING, * PUNICODE_STRING;
typedef struct _PEB_LDR_DATA {
BYTE Reserved1[8];
PVOID Reserved2[3];
LIST_ENTRY InMemoryOrderModuleList;
} PEB_LDR_DATA, * PPEB_LDR_DATA;
typedef struct _RTL_USER_PROCESS_PARAMETERS {
BYTE Reserved1[16];
PVOID Reserved2[10];
UNICODE_STRING ImagePathName;
UNICODE_STRING CommandLine;
} RTL_USER_PROCESS_PARAMETERS, * PRTL_USER_PROCESS_PARAMETERS;
typedef struct _PEB {
BYTE Reserved1[2];
BYTE BeingDebugged;
BYTE Reserved2[1];
PVOID Reserved3[2];
PPEB_LDR_DATA Ldr;
PRTL_USER_PROCESS_PARAMETERS ProcessParameters;
PVOID Reserved4[3];
PVOID AtlThunkSListPtr;
PVOID Reserved5;
ULONG Reserved6;
PVOID Reserved7;
ULONG Reserved8;
ULONG AtlThunkSListPtr32;
PVOID Reserved9[45];
BYTE Reserved10[96];
BYTE Reserved11[128];
PVOID Reserved12[1];
ULONG SessionId;
} PEB, * PPEB;
#ifndef _WIN64
PPEB pPeb = (PPEB)__readfsdword(0x30);
#else
PPEB pPeb = (PPEB)__readgsqword(0x60);
#endif // _WIN64
int main(void)
{
wprintf(L"%s\n", pPeb->ProcessParameters->ImagePathName.Buffer);
}
- 发表于 2022-05-06 09:49:29
- 阅读 ( 7039 )
- 分类：渗透测试
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