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Convert Inno Setup to section based

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Matt Nadareski
2021-08-26 23:07:04 -07:00
parent 3b634877d0
commit 2bdbad1ba6
1 changed files with 56 additions and 20 deletions
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76
BurnOutSharp/PackerType/InnoSetup.cs
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@@ -4,7 +4,9 @@ using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using BurnOutSharp.ExecutableType.Microsoft;
using BurnOutSharp.Matching;
using BurnOutSharp.Tools;
namespace BurnOutSharp.PackerType
{
@@ -14,28 +16,62 @@ namespace BurnOutSharp.PackerType
public bool ShouldScan(byte[] magic) => true;
/// <inheritdoc/>
public List<ContentMatchSet> GetContentMatchSets()
{
return new List<ContentMatchSet>
{
// Inno Setup Setup Data (
new ContentMatchSet(new byte?[]
{
0x49, 0x6E, 0x6E, 0x6F, 0x20, 0x53, 0x65, 0x74,
0x75, 0x70, 0x20, 0x53, 0x65, 0x74, 0x75, 0x70,
0x20, 0x44, 0x61, 0x74, 0x61, 0x20, 0x28
}, GetVersion, "Inno Setup"),
// Inno
new ContentMatchSet(
new ContentMatch(new byte?[] { 0x49, 0x6E, 0x6E, 0x6F }, start: 0x30, end: 0x31),
GetOldVersion,
"Inno Setup"),
};
}
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)
{
// Get the sections from the executable, if possible
PEExecutable pex = PEExecutable.Deserialize(fileContent, 0);
var sections = pex?.SectionHeaders;
if (sections == null)
return null;
// Get the DATA/.data section, if it exists
var dataSection = sections.FirstOrDefault(s => {
string name = Encoding.ASCII.GetString(s.Name).Trim('\0');
return name.StartsWith("DATA") || name.StartsWith(".data");
});
if (dataSection != null)
{
int sectionAddr = (int)EVORE.ConvertVirtualAddress(dataSection.VirtualAddress, sections);
int sectionEnd = sectionAddr + (int)dataSection.VirtualSize;
var matchers = new List<ContentMatchSet>
{
// Inno Setup Setup Data (
new ContentMatchSet(
new ContentMatch(new byte?[]
{
0x49, 0x6E, 0x6E, 0x6F, 0x20, 0x53, 0x65, 0x74,
0x75, 0x70, 0x20, 0x53, 0x65, 0x74, 0x75, 0x70,
0x20, 0x44, 0x61, 0x74, 0x61, 0x20, 0x28
}, start: sectionAddr, end: sectionEnd),
GetVersion,
"Inno Setup"),
};
string match = MatchUtil.GetFirstMatch(file, fileContent, matchers, includeDebug);
if (!string.IsNullOrWhiteSpace(match))
return match;
}
// Get the DOS stub from the executable, if possible
var stub = pex?.MSDOSStub;
if (stub == null)
return null;
// Check for "Inno" in the reserved words
if (stub.Reserved2[4] == 0x6E49 && stub.Reserved2[5] == 0x6F6E)
{
string version = GetOldVersion(file, fileContent, new List<int> { 0x30 });
if (!string.IsNullOrWhiteSpace(version))
return $"Inno Setup {version}";
return "Inno Setup (Unknown Version)";
}
return null;
}
/// <inheritdoc/>
public ConcurrentDictionary<string, ConcurrentQueue<string>> Scan(Scanner scanner, string file)