code_scanner.h

Go to the documentation of this file.

#pragma once
#include <windows.h>
#include <vector>
#include <fstream>
 
#include "module_scanner.h"
#include "pe_section.h"
#include "patch_list.h"
 
namespace pesieve {

    class CodeScanReport : public ModuleScanReport
    {
    public:
        typedef enum section_status {
            SECTION_SCAN_ERR = -1,
            SECTION_NOT_MODIFIED = 0,
            SECTION_PATCHED = 1,
            SECTION_UNPACKED = 2
        } t_section_status;
 
        CodeScanReport(HMODULE _module, size_t _moduleSize)
            : ModuleScanReport(_module, _moduleSize)
        {
        }
 
        size_t countSectionsWithStatus(const t_section_status neededStatus)
        {
            size_t counter = 0;
            std::map<DWORD, t_section_status>::iterator itr;
            for (itr = sectionToResult.begin(); itr != sectionToResult.end(); ++itr) {
                const t_section_status status = itr->second;
                if (status == neededStatus) {
                    counter++;
                }
            }
            return counter;
        }
 
        const virtual void fieldsToJSON(std::stringstream &outs, size_t level, const pesieve::t_json_level &jdetails)
        {
            const size_t inaccessibleCount = countInaccessibleSections();
            const size_t scannedCount = sectionToResult.size() - inaccessibleCount;
            ModuleScanReport::_toJSON(outs, level);
            if (sectionToResult.size() > 0) {
                outs << ",\n";
                OUT_PADDED(outs, level, "\"scanned_sections\" : ");
                outs << std::dec << scannedCount;
            }
            if (inaccessibleCount > 0) {
                outs << ",\n";
                OUT_PADDED(outs, level, "\"inaccessible_sections\" : ");
                outs << std::dec << inaccessibleCount;
            }
            const size_t unpacked = countUnpackedSections();
            if (unpacked > 0) {
                outs << ",\n";
                OUT_PADDED(outs, level, "\"unpacked_sections\" : ");
                outs << std::dec << unpacked;
            }
            if (patchesList.size() > 0) {
                outs << ",\n";
                OUT_PADDED(outs, level, "\"patches\" : ");
                outs << std::dec << patchesList.size();
 
                if (jdetails >= JSON_DETAILS) {
                    outs << ",\n";
                    const bool is_short = (jdetails < JSON_DETAILS2) ? true : false;
                    patchesList.toJSON(outs, level, is_short);
                }
            }
        }
 
        const virtual bool toJSON(std::stringstream &outs, size_t level, const pesieve::t_json_level &jdetails)
        {
            OUT_PADDED(outs, level, "\"code_scan\" : {\n");
            fieldsToJSON(outs, level + 1, jdetails);
            outs << "\n";
            OUT_PADDED(outs, level, "}");
            return true;
        }
 
        virtual ULONGLONG getRelocBase()
        {
            return this->relocBase;
        }
 
        size_t countUnpackedSections()
        {
            return countSectionsWithStatus(SECTION_UNPACKED);
        }
 
        size_t countInaccessibleSections()
        {
            return countSectionsWithStatus(SECTION_SCAN_ERR);
        }
 
        size_t generateTags(const std::string &reportPath);
 
        std::map<DWORD, t_section_status> sectionToResult;
        PatchList patchesList;
    };
 

    class CodeScanner : public ModuleScanner {
    public:
 
        CodeScanner(HANDLE hProc, ModuleData &moduleData, RemoteModuleData &remoteModData)
            : ModuleScanner(hProc, moduleData, remoteModData),
            isScanData(false), isScanInaccessible(false)
        {
        }
 
        virtual CodeScanReport* scanRemote();
 
        void setScanData(bool enable) { this->isScanData = enable; }
        void setScanInaccessible(bool enable) { this->isScanInaccessible = enable; }
 
    private:
 
        size_t collectExecutableSections(RemoteModuleData &remoteModData, std::map<size_t, PeSection*> &sections, CodeScanReport &my_report);
 
        void freeExecutableSections(std::map<size_t, PeSection*> &sections);
 
        bool postProcessScan(IN OUT CodeScanReport &report);
 
        t_scan_status scanUsingBase(IN ULONGLONG load_base, IN std::map<size_t, PeSection*> &remote_code, OUT std::map<DWORD, CodeScanReport::t_section_status> &sectionToResult, OUT PatchList &patchesList);
 
        CodeScanReport::t_section_status scanSection(PeSection &originalSec, PeSection &remoteSec, OUT PatchList &patchesList);
 
        bool clearIAT(PeSection &originalSec, PeSection &remoteSec);
 
        bool clearExports(PeSection &originalSec, PeSection &remoteSec);
 
        bool clearLoadConfig(PeSection &originalSec, PeSection &remoteSec);
 
        size_t collectPatches(DWORD section_rva, PBYTE orig_code, PBYTE patched_code, size_t code_size, OUT PatchList &patchesList);
 
        bool isScanData;
        bool isScanInaccessible;
    };
 
}; //namespace pesieve