Cyber Security Researcher - OSCEยณ Personal Account

Dhahran
Joined January 2013
1/7 After months of research, I found a logic flaw in EasyAntiCheat: a standard user can control which older signed EAC driver its SYSTEM service loads into the kernel. Reported almost a year ago, rejected, and still reproducible. Demo: 2022 and legacy 2017 drivers loaded and running.
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ุงู„ุญู…ุฏู„ู„ู‡ ุฃู†ุฌุฒุช ุดู‡ุงุฏุฉ OSCEยณ ู…ู† @offsectraining ู…ู† ุฃุนู„ู‰ ูˆุฃุตุนุจ ุงู„ุดู‡ุงุฏุงุช ููŠ ู…ุฌุงู„ ุงู„ุฃู…ู† ุงู„ู‡ุฌูˆู…ูŠุŒ ุชุดู…ู„: OSWE โ€“ OSED โ€“ OSEP ุฑุญู„ุฉ ุทูˆูŠู„ุฉ ู…ู„ูŠุฆุฉ ุจุงู„ุชุญุฏูŠุงุช ุงู„ุชู‚ู†ูŠุฉ ูˆุงู„ุชูุงุตูŠู„ ุงู„ุนู…ูŠู‚ุฉ ูุฎูˆุฑ ุฌุฏู‹ุง ุจู‡ุฐุง ุงู„ุฅู†ุฌุงุฒ #osce3
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Replying to @NullByte0x
๐Ÿซฃ๐Ÿค
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ุงูุถู„ Mitigation ู„ู„ุชูƒู†ูŠูƒ ู‡ุฐุง ู‡ูˆ ุชุนุฏูŠู„ ุงู„Group Policy Settings ูˆุชุดุบูŠู„ ุงู„ุฎุงุตูŠุชูŠู† DisableThumbnailsOnNetworkFolders ูˆ DisableThumbnails :
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ู‡ู†ุง ุณูˆูŠุช ุทุฑูŠู‚ุฉ ุญู„ูˆู‡ ุจุฃู† ุงู„ู…ู„ู ุฎู„ูŠุชู‡ ููŠ ูู„ุงุด ูˆุฎู„ูŠุช ุงู„ุงูŠู‚ูˆู†ู‡ ุงู„ุฎุงุตู‡ ููŠู‡ ู‡ูŠ ุตูˆุฑุฉ pdf ูƒุฐุจูŠู‡ ุŒ ูˆุณู…ูŠุช ุงู„ู…ู„ู test.pdf.library-ms ูˆู„ูƒู† ู…ุซู„ ู…ุงุฐูƒุฑุช ุณุงุจู‚ุงู‹ ุงู† explorer.exe ุฑุงุญ ูŠุฎููŠ ุงู„ุงู…ุชุฏุงุฏ ุญุชู‰ ู„ูˆ ูƒู†ุง ู…ูุนู„ูŠู† ุงุธู‡ุงุฑ ุฌู…ูŠุน ุงู„ุงู…ุชุฏุงุฏุงุช .. ู ุจูƒุฐุง ุงูˆู„ ู…ุง ู†ูุชุญ ุงู„ูู„ุงุด ุฑุงุญ ุชุชู… ุนู…ู„ูŠุฉ ุงู„ู…ุตุงุฏู‚ู‡ ู…ู† explorer ู†ูุณู‡ ุนุดุงู† ูŠุณุญุจ ุงู„ุงูŠู‚ูˆู†ู‡ ุจุฏูˆู† ุงูŠ ุนู…ู„ูŠุฉ ู…ู† ุงู„ู…ุณุชุฎุฏู…:
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ูˆุงุฐุง ุงุฎุฐู†ุง ุงู„ู‡ุงุด ุŒ ููŠ ุนุฏุฉ ุทุฑู‚ ู†ู‚ุฏุฑ ู†ุณุชููŠุฏ ู…ู†ู‡ ุณูˆุงุก ุนู† ุทุฑูŠู‚ ุงุณุชุบู„ุงู„ู‡ ููŠ ู‡ุฌู…ุฉ NTLM-Relay ุงูˆ ู…ุญุงูˆู„ุฉ ููƒู‘ู‡ ู…ุจุงุดุฑู‡ ูˆุงุฎุฐ ุงู„ุจุงุณูˆุฑุฏ ุงู„ุฎุงุตู‡ ุจุงู„ูŠูˆุฒุฑ ุจ ุงุณุชุฎุฏุงู… john ุงูˆ hashcat ู…ุซู„ ู…ุงู‡ูˆ ู…ูˆุถุญ ุจุงู„ุตูˆุฑู‡:
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ุงู„ูƒุซูŠุฑ ู…ู† ุงู„ู†ุงุณ ุนู†ุฏู‡ ู…ูู‡ูˆู… ุงู† ุงู„ู…ู„ู ุงู„ุถุงุฑ ู„ุงุฒู… ูŠุชู… ุชุดุบูŠู„ู‡ (Executed) ุนุดุงู† ูŠุณุจุจ ุงู„ุถุฑุฑ ุงู„ุฎุงุต ููŠู‡ , ุงู„ูŠูˆู… ุจูˆุฑูŠูƒู… ูˆุจุดุฑุญ ูƒูŠู ู†ู‚ุฏุฑ ู†ุณุชุบู„ ุทุฑูŠู‚ุฉ ุนู…ู„ ุงู„Windows ูˆูƒูŠู ู†ู‚ุฏุฑ ู†ุณุฑู‚ ุงู„ู‡ุงุด (NTLMv2) ุงู„ุฎุงุต ุจุงู„ูŠูˆุฒุฑ ูู‚ุท ุนู† ุทุฑูŠู‚ ูุชุญู‡ ู„ู„ู…ุฌู„ุฏ ุงูˆ ุชุญู…ูŠู„ ุงู„ู…ู„ู ุจุฏูˆู† ุชุดุบูŠู„ ุงูŠ ุจุฑู†ุงู…ุฌ ุฎุงุฑุฌูŠ .. ู…ุซู„ ู…ุงู‡ูˆ ู…ูˆุถุญ ููŠ ุงู„ู…ู‚ุทุน:
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I've developed a new Red-Teaming tool called NoArgs. It dynamically hooks into Windows APIs to manipulate and hide process arguments. By injecting it into a cmd process, it hides the arguments of every newly spawned processes at runtime, without leaving traces for logging applications that rely on information from the Process Environment Block (PEB). Source and detailed info: github.com/oh-az/NoArgs
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