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EAnalyEngine.cpp
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219 lines (181 loc) · 5.26 KB
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/*————————————————————————————
E-debug 为分析易语言结构体提供支持的分析引擎
————————————————————————————*/
#include "stdafx.h"
#include "E-Debug.h"
#include "MainWindow.h"
#include "EAnalyEngine.h"
extern CMainWindow *pMaindlg;
extern map<string, LIBMAP> m_LibMap;
EAnalysis *pEAnalysisEngine;
INT EAnalysis::MakeSureInValidSection(ULONG referaddr,ULONG virtualaddr){
int index = FindVirutalSection(referaddr); //取得当前参照区间的index
ULONG oaddr = V2O(virtualaddr, index);
if (FindOriginSection(oaddr) == -1) { //转换为实际地址后再判断
return AddSection(oaddr);
}
return index;
}
INT EAnalysis::FindVirutalSection(ULONG addr) { //备用
for (UINT i = 0;i < SectionMap.size();i++) {
if (addr >= (ULONG)SectionMap[i].SectionAddr && addr < ((ULONG)SectionMap[i].SectionAddr + SectionMap[i].dwSize)) {
return i;
}
}
return -1;
}
INT EAnalysis::FindOriginSection(ULONG addr) {
for (UINT i = 0;i < SectionMap.size();i++) {
if (addr >= SectionMap[i].dwBase && addr < (SectionMap[i].dwBase + SectionMap[i].dwSize)) {
return i;
}
}
return -1;
}
INT EAnalysis::UpdateSection(ULONG addr) {
INT index = FindOriginSection(addr);
t_memory* T_memory;
if (index != -1) { //已经拷贝过一次页面也要重新拷贝一次
VirtualFree(SectionMap[index].SectionAddr, 0, MEM_RELEASE);
T_memory = Findmemory(addr);
if (!T_memory) {
//pMaindlg->outputInfo("查询内存失败!");
return -1;
}
SectionMap[index].dwBase = T_memory->base;
SectionMap[index].dwSize = T_memory->size;
SectionMap[index].SectionAddr = (UCHAR *)VirtualAlloc(NULL, SectionMap[index].dwSize, MEM_COMMIT, PAGE_READWRITE);
if (!SectionMap[index].SectionAddr) {
pMaindlg->outputInfo("申请内存失败!");
return -1;
}
ULONG Rsize = Readmemory(SectionMap[index].SectionAddr, SectionMap[index].dwBase, SectionMap[index].dwSize, MM_RESILENT);
if (Rsize != SectionMap[index].dwSize) {
pMaindlg->outputInfo("读取内存大小不同！");
return -1;
}
return index;
}
return AddSection(addr);
}
INT EAnalysis::AddSection(ULONG addr) {
sectionAlloc addsection;
t_memory* T_memory;
T_memory = Findmemory(addr);
if (!T_memory) {
//pMaindlg->outputInfo("查询内存失败!");
return -1;
}
addsection.dwBase = T_memory->base;
addsection.dwSize = T_memory->size;
addsection.SectionAddr = (BYTE *)VirtualAlloc(NULL, addsection.dwSize, MEM_COMMIT, PAGE_READWRITE);
if (addsection.SectionAddr == NULL) {
pMaindlg->outputInfo("申请内存失败!");
return -1;
}
ULONG Rsize=Readmemory(addsection.SectionAddr, addsection.dwBase, addsection.dwSize, MM_RESILENT);
if (Rsize != addsection.dwSize) {
pMaindlg->outputInfo("读取内存大小不同！");
return -1;
}
SectionMap.push_back(addsection);
//pMaindlg->outputInfo("实际分析内存大小:%X", T_memory->size);
return SectionMap.size()-1;
}
EAnalysis::EAnalysis(ULONG dwVBase)
{
for (UINT n = 0;n < SectionMap.size();n++) {
VirtualFree(SectionMap[n].SectionAddr, 0, MEM_RELEASE);
}
m_LibMap.clear();
SectionMap.clear();
UpdateSection(dwVBase);
}
EAnalysis::~EAnalysis()
{
}
BOOL EAnalysis::EStaticLibInit() { //易语言静态编译 识别初始化
DWORD dwResult;
DWORD dwCalc;
BYTE SearchCode[17] = { 0x50,0x64,0x89,0x25,0x00,0x00,0x00,0x00,
0x81,0xEC,0xAC,0x01,0x00,0x00,0x53,0x56,0x57 };
dwResult = Search_Bin(SectionMap[0].SectionAddr, SearchCode, SectionMap[0].dwSize, sizeof(SearchCode));
if (dwResult == 0)
{
return FALSE;
}
dwCalc = dwResult + 0x26 + SectionMap[0].dwBase;
DWORD EntryAddr = GetPoint(O2V(dwCalc,0));
if (EntryAddr - SectionMap[0].dwBase > SectionMap[0].dwSize) //如果入口地址在另一个区段,则添加一份表
{
int index = UpdateSection(EntryAddr);
pEnteyInfo = (PEENTRYINFO)O2V(EntryAddr, index);
}
else {
pEnteyInfo = (PEENTRYINFO)O2V(EntryAddr, 0);
}
dwUsercodeStart = pEnteyInfo->dwUserCodeStart;
return TRUE;
}
BOOL EAnalysis::GetUserEntryPoint() {
BYTE data[21] = {
0x55, 0x8B, 0xEC, 0x51, 0x53, 0x56, 0x8B, 0xF1, 0x57, 0x8B, 0x4E, 0x68,
0x8D, 0x86, 0xD8, 0x00, 0x00, 0x00, 0x50, 0x51, 0xE8 };
DWORD dwResult;
DWORD dwStartEntry;
dwResult = Search_Bin(SectionMap[0].SectionAddr, data, SectionMap[0].dwSize, sizeof(data));
if (dwResult == 0)
{
return false;
}
dwStartEntry = dwResult + 0x37 + SectionMap[0].dwBase; //call addr
dwUsercodeEnd = GetPoint(O2V(dwStartEntry,0) + 1) + dwStartEntry + 5;
return true;
}
ULONG EAnalysis::O2V(ULONG dwOaddr, UINT index) //实际地址到虚拟地址
{
return dwOaddr + (ULONG)SectionMap[index].SectionAddr - SectionMap[index].dwBase;
}
ULONG EAnalysis::V2O(ULONG dwVaddr, UINT index) //虚拟地址到实际地址
{
return dwVaddr + (ULONG)SectionMap[index].dwBase - (ULONG)SectionMap[index].SectionAddr;
}
DWORD EAnalysis::GetPoint(DWORD dwAddr)
{
return *(DWORD*)dwAddr;
}
DWORD EAnalysis::GetOriginPoint(DWORD dwAddr,UINT index)
{
DWORD pDwData;
pDwData = GetPoint(O2V(dwAddr, index));
return pDwData;
}
DWORD EAnalysis::Search_BinEx(byte *pSrc, byte *pTrait, int nSrcLen, int nTraitLen) //精确版本,无模糊匹配
{
if (IsBadReadPtr(pSrc, 4) == TRUE)
{
return 0;
}
int i, j, k;
for (i = 0; i <= (nSrcLen - nTraitLen); i++)
{
if (pSrc[i] == pTrait[0])
{
k = i;
j = 0;
while (j < nTraitLen)
{
k++; j++;
if (pSrc[k] != pTrait[j])
{
break;
}
}
if (j == nTraitLen)
{
return i;
}
}
}
return 0;
}