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00 je nt!CmUnRegisterCallback+0x157 (fffff806`3a427297) Branch
*/
pAddress = SearchMemory(pCmUnRegisterCallback, (PVOID)((PUCHAR)pCmUnRegisterCallback + 0xFF), pSpecialData, ulSpecialDataSize);
if (NULL == pAddress)
{
return pCallbackListHead;
}
// 先获取偏移再计算地址
lOffset = *(PLONG)((PUCHAR)pAddress + lSpecialOffset);
pCallbackListHead = (PVOID)((PUCHAR)pAddress + lSpecialOffset + sizeof(LONG) + lOffset);
return pCallbackListHead;
}
// 注册表回调函数结构体定义
typedef struct _CM_NOTIFY_ENTRY
{
LIST_ENTRY ListEntryHead;
ULONG UnKnown1;
ULONG UnKnown2;
LARGE_INTEGER Cookie;
PVOID Context;
PVOID Function;
}CM_NOTIFY_ENTRY, *PCM_NOTIFY_ENTRY;
VOID UnDriver(PDRIVER_OBJECT Driver)
{
}
NTSTATUS DriverEntry(IN PDRIVER_OBJECT Driver, PUNICODE_STRING RegistryPath)
{
PVOID pCallbackListHeadAddress = NULL;
RTL_OSVERSIONINFOW osInfo = { 0 };
UCHAR pSpecialData[50] = { 0 };
ULONG ulSpecialDataSize = 0;
LONG lSpecialOffset = 0;
DbgPrint("hello lyshark.com \n");
// 查找 fffff806`3a4271b3 488d0d06eac3ff lea rcx,[nt!CallbackListHead (fffff806`3a065bc0)]
/*
lyshark.com>
nt!CmUnRegisterCallback+0x6b:
fffff806`3a4271ab 4533c0 xor r8d,r8d
fffff806`3a4271ae 488d542438 lea rdx,[rsp+38h]
fffff806`3a4271b3 488d0d06eac3ff lea rcx,[nt!CallbackListHead (fffff806`3a065bc0)]
fffff806`3a4271ba e855e2e2ff call nt!CmListGetNextElement (fffff806`3a255414)
fffff806`3a4271bf 488bf8 mov rdi,rax
fffff806`3a4271c2 4889442440 mov qword ptr [rsp+40h],rax
fffff806`3a4271c7 4885c0 test rax,rax
fffff806`3a4271ca 0f84c7000000 je nt!CmUnRegisterCallback+0x157 (fffff806`3a427297) Branch
*/
pSpecialData[0] = 0x48;
pSpecialData[1] = 0x8D;
pSpecialData[2] = 0x0D;
ulSpecialDataSize = 3;
// 根据特征码获取地址
pCallbackListHeadAddress = SearchCallbackListHead(pSpecialData, ulSpecialDataSize, lSpecialOffset);
DbgPrint("[LyShark.com] CallbackListHead => %p \n", pCallbackListHeadAddress);
// 遍历链表结构
ULONG i = 0;
PCM_NOTIFY_ENTRY pNotifyEntry = NULL;
if (NULL == pCallbackListHeadAddress)
{
return FALSE;
}
// 开始遍历双向链表
pNotifyEntry = (PCM_NOTIFY_ENTRY)pCallbackListHeadAddress;
do
{
// 判断pNotifyEntry地址是否有效
if (FALSE == MmIsAddressValid(pNotifyEntry))
{
break;
}
// 判断回调函数地址是否有效
if (MmIsAddressValid(pNotifyEntry->Function))
{
DbgPrint("[LyShark.com] 回调函数地址: 0x%p | 回调函数Cookie: 0x%I64X \n", pNotifyEntry->Function, pNotifyEntry->Cookie.QuadPart);
}
// 获取下一链表
pNotifyEntry = (PCM_NOTIFY_ENTRY)pNotifyEntry->ListEntryHead.Flink;
} while (pCallbackListHeadAddress != (PVOID)pNotifyEntry);
Driver->DriverUnload = UnDriver;
return STATUS_SUCCESS;
}
最终运行这个驱动程序，输出如下效果：
目前系统中有两个回调函数，这一点在第一张图片中也可以得到，枚举是正确的。
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