一丶前言

因自己工作,可能后面会写ark工具.所以周六周日没事就逆向了一下进程回调数组. 虽然资料很多.但是自己动手自己明白.总比别人给的好.

所以记一下自己的分析思路以及逆向结果.

内核中 PsSetCreateProcessNotifyRoutine回调函数是用来设置进程监控的.

相应的还有一个Ex函数. ex函数没有逆向.简单的看了一下.这里说一下

进程回调的逆向把.

二丶逆向过程

1.windbg挂载 win7 32位.定位到函数反汇编位置

定位反汇编代码如下:

kd> uf PsSetCreateProcessNotifyRoutinent!PsSetCreateProcessNotifyRoutine:83fd87de 8bff            mov     edi,edi83fd87e0 55              push    ebp83fd87e1 8bec            mov     ebp,esp83fd87e3 6a00            push    0                      83fd87e5 ff750c          push    dword ptr [ebp+0Ch]   参数2   ---------> 是否删除83fd87e8 ff7508          push    dword ptr [ebp+8]     参数1   ---------> 回调函数地址83fd87eb e809000000      call    nt!PspSetCreateProcessNotifyRoutine (83fd87f9)83fd87f0 5d              pop     ebp83fd87f1 c20800          ret     8

可以看到里面调用的函数为: PspSetCreateProcessNotifyRoutine

总共三个参数

伪代码

PspSetCreateProcessNotifyRoutine(0,你自己的回调函数地址,是否删除标记)

而逆向Ex系列的函数.发现变得仅仅是第一个函数参数. 0变为1了.

2.逆向 PspSetCreateProcessNotifyRoutine

底层函数调用的它,那么就逆向它.

kd> uf PspSetCreateProcessNotifyRoutinent!PspSetCreateProcessNotifyRoutine:83fd87f9 8bff            mov     edi,edi83fd87fb 55              push    ebp83fd87fc 8bec            mov     ebp,esp83fd87fe 807d0c00        cmp     byte ptr [ebp+0Ch],0           //判断是设置回调还是清除回调.83fd8802 53              push    ebx83fd8803 56              push    esi                            //保存寄存器环境.83fd8804 57              push    edi83fd8805 0f84fa000000    je      nt!PspSetCreateProcessNotifyRoutine+0x10a (83fd8905)  是否删除回调 == 0 跳转.也就是设置回调. 删除回调走上边.====================>   删除回调走的位置nt!PspSetCreateProcessNotifyRoutine+0x12:83fd880b 648b3524010000  mov     esi,dword ptr fs:[124h]83fd8812 66ff8e84000000  dec     word ptr [esi+84h]83fd8819 33db            xor     ebx,ebx83fd881b c7450ce06cf883  mov     dword ptr [ebp+0Ch],offset nt!PspCreateProcessNotifyRoutine (83f86ce0)   //获得回调函数数组地址.nt!PspSetCreateProcessNotifyRoutine+0x29:83fd8822 ff750c          push    dword ptr [ebp+0Ch]                                                     //数组地址压栈.83fd8825 e88ea90d00      call    nt!ExReferenceCallBackBlock (840b31b8)                                  //逆向ExReferenceCallBackBlock83fd882a 8bf8            mov     edi,eax83fd882c 85ff            test    edi,edi83fd882e 7439            je      nt!PspSetCreateProcessNotifyRoutine+0x6e (83fd8869)nt!PspSetCreateProcessNotifyRoutine+0x37:83fd8830 8b4f08          mov     ecx,dword ptr [edi+8]83fd8833 e81b3cf2ff      call    nt!ExGetCallBackBlockRoutine (83efc453)83fd8838 3b4508          cmp     eax,dword ptr [ebp+8]83fd883b 7522            jne     nt!PspSetCreateProcessNotifyRoutine+0x64 (83fd885f)nt!PspSetCreateProcessNotifyRoutine+0x44:83fd883d 85c9            test    ecx,ecx83fd883f 7509            jne     nt!PspSetCreateProcessNotifyRoutine+0x4f (83fd884a)nt!PspSetCreateProcessNotifyRoutine+0x48:83fd8841 384d10          cmp     byte ptr [ebp+10h],cl83fd8844 7519            jne     nt!PspSetCreateProcessNotifyRoutine+0x64 (83fd885f)nt!PspSetCreateProcessNotifyRoutine+0x4d:83fd8846 eb08            jmp     nt!PspSetCreateProcessNotifyRoutine+0x55 (83fd8850)nt!PspSetCreateProcessNotifyRoutine+0x4f:83fd884a 807d1000        cmp     byte ptr [ebp+10h],083fd884e 740f            je      nt!PspSetCreateProcessNotifyRoutine+0x64 (83fd885f)nt!PspSetCreateProcessNotifyRoutine+0x55:83fd8850 8b450c          mov     eax,dword ptr [ebp+0Ch]83fd8853 57              push    edi83fd8854 33c9            xor     ecx,ecx83fd8856 e8abfeffff      call    nt!ExCompareExchangeCallBack (83fd8706)83fd885b 84c0            test    al,al83fd885d 7547            jne     nt!PspSetCreateProcessNotifyRoutine+0xab (83fd88a6)nt!PspSetCreateProcessNotifyRoutine+0x64:83fd885f 8b450c          mov     eax,dword ptr [ebp+0Ch]83fd8862 8bcf            mov     ecx,edi83fd8864 e883aa0d00      call    nt!ExDereferenceCallBackBlock (840b32ec)nt!PspSetCreateProcessNotifyRoutine+0x6e:83fd8869 83450c04        add     dword ptr [ebp+0Ch],483fd886d 43              inc     ebx83fd886e 83fb40          cmp     ebx,40h83fd8871 72af            jb      nt!PspSetCreateProcessNotifyRoutine+0x29 (83fd8822)nt!PspSetCreateProcessNotifyRoutine+0x78:83fd8873 66ff8684000000  inc     word ptr [esi+84h]83fd887a 0fb78684000000  movzx   eax,word ptr [esi+84h]83fd8881 6685c0          test    ax,ax83fd8884 7516            jne     nt!PspSetCreateProcessNotifyRoutine+0xa1 (83fd889c)nt!PspSetCreateProcessNotifyRoutine+0x8b:83fd8886 8d4640          lea     eax,[esi+40h]83fd8889 3900            cmp     dword ptr [eax],eax83fd888b 740f            je      nt!PspSetCreateProcessNotifyRoutine+0xa1 (83fd889c)nt!PspSetCreateProcessNotifyRoutine+0x92:83fd888d 6683be8600000000 cmp     word ptr [esi+86h],083fd8895 7505            jne     nt!PspSetCreateProcessNotifyRoutine+0xa1 (83fd889c)nt!PspSetCreateProcessNotifyRoutine+0x9c:83fd8897 e8fd3be9ff      call    nt!KiCheckForKernelApcDelivery (83e6c499)nt!PspSetCreateProcessNotifyRoutine+0xa1:83fd889c b87a0000c0      mov     eax,0C000007Ah83fd88a1 e9c5000000      jmp     nt!PspSetCreateProcessNotifyRoutine+0x170 (83fd896b)nt!PspSetCreateProcessNotifyRoutine+0xab:83fd88a6 83c9ff          or      ecx,0FFFFFFFFh83fd88a9 807d1000        cmp     byte ptr [ebp+10h],083fd88ad b8e46df883      mov     eax,offset nt!PspCreateProcessNotifyRoutineCount (83f86de4)83fd88b2 7405            je      nt!PspSetCreateProcessNotifyRoutine+0xbe (83fd88b9)nt!PspSetCreateProcessNotifyRoutine+0xb9:83fd88b4 b8e06df883      mov     eax,offset nt!PspCreateProcessNotifyRoutineExCount (83f86de0)nt!PspSetCreateProcessNotifyRoutine+0xbe:83fd88b9 f00fc108        lock xadd dword ptr [eax],ecx83fd88bd 8d049de06cf883  lea     eax,nt!PspCreateProcessNotifyRoutine (83f86ce0)[ebx*4]83fd88c4 8bcf            mov     ecx,edi83fd88c6 e821aa0d00      call    nt!ExDereferenceCallBackBlock (840b32ec)83fd88cb 66ff8684000000  inc     word ptr [esi+84h]83fd88d2 0fb78684000000  movzx   eax,word ptr [esi+84h]83fd88d9 6685c0          test    ax,ax83fd88dc 7516            jne     nt!PspSetCreateProcessNotifyRoutine+0xf9 (83fd88f4)nt!PspSetCreateProcessNotifyRoutine+0xe3:83fd88de 8d4640          lea     eax,[esi+40h]83fd88e1 3900            cmp     dword ptr [eax],eax83fd88e3 740f            je      nt!PspSetCreateProcessNotifyRoutine+0xf9 (83fd88f4)nt!PspSetCreateProcessNotifyRoutine+0xea:83fd88e5 6683be8600000000 cmp     word ptr [esi+86h],083fd88ed 7505            jne     nt!PspSetCreateProcessNotifyRoutine+0xf9 (83fd88f4)nt!PspSetCreateProcessNotifyRoutine+0xf4:83fd88ef e8a53be9ff      call    nt!KiCheckForKernelApcDelivery (83e6c499)nt!PspSetCreateProcessNotifyRoutine+0xf9:83fd88f4 8bcf            mov     ecx,edi83fd88f6 e890f41600      call    nt!ExWaitForCallBacks (84147d8b)83fd88fb 57              push    edi83fd88fc e814780e00      call    nt!SepFreeCapturedString (840c0115)nt!PspSetCreateProcessNotifyRoutine+0x106:83fd8901 33c0            xor     eax,eax83fd8903 eb66            jmp     nt!PspSetCreateProcessNotifyRoutine+0x170 (83fd896b)// 设置回调会走的路线.nt!PspSetCreateProcessNotifyRoutine+0x10a:83fd8905 807d1000        cmp     byte ptr [ebp+10h],0           //判断第三个参数是否为083fd8909 7413            je      nt!PspSetCreateProcessNotifyRoutine+0x123 (83fd891e)nt!PspSetCreateProcessNotifyRoutine+0x110:83fd890b ff7508          push    dword ptr [ebp+8]83fd890e e856affdff      call    nt!MmVerifyCallbackFunction (83fb3869)83fd8913 85c0            test    eax,eax83fd8915 7507            jne     nt!PspSetCreateProcessNotifyRoutine+0x123 (83fd891e)nt!PspSetCreateProcessNotifyRoutine+0x11c:83fd8917 b8220000c0      mov     eax,0C0000022h83fd891c eb4d            jmp     nt!PspSetCreateProcessNotifyRoutine+0x170 (83fd896b)//第三个参数是默认Push 0.会到这里.nt!PspSetCreateProcessNotifyRoutine+0x123:83fd891e 33c0            xor     eax,eax83fd8920 384510          cmp     byte ptr [ebp+10h],al83fd8923 0f95c0          setne   al                             //  == 0 则设置al位. 如果比较滞后 ==0 相等.(zf=1) 则设置al位0 .如果不相等则al = 1.83fd8926 50              push    eax                            083fd8927 ff7508          push    dword ptr [ebp+8]              回调函数地址.83fd892a e8a8fdffff      call    nt!ExAllocateCallBack (83fd86d7)83fd892f 8bd8            mov     ebx,eax83fd8931 85db            test    ebx,ebx                        //判断ebx结果是否是0. 不是0 跳转.83fd8933 7507            jne     nt!PspSetCreateProcessNotifyRoutine+0x141 (83fd893c)nt!PspSetCreateProcessNotifyRoutine+0x13a:83fd8935 b89a0000c0      mov     eax,0C000009Ah83fd893a eb2f            jmp     nt!PspSetCreateProcessNotifyRoutine+0x170 (83fd896b)nt!PspSetCreateProcessNotifyRoutine+0x141:                            83fd893c bee06cf883      mov     esi,offset nt!PspCreateProcessNotifyRoutine (83f86ce0) //不是0跳转到此位置. 获取数组.83fd8941 33ff            xor     edi,edint!PspSetCreateProcessNotifyRoutine+0x148:83fd8943 6a00            push    083fd8945 8bcb            mov     ecx,ebx                                        ecx = ExAllocateCallBack 返回值.83fd8947 8bc6            mov     eax,esi                                        eax = 数组83fd8949 e8b8fdffff      call    nt!ExCompareExchangeCallBack (83fd8706)        //应该是遍历数组.进行比较.设置回调.83fd894e 84c0            test    al,al83fd8950 7520            jne     nt!PspSetCreateProcessNotifyRoutine+0x177 (83fd8972)nt!PspSetCreateProcessNotifyRoutine+0x157:83fd8952 83c704          add     edi,483fd8955 83c604          add     esi,483fd8958 81ff00010000    cmp     edi,100h83fd895e 72e3            jb      nt!PspSetCreateProcessNotifyRoutine+0x148 (83fd8943)nt!PspSetCreateProcessNotifyRoutine+0x165:83fd8960 53              push    ebx83fd8961 e8af770e00      call    nt!SepFreeCapturedString (840c0115)83fd8966 b80d0000c0      mov     eax,0C000000Dhnt!PspSetCreateProcessNotifyRoutine+0x170:83fd896b 5f              pop     edi83fd896c 5e              pop     esi83fd896d 5b              pop     ebx83fd896e 5d              pop     ebp83fd896f c20c00          ret     0Chnt!PspSetCreateProcessNotifyRoutine+0x177:83fd8972 33c9            xor     ecx,ecx83fd8974 41              inc     ecx83fd8975 807d1000        cmp     byte ptr [ebp+10h],083fd8979 7525            jne     nt!PspSetCreateProcessNotifyRoutine+0x1a5 (83fd89a0)nt!PspSetCreateProcessNotifyRoutine+0x180:83fd897b b8e46df883      mov     eax,offset nt!PspCreateProcessNotifyRoutineCount (83f86de4)83fd8980 f00fc108        lock xadd dword ptr [eax],ecx83fd8984 a1786bf883      mov     eax,dword ptr [nt!PspNotifyEnableMask (83f86b78)]83fd8989 a802            test    al,283fd898b 0f8570ffffff    jne     nt!PspSetCreateProcessNotifyRoutine+0x106 (83fd8901)nt!PspSetCreateProcessNotifyRoutine+0x196:83fd8991 b8786bf883      mov     eax,offset nt!PspNotifyEnableMask (83f86b78)83fd8996 f00fba2801      lock bts dword ptr [eax],183fd899b e961ffffff      jmp     nt!PspSetCreateProcessNotifyRoutine+0x106 (83fd8901)nt!PspSetCreateProcessNotifyRoutine+0x1a5:83fd89a0 b8e06df883      mov     eax,offset nt!PspCreateProcessNotifyRoutineExCount (83f86de0)83fd89a5 f00fc108        lock xadd dword ptr [eax],ecx83fd89a9 a1786bf883      mov     eax,dword ptr [nt!PspNotifyEnableMask (83f86b78)]83fd89ae a804            test    al,483fd89b0 0f854bffffff    jne     nt!PspSetCreateProcessNotifyRoutine+0x106 (83fd8901)nt!PspSetCreateProcessNotifyRoutine+0x1bb:83fd89b6 b8786bf883      mov     eax,offset nt!PspNotifyEnableMask (83f86b78)83fd89bb f00fba2802      lock bts dword ptr [eax],283fd89c0 e93cffffff      jmp     nt!PspSetCreateProcessNotifyRoutine+0x106 (83fd8901)<===================================================================================>

通过上面可以看到获得的回调函数数组. 并且函数数组入栈. 那么就需要逆向一下新的函数了

首先看下回调函数数组里面的内容.

83f86ce0 = 回调函数数组

找到回调函数数组会发现这个值不是回调函数地址.

下面回调 ExReferenceCallBackBlock 传入回调函数地址.所以肯定有对其的操作

3.逆向 ExReferenceCallBackBlock

kd> uf ExReferenceCallBackBlocknt!ExReferenceCallBackBlock:840b31b8 8bff            mov     edi,edi840b31ba 55              push    ebp840b31bb 8bec            mov     ebp,esp840b31bd 8b5508          mov     edx,dword ptr [ebp+8]          edx = 数组地址840b31c0 8b0a            mov     ecx,dword ptr [edx]            ecx = 数组[0] 第一项.840b31c2 53              push    ebx840b31c3 56              push    esi840b31c4 57              push    edi840b31c5 6a07            push    7840b31c7 5b              pop     ebx                            ebx = 7840b31c8 84cb            test    bl,cl                          判断bl 跟 cl 肯定不等于 0 .840b31ca 7417            je      nt!ExReferenceCallBackBlock+0x2b (840b31e3)//                      bl cl 不会 = 0,所以走此位置.nt!ExReferenceCallBackBlock+0x14:840b31cc 8d41ff          lea     eax,[ecx-1]                    不相等的情况  eax = [ecx - 1] 的地址.   eax = &(数组[0]+1)的地址 例如数组内容为: 8d408c3f  现在成了 8d408c3E840b31cf 8bf0            mov     esi,eax                        esi = [ecx - 1]840b31d1 8bfa            mov     edi,edx                        edi = 数组地址840b31d3 8bc1            mov     eax,ecx                        eax = 数组[0]840b31d5 f00fb137        lock cmpxchg dword ptr [edi],esi       数组[0] = &([数组[0] +1] 的值.840b31d9 3bc1            cmp     eax,ecx                        数组[0] == 数组[0]840b31db 7406            je      nt!ExReferenceCallBackBlock+0x2b (840b31e3)nt!ExReferenceCallBackBlock+0x25:840b31dd 8bc8            mov     ecx,eax840b31df 84c3            test    bl,al840b31e1 75e9            jne     nt!ExReferenceCallBackBlock+0x14 (840b31cc)都相等会跳转此处.nt!ExReferenceCallBackBlock+0x2b:840b31e3 85c9            test    ecx,ecx                        ecx = &(数组[0] + 1)840b31e5 7507            jne     nt!ExReferenceCallBackBlock+0x36 (840b31ee) //大部分情况下会跳转.因为数组内容可能不为0nt!ExReferenceCallBackBlock+0x2f:840b31e7 33c0            xor     eax,eax840b31e9 e9f2000000      jmp     nt!ExReferenceCallBackBlock+0x122 (840b32e0)//跳转位置.nt!ExReferenceCallBackBlock+0x36:840b31ee 8bc1            mov     eax,ecx                       eax = 数组[0]840b31f0 23c3            and     eax,ebx                       eax = 数组[0] & 7;  eax = 7;840b31f2 0f859a000000    jne     nt!ExReferenceCallBackBlock+0xd4 (840b3292)nt!ExReferenceCallBackBlock+0x40:840b31f8 648b3524010000  mov     esi,dword ptr fs:[124h]840b31ff 66ff8e86000000  dec     word ptr [esi+86h]840b3206 6a11            push    11h840b3208 b9d807f883      mov     ecx,offset nt!ExpCallBackFlush (83f807d8)840b320d 5f              pop     edi840b320e 8bd9            mov     ebx,ecx840b3210 f00fb13b        lock cmpxchg dword ptr [ebx],edi840b3214 85c0            test    eax,eax840b3216 7408            je      nt!ExReferenceCallBackBlock+0x68 (840b3220)nt!ExReferenceCallBackBlock+0x60:840b3218 e80c56e4ff      call    nt!ExfAcquirePushLockShared (83ef8829)840b321d 8b5508          mov     edx,dword ptr [ebp+8]nt!ExReferenceCallBackBlock+0x68:840b3220 8b3a            mov     edi,dword ptr [edx]840b3222 83e7f8          and     edi,0FFFFFFF8h840b3225 7423            je      nt!ExReferenceCallBackBlock+0x92 (840b324a)nt!ExReferenceCallBackBlock+0x6f:840b3227 8b0f            mov     ecx,dword ptr [edi]840b3229 83e1fe          and     ecx,0FFFFFFFEh840b322c 8d4102          lea     eax,[ecx+2]840b322f 8bd0            mov     edx,eax840b3231 8bdf            mov     ebx,edi840b3233 8bc1            mov     eax,ecx840b3235 f00fb113        lock cmpxchg dword ptr [ebx],edx840b3239 3bc1            cmp     eax,ecx840b323b 740d            je      nt!ExReferenceCallBackBlock+0x92 (840b324a)nt!ExReferenceCallBackBlock+0x85:840b323d 8bcf            mov     ecx,edi840b323f e806a5e2ff      call    nt!ExfAcquireRundownProtection (83edd74a)840b3244 84c0            test    al,al840b3246 7502            jne     nt!ExReferenceCallBackBlock+0x92 (840b324a)nt!ExReferenceCallBackBlock+0x90:840b3248 33ff            xor     edi,edint!ExReferenceCallBackBlock+0x92:840b324a b9d807f883      mov     ecx,offset nt!ExpCallBackFlush (83f807d8)840b324f 6a11            push    11h840b3251 33d2            xor     edx,edx840b3253 8bd9            mov     ebx,ecx840b3255 58              pop     eax840b3256 f00fb113        lock cmpxchg dword ptr [ebx],edx840b325a 83f811          cmp     eax,11h840b325d 7405            je      nt!ExReferenceCallBackBlock+0xac (840b3264)nt!ExReferenceCallBackBlock+0xa7:840b325f e80a54e4ff      call    nt!ExfReleasePushLockShared (83ef866e)nt!ExReferenceCallBackBlock+0xac:840b3264 66ff8686000000  inc     word ptr [esi+86h]840b326b 0fb78686000000  movzx   eax,word ptr [esi+86h]840b3272 6685c0          test    ax,ax840b3275 750c            jne     nt!ExReferenceCallBackBlock+0xcb (840b3283)nt!ExReferenceCallBackBlock+0xbf:840b3277 83c640          add     esi,40h840b327a 3936            cmp     dword ptr [esi],esi840b327c 7405            je      nt!ExReferenceCallBackBlock+0xcb (840b3283)nt!ExReferenceCallBackBlock+0xc6:840b327e e81692dbff      call    nt!KiCheckForKernelApcDelivery (83e6c499)nt!ExReferenceCallBackBlock+0xcb:840b3283 85ff            test    edi,edi840b3285 0f845cffffff    je      nt!ExReferenceCallBackBlock+0x2f (840b31e7)nt!ExReferenceCallBackBlock+0xd3:840b328b eb51            jmp     nt!ExReferenceCallBackBlock+0x120 (840b32de)//跳转到此位置.nt!ExReferenceCallBackBlock+0xd4:840b3292 83e1f8          and     ecx,0FFFFFFF8h     ecx = 数组[0] & 0xFFFFFFF8 结果得出是一个地址. 数组里面的值已经不是以前的值了. 8d408c3f 变成了 8d408c3E840b3295 8bf9            mov     edi,ecx            结果给 edi保存840b3297 83f801          cmp     eax,1840b329a 7542            jne     nt!ExReferenceCallBackBlock+0x120 (840b32de)nt!ExReferenceCallBackBlock+0xde:840b329c 8bd3            mov     edx,ebx840b329e e8f1c4e1ff      call    nt!ExAcquireRundownProtectionEx (83ecf794)840b32a3 84c0            test    al,al840b32a5 7437            je      nt!ExReferenceCallBackBlock+0x120 (840b32de)nt!ExReferenceCallBackBlock+0xe9:840b32a7 8b4508          mov     eax,dword ptr [ebp+8]840b32aa 8b08            mov     ecx,dword ptr [eax]840b32ac 8bc1            mov     eax,ecx840b32ae eb1d            jmp     nt!ExReferenceCallBackBlock+0x10f (840b32cd)nt!ExReferenceCallBackBlock+0xf2:840b32b0 8bc1            mov     eax,ecx840b32b2 83e0f8          and     eax,0FFFFFFF8h840b32b5 3bf8            cmp     edi,eax840b32b7 751c            jne     nt!ExReferenceCallBackBlock+0x117 (840b32d5)nt!ExReferenceCallBackBlock+0xfb:840b32b9 8b7508          mov     esi,dword ptr [ebp+8]840b32bc 8d4107          lea     eax,[ecx+7]840b32bf 8bd0            mov     edx,eax840b32c1 8bc1            mov     eax,ecx840b32c3 f00fb116        lock cmpxchg dword ptr [esi],edx840b32c7 3bc1            cmp     eax,ecx840b32c9 7413            je      nt!ExReferenceCallBackBlock+0x120 (840b32de)nt!ExReferenceCallBackBlock+0x10d:840b32cb 8bc8            mov     ecx,eaxnt!ExReferenceCallBackBlock+0x10f:840b32cd 23c3            and     eax,ebx840b32cf 03c3            add     eax,ebx840b32d1 3bc3            cmp     eax,ebx840b32d3 76db            jbe     nt!ExReferenceCallBackBlock+0xf2 (840b32b0)nt!ExReferenceCallBackBlock+0x117:840b32d5 8bd3            mov     edx,ebx840b32d7 8bcf            mov     ecx,edi840b32d9 e8f96cdcff      call    nt!ExReleaseRundownProtectionEx (83e79fd7)//eax = 7 不是1.所以直接跳转到结束位置nt!ExReferenceCallBackBlock+0x120:840b32de 8bc7            mov     eax,edi                结果给eax.进行返回.nt!ExReferenceCallBackBlock+0x122:840b32e0 5f              pop     edi840b32e1 5e              pop     esi840b32e2 5b              pop     ebx840b32e3 5d              pop     ebp840b32e4 c20400          ret     4

通过逆向次函数可以得知. 函数数组[0]的内容被修改了. 修改为 -1的值. 如上面看到的数组的内容为: