ETHREAD结构体
ntdll!_ETHREAD +0x000 Tcb : _KTHREAD +0x1c0 CreateTime : _LARGE_INTEGER +0x1c0 NestedFaultCount : Pos 0, 2 Bits +0x1c0 ApcNeeded : Pos 2, 1 Bit +0x1c8 ExitTime : _LARGE_INTEGER +0x1c8 LpcReplyChain : _LIST_ENTRY +0x1c8 KeyedWaitChain : _LIST_ENTRY +0x1d0 ExitStatus : Int4B +0x1d0 OfsChain : Ptr32 Void +0x1d4 PostBlockList : _LIST_ENTRY +0x1dc TerminationPort : Ptr32 _TERMINATION_PORT +0x1dc ReaperLink : Ptr32 _ETHREAD +0x1dc KeyedWaitValue : Ptr32 Void +0x1e0 ActiveTimerListLock : Uint4B +0x1e4 ActiveTimerListHead : _LIST_ENTRY +0x1ec Cid : _CLIENT_ID +0x1f4 LpcReplySemaphore : _KSEMAPHORE +0x1f4 KeyedWaitSemaphore : _KSEMAPHORE +0x208 LpcReplyMessage : Ptr32 Void +0x208 LpcWaitingOnPort : Ptr32 Void +0x20c ImpersonationInfo : Ptr32 _PS_IMPERSONATION_INFORMATION +0x210 IrpList : _LIST_ENTRY +0x218 TopLevelIrp : Uint4B +0x21c DeviceToVerify : Ptr32 _DEVICE_OBJECT +0x220 ThreadsProcess : Ptr32 _EPROCESS +0x224 StartAddress : Ptr32 Void +0x228 Win32StartAddress : Ptr32 Void +0x228 LpcReceivedMessageId : Uint4B +0x22c ThreadListEntry : _LIST_ENTRY +0x234 RundownProtect : _EX_RUNDOWN_REF +0x238 ThreadLock : _EX_PUSH_LOCK +0x23c LpcReplyMessageId : Uint4B +0x240 ReadClusterSize : Uint4B +0x244 GrantedAccess : Uint4B +0x248 CrossThreadFlags : Uint4B +0x248 Terminated : Pos 0, 1 Bit +0x248 DeadThread : Pos 1, 1 Bit +0x248 HideFromDebugger : Pos 2, 1 Bit +0x248 ActiveImpersonationInfo : Pos 3, 1 Bit +0x248 SystemThread : Pos 4, 1 Bit +0x248 HardErrorsAreDisabled : Pos 5, 1 Bit +0x248 BreakOnTermination : Pos 6, 1 Bit +0x248 SkipCreationMsg : Pos 7, 1 Bit +0x248 SkipTerminationMsg : Pos 8, 1 Bit +0x24c SameThreadPassiveFlags : Uint4B +0x24c ActiveExWorker : Pos 0, 1 Bit +0x24c ExWorkerCanWaitUser : Pos 1, 1 Bit +0x24c MemoryMaker : Pos 2, 1 Bit +0x250 SameThreadApcFlags : Uint4B +0x250 LpcReceivedMsgIdValid : Pos 0, 1 Bit +0x250 LpcExitThreadCalled : Pos 1, 1 Bit +0x250 AddressSpaceOwner : Pos 2, 1 Bit +0x254 ForwardClusterOnly : UChar +0x255 DisablePageFaultClustering : UChar
这里借用下hambaga师傅的博客
+0x1ec Cid : _CLIENT_ID
进程ID、线程ID
+0x220 ThreadsProcess : Ptr32 _EPROCESS
指向自己所属进程
+0x22c ThreadListEntry : _LIST_ENTRY
双向链表,一个进程所有的线程都挂在一个链表中,挂的就是这个位置,有两个这样的链表
KTHREAD结构体
ntdll!_KTHREAD +0x000 Header : _DISPATCHER_HEADER +0x010 MutantListHead : _LIST_ENTRY +0x018 InitialStack : Ptr32 Void +0x01c StackLimit : Ptr32 Void +0x020 Teb : Ptr32 Void +0x024 TlsArray : Ptr32 Void +0x028 KernelStack : Ptr32 Void +0x02c DebugActive : UChar +0x02d State : UChar +0x02e Alerted : [2] UChar +0x030 Iopl : UChar +0x031 NpxState : UChar +0x032 Saturation : Char +0x033 Priority : Char +0x034 ApcState : _KAPC_STATE +0x04c ContextSwitches : Uint4B +0x050 IdleSwapBlock : UChar +0x051 Spare0 : [3] UChar +0x054 WaitStatus : Int4B +0x058 WaitIrql : UChar +0x059 WaitMode : Char +0x05a WaitNext : UChar +0x05b WaitReason : UChar +0x05c WaitBlockList : Ptr32 _KWAIT_BLOCK +0x060 WaitListEntry : _LIST_ENTRY +0x060 SwapListEntry : _SINGLE_LIST_ENTRY +0x068 WaitTime : Uint4B +0x06c BasePriority : Char +0x06d DecrementCount : UChar +0x06e PriorityDecrement : Char +0x06f Quantum : Char +0x070 WaitBlock : [4] _KWAIT_BLOCK +0x0d0 LegoData : Ptr32 Void +0x0d4 KernelApcDisable : Uint4B +0x0d8 UserAffinity : Uint4B +0x0dc SystemAffinityActive : UChar +0x0dd PowerState : UChar +0x0de NpxIrql : UChar +0x0df InitialNode : UChar +0x0e0 ServiceTable : Ptr32 Void +0x0e4 Queue : Ptr32 _KQUEUE +0x0e8 ApcQueueLock : Uint4B +0x0f0 Timer : _KTIMER +0x118 QueueListEntry : _LIST_ENTRY +0x120 SoftAffinity : Uint4B +0x124 Affinity : Uint4B +0x128 Preempted : UChar +0x129 ProcessReadyQueue : UChar +0x12a KernelStackResident : UChar +0x12b NextProcessor : UChar +0x12c CallbackStack : Ptr32 Void +0x130 Win32Thread : Ptr32 Void +0x134 TrapFrame : Ptr32 _KTRAP_FRAME +0x138 ApcStatePointer : [2] Ptr32 _KAPC_STATE +0x140 PreviousMode : Char +0x141 EnableStackSwap : UChar +0x142 LargeStack : UChar +0x143 ResourceIndex : UChar +0x144 KernelTime : Uint4B +0x148 UserTime : Uint4B +0x14c SavedApcState : _KAPC_STATE +0x164 Alertable : UChar +0x165 ApcStateIndex : UChar +0x166 ApcQueueable : UChar +0x167 AutoAlignment : UChar +0x168 StackBase : Ptr32 Void +0x16c SuspendApc : _KAPC +0x19c SuspendSemaphore : _KSEMAPHORE +0x1b0 ThreadListEntry : _LIST_ENTRY +0x1b8 FreezeCount : Char +0x1b9 SuspendCount : Char +0x1ba IdealProcessor : UChar +0x1bb DisableBoost : UChar
KTHREAD 是 ETHREAD前 0x1c0 字节的TCB属性。下面介绍 KTHREAD 部分属性:
+0x000 Header : _DISPATCHER_HEADER
和 KPROCESS 类似,开头是一个 Header,拥有此属性的内核对象可以“被等待”(WaitForSingleObject)
+0x018 InitialStack : Ptr32 Void
+0x01c StackLimit : Ptr32 Void
+0x028 KernelStack : Ptr32 Void
InitialStack 初始栈顶,也可以理解成ebp0
StackLimit 栈的大小
KernelStack 线程切换时,旧线程的esp0存到它的KernelStack,然后把新线程的KernelStack写到TSS
+0x020 Teb : Ptr32 Void
TEB,Thread Environment Block,线程环境块。
大小4KB,位于用户地址空间。
3环可以通过 FS:[0] 找到TEB
+0x02c DebugActive : UChar
是否处于调试状态
+0x034 ApcState : _KAPC_STATE
+0x0e8 ApcQueueLock : Uint4B
+0x138 ApcStatePointer : [2] Ptr32 _KAPC_STATE
+0x14c SavedApcState : _KAPC_STATE
APC相关属性。
+0x02d State : UChar
线程状态:就绪、等待、运行。
+0x06c BasePriority : Char
其初始值是所属进程的BasePriority值(KPROCESS->BasePriority),以后可以通过KeSetBasePriorityThread()函数重新设定
+0x070 WaitBlock : [4] _KWAIT_BLOCK
等待哪个对象(WaitForSingleObject)
+0x0e0 ServiceTable : Ptr32 Void
指向系统服务表基址
+0x134 TrapFrame
进0环时保存环境
+0x140 PreviousMode : Char
某些内核函数会判断程序是0环调用还是3环调用的
+0x1b0 ThreadListEntry : _LIST_ENTRY
双向链表,一个进程所有的线程都挂在一个链表中,挂的就是这个位置,有两个这样的链表
线程断链
这里跟进程断链差不多,可以看看hambaga师傅的博客