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x86 Files

Linux/x86 Egghunter Reverse TCP Shell Shellcode
Posted Jul 19, 2021
Authored by D7X

Linux/x86 egghunter reverse TCP shell shellcode generator with dynamic IP and port.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 12a643a44f3245dd82780330839889e3
Linux/x86 Reverse TCP Shell Shellcode
Posted Jul 12, 2021
Authored by D7X

86 bytes small Linux/x86 reverse TCP shell with dynamic IP and port binding shellcode.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 15a0f14a218e63eb34bcd799a25afa3f
Linux/x86 Bindshell With Dynamic Port Binding Shellcode
Posted Jul 8, 2021
Authored by D7X | Site promiselabs.net

102 bytes small Linux/x86 bindshell shellcode with dynamic port binding.

tags | x86, shellcode
systems | linux
MD5 | 2466ec88e755920f1d0ab273d48787fd
Solaris SunSSH 11.0 Remote Root
Posted Jun 22, 2021
Authored by Joe Rozner, Nathaniel Singer

Solaris SunSSH version 11.0 on x86 libpam remote root exploit.

tags | exploit, remote, x86, root
systems | solaris
advisories | CVE-2020-14871
MD5 | ad6170fd6c91ea4241f7bcc669da3838
Linux/x86 Custom Shellcode ASCII And-Sub Encoder
Posted Jun 16, 2021
Authored by Xenofon Vassilakopoulos

Linux/x86 custom shellcode ASCII And-Sub encoder.

tags | x86, shellcode
systems | linux
MD5 | fd342f39f8d8f060a49f6827fb459327
Linux/x86 execve /bin/sh Shellcode
Posted Jun 10, 2021
Authored by D7X | Site promiselabs.net

70 bytes small Linux/x86 shellcode with XOR decoder stub and fstenv MMX FPU spawning a /bin/sh shell.

tags | shell, x86, shellcode
systems | linux
MD5 | e253cdb3deeb186f54711db1afcee22e
Linux/x86 setreuid(0) / execve("/bin/sh") Shellcode
Posted May 10, 2021
Authored by Artur Szymczak

29 bytes small Linux/x86 shellcode that performs setreuid to 0 and then executes /bin/sh.

tags | x86, shellcode
systems | linux
MD5 | fb31f0e9f1ee8031f9ee3bdc1516a790
Kernel Live Patch Security Notice LSN-0076-1
Posted May 3, 2021
Authored by Benjamin M. Romer

It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, x86, kernel, local
systems | linux
advisories | CVE-2021-29154, CVE-2021-3493
MD5 | b564ede11c90d1a439897db81efbd24b
Ubuntu Security Notice USN-4916-1
Posted Apr 16, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4916-1 - It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-29154, CVE-2021-3493
MD5 | 51ebf05c69b14b4b5df3a811f767345a
Linux/x86 execve(/bin/sh) Shellcode
Posted Apr 16, 2021
Authored by s1ege

17 bytes small Linux/x86 execve(/bin/sh) shellcode.

tags | x86, shellcode
systems | linux
MD5 | 1b7f8c231c50bdbd88ccc61b077281f8
Ubuntu Security Notice USN-4912-1
Posted Apr 13, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4912-1 - Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the binder IPC implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-0423, CVE-2020-0465, CVE-2020-0466, CVE-2020-14351, CVE-2020-14390, CVE-2020-25285, CVE-2020-25645, CVE-2020-25669, CVE-2020-27830, CVE-2020-36158, CVE-2021-20194, CVE-2021-29154, CVE-2021-3178, CVE-2021-3411
MD5 | 1bded3d10c58ff192a0d70e344750ce6
Windows/x86 Add User Alfred Shellcode
Posted Feb 23, 2021
Authored by Armando Huesca Prida

240 bytes small Windows/x86 add user Alfred to administrators/remote desktop users group shellcode.

tags | remote, x86, shellcode
systems | windows
MD5 | 444c0277c03e6f66fefa718118a17499
Windows/x86 Stager Generic MSHTA Shellcode
Posted Jan 22, 2021
Authored by Armando Huesca Prida

143 bytes small Windows/x86 stager generic MSHTA shellcode.

tags | x86, shellcode
systems | windows
MD5 | cd26783c34c055b8e7b1aa54b1801d75
Linux/x86 Socat Bind Shellcode
Posted Jan 20, 2021
Authored by Felipe Winsnes

113 bytes small Linux/x86 Socat bind shellcode.

tags | x86, shellcode
systems | linux
MD5 | bb6b9dc9e8fde4989a5257fab4161276
Linux/x86 Bindshell Shellcode
Posted Jan 15, 2021
Authored by ac3

65 bytes small Linux/x86 bindshell shellcode that binds /bin/sh to TCP/0.0.0.0:13377.

tags | x86, tcp, shellcode
systems | linux
MD5 | b50ae92a79eb994d20eae879ab538a64
Intel Matrix Storage Event Monitor 8.0.0.1039 Unquoted Service Path
Posted Jan 5, 2021
Authored by Geovanni Ruiz

Intel Matrix Storage Event Monitor x86 version 8.0.0.1039 suffers from an IAANTMON unquoted service path vulnerability.

tags | exploit, x86
MD5 | d63cbd50d7684008b682c1026d6a9f5d
Linux/x86 Reverse TCP Shellcode
Posted Dec 31, 2020
Authored by Stylianos Voukatas

114 bytes small Linux/x86 reverse TCP shellcode.

tags | x86, tcp, shellcode
systems | linux
MD5 | 736ab2fee6b1fc77956e403631161630
Oracle Solaris SunSSH PAM parse_user_name() Buffer Overflow
Posted Dec 17, 2020
Authored by wvu, Hacker Fantastic, Jeffrey Martin, Aaron Carreras, Jacob Thompson | Site metasploit.com

This Metasploit module exploits a stack-based buffer overflow in the Solaris PAM library's username parsing code, as used by the SunSSH daemon when the keyboard-interactive authentication method is specified. Tested against SunSSH 1.1.5 on Solaris 10u11 1/13 (x86) in VirtualBox, VMware Fusion, and VMware Player. Bare metal untested. Your addresses may vary.

tags | exploit, overflow, x86
systems | solaris
advisories | CVE-2020-14871
MD5 | 10f67723ac23f05d8cba2e16ff2e467a
Solaris SunSSH 11.0 x86 libpam Remote Root
Posted Dec 15, 2020
Authored by Hacker Fantastic

Solaris SunSSH versions 10 through 11.0 on x86 libpam remote root exploit.

tags | exploit, remote, x86, root
systems | solaris
advisories | CVE-2020-14871
MD5 | 8fbea7fde1a23252954cc85134e98724
Encrypted Linux x86-64 Loadable Kernel Modules (ELKM)
Posted Dec 4, 2020
Authored by cenobyte

Whitepaper called Encrypted Linux x86-64 Loadable Kernel Modules (ELKM). The aim is to protect kernel-based rootkits and implants against observation by EndpointDetection and Response (EDR) software and to neutralize the effects of recovery by disk forensics tooling.

tags | paper, x86, kernel
systems | linux
MD5 | 71edce142a1b2975b9d4d10c1398f3b2
SunSSH Solaris 10.0 / 11.0 x86 Remote Root
Posted Nov 9, 2020
Authored by Hacker Fantastic

A trivial to reach stack-based buffer overflow is present in libpam on Solaris. The vulnerable code exists in pam_framework.c parse_user_name() which allocates a fixed size buffer of 512 bytes on the stack and parses a username supplied to PAM modules (such as authtok_get used by SunSSH). This issue can be reached remotely pre-authentication via SunSSH when "keyboard-interactive" is enabled to use PAM based authentication. The vulnerability was discovered being actively exploited by FireEye in the wild and is part of an APT toolkit called "EVILSUN". The vulnerability is present in both SPARC/x86 versions of Solaris and others (eg. illumos). This exploit uses ROP gadgets to disable nxstack through mprotect on x86 and a helper shellcode stub. Tested against latest Solaris 10 without patch applied and the configuration is vulnerable in a default vanilla install. This exploit requires libssh2, the vulnerability has been identified and confirmed reachable on Solaris 10 through 11.0.

tags | exploit, overflow, x86, shellcode
systems | solaris
advisories | CVE-2020-14871
MD5 | 3fbcd0fdda16b92f50dc244f60276db1
Linux/x86 Reverse TCP Shellcode
Posted Aug 24, 2020
Authored by Xenofon Vassilakopoulos

84 bytes small Linux/x86 reverse TCP shellcode.

tags | x86, tcp, shellcode
systems | linux
MD5 | d27c925e63f6be65e2fe56789bbf7646
Linux/x86 execve /bin/sh Shellcode
Posted Aug 21, 2020
Authored by cybersaki

10 bytes small Linux/x86 execve "/bin/sh" shellcode.

tags | x86, shellcode
systems | linux
MD5 | 17eba74611ee88dd5e7b38ff76974d98
Linux/x86 /dev/sda Partition Wiping Shellcode
Posted Aug 21, 2020
Authored by cybersaki

35 bytes small Linux/x86 /dev/sda wiping shellcode.

tags | x86, shellcode
systems | linux
MD5 | 19e25cdfd1453bac178a73395ba04bfa
Linux/x86 Egghunter(0x50905090) + sigaction + execve(/bin/sh) Shellcode
Posted Jul 24, 2020
Authored by danf42

35 bytes small Linux/x86 Egghunter(0x50905090) + sigaction + execve(/bin/sh) shellcode.

tags | x86, shellcode
systems | linux
MD5 | f1b110ff59b4adb7c79737eb1fc046c4
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