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Form1.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Security.AccessControl;
using System.Threading;
namespace DllValidator
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void ALine(bool isSuppressWarnings = true)
{
if (!isSuppressWarnings || (isSuppressWarnings && !OnlyErrorsAndWarnings.Checked))
sb.AppendLine("\\par");
}
void AL(string rtfString, string prePrefix = "", string prefix = " + ")
{
if (!OnlyErrorsAndWarnings.Checked)
sb.AppendLine(prePrefix + prefix + rtfString + "\\par");
}
void ALi(string rtfString, string prePrefix = "", string prefix = " ")
{
AL(rtfString, prePrefix, prefix + " i ");
}
void Alert(string rtfString, string prePrefix = "")
{
sb.AppendLine(prePrefix + "{\\b \\cf3 - " + rtfString + "}\\par");
errorCount++;
}
void ALW(string rtfString, string prePrefix = "")
{
sb.AppendLine(prePrefix + "{\\cf4 | " + rtfString + "}\\par");
}
// string VRP = "Vinogradov Sergey Vasilievich";
static readonly string VRPR = "hciveilisaVyegreSvodargoniV";
static readonly string VRPS = "L_de]hWZelI[h][oLWi_b_[l_Y^";
static string VRPT;
static Form1()
{
var sb = new StringBuilder();
var sb2 = new StringBuilder();
for (int i = 0; i < VRPS.Length; i++)
sb.Append((char) ((byte)VRPS[i] + 10));
for (int i = VRPS.Length - 1; i >= 0; i--)
sb2.Append(VRPR[i]);
sb .Insert(10, " ");
sb .Insert(17, " ");
sb2.Insert(10, " ");
sb2.Insert(17, " ");
VRPT = sb.ToString();
if (VRPT != sb2.ToString() || VRPT.Length != 29)
VRPT = VRPT + " (?" + sb2.ToString() + "?)";
}
SortedList<int, StringBuilder> sbs = new SortedList<int, StringBuilder>(Environment.ProcessorCount * 2);
StringBuilder sb
{
get
{
lock (sbs)
{
if (!sbs.ContainsKey(Thread.CurrentThread.ManagedThreadId))
sbs.Add(Thread.CurrentThread.ManagedThreadId, new StringBuilder());
return sbs[Thread.CurrentThread.ManagedThreadId];
}
}
}
SortedList<int, int> _errorCount = new SortedList<int, int>(Environment.ProcessorCount * 2);
int errorCount
{
get
{
lock (_errorCount)
{
if (!_errorCount.ContainsKey(Thread.CurrentThread.ManagedThreadId))
_errorCount.Add(Thread.CurrentThread.ManagedThreadId, 0);
return _errorCount[Thread.CurrentThread.ManagedThreadId];
}
}
set
{
lock (_errorCount)
{
if (!_errorCount.ContainsKey(Thread.CurrentThread.ManagedThreadId))
_errorCount.Add(Thread.CurrentThread.ManagedThreadId, 0);
_errorCount[Thread.CurrentThread.ManagedThreadId] = value;
}
}
}
StringBuilder global_sb = new StringBuilder();
volatile int filesCheckedCount = 0;
List<string> filesToChecked = new List<string>();
object mainSync = new object();
volatile int syncCounter = 0;
private void button1_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() != System.Windows.Forms.DialogResult.OK)
return;
button2.Enabled = true;
result.Clear();
global_sb.Clear();
ext.Clear();
filesToChecked.Clear();
progressBar1.Value = 0;
filesCheckedCount = 0;
Application.DoEvents();
global_sb.AppendLine("{\\rtf1 \\ansicpg" + Encoding.Default.CodePage.ToString("D4"));
global_sb.AppendLine("{\\colortbl;\\red0\\green0\\blue0;\\red255\\green255\\blue255;\\red160\\green0\\blue0;\\red128\\green80\\blue0;\\red0\\green128\\blue0;\\red80\\green80\\blue80;\\red0\\green0\\blue128;}");
global_sb.AppendLine("{\\cf6");
global_sb.AppendLine("PE-validator by " + VRPT + "\\par");
global_sb.AppendLine("see PE file specification in http://msdn.microsoft.com/en-us/windows/hardware/gg463119.aspx and http://msdn.microsoft.com/en-us/library/ms809762.aspx");
global_sb.AppendLine("\\par addresses prefix in program output: fp - file pointer, rva - relative image address when load in memory, va - virtual address with image base address");
global_sb.AppendLine("\\par + - correct file fact, - - incorrect file fact, | - warning, is partially correct or is not standard, i - information");
global_sb.AppendLine("}");
terminate = false;
if (!AllDirectoriesFiles.Checked)
{
filesToChecked.AddRange(openFileDialog1.FileNames);
}
else
{
// var FileNames = Directory.EnumerateFiles(Path.GetDirectoryName(openFileDialog1.FileName));
var wi = WindowsIdentity.GetCurrent().User.ToString().ToLowerInvariant();
var wig = WindowsIdentity.GetCurrent().Groups;
var Dir = new DirectoryInfo(Path.GetDirectoryName(openFileDialog1.FileName));
DirectoryAllChecking(Dir, wi, wig);
}
progressBar1.Maximum = filesToChecked.Count + 2;
Application.DoEvents();
foreach (var FileName in filesToChecked)
{
if (onlyPE.Checked && !isPE_Extension(FileName))
{
lock (mainSync)
{
filesCheckedCount++;
}
continue;
}
lock (mainSync)
{
syncCounter++;
}
ThreadPool.QueueUserWorkItem
(
delegate
{
try
{
checkSingleFileWithReadCheck(FileName);
}
finally
{
lock (mainSync)
{
syncCounter--;
Monitor.Pulse(mainSync);
}
}
}
);
while (syncCounter > Environment.ProcessorCount)
lock (mainSync)
{
Monitor.Wait(mainSync);
progressBar1.Value = filesCheckedCount + 1;
progressBar1.Value = filesCheckedCount;
progressBar1.Refresh();
Application.DoEvents();
}
lock (mainSync)
{
progressBar1.Value = filesCheckedCount + 1;
progressBar1.Value = filesCheckedCount;
}
progressBar1.Refresh();
Application.DoEvents();
if (terminate)
{
break;
}
}
while (syncCounter > 0)
lock (mainSync)
{
Monitor.Wait(mainSync, 500);
progressBar1.Value = filesCheckedCount + 1;
progressBar1.Value = filesCheckedCount;
progressBar1.Refresh();
Application.DoEvents();
}
progressBar1.Value = filesCheckedCount + 1;
progressBar1.Value = filesCheckedCount;
progressBar1.Refresh();
Application.DoEvents();
if (terminate)
{
global_sb.AppendLine("\\par \\par cf3 checking terminated \\par \\par");
}
progressBar1.Value = filesCheckedCount + 2;
progressBar1.Value = filesCheckedCount + 1;
progressBar1.Refresh();
Application.DoEvents();
if (AllDirectoriesFiles.Checked || openFileDialog1.FileNames.Length > 1)
{
global_sb.AppendLine("\\par\\par File checked: " + filesCheckedCount);
global_sb.AppendLine("\\par\\par File with extensions has been checked successed: ");
foreach (var extension in ext)
{
global_sb.Append(extension.Key + " ");
}
global_sb.AppendLine("\\par\\par Last scan result in 'lastCheck.rtf' in DLLValidator directory");
}
button2.Enabled = false;
global_sb.AppendLine("\\par}");
string resultStr = global_sb.ToString();
File.WriteAllText("lastCheck.rtf", resultStr);
progressBar1.Value = filesCheckedCount + 2;
progressBar1.Refresh();
Application.DoEvents();
if (terminate && resultStr.Length > 64 * 1024)
result.Text = "Check process have been terminated. Last scan result is large and have been saved in 'lastCheck.rtf' in DLLValidator directory";
else
result.Rtf = resultStr;
progressBar1.Value = 0;
}
private static bool isPE_Extension(string FileName)
{
return ".acm.amd64.ax.com.cpl.css_x86.dat.dll.dll_amd64.dll_fxcop.dll_gac.dll_x86.dll1.dll2.dll5.dll6.drv.ds.efi.exe.exe_0001.exe_amd64.exe_x86.exe1.flt.flt1.html_x86.iec.ime.lrc.msstyles.mui.ocx.olb.rll.rs.scr.sys.tlb.tmp.tsp.x86"
.Contains(Path.GetExtension(FileName).ToLowerInvariant());
}
private void DirectoryAllChecking(DirectoryInfo Dir, string wi, IdentityReferenceCollection wig)
{
if (terminate)
{
return;
}
var DirNames = Dir.GetDirectories();
var FileNames = Dir.GetFiles();
foreach (var file in FileNames)
{
if (terminate)
{
return;
}
if (onlyPE.Checked && !isPE_Extension(file.FullName))
continue;
filesToChecked.Add(file.FullName);
}
foreach (var dir in DirNames)
{
if (terminate)
{
return;
}
try
{
var di = new DirectoryInfo(dir.FullName).GetAccessControl();
var dss = di.GetAccessRules(true, true, typeof(SecurityIdentifier));
var allowed = 0;
for (int i = 0; i < dss.Count; i++)
{
var s = dss[i] as FileSystemAccessRule;
if (s == null)
continue;
if (wi != s.IdentityReference.Value.ToLowerInvariant() && !wig.Contains(s.IdentityReference))
continue;
if (s.FileSystemRights == FileSystemRights.ListDirectory && s.AccessControlType == AccessControlType.Allow)
{
allowed = 1;
break;
}
else
if (s.FileSystemRights == FileSystemRights.ListDirectory && s.AccessControlType == AccessControlType.Deny)
{
allowed = -1;
break;
}
}
if (allowed < 0)
global_sb.AppendLine("\\par directory " + dir.FullName.Replace("\\", "\\\\") + " skipped as access not allowed\\par");
else
DirectoryAllChecking(dir, wi, wig);
}
catch (Exception ex)
{
global_sb.AppendLine("\\par directory " + dir.FullName.Replace("\\", "\\\\") + " skipped as raise error on checking " + ex.Message.Replace("\\", "\\\\") + "\\par");
}
}
}
SortedList<string, int> ext = new SortedList<string,int>(16);
private void checkSingleFileWithReadCheck(string FileName)
{
try
{
var hFile = CreateFile(FileName, 0x80000000, 0x00000001, 0, 3, 0x80, 0);
CloseHandle(hFile);
if (hFile != 0)
{
checkPEFile(FileName);
}
else
sb.AppendLine("file " + FileName + " skipped with read system error " + GetLastError());
}
catch (Exception ex)
{
sb.AppendLine("file " + FileName + " raise error on checking " + ex.Message);
}
lock (mainSync)
filesCheckedCount++;
}
// ---------------------------------------------------------------------------------------------------------------------------------------------------------
// ----------------------------------------------------- File checking -------------------------------------------------------------------------------------
// ---------------------------------------------------------------------------------------------------------------------------------------------------------
private bool checkPEFile(string FileName)
{
sb.Clear();
baseAddresses.Clear();
baseAddressesOfDirectory.Clear();
errorCount = 0;
vars.DllName = null;
vars.rvaExportDirectory = 0;
vars.rvaImportDirectory = 0;
vars.rvaResDirectory = 0;
vars.rvaCLRDirectory = 0;
vars.rvaRelocationDirectory = 0;
vars.rvaExportDirectoryS = 0;
vars.rvaImportDirectoryS = 0;
vars.rvaResDirectoryS = 0;
vars.rvaCLRDirectoryS = 0;
vars.rvaRelocationDirectoryS = 0;
vars.SizeOfHeadersAdd = 0;
vars.isDelayedImportDeclared = false;
var fileContent = File.ReadAllBytes(FileName);
sb.AppendLine("\\par \\par checking file " + FileName.Replace("\\", "\\\\"));
sb.AppendLine("\\par {RESULT_CHECKING}\\par");
sb.AppendLine("\\par \\par");
try
{
if (fileContent.LongLength < 1024)
{
ALW(" - File length < 1024 bytes");
goto EndOfValidate;
}
AL("File length >= 1024 bytes. " + this.A16(fileContent.LongLength));
if (fileContent[0] != (byte)'M' || fileContent[1] != (byte)'Z')
{
Alert("MZ signature not found");
goto EndOfValidate;
}
AL("MZ signature found (do not check wether correct MZ-file)");
ushort a;
ByteToShort(out a, fileContent, 0x18);
if (a != 0x40)
ALW("fp 0x40 do have not in fp 0x18 in MZ stub (have not in PE file specification)");
AL("fp 0x40 do have in fp 0x18 in MZ stub (have not in PE file specification)");
long fp = (long)GetInt(fileContent, 0x3c);
if (fp + 3 >= fileContent.LongLength)
{
Alert("fp 0x3c > file length - 3");
goto EndOfValidate;
}
AL("fp 0x3c contains address for PE signature: " + A16S(fp));
vars.addressOfPESignature = fp;
if (fileContent[fp] != (byte)'P' || fileContent[fp + 1] != (byte)'E' || fileContent[fp + 2] != 0 || fileContent[fp + 3] != 0)
{
Alert("PE signature not found");
goto EndOfValidate;
}
AL("PE signature found");
fp += 4;
var machine = GetShort(fileContent, fp);
if (machine != 0x8664 && machine != 0x14c)
Alert("Unknown machine (may be correct, if not x64 or x86): " + A16(machine));
ALi("machine " + A16(machine) + " (0x8664 - AMD64, 0x14c - Intel x86 and compatible, 0x200 - Intel Itanium)");
fp += 2;
vars.sectionCount = GetShort(fileContent, fp); // NumberOfSections
ALi("section count " + A16(vars.sectionCount));
fp += 2;
var fileTimeStamp = GetInt(fileContent, fp);
ALi("file creation time " + printDateTimeString(fileTimeStamp));
fp += 4;
fp += 8;
vars.sizeOfOptionalHeader = GetShort(fileContent, fp);
ALi("optional header size " + A16(vars.sizeOfOptionalHeader));
fp += 2;
vars.fileCharacteristics = GetShort(fileContent, fp);
printFileCharacteristics(vars.fileCharacteristics);
fp += 2;
vars.optionalHeaderOffset = (uint) fp;
var PE_Magic = GetShort(fileContent, fp);
if (PE_Magic == 0x020b)
{
vars.PE32Format = false;
AL("PE Magic number of file in Optional Header is correct. {\\b \\cf7 PE32+ (64 bit) format file. " + (vars.isDLL ? " Is dll" : "Is exe") + "}");
}
else
if (PE_Magic == 0x010b)
{
vars.PE32Format = true;
AL("PE Magic number of file in Optional Header is correct. {\\b \\cf7 PE32 (32 bit) format file. " + (vars.isDLL ? " Is dll" : "Is exe") + "}");
}
else
{
Alert("PE Magic number of file in Optional Header is incorrect: " + PE_Magic);
goto EndOfValidate;
}
fp += 2;
// Alert(A16(fp - vars.addressOfPESignature));
vars.SizeOfImage = ByteToSizedInteger(fileContent, vars.addressOfPESignature + 0x50, 4);
if (vars.PE32Format)
{
if (vars.sizeOfOptionalHeader < 0x60)
{
Alert("Optional header size is incorrect (very small)");
goto EndOfValidate;
}
}
else
if (vars.sizeOfOptionalHeader < 0x70)
{
Alert("Optional header size is incorrect (very small)");
goto EndOfValidate;
}
AL("Optional header size is not very small (minimum 0x60 for PE32 or 0x70 for PE32+)");
var majLinkerVersion = fileContent[fp++];
var minLinkerVersion = fileContent[fp++];
ALi("Major and minor linker version " + majLinkerVersion + "." + minLinkerVersion);
vars.sizeOfCode = GetInt(fileContent, fp);
fp += 4;
ALi("size of code " + printSize(vars.sizeOfCode));
if (vars.sizeOfCode <= 0 && !vars.isDLL || vars.sizeOfCode > vars.SizeOfImage)
Alert("size of code <= 0 || > file length: " + vars.sizeOfCode + " of " + vars.SizeOfImage);
vars.sizeOfIData = GetInt(fileContent, fp);
fp += 4;
ALi("size of initialized data " + printSize(vars.sizeOfIData));
vars.sizeOfUData = GetInt(fileContent, fp);
fp += 4;
ALi("size of uninitialized data " + printSize(vars.sizeOfUData));
var aoep = A16S(GetInt(fileContent, fp), -1, AddressType.rva);
vars.AddressOfEntryPoint = (uint)aoep.a;
fp += 4;
ALi("Address of entry point " + aoep.sa);
if (vars.AddressOfEntryPoint > vars.SizeOfImage)
Alert("AddressOfEntryPoint > SizeOfImage: " + vars.AddressOfEntryPoint + " of " + vars.SizeOfImage);
if (vars.AddressOfEntryPoint == 0 && !vars.isDLL)
Alert("Address of entry point is null, but file is not DLL. " + A16(vars.AddressOfEntryPoint));
else
AL("Address of entry point is not null and/or file is DLL. " + A16(vars.AddressOfEntryPoint));
var boc = A16S(GetInt(fileContent, fp), -1, AddressType.rva);
vars.BaseOfCode = (uint)boc.a;
fp += 4;
ALi("Base of code " + boc.sa);
if (vars.BaseOfCode <= 0 && !vars.isDLL || vars.BaseOfCode > vars.SizeOfImage)
Alert("BaseOfCode <= 0 || > SizeOfImage: " + vars.BaseOfCode + " of " + vars.SizeOfImage);
if (vars.PE32Format)
{
var bod = A16S(GetInt(fileContent, fp), -1, AddressType.rva);
vars.BaseOfData = (uint)bod.a;
fp += 4;
ALi("Base of data " + bod.sa);
if (vars.BaseOfData <= 0 && !vars.isDLL || vars.BaseOfData > vars.SizeOfImage)
Alert("BaseOfData <= 0 || > SizeOfImage: " + vars.BaseOfData + " of " + vars.SizeOfImage);
}
var size4 = vars.PE32Format ? 4 : 8;
vars.ImageBase = ByteToSizedInteger(fileContent, fp, size4); fp += size4;
if (vars.ImageBase == 0x10000000 && vars.isDLL)
AL("Program have standard image base for DLL " + A16(vars.ImageBase));
else
if (vars.ImageBase == 0x00010000 && !vars.isDLL)
AL("Program have standard image base for Windows CE exe " + A16(vars.ImageBase));
else
if (vars.ImageBase == 0x00400000 && !vars.isDLL)
AL("Program have standard image base for exe Windows NT/98 and later " + A16(vars.ImageBase));
else
if (vars.ImageBase % (1024 * 64) == 0)
ALW("Image base is not standard address " + A16(vars.ImageBase));
else
Alert("Image base is incorrect, alignment 64k violate: " + A16(vars.ImageBase));
vars.SectionAlignment = (uint) ByteToSizedInteger(fileContent, fp, 4); fp += 4;
vars.FileAlignment = (uint) ByteToSizedInteger(fileContent, fp, 4); fp += 4;
if (vars.SectionAlignment >= vars.FileAlignment)
AL("Section alignment >= FileAlignment: " + A16(vars.SectionAlignment) + " >= " + A16(vars.FileAlignment));
else
Alert("Section alignment < FileAlignment: " + A16(vars.SectionAlignment) + " >= " + A16(vars.FileAlignment));
if (vars.SectionAlignment % 512 == 0)
AL("Section alignment % 512 == 0");
else
Alert("Section alignment % 512 != 0");
if (vars.FileAlignment % 512 == 0)
AL("File alignment % 512 == 0");
else
Alert("File alignment % 512 != 0");
if (vars.FileAlignment >= 512)
AL("FileAlignment >= 512");
else
Alert("FileAlignment < 512");
if (vars.FileAlignment <= 64 * 1024)
AL("FileAlignment <= 64 kb");
else
Alert("FileAlignment > 64 kb");
if (vars.SectionAlignment < 4096 && vars.FileAlignment != vars.SectionAlignment)
ALW("MAY BE ERROR: If section alignment < page size, then FileAlignment == SectionAlignment");
else
AL("SectionAlignment >= page size or FileAlignment == SectionAlignment");
var majver = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
var minver = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
ALi("Version of required operating system " + majver + "." + minver + " (6.0 - Windows Vista, 6.1 - Windows 7)");
majver = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
minver = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
ALi("Version of program " + majver + "." + minver);
majver = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
minver = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
ALi("Version of subsystem " + majver + "." + minver + " (NT version)");
var Win32VersionValue = ByteToSizedInteger(fileContent, fp, 4); fp += 4;
if (Win32VersionValue != 0)
Alert("Win32 version reserved and must be null - not satisfied: " + Win32VersionValue);
else
AL("Win32 version reserved and must be null");
/*Alert(A16(fp - vars.addressOfPESignature));
vars.SizeOfImage = ByteToSizedInteger(fileContent, fp, 4); fp += 4;*/
fp += 4;
if (vars.SizeOfImage == 0 || vars.SizeOfImage % vars.SectionAlignment != 0)
Alert("Size of image field does not multiple of section alignment: " + A16(vars.SizeOfImage) + " (SizeOfImage == 0 || SizeOfImage % SectionAlignment != 0)");
else
AL("Size of image field does multiple of section alignment (" + A16(vars.SizeOfImage) + ")");
vars.SizeOfHeaders = (uint) ByteToSizedInteger(fileContent, fp, 4); fp += 4;
if (vars.SizeOfHeaders == 0 || vars.SizeOfHeaders % vars.FileAlignment != 0)
Alert("Size of headers field does not multiple of file alignment: " + A16(vars.SizeOfHeaders) + " (SizeOfHeaders == 0 || SizeOfHeaders % FileAlignment != 0)");
else
AL("Size of headers field does multiple of file alignment (" + A16(vars.SizeOfHeaders) + ")");
vars.CheckSum = ByteToSizedInteger(fileContent, fp, 4); fp += 4;
if (vars.CheckSum == 0)
ALW("Check sum of file has not been calculated");
else
{
var t = CalculateCRC32(FileName, fileContent.Length);
if (t == -1)
ALW("Unable to verify the checksum");
else
if (t == (UInt32) vars.CheckSum)
AL("File check sum correct: " + A16(vars.CheckSum));
else
Alert("File check sum incorrect: calculated " + A16(t) + ", in file " + A16(vars.CheckSum));
}
var subSystem = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
var DllCharacteristics = ByteToSizedInteger(fileContent, fp, 2); fp += 2;
var SizeOfStackReserve = ByteToSizedInteger(fileContent, fp, size4); fp += size4;
var SizeOfStackCommit = ByteToSizedInteger(fileContent, fp, size4); fp += size4;
var SizeOfHeapReserve = ByteToSizedInteger(fileContent, fp, size4); fp += size4;
var SizeOfHeapCommit = ByteToSizedInteger(fileContent, fp, size4); fp += size4;
var LoaderFlags = ByteToSizedInteger(fileContent, fp, 4); fp += 4;
vars.NumberOfRvaAndSizes = ByteToSizedInteger(fileContent, fp, 4); fp += 4;
string[] subsystemsNames = {"unknown", "driver", "GUI", "console", "ERROR", "ERROR", "ERROR", "POSIX console", "ERROR", "Windows CE", "EFI application", "An EFI driver with boot services", "An EFI driver with run-time services", "An EFI ROM image", "XBOX"};
if (subSystem > 14 || (subSystem >= 4 && subSystem < 7) || subSystem == 8)
Alert("Windows Subsystem number incorrect: " + subSystem + " (" + ((int) subSystem < subsystemsNames.Length ? subsystemsNames[subSystem] : "ERROR") + ")");
else
if (subSystem == 1 || subSystem == 2 || subSystem == 3 || subSystem == 9)
AL("Windows Subsystem number correct: " + subSystem + " (" + subsystemsNames[subSystem] + ")");
else
ALW("Windows Subsystem number correct, but not describes driver, GUI or console: " + subSystem + " (" + subsystemsNames[subSystem] + ")");
if (subSystem == 1 && vars.CheckSum == 0)
Alert("Sheck sum of driver image must be calculated");
else
if (subSystem == 1)
AL("Sheck sum of driver image has been calculated");
if (vars.isDLL || DllCharacteristics != 0)
printDLLCharacteristics((ushort)DllCharacteristics);
if (!vars.isDLL && DllCharacteristics != 0)
ALW("DLL characteristics flags setted, but file is not DLL");
else if (!vars.isDLL)
AL("DLL characteristics flags all in reset state");
if (SizeOfStackCommit > SizeOfStackReserve)
Alert("Size of stack commit must be <= size of stack reserve: " + A16(SizeOfStackCommit) + " > " + A16(SizeOfStackReserve));
else
AL("Size of stack commit is <= size of stack reserve: " + A16(SizeOfStackCommit) + " <= " + A16(SizeOfStackReserve));
if (SizeOfHeapCommit > SizeOfHeapReserve)
Alert("Size of heap commit must be <= size of heap reserve: " + A16(SizeOfHeapCommit) + " > " + A16(SizeOfHeapReserve));
else
AL("Size of heap commit is <= size of heap reserve: " + A16(SizeOfHeapCommit) + " <= " + A16(SizeOfHeapReserve));
if (LoaderFlags != 0)
Alert("Loader flags must be null, but " + A16(LoaderFlags));
else
AL("Loader flags is be null");
if (vars.NumberOfRvaAndSizes > 16)
Alert("NumberOfRvaAndSizes (directory entries) must be 16 or less: " + A16(vars.NumberOfRvaAndSizes));
else
AL("NumberOfRvaAndSizes (directory entries) is 16 or less: " + A16(vars.NumberOfRvaAndSizes));
if (vars.NumberOfRvaAndSizes == 0)
ALW("0 directory entries - very simple file. MAY BE ERROR");
else
{
ALine();
for (int i = 0; i < (int) vars.NumberOfRvaAndSizes; i++)
{
ALine();
printDirectoryEntries(fileContent, ref fp, i);
}
ALine();ALine();
}
/* Всё-таки непонятно, что это за IAT
if (vars.rvaImportDirectory > 0)
{
if (vars.rvaIATDirectory == 0)
Alert("IAT directory enrty not found, but import declared");
else
AL("Import declared and IAT directory enrty found");
}
*/
// --------------------
// Здесь закончился optional header
// Заголовки PE-файла заканчиваются после таблицы секций
uint sectionTableSize = 40U * vars.sectionCount;
uint endOfHeadersNA = (uint) (fp + sectionTableSize);
uint endOfHeadersAlign = endOfHeadersNA;
vars.endOfHeadersAD = vars.SizeOfHeadersAdd;
uint endOfOptHeaders = (uint) fp;
vars.headerFactEnd = endOfHeadersNA;
if (endOfHeadersAlign % vars.FileAlignment != 0)
{
endOfHeadersAlign = endOfHeadersNA + vars.FileAlignment - (endOfHeadersNA % vars.FileAlignment);
}
if (vars.endOfHeadersAD % vars.FileAlignment != 0)
{
vars.endOfHeadersAD = vars.endOfHeadersAD + vars.FileAlignment - (vars.endOfHeadersAD % vars.FileAlignment);
}
if (vars.SizeOfHeaders != endOfHeadersAlign)
{
if (vars.SizeOfHeaders != vars.endOfHeadersAD)
Alert("Size of headers is incorrect: writed in file " + A16(vars.SizeOfHeaders) + ", calculated with align " + A16(endOfHeadersAlign) + ", calculated without align " + A16(endOfHeadersNA) + ", file alignment " + A16(vars.FileAlignment) + ", with not-header info " + A16(vars.endOfHeadersAD));
else
ALW("Size of header may be correct, but header section contain not header information: size of headers, writed in file " + A16(vars.SizeOfHeaders) + ", calculated with align " + A16(endOfHeadersAlign) + ", calculated without align " + A16(endOfHeadersNA) + ", file alignment " + A16(vars.FileAlignment) + ", with not header info " + A16(vars.endOfHeadersAD));
}
else
AL("Size of headers is correct with file alignmet: " + A16(vars.SizeOfHeaders) + ", file alignment " + A16(vars.FileAlignment) + ", unalignment size " + A16(endOfHeadersNA));
if (endOfOptHeaders != vars.optionalHeaderOffset + vars.sizeOfOptionalHeader)
Alert("Size of optional header in PE header is incorrect: calculated " + A16(endOfOptHeaders - vars.optionalHeaderOffset) + ", in file by sizeOfOptionalHeader and opt. header offset " + A16(vars.sizeOfOptionalHeader));
else
AL("Size of optional header in PE header is correct. End of headers in fp " + A16(endOfOptHeaders) + ", size of opt. headers " + A16(endOfOptHeaders - vars.optionalHeaderOffset));
var headerSection = new section(null);
headerSection.rawDataFilePointer = 0;
headerSection.rva = 0;
headerSection.va = vars.ImageBase;
headerSection.VirtualSize = vars.endOfHeadersAD + endOfHeadersAlign;
headerSection.sizeOfRawData = vars.endOfHeadersAD + endOfHeadersAlign;
baseAddresses.Add(-1, headerSection);
vars.ImageContainsExecutableSection = false;
for (int i = 0; i < vars.sectionCount; i++)
{
var section = printSection(fileContent, ref fp, i);
if (section != null && (section.CanBeExecute || section.ContainsExecutable))
vars.ImageContainsExecutableSection = true;
}
SortedList<ulong, ulong> sortedRVA = new SortedList<ulong, ulong>();
SortedList<ulong, ulong> sortedFP = new SortedList<ulong, ulong>();
bool errorFlag = false;
for (int i = 0; i < baseAddresses.Count - 2; i++) // номера секций идут по порядку, но есть секция -1 (кажется, это я о заголовке)
{
if (baseAddresses[i+1].rva < baseAddresses[i+0].rva)
Alert("Sections with incorrect sequence: " + baseAddresses[i+0].sectionName + " -> " + baseAddresses[i+1].sectionName + " " + A16(baseAddresses[i+0].rva) + "->" + A16(baseAddresses[i+1].rva));
}
for (int i = -1; i < baseAddresses.Count - 1; i++) // номера секций идут по порядку, но есть секция -1
{
var cur1 = baseAddresses[i];
for (int j = i + 1; j < baseAddresses.Count - 1; j++)
{
var cur2 = baseAddresses[j];
ulong c1b = cur1.rva, c1e = Math.Max(cur1.rva + cur1.sizeOfRawData, cur1.rva + cur1.VirtualSize);
ulong c2b = cur2.rva, c2e = Math.Max(cur2.rva + cur2.sizeOfRawData, cur2.rva + cur2.VirtualSize);
if (c1b <= c2b)
{
if (c1e > c2b || c1b == c2b)
{
errorFlag = true;
Alert("Section " + i + " " + cur1.sectionName + " and section " + j + " " + cur2.sectionName + " intersect. " + cur1.rva + "->" + cur1.sizeOfRawData + " " + cur2.rva + "->" + cur2.sizeOfRawData);
}
}
else
{
if (c2e > c1b)
{
errorFlag = true;
Alert("Section " + i + " " + cur1.sectionName + " and section " + j + " " + cur2.sectionName + " intersect. " + cur1.rva + "->" + cur1.sizeOfRawData + " " + cur2.rva + "->" + cur2.sizeOfRawData);
}
}
}
if (!sortedRVA.ContainsKey(cur1.rva))
sortedRVA.Add(cur1.rva, AlignmentSA(cur1.rva + cur1.VirtualSize, vars.SectionAlignment));
else
Alert("Section " + cur1.sectionName + " (relative address) equals with other section");
if (!sortedFP.ContainsKey(cur1.filePointer))
sortedFP.Add(cur1.filePointer, AlignmentSA(cur1.filePointer + cur1.sizeOfRawData, vars.FileAlignment));
else
Alert("Section " + cur1.sectionName + " (filePointer) equals with other section");
}
if (!errorFlag)
AL("Section do not intersect");
bool unusedPagesFound = false;
bool unusedSectorsFound = false;
for (int i = 0; i < sortedRVA.Count - 1; i++)
{
if (sortedRVA.Values[i] - sortedRVA.Keys[i + 1] != 0)
{
ALW("Unused pages found at addresses " + A16(sortedRVA.Values[i]) + " " + A16(sortedRVA.Keys[i + 1]));
unusedPagesFound = true;
}
}
// Например, в AIMP так бывает, что sortedRVA и sortedFP содержат разное количество значений
for (int i = 0; i < sortedFP.Count - 1; i++)
{
if (sortedFP.Values[i] - sortedFP.Keys[i + 1] != 0)
{
ALW("Unused sectors found at addresses " + A16(sortedFP.Values[i]) + " " + A16(sortedRVA.Keys[i + 1]));
unusedSectorsFound = true;
}
}
if (!unusedPagesFound)
AL("Unused pages (in image) not found");
if (!unusedSectorsFound)
AL("Unused sectors (in file) not found");
if (vars.ImageContainsExecutableSection)
{
if (
( (DllCharacteristics & 0x0040) > 1 || (vars.fileCharacteristics & 1) == 0 )
&& (vars.rvaRelocationDirectory == 0 || vars.rvaRelocationDirectoryS == 0)
)
ALW("File or dll characteristics declare to relocation information contains, but base relocation table is not found");
else
AL("File or dll characteristics not declare to relocation information contains or base relocation table is found");
}
byte[] image = getImage(fileContent);
checkImport(fileContent);
checkExport(image, FileName);
}
catch (Exception e)
{
Alert("In checking process raise error " + e.Message.Replace("\\", "\\\\"));
}
EndOfValidate:
if (errorCount > 0)
{
sb.Replace("{RESULT_CHECKING}", "\\par {\\b \\cf3 Incorrect file, " + errorCount + " errors found}");
lock (global_sb)
global_sb.Append(sb.ToString());
return false;
}
else
{
var str = Path.GetExtension(FileName).ToLowerInvariant();
lock (ext)
{
if (str.Length < 12 && !ext.ContainsKey(str))
ext.Add(Path.GetExtension(FileName).ToLowerInvariant(), 0);
}
sb.Replace("{RESULT_CHECKING}", "\\par {\\b \\cf5 File is correct}");
lock (global_sb)
global_sb.Append(sb.ToString());
return true;
}
}
private ulong AlignmentSA(ulong address, uint alignment)
{
if (address % alignment == 0)
return address;
return (address + alignment - (address % alignment));
}
private byte[] getImage(byte[] fileContent)
{
var result = new byte[vars.SizeOfImage];
CopyTo(fileContent, result, 0, vars.endOfHeadersAD);
for (int i = 0; i < baseAddresses.Count - 1; i++) // Секции в baseAddresses начинаются с -1-ой
{
section s = baseAddresses[i];
var maxLen = Math.Max(s.sizeOfRawData, s.VirtualSize);
var minLen = Math.Min(s.sizeOfRawData, s.VirtualSize);
if (s.rawDataFilePointer + minLen > (ulong) fileContent.LongLength)
{
Alert(String.Format("Checking for section {0} {1} abort, end of data section declared out of file place {2} > {3}", i, s.sectionName, A16(s.rva + minLen), A16(fileContent.LongLength)));
continue;
}
CopyTo(fileContent, result, (long) s.rva, (long) minLen, (long) s.rawDataFilePointer);
if (s.VirtualSize < s.sizeOfRawData)
{
if (s.rawDataFilePointer + s.sizeOfRawData > (ulong) fileContent.LongLength)
ALW(String.Format("File must be alignet to File alignment, but section {0} {1} padding out of file place ({2} > {3})", i, s.sectionName, A16(s.rawDataFilePointer + s.sizeOfRawData), A16(fileContent.LongLength)));
else
{
bool isZeroPadded = true;
for (ulong j = s.rawDataFilePointer + minLen; j < s.rawDataFilePointer + s.sizeOfRawData; j++)
if (fileContent[j] != 0)
isZeroPadded = false;
if (isZeroPadded)
AL(String.Format("Section {0} {1}\tis well zero padded (check for only VirtualSize < sizeOfRawData sections)", i, s.sectionName));
else
if (s.ResourceDirectoryContains && (long) (maxLen - minLen) >= "PADDINGXX".Length)
{
var paddings = new byte[maxLen-minLen];
CopyTo(fileContent, paddings, 0, paddings.Length, (long) s.sizeOfRawData + (long) minLen);
var strpaddings = Encoding.UTF8.GetString(paddings);
var rg = new System.Text.RegularExpressions.Regex("^(PADDINGXX){1,*}P?A?D?D?I?N?G?X?$");
if (rg.IsMatch(strpaddings))
ALW(String.Format("Section {0} {1}\tis not zero padded. Non standard padding detected by resource padding 'PADDINGXX'", i, s.sectionName));
else
{
string strPaddingsTrunc = BitConverter.ToString(paddings);
if (strPaddingsTrunc.Length > 47)
strPaddingsTrunc = strPaddingsTrunc.Substring(0, 47);
Alert(String.Format("Section {0} {1} have virtual size {2} < size of raw data {3} and must be zero padded, but not is it and resource padding 'PADDINGXX' not detected too; in address {4} bytes (max 16 bytes in hex): {5}", i, s.sectionName, A16(s.VirtualSize), A16(s.sizeOfRawData), A16(s.rawDataFilePointer + minLen), strPaddingsTrunc));
}
}
else
{
var paddings = new byte[maxLen-minLen];
CopyTo(fileContent, paddings, 0, paddings.Length, (long) s.sizeOfRawData + (long) minLen);
string strPaddingsTrunc = BitConverter.ToString(paddings);
if (strPaddingsTrunc.Length > 47)
strPaddingsTrunc = strPaddingsTrunc.Substring(0, 47);
Alert(String.Format("Section {0} {1} have virtual size {2} < size of raw data {3} and must be zero padded, but not is it; in address {4} bytes (max 16 bytes in hex): {5}", i, s.sectionName, A16(s.VirtualSize), A16(s.sizeOfRawData), A16(s.rawDataFilePointer + minLen), strPaddingsTrunc));
}
}
}
else
if (s.VirtualSize > s.sizeOfRawData)
{