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https://github.com/overcuriousity/autopsy-flatpak.git
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114 lines
3.0 KiB
Perl
114 lines
3.0 KiB
Perl
#-----------------------------------------------------------
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# syscache_tln.pl
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#
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# Change history
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# 20190516 - tln output added
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# 20181209 - original plugin created
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#
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# References
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# https://github.com/libyal/winreg-kb/blob/master/documentation/SysCache.asciidoc
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#
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# Copyright (c) 2019 QAR, LLC
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# Author: H. Carvey, keydet89@yahoo.com
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#-----------------------------------------------------------
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package syscache_tln;
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use strict;
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my %config = (hive => "syscache",
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hasShortDescr => 0,
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hasDescr => 0,
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hasRefs => 0,
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osmask => 22,
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category => "program execution",
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version => 20190516);
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my $VERSION = getVersion();
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# Functions #
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sub getConfig {return %config}
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sub getHive {return $config{hive};}
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sub getVersion {return $config{version};}
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sub getDescr {}
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sub getShortDescr {}
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sub getRefs {}
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sub pluginmain {
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my $class = shift;
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my $hive = shift;
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# ::logMsg("Launching syscache v.".$VERSION);
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# ::rptMsg("syscache_csv v.".$VERSION);
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# ::rptMsg("(".$config{hive}.") ".getShortDescr()."\n");
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my $reg = Parse::Win32Registry->new($hive);
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my $root_key = $reg->get_root_key;
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my $key;
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my $key_path = 'DefaultObjectStore\\ObjectTable';
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if ($key = $root_key->get_subkey($key_path)) {
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my @subkeys = $key->get_list_of_subkeys();
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if (scalar @subkeys > 0) {
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foreach my $sk (@subkeys) {
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processKey($sk);
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# ::rptMsg("");
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}
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}
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}
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else {
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::rptMsg($key_path." not found");
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}
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}
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sub processKey {
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my $key = shift;
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my @str = ();
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my $lw = $key->get_timestamp();
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# ::rptMsg("LastWrite: ".gmtime($lw)." Z");
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my $str = $lw."|SYSCACHE|||";
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eval {
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my ($f1,$f2,$seq) = unpack("Vvv",$key->get_value("_FileId_")->get_data());
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my $entry = mftRecNum($f1,$f2);
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# ::rptMsg(" FileID = ".$entry."/".$seq);
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$str .= "MFT Ref: ".$entry."/".$seq." ";
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};
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eval {
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my $aefileid = $key->get_value("AeFileID")->get_data();
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$aefileid =~ s/\00//g;
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my $sha1 = $aefileid;
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$sha1 =~ s/^0000//;
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$str .= "SHA-1: ".$sha1;
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# ::rptMsg(" AeFileID = ".$aefileid);
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# ::rptMsg(" SHA-1 Hash = ".$sha1);
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};
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# eval {
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# my ($u1,$u2) = unpack("VV",$key->get_value("_UsnJournalId_")->get_data());
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# my $usn = ::getTime($u1,$u2);
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# ::rptMsg(" USN Journal ID = ".gmtime($usn)." Z");
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# };
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::rptMsg($str);
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}
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# from: http://www.cse.scu.edu/~tschwarz/coen252_07Fall/Lectures/NTFS.html
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# "Each MFT record is addressed by a 48 bit MFT entry value.The first entry has address 0.
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# Each MFT entry has a 16 bit sequence number that is incremented when the entry is allocated.
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# MFT entry value and sequence number combined yield 64b file reference address.:
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#
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# The 64-bit field is translated as 48-bits for the entry number and 16-bits for the
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# sequence number
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#
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# variation of the below code shared by David Cowen
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sub mftRecNum {
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my $f1 = shift;
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my $f2 = shift;
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if ($f2 == 0) {
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return $f1;
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}
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else {
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$f2 = ($f2 * 16777216);
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return ($f1 + $f2);
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}
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}
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1; |