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Partially convert CD-Cops to section based; add note

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Matt Nadareski
2021-08-29 21:38:19 -07:00
parent 6d78e2fff7
commit 6452d39de1
1 changed files with 38 additions and 4 deletions
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42
BurnOutSharp/ProtectionType/CDCops.cs
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@@ -2,6 +2,8 @@
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using BurnOutSharp.ExecutableType.Microsoft;
using BurnOutSharp.Matching;
namespace BurnOutSharp.ProtectionType
@@ -11,6 +13,7 @@ namespace BurnOutSharp.ProtectionType
/// <inheritdoc/>
public List<ContentMatchSet> GetContentMatchSets()
{
// TODO: Obtain a sample to find where this string is in a typical executable
return new List<ContentMatchSet>
{
// CD-Cops, ver.
@@ -19,14 +22,45 @@ namespace BurnOutSharp.ProtectionType
0x43, 0x44, 0x2D, 0x43, 0x6F, 0x70, 0x73, 0x2C,
0x20, 0x20, 0x76, 0x65, 0x72, 0x2E, 0x20
}, GetVersion, "CD-Cops"),
// .grand + (char)0x00
new ContentMatchSet(new byte?[] { 0x2E, 0x67, 0x72, 0x61, 0x6E, 0x64, 0x00 }, "CD-Cops"),
};
}
/// <inheritdoc/>
public string CheckContents(string file, byte[] fileContent, bool includeDebug = false) => null;
public string CheckContents(string file, byte[] fileContent, bool includeDebug = false)
{
// 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 .grand section, if it exists
var grandSection = sections.FirstOrDefault(s => Encoding.ASCII.GetString(s.Name).StartsWith(".grand"));
if (grandSection != null)
{
int sectionAddr = (int)grandSection.PointerToRawData;
int sectionEnd = sectionAddr + (int)grandSection.VirtualSize;
var matchers = new List<ContentMatchSet>
{
// CD-Cops, ver.
new ContentMatchSet(
new ContentMatch(new byte?[]
{
0x43, 0x44, 0x2D, 0x43, 0x6F, 0x70, 0x73, 0x2C,
0x20, 0x20, 0x76, 0x65, 0x72, 0x2E, 0x20
}, start: sectionAddr, end: sectionEnd),
GetVersion, "CD-Cops"),
};
string match = MatchUtil.GetFirstMatch(file, fileContent, matchers, includeDebug);
if (!string.IsNullOrWhiteSpace(match))
return match;
// return "CD-Cops (Unknown Version)";
}
return null;
}
/// <inheritdoc/>
public ConcurrentQueue<string> CheckDirectoryPath(string path, IEnumerable<string> files)