[英]Cannot cast struct pointer to PUCHAR
I'm testing a code (based in this reference ) and i'm receiving a error that says:我正在测试一个代码(基于this reference ),我收到一条错误消息:
'type cast': cannot convert from 'SYSTEM_SERVICE_TABLE' to 'PUCHAR'
“类型转换”:无法从“SYSTEM_SERVICE_TABLE”转换为“PUCHAR”
How can solve it?怎么解决?
Edition:版:
The goal is try find Shadow SSDT table address on Windows 10 32bit.目标是尝试在 Windows 10 32bit 上找到Shadow SSDT表地址。
#include <ntddk.h>
#define NTOSAPI __declspec(dllimport)
typedef struct tag_SYSTEM_SERVICE_TABLE {
PULONG ServiceTable;
PULONG CounterTable;
ULONG ServiceLimit;
PCHAR ArgumentTable;
} SYSTEM_SERVICE_TABLE, *PSYSTEM_SERVICE_TABLE, **PPSYSTEM_SERVICE_TABLE;
NTOSAPI SYSTEM_SERVICE_TABLE KeServiceDescriptorTable;
NTSTATUS DriverEntry(IN PDRIVER_OBJECT pDriverObject, IN PUNICODE_STRING RegistryPath) {
NTSTATUS NtStatus = STATUS_SUCCESS;
pDriverObject->DriverUnload = DriverUnload;
DbgPrint("DriverEntry()!\n");
PUCHAR p = NULL;
PSYSTEM_SERVICE_TABLE KeServiceDescriptorTableWIN32K = NULL;
for (p = (PUCHAR)KeServiceDescriptorTable - PAGE_SIZE; p < (PUCHAR)KeServiceDescriptorTable + PAGE_SIZE; p++)
{
if (p != (PUCHAR)KeServiceDescriptorTable)
{
if (memcmp(p, &KeServiceDescriptorTable, sizeof(SYSTEM_SERVICE_TABLE)) == 0)
{
KeServiceDescriptorTableWIN32K = (PSYSTEM_SERVICE_TABLE)(p + sizeof(SYSTEM_SERVICE_TABLE));
break;
}
}
}
return NtStatus;
}
Your title says "Cannot cast struct pointer to PUCHAR", but the code is not trying to cast a pointer , it is trying to cast the struct itself , which is why the compiler complains.您的标题说“无法将结构指针转换为 PUCHAR”,但代码并没有尝试转换指针,而是尝试转换结构本身,这就是编译器抱怨的原因。 You need to get the address of the struct and cast that instead, ie:
您需要获取结构的地址并将其转换为,即:
(PUCHAR)&KeServiceDescriptorTable
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