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Code Issues 295 Packages Projects Releases 20 Wiki Activity

Fix one ActiveMARK check; add note

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This commit is contained in:
Matt Nadareski
2021-09-08 10:14:02 -07:00
parent 198c320ad8
commit fba30949bd
1 changed files with 33 additions and 4 deletions
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37
BurnOutSharp/ProtectionType/ActiveMARK.cs
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@@ -1,8 +1,12 @@
using System.Collections.Generic;
using System.Linq;
using System.Text;
using BurnOutSharp.ExecutableType.Microsoft;
using BurnOutSharp.Matching;
namespace BurnOutSharp.ProtectionType
{
// TODO: Figure out how to get version numbers
public class ActiveMARK : IContentCheck
{
/// <inheritdoc/>
@@ -11,9 +15,6 @@ namespace BurnOutSharp.ProtectionType
// TODO: Obtain a sample to find where this string is in a typical executable
return new List<ContentMatchSet>
{
// TMSAMVOF
new ContentMatchSet(new byte?[] { 0x54, 0x4D, 0x53, 0x41, 0x4D, 0x56, 0x4F, 0x46 }, "ActiveMARK"),
// " " + (char)0xC2 + (char)0x16 + (char)0x00 + (char)0xA8 + (char)0xC1 + (char)0x16 + (char)0x00 + (char)0xB8 + (char)0xC1 + (char)0x16 + (char)0x00 + (char)0x86 + (char)0xC8 + (char)0x16 + (char)0x00 + (char)0x9A + (char)0xC1 + (char)0x16 + (char)0x00 + (char)0x10 + (char)0xC2 + (char)0x16 + (char)0x00
new ContentMatchSet(new byte?[]
{
@@ -25,6 +26,34 @@ namespace BurnOutSharp.ProtectionType
}
/// <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 last .bss section, if it exists
var bssSection = sections.LastOrDefault(s => Encoding.ASCII.GetString(s.Name).StartsWith(".bss"));
if (bssSection != null)
{
int sectionAddr = (int)bssSection.PointerToRawData;
int sectionEnd = sectionAddr + (int)bssSection.VirtualSize;
var matchers = new List<ContentMatchSet>
{
// TMSAMVOF
new ContentMatchSet(
new ContentMatch(new byte?[] { 0x54, 0x4D, 0x53, 0x41, 0x4D, 0x56, 0x4F, 0x46 }, start: sectionAddr, end: sectionEnd),
"ActiveMARK"),
};
string match = MatchUtil.GetFirstMatch(file, fileContent, matchers, includeDebug);
if (!string.IsNullOrWhiteSpace(match))
return match;
}
return null;
}
}
}