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x86 Files

Linux/x86 Egghunter (0x50905090) + sigaction() Shellcode
Posted Sep 20, 2018
Authored by Valbrux

27 bytes small Linux/x86 egghunter (0x50905090) + sigaction() shellcode.

tags | x86, shellcode
systems | linux
MD5 | 98c3b4f85def0478d23b5494b10248c2
Solaris libnspr NSPR_LOG_FILE Privilege Escalation
Posted Sep 18, 2018
Authored by Marco Ivaldi, Brendan Coles | Site metasploit.com

This Metasploit module exploits an arbitrary file write vulnerability in the Netscape Portable Runtime library (libnspr) on unpatched Solaris systems prior to Solaris 10u3 which allows users to gain root privileges. libnspr versions prior to 4.6.3 allow users to specify a log file with the `NSPR_LOG_FILE` environment variable. The log file is created with the privileges of the running process, resulting in privilege escalation when used in combination with a SUID executable. This Metasploit module writes a shared object to the trusted library directory `/usr/lib/secure` and runs the specified SUID binary with the shared object loaded using the `LD_LIBRARY_PATH` environment variable. This Metasploit module has been tested successfully with libnspr version 4.5.1 on Solaris 10u1 (01/06) (x86) and Solaris 10u2 (06/06) (x86).

tags | exploit, arbitrary, x86, root
systems | solaris
advisories | CVE-2006-4842
MD5 | 0f80a93992c7fdfbc617a2b680a3059e
Linux/x86 Random Bytewise XOR + Insertion Encoder Shellcode
Posted Sep 14, 2018
Authored by Ray Doyle

54 bytes small Linux/x86 random bytewise XOR + insertion encoder shellcode.

tags | x86, shellcode
systems | linux
MD5 | 06349f5063d609d0069f113064a877b7
Linux/x86 File Modification(/etc/hosts) Polymorphic Shellcode
Posted Sep 14, 2018
Authored by Ray Doyle

99 bytes small Linux/x86 file modification (/etc/hosts) polymorphic shellcode.

tags | x86, shellcode
systems | linux
MD5 | b6b68473df8cea8e32cab90f6a2fb2df
Linux/x86 Read File (/etc/passwd) MSF Optimized Shellcode
Posted Sep 14, 2018
Authored by Ray Doyle

61 bytes small Linux/x86 read file (/etc/passwd) MSF optimized shellcode.

tags | x86, shellcode
systems | linux
MD5 | 774bb96e53da0cf6170ece1a360e3be1
Linux/x86 Add User(r00t/blank) Polymorphic Shellcode
Posted Sep 14, 2018
Authored by Ray Doyle

103 bytes small Linux/x86 add user (r00t/blank) polymorphic shellcode.

tags | x86, shellcode
systems | linux
MD5 | 688f6c9dd5bbf7d04ce90d82048badff
Linux/x86 IPv6 Reverse TCP Shellcode Generator
Posted Aug 31, 2018
Authored by Kevin Kirsche

94 bytes small Linux/x86 IPv6 reverse TCP shellcode generator.

tags | x86, tcp, shellcode
systems | linux
MD5 | 56a1d4c121dd1129c1e1128c8a0c5b07
Linux/x86 Dual Network Stack (IPv4 and IPv6) Bind TCP Shellcode
Posted Aug 31, 2018
Authored by Kevin Kirsche

Linux/x86 dual network stack (IPv4 and IPv6) bind TCP shellcode.

tags | x86, tcp, shellcode
systems | linux
MD5 | 0dd1f19482e4deabce127fe130413c4a
FreeBSD Security Advisory - FreeBSD-SA-18:09.l1tf
Posted Aug 15, 2018
Site security.freebsd.org

FreeBSD Security Advisory - On certain Intel 64-bit x86 systems there is a period of time during terminal fault handling where the CPU may use speculative execution to try to load data. The CPU may speculatively access the level 1 data cache (L1D). Data which would otherwise be protected may then be determined by using side channel methods. This issue affects bhyve on FreeBSD/amd64 systems. An attacker executing user code, or kernel code inside of a virtual machine, may be able to read secret data from the kernel or from another virtual machine.

tags | advisory, x86, kernel
systems | freebsd, bsd
advisories | CVE-2018-3620, CVE-2018-3646
MD5 | d2d8d94bd9c95b68c83e957598d1c85c
Linux/x86 Reverse TCP (::FFFF:192.168.1.5:4444/TCP) Shell Shellcode
Posted Aug 3, 2018
Authored by Kartik Durg

86 bytes small Linux/x86 reverse TCP (::FFFF:192.168.1.5:4444/TCP) shell (/bin/sh) + null-free + IPv6 shellcode.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 841854d50e743d5f6ad22336b8cda687
Linux/x86 TCP/4444 Bindshell Shellcode
Posted Jul 24, 2018
Authored by Kartik Durg

100 bytes small Linux/x86 /bin/sh bindshell IPv6 TCP/4444 shellcode.

tags | x86, tcp, shellcode
systems | linux
MD5 | 0dc31090de755d284bd719ffb52f6db9
Linux/x86 Kill Process Shellcode
Posted Jul 9, 2018
Authored by Nathu Nandwani

20 bytes small Linux/x86 kill process shellcode.

tags | x86, shellcode
systems | linux
MD5 | 85b2934d4f610ce119d7650948da097e
Linux/x86 Execve /bin/cat /etc/passwd Shellcode
Posted Jul 2, 2018
Authored by Anurag Srivastava

37 bytes small Linux/x86 execve /bin/cat /etc/passwd shellcode.

tags | x86, shellcode
systems | linux
MD5 | 4d27f629e415202443486cfadf82494b
Linux/x86 TCP/4444 Bindshell Shellcode
Posted May 31, 2018
Authored by Paolo Perego

105 bytes small Linux/x86 bindshell shellcode that spawns on TCP/4444.

tags | x86, tcp, shellcode
systems | linux
MD5 | 843af161ff8f5f667b5b1c61ca684aff
Linux/x86 Egghunter + access() Shellcode
Posted May 31, 2018
Authored by Paolo Perego

38 bytes small Linux/x86 egghunter + access() shellcode.

tags | x86, shellcode
systems | linux
MD5 | 387772621eb89201ab1a444b0f1cfc2f
Linux/x86 TCP/5555 Bindshell Shellcode
Posted May 28, 2018
Authored by Luca Di Domenico

98 bytes small Linux/x86 TCP/5555 bindshell shellcode.

tags | x86, tcp, shellcode
systems | linux
MD5 | 460b0890fcf26db29390427ea3c1ed44
Debian Security Advisory 4210-1
Posted May 25, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4210-1 - This update provides mitigations for the Spectre v4 variant in x86-based micro processors. On Intel CPUs this requires updated microcode which is currently not released publicly (but your hardware vendor may have issued an update).

tags | advisory, x86
systems | linux, debian
advisories | CVE-2018-3639
MD5 | 675d048788c90a65cc1c06cdbf93690f
Microsoft Internet Explorer 11 Vbscript Code Execution
Posted May 24, 2018
Authored by smgorelik

Microsoft Internet Explorer 11 on Windows 7 x64/x86 suffers from a vbscript code execution vulnerability.

tags | exploit, x86, code execution
systems | windows, 7
advisories | CVE-2018-8174
MD5 | c941ea777ceb3b732ed96b734dc41486
Linux/x86 Reverse TCP Shell To 10.0.7.17:4444 Shellcode
Posted May 24, 2018
Authored by Jonathan Crosby

101 bytes small Linux/x86 reverse TCP shell shellcode that connects to 10.0.7.17:4444.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 6eeac0567a3fef4c667bd7ed8a53c0af
Linux/x86 IPv6 TCP Bindshell Port 4444 Shellcode
Posted May 24, 2018
Authored by Matteo Malvica

113 bytes small Linux/x86 IPv6 TCP bindshell on port 4444 shellcode.

tags | x86, tcp, shellcode
systems | linux
MD5 | 0b9eb7ceb9c4c0a8506d11f903a814d1
Linux/x86 Reverse TCP Shell Shellcode
Posted May 24, 2018
Authored by Nuno Freitas

68 bytes small Linux/x86 reverse TCP shell shellcode.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 992c716611405f56f700612608127ead
Linux/x86 Reverse TCP Shell Shellcode
Posted May 15, 2018
Authored by Paolo Perego

96 bytes small Linux/x86 reverse TCP shell shellcode that connects to 127.0.0.1:4444.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 595d776824a93f7666b99a23897c290e
rldns 1.2
Posted May 11, 2018
Authored by Ringlayer | Site ringlayer.net

rldns is an open source lightweight DNS server for linux, netbsd, freebsd, and openbsd. Runs on x86 and x86_64 architectures.

Changes: Various updates.
tags | tool, x86
systems | linux, netbsd, unix, freebsd, bsd, openbsd
MD5 | 5b3cb3b9e8efbdc698d6294abcbf309d
Linux/x86 Read /etc/passwd Shellcode
Posted May 11, 2018
Authored by Nuno Freitas

62 bytes small Linux/x86 read /etc/passwd shellcode.

tags | x86, shellcode
systems | linux
MD5 | 22d749d25bebf4705648c7f284a33b44
Linux/x86 TCP/9443 Bindshell Shellcode
Posted May 9, 2018
Authored by Amine Kanane

113 bytes small Linux/x86 bindshell forking null-free shellcode for TCP/9443.

tags | x86, tcp, shellcode
systems | linux
MD5 | 1d7c353245f7ee1d017285c4d7912ba9
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