FS寄存器

FS寄存器指向当前活动线程的TEB结构(线程结构)
偏移  说明
000  指向SEH链指针
004  线程堆栈顶部
008  线程堆栈底部
00C  SubSystemTib
010  FiberData
014  ArbitraryUserPointer
018  FS段寄存器在内存中的镜像地址
020  进程PID
024  线程ID
02C  指向线程局部存储指针
030  PEB结构地址(进程结构)
034  上个错误号

fs:[30]->PEB
typedef struct _PEB {               // Size: 0x1D8
    000h    UCHAR           InheritedAddressSpace;
    001h    UCHAR           ReadImageFileExecOptions;
    002h    UCHAR           BeingDebugged;              //Debug运行标志
    003h    UCHAR           SpareBool;
    004h    HANDLE          Mutant;
    008h    HINSTANCE       ImageBaseAddress;           //程序加载的基地址
    00Ch    struct _PEB_LDR_DATA    *Ldr                //Ptr32 _PEB_LDR_DATA
    010h    struct _RTL_USER_PROCESS_PARAMETERS  *ProcessParameters;
    014h    ULONG           SubSystemData;
    018h    HANDLE          DefaultHeap;
    01Ch    KSPIN_LOCK      FastPebLock;
    020h    ULONG           FastPebLockRoutine;
    024h    ULONG           FastPebUnlockRoutine;
    028h    ULONG           EnvironmentUpdateCount;
    02Ch    ULONG           KernelCallbackTable;
    030h    LARGE_INTEGER   SystemReserved;
    038h    struct _PEB_FREE_BLOCK  *FreeList
    03Ch    ULONG           TlsExpansionCounter;
    040h    ULONG           TlsBitmap;
    044h    LARGE_INTEGER   TlsBitmapBits;
    04Ch    ULONG           ReadOnlySharedMemoryBase;
    050h    ULONG           ReadOnlySharedMemoryHeap;

 异常处理信息:

fs[0]->*ExceptionList

typedef struc _EXCEPTION_REGISTRATION
{
    struc EXCEPTION_REGISTRATION    *Prev;      //前一个_EXCEPTION_REGISTRATION结构
    DWORD                           Handler;    //异常处理过程地址
    struct scopetable_entry         *scopetable;
    int                             trylevel;
    int                             _ebp;
    PEXCEPTION_POINTERS             xpointers;
}
    EXCEPTION_REGISTRATION,
    *PEXCEPTION_REGISTRATION;
////////////////////////////////////////////////
typedef struct _EXCEPTION_POINTERS
{
    PEXCEPTION_RECORD   ExceptionRecord;        //指向一个EXCEPTION_RECORD结构
    PCONTEXT            ContextRecord;          //指向向一个CONTEXT结构
}
    EXCEPTION_POINTERS,
    *PEXCEPTION_POINTERS;
/////////////////////////////////////////////////
typedef struct _EXCEPTION_RECORD
{
  00h  DWORD                     ExceptionCode;      //异常事件码
  04h  DWORD                     ExceptionFlags;     //标志
  08h  struct _EXCEPTION_RECORD  *ExceptionRecord;   //下一个EXCEPTION_RECORD结构地址
  0ch  PVOID                     ExceptionAddress;   //异常发生的地址
  10h  DWORD                     NumberParameters;   //ExceptionInformation的dword数目
  14h  ULONG_PTR ExceptionInformation[EXCEPTION_MAXIMUM_PARAMETERS];
} 1ch
    EXCEPTION_RECORD;

    typedef     EXCEPTION_RECORD        *PEXCEPTION_RECORD;
    #define     EXCEPTION_MAXIMUM_PARAMETERS    15
/////////////////////////////////////////////////////////////////
typedef struct _CONTEXT {
    DWORD           ContextFlags    // -|               +00h
    DWORD           Dr0             //  |               +04h
    DWORD           Dr1             //  |               +08h
    DWORD           Dr2             //  >调试寄存器     +0Ch
    DWORD           Dr3             //  |               +10h
    DWORD           Dr6             //  |               +14h
    DWORD           Dr7             // -|               +18h

    FLOATING_SAVE_AREA FloatSave;   //浮点寄存器区      +1Ch~~~88h

    DWORD           SegGs           //-|                +8Ch
    DWORD           SegFs           // |\段寄存器       +90h
    DWORD           SegEs           // |/               +94h
    DWORD           SegDs           //-|                +98h

    DWORD           Edi             //________          +9Ch
    DWORD           Esi             // |  通用          +A0h
    DWORD           Ebx             // |   寄           +A4h
    DWORD           Edx             // |   存           +A8h
    DWORD           Ecx             // |   器           +ACh
    DWORD           Eax             //_|___组_          +B0h

    DWORD           Ebp             //++++++            +B4h
    DWORD           Eip             // |控制            +B8h
    DWORD           SegCs           // |寄存            +BCh
    DWORD           EFlag           // |器组            +C0h
    DWORD           Esp             // |                +C4h
    DWORD           SegSs           //++++++            +C8h

    BYTE    ExtendedRegisters[MAXIMUM_SUPPORTED_EXTENSION];
} CONTEXT;
    typedef     CONTEXT     *PCONTEXT;
    #define     MAXIMUM_SUPPORTED_EXTENSION     512

    054h    ULONG           ReadOnlyStaticServerData;
    058h    ULONG           AnsiCodePageData;
    05Ch    ULONG           OemCodePageData;
    060h    ULONG           UnicodeCaseTableData;
    064h    ULONG           NumberOfProcessors;
    068h    LARGE_INTEGER   NtGlobalFlag;               // Address of a local copy
    070h    LARGE_INTEGER   CriticalSectionTimeout;
    078h    ULONG           HeapSegmentReserve;
    07Ch    ULONG           HeapSegmentCommit;
    080h    ULONG           HeapDeCommitTotalFreeThreshold;
    084h    ULONG           HeapDeCommitFreeBlockThreshold;
    088h    ULONG           NumberOfHeaps;
    08Ch    ULONG           MaximumNumberOfHeaps;
    090h    ULONG           ProcessHeaps;
    094h    ULONG           GdiSharedHandleTable;
    098h    ULONG           ProcessStarterHelper;
    09Ch    ULONG           GdiDCAttributeList;
    0A0h    KSPIN_LOCK      LoaderLock;
    0A4h    ULONG           OSMajorVersion;
    0A8h    ULONG           OSMinorVersion;
    0ACh    USHORT          OSBuildNumber;
    0AEh    USHORT          OSCSDVersion;
    0B0h    ULONG           OSPlatformId;
    0B4h    ULONG           ImageSubsystem;
    0B8h    ULONG           ImageSubsystemMajorVersion;
    0BCh    ULONG           ImageSubsystemMinorVersion;
    0C0h    ULONG           ImageProcessAffinityMask;
    0C4h    ULONG           GdiHandleBuffer[0x22];
    14Ch    ULONG           PostProcessInitRoutine;
    150h    ULONG           TlsExpansionBitmap;
    154h    UCHAR           TlsExpansionBitmapBits[0x80];
    1D4h    ULONG           SessionId;
} PEB, *PPEB;

posted on 2012-02-20 08:46  梦想Sky  阅读(...)  评论(... 编辑 收藏

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