Opcode @Opcode__
Average CTF enjoyer Joined February 2022-
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Exciting times. I'm publishing Dittobytes today after presenting it at @OrangeCon_nl ! Dittobytes is a true metamorphic cross-compiler aimed at evasion. Use Dittobytes to compile your malware. Each compilation produces unique, functional shellcode. github.com/tijme/dittobyt…
Happy to release SAMLSmith together with @ericonidentity - Generate forged SAML responses - Simulate Silver SAML & Golden SAML attacks - Extract usable certificate files from AD FS encrypted materials. The tool is written in C# Check it out here - github.com/Semperis/SAMLS…
BadSuccessor is dead… or is it? The patch for CVE-2025-53779 fixed the priv-esc. While no longer a vulnerability, the tactic still applies in certain scenarios. Defenders should be aware of it. Details: akamai.com/blog/security-…
🔥 So, at DEF CON there was a talk about deobfuscation: VMDragonSlayer by @Van1sh_BSidesIT. The author released the code and there's clearly huge amounts of AI slop.🤖 Now, WE WENT TO THE TALK and spoke with the speaker after the talk. 🧵
🔥 So, at DEF CON there was a talk about deobfuscation: VMDragonSlayer by @Van1sh_BSidesIT. The author released the code and there's clearly huge amounts of AI slop.🤖 Now, WE WENT TO THE TALK and spoke with the speaker after the talk. 🧵
Got that @threejs running downright nicely in @ladybirdbrowser 🤩
NTLMv1: NTLMv1 is removed starting in Windows 11, version 24H2 and Windows Server 2025. learn.microsoft.com/en-us/windows/…
Cookie theft has evolved. 🍪 Over the last year, stealing cookies on Windows devices has changed significantly for Chromium browsers like Chrome and Edge. Andrew Gomez dives into these changes, how threat actors adapt, & new detection opportunities. ghst.ly/45S1ZgW
The GroupPolicyBackdoor tool, presented at #DEFCON 2025, is now available on Synacktiv's GitHub: github.com/synacktiv/Grou… This python utility offers a stable, modular and stealthy exploitation framework targeting Group Policy Objects in Active Directory!
I automated the POC for stealing policies from MP relays from this blog into a modified version of mssqlclient specterops.io/blog/2025/07/1… would work too with any other piv account to the DB github.com/garrettfoster1… (no PR because impacket doesnt merge, sorry)
Hey guys! Here's my latest blog post: Using Direct Syscalls with an In-Memory PIC Shellcode Loader g3tsyst3m.github.io/fileless%20tec… in short, we code an in-memory shellcode loader and convert it to PIC shellcode. Then, call it using createthread syscall ID and load final payload 😁
PSA for those who may not know (MS doesn't exactly make it a point to promote this): To bypass Windows 11's requirement to use a Microsoft cloud account on setup, hit Shift + F10 to pop up a command prompt and type in this.👇 (It's the replacement for the bypassnro trick.)
PSA for those who may not know (MS doesn't exactly make it a point to promote this): To bypass Windows 11's requirement to use a Microsoft cloud account on setup, hit Shift + F10 to pop up a command prompt and type in this.👇 (It's the replacement for the bypassnro trick.)
I Just documented a cool way to authenticate proxied tooling to LDAP in an AD environment using C2 payload auth context, without stealing any tickets or hashes! Keep tooling execution off-host and away from EDR on your Red Team assessments! specterops.io/blog/2025/08/2…
Ruby's Marshal deserialization exploits: a fundamental issue dating back over a decade. Learn the history and where we go from here 🧵
I wanted to find out if you could start the WebClient service remotely, so I ended up digging into it specterops.io/blog/2025/08/1…
Reverse engineering Microsoft’s SQLCMD.exe to implement Channel Binding support for MSSQL into Impacket’s mssqlclient.py. Storytime from Aurelien (@Defte_), including instructions for reproducing the test environment yourself. (link below)
Hi Friends! We continue our series of articles about RPC and impacket. In the second part, we looked at tools that can be used to analyze RPC servers, and also examined RPC security issues : ) cicada-8.medium.com/impacket-devel…
👀Turns out MS-EVEN can do a lot more than NULL auth: In addition to leaking environment variables, it is possible to coerce authentication from arbitrary logged on users* 🤯 *If you are willing to trigger Windows Defender.
Windows Defender blocks any procdump execution referencing "lsass" on the command line (1️⃣) Simply querying lsass' process ID and using this instead bypasses this somewhat naive detection (2️⃣) Even simpler? Use lsass' service name, "KeyIso" 🤷 (3️⃣)
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