221BlueStreet (@SaharShukrun) header
221BlueStreet (@SaharShukrun) profile picture

Security Researcher @ Palo Alto Networks

ישראל
Joined February 2017
Just finished @codemachineinc 's Windows Rootkit Techniques course, hands down, the best training I've ever taken. I recommend to anyone to attend at least one of T.roy's courses during his lifetime.
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If you guys are into Windows Component Object Model (COM) ; or always wanted to understand it, I've made a nice primer for COM, very detail with many examples to cover the black magic that surrounds this tech :)) 221bluestreet.com/knowledgeb…
I've just discovered this amazing document showing super clearly the relation between the opcode and the instruction 🤯 pnx.tf/files/x86_opcode_stru…
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Active Directory "WriteOwner" DACL abuse, now in Python 🐍 github.com/SecureAuthCorp/im… And icymi, "WriteDACL" abuse, also in Python now 🐍 github.com/SecureAuthCorp/im… One DACL abuse is left implementing, "Logon script"
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🚨 #Python for security investigations, research & threat hunting? 🪵 Collect 👔 Enrich 🔍Analyze & 📊Viz data! 💸 oh.. & for free! open source! The amazing @ianhellen @MSSPete @ashwinpatil 'll show how to w/ MSTICpy 🔥@BlackHatEvents #BHUSA Arsenal: blackhat.com/us-20/arsenal/s…
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Instead of leveraging VBAWarning:1 to disable macro warnings, you can use the TRUST mechanism to "disable" all security mechanisms by adding a "Trusted Location" or "Trusted Document" entry. HKCU\SOFTWARE\Microsoft\Office\16.0\Word\Security\Trusted Locations\Location01\<path>
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HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Word\Security\Trusted Documents ======= You can also specify the trusted path as "C:\" and add a value that trusts all sub-folder of the trusted directory: ...\Word\Security\TrustedLocations\Location01\AllowSubFolders
Super Excited :D:D
🚨 Organizing an Infosec Jupyterthon on 5/8 🚀 An open virtual community event for security researchers to share their favorite @ProjectJupyter #notebooks w/ the Infosec 🌎 Share & meet other Infosec Jovyans! Site: infosecjupyterthon.com Call for 📔: bit.ly/InfosecJupyterthonCFN
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A lot of new #cloud techniques were added to #mitreattack matrix, along with additional new and updated techniques. In the update you can even find my own recent contribution regarding the office persistence technique I recently published an article about attack.mitre.org/techniques/…
221BlueStreet retweeted
We probably had a little too much fun making our new marketing video but we love the end result. Get the full picture of everything that the LimaCharlie Security Infrastructure as a Service can do. Watch the video here: youtu.be/mxAxIn3E2Ew #infosec #mssp #cybersecurity #edr
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Meet OSSEM, another great project by @Cyb3rWard0g , the project's goal is to maintain and standardize a Common Information Model for different events data sets. It also aims at having a data dictionaries for each data set source (Sysmon, WinEvt, EDR's) github.com/Cyb3rWard0g/OSSEM
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A rough overview of how EDR products works and couple of notes about EDR weaknesses that are common in multiple EDR vendors. Nice read christopher-vella.com/2019/0…
Sharing one of my obfuscation detection #YARA rules with the community PowerShell Caret Obfuscation > note the fixed 3byte atoms at the beginning & end of $s1 & $s2 > necessary to improve regex performance Rule github.com/Neo23x0/signature… Retrohunt + Munin docs.google.com/spreadsheets…
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🚨New Research - T1137 Office Start-up Application🚨 New Microsoft Office persistence technique implementation! #microsoftoffice #persistence #t1137 #blueteam #cybersecurity #mitre #cyber #officetemplates #GlobalDotName bit.ly/2IYmYEb
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📢New Stealthy Office Persistence Technique📢 Tomorrow night I'll be publishing a new article about a persistence technique in Microsoft's Office. An in-depth explanation of inner workings of Word and a new stealthy implementation! Excited! #Persistence #T1137 #ThreatResearch
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