炒股pe值(如何从炒股软件导出pe)

2022-01-05 04:10 作者：i春秋论坛围观：次

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导出表概述

导出表一般多见于DLL和SYS文件，EXE在少部分情况下拥有导出表，导出表中存储了当前DLL可供调用的函数的地址、函数名称，导出表的地址存储在数据目录项的第一个结构中。

IMAGE_SECTION_HEADER[0]

typedef struct _IMAGE_DATA_DIRECTORY {DWORD   VirtualAddress;//导出表开始的地址 RVADWORD   Size;//导出表大小}IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY;

存储了导出表的地址(RVA)及其大小

导出表结构：

typedef struct _IMAGE_EXPORT_DIRECTORY {DWORD   Characteristics;    // 未使用DWORD   TimeDateStamp;                // 时间戳WORD    MajorVersion;                // 未使用WORD    MinorVersion;                // 未使用DWORD   Name;                                // 指向该导出表文件名字符串DWORD   Base;                                // 导出函数起始序号DWORD   NumberOfFunctions;        // 所有导出函数的个数DWORD   NumberOfNames;                // 以函数名字导出的函数个数DWORD   AddressOfFunctions;     // 导出函数地址表RVADWORD   AddressOfNames;         // 导出函数名称表RVADWORD   AddressOfNameOrdinals;  // 导出函数序号表RVA} IMAGE_EXPORT_DIRECTORY, *PIMAGE_EXPORT_DIRECTORY;

导出表中最重要的就是三张表，AddressOfFunctions、AddressOfNames、AddressOfNameOrdinals，分别存储了函数地址，函数名称，函数序号，这里有两种函数查找方式，分别是按照函数名称查找，还有按照序号查找。

我们在移动的时候，要注意RVA和FOA的转换，RVA是在内存中拉伸后的偏移，需要我们转换成文件中的偏移FOA才可以在文件中进行复制和修改。

导出函数名称表的移动是一个难点，导出函数名称表中存储了导出函数名称的偏移地址RVA，需要根据地址再进行访问函数名称。

移动导出表的步骤：

1、在PE文件中新增一个节，并且新增对应的节表；

2、复制：AddressOfFunction(size:NumberOfFunctions * 4) 到新增的节；

3、复制：AddressOfNameOrdinals(size:NumberOfNames * 2) 到新增的节中；

4、复制：AddressOfNames(szie:NumberOfNames * 4) 到新增的节中；

5、复制：AddressOfNames表中对应的所有地址，及其函数名，移动字符串时也需要注意大小\0结尾(每复制一个函数名就要计算偏移RVA添加到函数名称表的地址中)；

6、复制：导出表结构体到新增的节中；

7、修改导出表结构中的对应：AddressOfFunctions、AddressOfNameOrdinals、AddressOfNames

地址，其他的参数不影响运行；

8、修复目录项中的VirtualAddress，指向新的导出表的地址。

这里要梳理清楚在移动过程中的各个参数，在什么时候转换为FOA，什么时候转换为RVA。

定位导出表的地址时，需要将IMAGE_SECTION_HEADER[0].VirtualAddress的RVA->FOA，以便于在文件中定位导出表的地址。

在移动导出表的AddressOfFunction、AddressOfNameOrdinals、AddressOfNames时，需要将RVA->FOA以便于在文件中复制

在移动AddressOfNames中的地址指向的函数名字符串时，要将AddressOfNames中的地址RVA->FOA，并且在移动完后，修改AddressOfNames中存储的地址时，要FOA->RVA。

将导出表中的AddressOfFunctions、AddressOfNameOrdinals、AddressOfNames 地址修改为新复制的对应的地址时，要将新复制的对应的地址FOA->RVA。

修复数据目录项中的VirualAddress时，要将新复制的导出表的存储地址FOA->RVA

移动导出表

DWORD RVATOFOA(DWORD RVA,LPVOID pFileBuffer){  DWORD FOA = NULL;  PIMAGE_DOS_HEADER pDosHeader = NULL;  PIMAGE_NT_HEADERS pNtHeaders = NULL;  PIMAGE_FILE_HEADER pFileHeader = NULL;  PIMAGE_OPTIONAL_HEADER pOptionalHeader = NULL;  PIMAGE_SECTION_HEADER pSectionHeader = NULL;  pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;  pNtHeaders = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);  pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNtHeaders + 4);  pOptionalHeader = (PIMAGE_OPTIONAL_HEADER)((DWORD)pFileHeader + IMAGE_SIZEOF_FILE_HEADER);  pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionalHeader + pFileHeader->SizeOfOptionalHeader);  if(RVA <= pOptionalHeader->SizeOfHeaders)      return RVA;  for(;RVA > (pSectionHeader->VirtualAddress + pSectionHeader->Misc.VirtualSize);pSectionHeader++);//定位到所在节  FOA = RVA - pSectionHeader->VirtualAddress + pSectionHeader->PointerToRawData;  return FOA;}DWORD FOATORVA(DWORD FOA,LPVOID pFileBuffer){  DWORD RVA = NULL;  PIMAGE_DOS_HEADER pDosHeader = NULL;  PIMAGE_NT_HEADERS pNtHeaders = NULL;  PIMAGE_FILE_HEADER pFileHeader = NULL;  PIMAGE_OPTIONAL_HEADER pOptionalHeader = NULL;  PIMAGE_SECTION_HEADER pSectionHeader = NULL;  pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;  pNtHeaders = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);  pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNtHeaders + 4);  pOptionalHeader = (PIMAGE_OPTIONAL_HEADER)((DWORD)pFileHeader + IMAGE_SIZEOF_FILE_HEADER);  pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionalHeader + pFileHeader->SizeOfOptionalHeader);  if(FOA <= pOptionalHeader->SizeOfHeaders)      return FOA;  for(;FOA > (pSectionHeader->VirtualAddress + pSectionHeader->Misc.VirtualSize);pSectionHeader++);//定位到所在节  RVA = FOA - pSectionHeader->PointerToRawData + pSectionHeader->VirtualAddress ;  return RVA;}BOOL MoveExport(LPVOID pFileBuffer){  PIMAGE_DOS_HEADER pDosHeader = NULL;//DOS头  PIMAGE_NT_HEADERS pNtHeaders = NULL;//NT头  PIMAGE_FILE_HEADER pFileHeader = NULL;//标准PE头  PIMAGE_OPTIONAL_HEADER pOptionalHeader = NULL;//拓展PE头  PIMAGE_SECTION_HEADER pSectionHeader = NULL;//节表  PIMAGE_SECTION_HEADER pNewSec = NULL;//新节表结构  PIMAGE_EXPORT_DIRECTORY pExportDirectory = NULL; //导出表结构体  pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;  pNtHeaders = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);  pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNtHeaders + 4);  pOptionalHeader = (PIMAGE_OPTIONAL_HEADER)((DWORD)pFileHeader + IMAGE_SIZEOF_FILE_HEADER);  pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionalHeader + pFileHeader->SizeOfOptionalHeader);  //判断是否有足够的空间添加节表  if ((pOptionalHeader->SizeOfHeaders - ((DWORD)pSectionHeader - (DWORD)pFileBuffer + pFileHeader->NumberOfSections * 40)) < 80)  {      printf("空间不足");      return false;  }  //新增节表结构  pNewSec = (PIMAGE_SECTION_HEADER)(pSectionHeader + pFileHeader->NumberOfSections);  //修改节表内容  memcpy(pNewSec->Name,".export",8);//修改节表名  PIMAGE_SECTION_HEADER upSecHeader = (PIMAGE_SECTION_HEADER)(pSectionHeader + pFileHeader->NumberOfSections-1);  if(upSecHeader->Misc.VirtualSize > upSecHeader->SizeOfRawData)//修改节表VrituallAddress  {      pNewSec->VirtualAddress = upSecHeader->VirtualAddress + upSecHeader->Misc.VirtualSize;  }else{      pNewSec->VirtualAddress = upSecHeader->VirtualAddress + upSecHeader->SizeOfRawData;  }  pNewSec->SizeOfRawData = 0x1000;//新增的节区的大小  pNewSec->PointerToRawData = upSecHeader->PointerToRawData + upSecHeader->SizeOfRawData;//文件中的偏移  pNewSec->Characteristics = 0x60000020;//修改属性(可执行)  //在新增节表后增加40个字节的空白区  memset(pNewSec+1, 0, 40);  //修改NT头属性  pFileHeader->NumberOfSections += 1;//修改NumberOfSection数量  pOptionalHeader->SizeOfImage += 0x1000;//修改SizeOfImage大小  LPVOID NewBuffer = malloc(pOptionalHeader->SizeOfImage);//申请内存  memset(NewBuffer, 0, pOptionalHeader->SizeOfImage);//初始化内存  memcpy(NewBuffer, pFileBuffer,pOptionalHeader->SizeOfImage);//复制内存  //定位导出表  DWORD ExportFoa = NULL;//导出表FOA  PDWORD AddressOfNames = NULL;//导出函数名称表  LPVOID AddressOfFunctions = NULL;//导出函数地址表  PWORD AddressOfNameOrdinals = NULL;//导出函数序号表  DWORD AddressOfNamesFOA = NULL;//导出函数名称表FOA  DWORD AddressOfFunctionsFOA = NULL;//导出函数地址表FOA  DWORD AddressOfNameOrdinalsFOA = NULL;//导出函数序号表FOA  ExportFoa = RVATOFOA(pOptionalHeader->DataDirectory[0].VirtualAddress,pFileBuffer);//获取导出表的地址FOA  pExportDirectory = (PIMAGE_EXPORT_DIRECTORY)((DWORD)pFileBuffer + ExportFoa);//定位导出表  AddressOfNamesFOA = RVATOFOA(pExportDirectory->AddressOfNames,pFileBuffer);//获取导出函数名称表FOA  AddressOfFunctionsFOA = RVATOFOA(pExportDirectory->AddressOfFunctions,pFileBuffer);//获取到处函数地址表FOA  AddressOfNameOrdinalsFOA = RVATOFOA(pExportDirectory->AddressOfNameOrdinals,pFileBuffer);//获取导出函数序号表FOA  AddressOfNames = (PDWORD)((DWORD)pFileBuffer + AddressOfNamesFOA);//定位导出函数名称表  AddressOfFunctions = (LPVOID)((DWORD)pFileBuffer + AddressOfFunctionsFOA);//定位导出函数地址表  AddressOfNameOrdinals = (PWORD)((DWORD)pFileBuffer + AddressOfNameOrdinalsFOA);//定位导出函数序号表  ////复制AddressOfFunctions表  LPVOID pNewSecAddr = (LPVOID)((DWORD)NewBuffer+pNewSec->PointerToRawData);//定位新节表的地址  memcpy(pNewSecAddr,AddressOfFunctions,(pExportDirectory->NumberOfFunctions * 4));  //复制AddressOfNameOrdinals表  pNewSecAddr =(LPVOID)((DWORD)pNewSecAddr + (pExportDirectory->NumberOfFunctions * 4));  memcpy(pNewSecAddr,AddressOfNameOrdinals,(pExportDirectory->NumberOfNames * 2));  //复制AddressOfNames  pNewSecAddr =(LPVOID)((DWORD)pNewSecAddr + (pExportDirectory->NumberOfNames * 2));  PDWORD NameAddr = (PDWORD)pNewSecAddr;//这里存储一下函数地址名称表的地址，以便后边移动名称的时候修改相应地址  memcpy(pNewSecAddr,AddressOfNames,(pExportDirectory->NumberOfNames * 4));  //复制函数名称表中的名称  pNewSecAddr =(LPVOID)((DWORD)pNewSecAddr + (pExportDirectory->NumberOfNames * 4));  //每复制一个函数名就要计算偏移添加到名字表的地址里  DWORD NameAddOffset = (DWORD)pNewSecAddr - (DWORD)NewBuffer;//函数名称偏移  for(size_t i=0;i < pExportDirectory->NumberOfNames;i++,AddressOfNames++)  {      DWORD NameOffset = (DWORD)*AddressOfNames;      PCHAR FName = (PCHAR)((DWORD)pFileBuffer + NameOffset);      size_t l = 0;      *NameAddr = FOATORVA(NameAddOffset,NewBuffer);//复制函数名称偏移到地址中      NameAddr = (PDWORD)((DWORD)NameAddr + 0x4);      while(FName[l] != '\0')      {        l += 1;      }      NameAddOffset += (l+1);      memcpy(pNewSecAddr,FName,(l+1));//复制函数名字符串到地址中      pNewSecAddr =(LPVOID)((DWORD)pNewSecAddr + l+1);  }  //复制IMAGE_EXPORT_DIRECTORY结构体  memcpy(pNewSecAddr,pExportDirectory,pOptionalHeader->DataDirectory[0].Size);  PIMAGE_EXPORT_DIRECTORY pNewExportDirectory = (PIMAGE_EXPORT_DIRECTORY)pNewSecAddr;//地址赋值给新的导出表结构体  //修改新的导出表的AddressOfFunctions、AddressOfNameOrdinals、AddressOfNames地址，这里需要FOA->RVA  pNewExportDirectory->AddressOfFunctions = FOATORVA(pNewSec->PointerToRawData,NewBuffer);  pNewExportDirectory->AddressOfNameOrdinals = FOATORVA(pNewSec->PointerToRawData + pExportDirectory->NumberOfFunctions * 4,NewBuffer);  pNewExportDirectory->AddressOfNames = FOATORVA(pNewSec->PointerToRawData + pExportDirectory->NumberOfFunctions * 4 + pExportDirectory->NumberOfNames * 2,NewBuffer);  //修复目录项中的值，指向新的导出表的地址RVA  pDosHeader = (PIMAGE_DOS_HEADER)NewBuffer;  pNtHeaders = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);  pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNtHeaders + 4);  pOptionalHeader = (PIMAGE_OPTIONAL_HEADER)((DWORD)pFileHeader + IMAGE_SIZEOF_FILE_HEADER);  pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionalHeader + pFileHeader->SizeOfOptionalHeader);  pOptionalHeader->DataDirectory[0].VirtualAddress = FOATORVA((DWORD)pNewExportDirectory - (DWORD)NewBuffer,NewBuffer);  FILE* fp = fopen("C:\\testD.dll","wb+");  fwrite(NewBuffer,pOptionalHeader->SizeOfImage,1,fp);  fclose(fp);  return true;}

查看移动后的效果

用工具打开，可以看到节表添加成功。