我已经打开了一个进程:
HANDLE CreateDebuggedProcess(LPCSTR lpApplicationName)
{
STARTUPINFO startupInfo;
PROCESS_INFORMATION processInformation;
ZeroMemory(&startupInfo, sizeof(startupInfo));
startupInfo.cb = sizeof(startupInfo);
ZeroMemory(&processInformation, sizeof(processInformation));
if (!CreateProcessA(
lpApplicationName,
NULL,
NULL,
NULL,
FALSE,
DEBUG_PROCESS,
NULL,
NULL,
&startupInfo,
&processInformation
))
{
return INVALID_HANDLE_VALUE;
}
return processInformation.hProcess;
}
我正在等待第一个BreakPoint事件,然后试图打印指向的内存条。我对Get感到厌烦
void * getRip(DWORD threadId)
{
BOOL status = FALSE;
CONTEXT context = { 0 };
context.ContextFlags = CONTEXT_ALL;
HANDLE threadHandle = OpenThread(THREAD_GET_CONTEXT, FALSE, threadId);
if (NULL != threadHandle)
{
if(!GetThreadContext(threadHandle, &context))
{
status = FALSE;
return 0;
}
return (void *)context.Rip;
}
return 0;
}
,返回的值似乎正确。然后,我尝试调用ReadProcessMemory,但出现错误299:ReadProcessMemory: invalid argument (Only part of a ReadProcessMemory or WriteProcessMemory request was completed.)
。
BOOL queryMemory(HANDLE processHandle, void * address)
{
MEMORY_BASIC_INFORMATION memoryInformation = { 0 };
if (0 == VirtualQueryEx(processHandle, address, &memoryInformation, sizeof(memoryInformation)))
{
printf("failed :( Lasr error: %x\n", GetLastError());
return FALSE;
}
printf("AllocProtect: %x, state: %x, type: %x\n", memoryInformation.Protect
, memoryInformation.State
, memoryInformation.Type);
return TRUE;
}
返回AllocProtect: 1, state: 10000, type: 0
。这意味着我没有访问权限,但是那很奇怪,因为自创建该过程以来,我应该有权访问所有内容。
我在做什么错了?
答案 0 :(得分:0)
AllocProtect: 1, state: 10000
0x1作为保护常数= PAGE_NOACCESS
状态0x10000 = MEM_FREE
您无法读取NOACCESS或FREE的内存。它必须是MEM_COMMIT,不能是PAGE_NOACCESS。
我假设您的getRip()函数返回0,因为OpenThread或GetThreadContext失败。逐步检查代码,确认每一行都应正常工作,在每次调用WinAPI函数后检查GetLastError()的返回值以查找错误。
如果找不到错误,请确保以管理员身份运行,并且正在为与目标进程相同的体系结构进行编译。