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我试图在注入远程进程的dll中调用函数,我试图调用dll函数的exe代码如下:

#include "stdafx.h"
#include <windows.h>
#include <psapi.h>
#include <string>

using std::string;


void GetDebugPrivs()
{
    HANDLE hToken;
    LUID sedebugnameValue;
    TOKEN_PRIVILEGES tp;

    if (OpenProcessToken(GetCurrentProcess(), 
      TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
    {
       if ( !LookupPrivilegeValue( NULL, SE_DEBUG_NAME, &sedebugnameValue ) )
       {
        CloseHandle( hToken );
       }

        tp.PrivilegeCount = 1;
        tp.Privileges[0].Luid = sedebugnameValue;
        tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

        if ( !AdjustTokenPrivileges( hToken, 
         FALSE, &tp, sizeof(tp), NULL, NULL ) )
        {
           CloseHandle( hToken );
        }
        CloseHandle( hToken );
    }
}

HMODULE WINAPI GetRemoteModuleHandle(HANDLE hProcess, LPCSTR lpModuleName)
{
HMODULE* ModuleArray = NULL;
DWORD ModuleArraySize = 100;
DWORD NumModules = 0;
CHAR lpModuleNameCopy[MAX_PATH] = {0};
CHAR ModuleNameBuffer[MAX_PATH] = {0};

/* Make sure we didn't get a NULL pointer for the module name */
if(lpModuleName == NULL)
    goto GRMH_FAIL_JMP;

/* Convert lpModuleName to all lowercase so the comparison isn't case sensitive */
for (size_t i = 0; lpModuleName[i] != '\0'; ++i)
{
    if (lpModuleName[i] >= 'A' && lpModuleName[i] <= 'Z')
        lpModuleNameCopy[i] = lpModuleName[i] + 0x20; // 0x20 is the difference between uppercase and lowercase
    else
        lpModuleNameCopy[i] = lpModuleName[i];

    lpModuleNameCopy[i+1] = '\0';
}

/* Allocate memory to hold the module handles */
ModuleArray = new HMODULE[ModuleArraySize];

/* Check if the allocation failed */
if(ModuleArray == NULL)
    goto GRMH_FAIL_JMP;

/* Get handles to all the modules in the target process */
if(!::EnumProcessModulesEx(hProcess, ModuleArray,
    ModuleArraySize * sizeof(HMODULE), &NumModules, LIST_MODULES_ALL))
    goto GRMH_FAIL_JMP;

/* We want the number of modules not the number of bytes */
NumModules /= sizeof(HMODULE);

/* Did we allocate enough memory for all the module handles? */
if(NumModules > ModuleArraySize)
{
    delete[] ModuleArray; // Deallocate so we can try again
    ModuleArray = NULL; // Set it to NULL se we can be sure if the next try fails
    ModuleArray = new HMODULE[NumModules]; // Allocate the right amount of memory

    /* Check if the allocation failed */
    if(ModuleArray == NULL)
        goto GRMH_FAIL_JMP;

    ModuleArraySize = NumModules; // Update the size of the array

    /* Get handles to all the modules in the target process */
    if( !::EnumProcessModulesEx(hProcess, ModuleArray,
        ModuleArraySize * sizeof(HMODULE), &NumModules, LIST_MODULES_ALL) )
        goto GRMH_FAIL_JMP;

    /* We want the number of modules not the number of bytes */
    NumModules /= sizeof(HMODULE);
}

/* Iterate through all the modules and see if the names match the one we are looking for */
for(DWORD i = 0; i <= NumModules; ++i)
{
    /* Get the module's name */
    ::GetModuleBaseNameA(hProcess, ModuleArray[i],
        ModuleNameBuffer, sizeof(ModuleNameBuffer));

    /* Convert ModuleNameBuffer to all lowercase so the comparison isn't case sensitive */
    for (size_t j = 0; ModuleNameBuffer[j] != '\0'; ++j)
    {
        if (ModuleNameBuffer[j] >= 'A' && ModuleNameBuffer[j] <= 'Z')
            ModuleNameBuffer[j] += 0x20; // 0x20 is the difference between uppercase and lowercase
    }

    /* Does the name match? */
    if(strstr(ModuleNameBuffer, lpModuleNameCopy) != NULL)
    {
        /* Make a temporary variable to hold return value*/
        HMODULE TempReturn = ModuleArray[i];

        /* Give back that memory */
        delete[] ModuleArray;

        /* Success */
        return TempReturn;
    }

    /* Wrong module let's try the next... */
}


   GRMH_FAIL_JMP:

/* If we got to the point where we allocated memory we need to give it back */
if(ModuleArray != NULL)
    delete[] ModuleArray;

/* Failure... */
return NULL;
}

FARPROC WINAPI GetRemoteProcAddress (HANDLE hProcess, HMODULE hModule, LPCSTR lpProcName, UINT Ordinal, BOOL UseOrdinal)
{
BOOL Is64Bit = FALSE;
MODULEINFO RemoteModuleInfo = {0};
UINT_PTR RemoteModuleBaseVA = 0;
IMAGE_DOS_HEADER DosHeader = {0};
DWORD Signature = 0;
IMAGE_FILE_HEADER FileHeader = {0};
IMAGE_OPTIONAL_HEADER64 OptHeader64 = {0};
IMAGE_OPTIONAL_HEADER32 OptHeader32 = {0};
IMAGE_DATA_DIRECTORY ExportDirectory = {0};
IMAGE_EXPORT_DIRECTORY ExportTable = {0};
UINT_PTR ExportFunctionTableVA = 0;
UINT_PTR ExportNameTableVA = 0;
UINT_PTR ExportOrdinalTableVA = 0;
DWORD* ExportFunctionTable = NULL;
DWORD* ExportNameTable = NULL;
WORD* ExportOrdinalTable = NULL;

/* Temporary variables not used until much later but easier
/* to define here than in all the the places they are used */
CHAR TempChar;
BOOL Done = FALSE;

/* Check to make sure we didn't get a NULL pointer for the name unless we are searching by ordinal */
if(lpProcName == NULL && !UseOrdinal)
    goto GRPA_FAIL_JMP;

/* Get the base address of the remote module along with some other info we don't need */
if(!::GetModuleInformation(hProcess, hModule,&RemoteModuleInfo, sizeof(RemoteModuleInfo)))
    goto GRPA_FAIL_JMP;
RemoteModuleBaseVA  = (UINT_PTR)RemoteModuleInfo.lpBaseOfDll;

/* Read the DOS header and check it's magic number */
if(!::ReadProcessMemory(hProcess, (LPCVOID)RemoteModuleBaseVA, &DosHeader,
    sizeof(DosHeader), NULL) || DosHeader.e_magic != IMAGE_DOS_SIGNATURE)
    goto GRPA_FAIL_JMP;

/* Read and check the NT signature */
if(!::ReadProcessMemory(hProcess, (LPCVOID)(RemoteModuleBaseVA + DosHeader.e_lfanew),
    &Signature, sizeof(Signature), NULL) || Signature != IMAGE_NT_SIGNATURE)
    goto GRPA_FAIL_JMP;

/* Read the main header */
if(!::ReadProcessMemory(hProcess,
    (LPCVOID)(RemoteModuleBaseVA + DosHeader.e_lfanew + sizeof(Signature)),
    &FileHeader, sizeof(FileHeader), NULL))
    goto GRPA_FAIL_JMP;

/* Which type of optional header is the right size? */
if(FileHeader.SizeOfOptionalHeader == sizeof(OptHeader64))
    Is64Bit = TRUE;
else if(FileHeader.SizeOfOptionalHeader == sizeof(OptHeader32))
    Is64Bit = FALSE;
else
    goto GRPA_FAIL_JMP;

if(Is64Bit)
{
    /* Read the optional header and check it's magic number */
    if(!::ReadProcessMemory(hProcess,
        (LPCVOID)(RemoteModuleBaseVA + DosHeader.e_lfanew + sizeof(Signature) + sizeof(FileHeader)),
        &OptHeader64, FileHeader.SizeOfOptionalHeader, NULL)
        || OptHeader64.Magic != IMAGE_NT_OPTIONAL_HDR64_MAGIC)
        goto GRPA_FAIL_JMP;
}
else
{
    /* Read the optional header and check it's magic number */
    if(!::ReadProcessMemory(hProcess,
        (LPCVOID)(RemoteModuleBaseVA + DosHeader.e_lfanew + sizeof(Signature) + sizeof(FileHeader)),
        &OptHeader32, FileHeader.SizeOfOptionalHeader, NULL)
        || OptHeader32.Magic != IMAGE_NT_OPTIONAL_HDR32_MAGIC)
        goto GRPA_FAIL_JMP;
}

/* Make sure the remote module has an export directory and if it does save it's relative address and size */
if(Is64Bit && OptHeader64.NumberOfRvaAndSizes >= IMAGE_DIRECTORY_ENTRY_EXPORT + 1)
{
    ExportDirectory.VirtualAddress = (OptHeader64.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]).VirtualAddress;
    ExportDirectory.Size = (OptHeader64.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]).Size;
}
else if(OptHeader32.NumberOfRvaAndSizes >= IMAGE_DIRECTORY_ENTRY_EXPORT + 1)
{
    ExportDirectory.VirtualAddress = (OptHeader32.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]).VirtualAddress;
    ExportDirectory.Size = (OptHeader32.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]).Size;
}
else
    goto GRPA_FAIL_JMP;

/* Read the main export table */
if(!::ReadProcessMemory(hProcess, (LPCVOID)(RemoteModuleBaseVA + ExportDirectory.VirtualAddress),
    &ExportTable, sizeof(ExportTable), NULL))
    goto GRPA_FAIL_JMP;

/* Save the absolute address of the tables so we don't need to keep adding the base address */
ExportFunctionTableVA = RemoteModuleBaseVA + ExportTable.AddressOfFunctions;
ExportNameTableVA = RemoteModuleBaseVA + ExportTable.AddressOfNames;
ExportOrdinalTableVA = RemoteModuleBaseVA + ExportTable.AddressOfNameOrdinals;

/* Allocate memory for our copy of the tables */
ExportFunctionTable = new DWORD[ExportTable.NumberOfFunctions];
ExportNameTable     = new DWORD[ExportTable.NumberOfNames];
ExportOrdinalTable  = new WORD[ExportTable.NumberOfNames];

/* Check if the allocation failed */
if(ExportFunctionTable == NULL || ExportNameTable == NULL || ExportOrdinalTable == NULL)
    goto GRPA_FAIL_JMP;

/* Get a copy of the function table */
if(!::ReadProcessMemory(hProcess, (LPCVOID)ExportFunctionTableVA,
    ExportFunctionTable, ExportTable.NumberOfFunctions * sizeof(DWORD), NULL))
    goto GRPA_FAIL_JMP;

/* Get a copy of the name table */
if(!::ReadProcessMemory(hProcess, (LPCVOID)ExportNameTableVA,
    ExportNameTable, ExportTable.NumberOfNames * sizeof(DWORD), NULL))
    goto GRPA_FAIL_JMP;

/* Get a copy of the ordinal table */
if(!::ReadProcessMemory(hProcess, (LPCVOID)ExportOrdinalTableVA,
    ExportOrdinalTable, ExportTable.NumberOfNames * sizeof(WORD), NULL))
    goto GRPA_FAIL_JMP;

/* If we are searching for an ordinal we do that now */
if(UseOrdinal)
{
    /* NOTE:
    /* Microsoft's PE/COFF specification does NOT say we need to subtract the ordinal base
    /* from our ordinal but it seems to always give the wrong function if we don't */

    /* Make sure the ordinal is valid */
    if(Ordinal < ExportTable.Base || (Ordinal - ExportTable.Base) >= ExportTable.NumberOfFunctions)
        goto GRPA_FAIL_JMP;

    UINT FunctionTableIndex = Ordinal - ExportTable.Base;

    /* Check if the function is forwarded and if so get the real address*/
    if(ExportFunctionTable[FunctionTableIndex] >= ExportDirectory.VirtualAddress &&
        ExportFunctionTable[FunctionTableIndex] <= ExportDirectory.VirtualAddress + ExportDirectory.Size)
    {
        Done = FALSE;
        string TempForwardString;
        TempForwardString.clear(); // Empty the string so we can fill it with a new name

        /* Get the forwarder string one character at a time because we don't know how long it is */
        for(UINT_PTR i = 0; !Done; ++i)
        {
            /* Get next character */
            if(!::ReadProcessMemory(hProcess,
                (LPCVOID)(RemoteModuleBaseVA + ExportFunctionTable[FunctionTableIndex] + i),
                &TempChar, sizeof(TempChar), NULL))
                goto GRPA_FAIL_JMP;

            TempForwardString.push_back(TempChar); // Add it to the string

            /* If it's NUL we are done */
            if(TempChar == (CHAR)'\0')
                Done = TRUE;
        }

        /* Find the dot that seperates the module name and the function name/ordinal */
        size_t Dot = TempForwardString.find('.');
        if(Dot == string::npos)
            goto GRPA_FAIL_JMP;

        /* Temporary variables that hold parts of the forwarder string */
        string RealModuleName, RealFunctionId;
        RealModuleName = TempForwardString.substr(0, Dot - 1);
        RealFunctionId = TempForwardString.substr(Dot + 1, string::npos);

        HMODULE RealModule = GetRemoteModuleHandle(hProcess, RealModuleName.c_str());
        FARPROC TempReturn;// Make a temporary variable to hold return value 


        /* Figure out if the function was exported by name or by ordinal */
        if(RealFunctionId.at(0) == '#') // Exported by ordinal
        {
            UINT RealOrdinal = 0;
            RealFunctionId.erase(0, 1); // Remove '#' from string

            /* My version of atoi() because I was too lazy to use the real one... */
            for(size_t i = 0; i < RealFunctionId.size(); ++i)
            {
                if(RealFunctionId[i] >= '0' && RealFunctionId[i] <= '9')
                {
                    RealOrdinal *= 10;
                    RealOrdinal += RealFunctionId[i] - '0';
                }
                else
                    break;
            }

            /* Recursively call this function to get return value */
            TempReturn = GetRemoteProcAddress(hProcess, RealModule, NULL, RealOrdinal, TRUE);
        }
        else // Exported by name
        {
            /* Recursively call this function to get return value */
            TempReturn = GetRemoteProcAddress(hProcess, RealModule, RealFunctionId.c_str(), 0, FALSE);
        }

        /* Give back that memory */
        delete[] ExportFunctionTable;
        delete[] ExportNameTable;
        delete[] ExportOrdinalTable;

        /* Success!!! */
        return TempReturn;
    }
    else // Not Forwarded
    {

        /* Make a temporary variable to hold return value*/
        FARPROC TempReturn = (FARPROC)(RemoteModuleBaseVA + ExportFunctionTable[FunctionTableIndex]);

        /* Give back that memory */
        delete[] ExportFunctionTable;
        delete[] ExportNameTable;
        delete[] ExportOrdinalTable;

        /* Success!!! */
        return TempReturn;
    }
}

/* Iterate through all the names and see if they match the one we are looking for */
for(DWORD i = 0; i<ExportTable.NumberOfNames;i++)   {
    string TempFunctionName;

    Done = FALSE;// Reset for next name
    TempFunctionName.clear(); // Empty the string so we can fill it with a new name

    /* Get the function name one character at a time because we don't know how long it is */
    for(UINT_PTR j = 0; !Done; ++j)
    {
        /* Get next character */
        if(!::ReadProcessMemory(hProcess, (LPCVOID)(RemoteModuleBaseVA + ExportNameTable[i] + j),
            &TempChar, sizeof(TempChar), NULL))
            goto GRPA_FAIL_JMP;

        TempFunctionName.push_back(TempChar); // Add it to the string

        /* If it's NUL we are done */
        if(TempChar == (CHAR)'\0')
            Done = TRUE;
    }

    /* Does the name match? */
    if(TempFunctionName.find(lpProcName) != string::npos)
    {
        /* NOTE:
        /* Microsoft's PE/COFF specification says we need to subtract the ordinal base
        /*from the value in the ordinal table but that seems to always give the wrong function */

        /* Check if the function is forwarded and if so get the real address*/
        if(ExportFunctionTable[ExportOrdinalTable[i]] >= ExportDirectory.VirtualAddress &&
            ExportFunctionTable[ExportOrdinalTable[i]] <= ExportDirectory.VirtualAddress + ExportDirectory.Size)
        {
            Done = FALSE;
            string TempForwardString;
            TempForwardString.clear(); // Empty the string so we can fill it with a new name

            /* Get the forwarder string one character at a time because we don't know how long it is */
            for(UINT_PTR j = 0; !Done; ++j)
            {
                /* Get next character */
                if(!::ReadProcessMemory(hProcess,
                    (LPCVOID)(RemoteModuleBaseVA + ExportFunctionTable[i] + j),
                    &TempChar, sizeof(TempChar), NULL))
                    goto GRPA_FAIL_JMP;

                TempForwardString.push_back(TempChar); // Add it to the string

                /* If it's NUL we are done */
                if(TempChar == (CHAR)'\0')
                    Done = TRUE;
            }

            /* Find the dot that seperates the module name and the function name/ordinal */
            size_t Dot = TempForwardString.find('.');
            if(Dot == string::npos)
                goto GRPA_FAIL_JMP;

            /* Temporary variables that hold parts of the forwarder string */
            string RealModuleName, RealFunctionId;
            RealModuleName = TempForwardString.substr(0, Dot);
            RealFunctionId = TempForwardString.substr(Dot + 1, string::npos);

            HMODULE RealModule = GetRemoteModuleHandle(hProcess, RealModuleName.c_str());
            FARPROC TempReturn;// Make a temporary variable to hold return value 


            /* Figure out if the function was exported by name or by ordinal */
            if(RealFunctionId.at(0) == '#') // Exported by ordinal
            {
                UINT RealOrdinal = 0;
                RealFunctionId.erase(0, 1); // Remove '#' from string

                /* My version of atoi() because I was to lazy to use the real one... */
                for(size_t i = 0; i < RealFunctionId.size(); ++i)
                {
                    if(RealFunctionId[i] >= '0' && RealFunctionId[i] <= '9')
                    {
                        RealOrdinal *= 10;
                        RealOrdinal += RealFunctionId[i] - '0';
                    }
                    else
                        break;
                }

                /* Recursively call this function to get return value */
                TempReturn = GetRemoteProcAddress(hProcess, RealModule, NULL, RealOrdinal, TRUE);
            }
            else // Exported by name
            {
                /* Recursively call this function to get return value */
                TempReturn = GetRemoteProcAddress(hProcess, RealModule, RealFunctionId.c_str(), 0, FALSE);
            }

            /* Give back that memory */
            delete[] ExportFunctionTable;
            delete[] ExportNameTable;
            delete[] ExportOrdinalTable;

            /* Success!!! */
            return TempReturn;
        }
        else // Not Forwarded
        {

            /* Make a temporary variable to hold return value*/
            FARPROC TempReturn;

            /* NOTE:
            /* Microsoft's PE/COFF specification says we need to subtract the ordinal base
            /*from the value in the ordinal table but that seems to always give the wrong function */
            //TempReturn = (FARPROC)(RemoteModuleBaseVA + ExportFunctionTable[ExportOrdinalTable[i] - ExportTable.Base]);

            /* So we do it this way instead */
            TempReturn = (FARPROC)(RemoteModuleBaseVA + ExportFunctionTable[ExportOrdinalTable[i]]);

            /* Give back that memory */
            delete[] ExportFunctionTable;
            delete[] ExportNameTable;
            delete[] ExportOrdinalTable;

            /* Success!!! */
            return TempReturn;
        }
    }

    /* Wrong function let's try the next... */
}


 GRPA_FAIL_JMP:

/* If we got to the point where we allocated memory we need to give it back */
if(ExportFunctionTable != NULL)
    delete[] ExportFunctionTable;
if(ExportNameTable != NULL)
    delete[] ExportNameTable;
if(ExportOrdinalTable != NULL)
    delete[] ExportOrdinalTable;

/* Falure... */
return NULL;
}

typedef void (*MYPROC)();
int _tmain(int argc, _TCHAR* argv[])
{
//HINSTANCE hinstLib; 
MYPROC ProcAdd;
//hinstLib = LoadLibraryA("PawIrm_Client.dll");

GetDebugPrivs();
HANDLE hproc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, 2552);

HMODULE hwnd = GetRemoteModuleHandle(hproc, "PawIrm_Client.dll");

ProcAdd = (MYPROC)GetRemoteProcAddress(hproc, hwnd, "mypid", 0, FALSE);

if (NULL != ProcAdd) 
{
    (ProcAdd)(); // Here I am getting Unhandled exception at 0x623fb776 in PawIRM_Exe.exe: 0xC0000005: Access violation.
}

CloseHandle(hproc);
return 0;

}

在上面的 exe 中,我试图调用 dll 中存在的“mypid”函数,该函数被注入到远程进程中,但是在调用该函数时,我遇到了未处理的异常,请指导我的代码有什么问题。

下面的代码是我的 DLL:

#include "stdafx.h"
include  <stdlib.h>
#include "PawIrm_Client.h"

PAWIRM_CLIENT_API void mypid ()//exported function
{
DWORD PID = GetCurrentProcessId();
char arr[10] = {0};
itoa(PID, arr, 10);
MessageBoxA(NULL, arr, "PID", MB_OK);
}
4

1 回答 1

1

ProcAdd 的值不是您可以在当前进程中调用的函数。它是别人进程中的一个指针。在您的流程中,它只是您正在调用的一个数字,并且由于它没有在您的流程中映射,因此您的流程会爆炸。

于 2013-01-28T07:39:45.683 回答