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License: MIT License
C# wrapper around the Yara pattern matching library
License: MIT License
Trying to recompile the project to target .net 3.5, but can't locate four dependencies and not sure where to find them after searching everywhere.
Is there a nuget service I should be using to find:
YARA.Jansson.x64 / YARA.Jansson.x86
YARA.OpenSSL.x64 / YARA.OpenSSL.x86
Or are these just normal Jansson/OpenSLL projects that have been renamed/recompiled?
I added two new functions according to my own needs.
โ
1. CompileFromString -> Instance.cpp
2. CompileFromFile -> Instance.cpp
I hope it helps :)
Hi,
in Instance.cpp an exception can be thrown, as a result the "delete PScanner;" will not be called
adding try...catch...finally... or try...finally... should fix the issue
in case of an exception the YSScanner is not disposed
List<YSMatches^>^ YSInstance::ScanProcess(int pID, YSRules^ rules, Dictionary<String^, Object^>^ externalVariables, int timeout)
{
YSScanner^ PScanner = gcnew YSScanner(rules, externalVariables, timeout);
try{
List<YSMatches^>^ results = PScanner->ScanProcess(pID);
return results;
}
catch (System::Exception^ e){
throw e;
}
finally{
delete PScanner;
}
}
I would like to add rules or patterns, but couldn't find any refs. My boss told me to use this library for full-text search engine. So I just want to search a txt file for search words.
I guess I can add some rules below...
YSRules rules = compiler.GetRules();
I want to add rules using a string and not a external file
I'm attempting to use the library via a simple example:
YSInstance YSInstance = new YSInstance();
Dictionary<string, object> CONST_YS_EXTERNAL_VALUES =
new Dictionary<string, object>()
{
{ "filename", string.Empty },
{ "filepath", string.Empty },
{ "extension", string.Empty }
};
// Get list of YARA rules
List<string> ruleFilenames =
Directory.GetFiles(@"F:\Configuration\Yara", "*.yara", SearchOption.AllDirectories).ToList();
YSRules reviewRules = null;
using (YSContext context = new YSContext())
{
// Compiling rules
using (YSCompiler compiler = YSInstance.CompileFromFiles(ruleFilenames, CONST_YS_EXTERNAL_VALUES))
{
// Get compiled rules
reviewRules = compiler.GetRules();
YSReport errors = compiler.GetErrors();
YSReport warnings = compiler.GetWarnings();
}
}
string[] list = new string[] { "Flare", "Something", "blah blah", "offensive" };
foreach (var TmpVal in list)
{
byte[] commTextBytes = ASCIIEncoding.ASCII.GetBytes(TmpVal);
List<YSMatches> Matches =
YSInstance.ScanMemory(commTextBytes,
poReviewRules,
CONST_YS_EXTERNAL_VALUES,
1000);
}
But when I call "ScanMemory()", I get the following result:
System.AccessViolationException: 'Attempted to read or write protected memory. This is often an indication that other memory is corrupt.'
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