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Code Issues 295 Packages Projects Releases 20 Wiki Activity

Convert EReg to fvinfo and section based; add note

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Matt Nadareski
2021-09-01 14:10:12 -07:00
parent 040aa8daf6
commit 1ae0f694de
1 changed files with 55 additions and 17 deletions
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72
BurnOutSharp/ProtectionType/OnlineRegistration.cs
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@@ -1,4 +1,8 @@
using System.Collections.Generic;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using BurnOutSharp.ExecutableType.Microsoft;
using BurnOutSharp.Matching;
using BurnOutSharp.Tools;
@@ -7,23 +11,57 @@ namespace BurnOutSharp.ProtectionType
public class OnlineRegistration : IContentCheck
{
/// <inheritdoc/>
public List<ContentMatchSet> GetContentMatchSets()
{
return new List<ContentMatchSet>
{
// I + (char)0x00 + n + (char)0x00 + t + (char)0x00 + e + (char)0x00 + r + (char)0x00 + n + (char)0x00 + a + (char)0x00 + l + (char)0x00 + N + (char)0x00 + a + (char)0x00 + m + (char)0x00 + e + (char)0x00 + + (char)0x00 + + (char)0x00 + E + (char)0x00 + R + (char)0x00 + e + (char)0x00 + g + (char)0x00
new ContentMatchSet(new byte?[]
{
0x49, 0x00, 0x6E, 0x00, 0x74, 0x00, 0x65, 0x00,
0x72, 0x00, 0x6E, 0x00, 0x61, 0x00, 0x6C, 0x00,
0x4E, 0x00, 0x61, 0x00, 0x6D, 0x00, 0x65, 0x00,
0x00, 0x00, 0x45, 0x00, 0x52, 0x00, 0x65, 0x00,
0x67, 0x00
}, Utilities.GetFileVersion, "Executable-Based Online Registration"),
};
}
public List<ContentMatchSet> GetContentMatchSets() => null;
/// <inheritdoc/>
public string CheckContents(string file, byte[] fileContent, bool includeDebug = false) => null;
public string CheckContents(string file, byte[] fileContent, bool includeDebug = false)
{
// TODO: Implement resource finding instead of using the built in methods
// Assembly information lives in the .rsrc section
// I need to find out how to navigate the resources in general
// as well as figure out the specific resources for both
// file info and MUI (XML) info. Once I figure this out,
// that also opens the doors to easier assembly XML checks.
var fvinfo = Utilities.GetFileVersionInfo(file);
string name = fvinfo?.InternalName?.Trim();
if (!string.IsNullOrWhiteSpace(name) && name.StartsWith("EReg", StringComparison.OrdinalIgnoreCase))
return $"Executable-Based Online Registration {Utilities.GetFileVersion(file, fileContent, null)}";
// Get the sections from the executable, if possible
PortableExecutable pex = PortableExecutable.Deserialize(fileContent, 0);
var sections = pex?.SectionTable;
if (sections == null)
return null;
// Get the .rsrc section, if it exists
var rsrcSection = sections.FirstOrDefault(s => Encoding.ASCII.GetString(s.Name).StartsWith(".rsrc"));
if (rsrcSection != null)
{
int sectionAddr = (int)rsrcSection.PointerToRawData;
int sectionEnd = sectionAddr + (int)rsrcSection.VirtualSize;
var matchers = new List<ContentMatchSet>
{
// I + (char)0x00 + n + (char)0x00 + t + (char)0x00 + e + (char)0x00 + r + (char)0x00 + n + (char)0x00 + a + (char)0x00 + l + (char)0x00 + N + (char)0x00 + a + (char)0x00 + m + (char)0x00 + e + (char)0x00 + + (char)0x00 + + (char)0x00 + E + (char)0x00 + R + (char)0x00 + e + (char)0x00 + g + (char)0x00
new ContentMatchSet(
new ContentMatch(new byte?[]
{
0x49, 0x00, 0x6E, 0x00, 0x74, 0x00, 0x65, 0x00,
0x72, 0x00, 0x6E, 0x00, 0x61, 0x00, 0x6C, 0x00,
0x4E, 0x00, 0x61, 0x00, 0x6D, 0x00, 0x65, 0x00,
0x00, 0x00, 0x45, 0x00, 0x52, 0x00, 0x65, 0x00,
0x67, 0x00
}, start: sectionAddr, end: sectionEnd),
Utilities.GetFileVersion, "Executable-Based Online Registration"),
};
string match = MatchUtil.GetFirstMatch(file, fileContent, matchers, includeDebug);
if (!string.IsNullOrWhiteSpace(match))
return match;
}
return null;
}
}
}