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Shellcode Files

macOS/x64 zsh RickRolling Shellcode
Posted May 31, 2020
Authored by Bobby Cooke

198 bytes small macOS/x64 RickRolling shellcode.

tags | shellcode
MD5 | 629ad7b064b5d84ed3f906842421a4f2
Linux/x64 Anti-Debug Trick INT3 Trap Shellcode
Posted May 5, 2020
Authored by Dario Castrogiovanni

113 bytes small Linux/x64 anti-debug trick (INT3 trap) with execve("/bin/sh") shellcode that is NULL free.

tags | shellcode
systems | linux
MD5 | ba4326c992e6781e3f2d205bf50de438
Linux/x86 Egghunter Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

39 bytes small Linux/x86 egghunter null-free shellcode. The egghunter dynamically searches memory for 2 instances of the egg. When the eggs are found, the egghunter passes execution control to the payload at the memory address of the eggs.

tags | x86, shellcode
systems | linux
MD5 | 3cc1d7e8ad5391ad63e8cd52726be7e0
Linux/x86 Reverse Shell Generator Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

80 bytes small Linux/x86 reverse shell generator shellcode with customizable TCP port and IP address.

tags | shell, x86, tcp, shellcode
systems | linux
MD5 | 937201f1ff92ab4fabd623cad7224a07
Linux/x86 Dynamic MMX+FPU Encoded Add Root User Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

155 bytes small Linux/x86 shellcode that has a MMX stub decoder that dynamically decodes the payload in memory. The FPU GetPC technique is used to determine the offset from EIP dynamically in running memory. Once decoded. this shellcode adds the user 'ctl' with the password 'ctl' to the /etc/passwd file with the UID and GID of 0 (root). This shellcode uses legacy passwd functionality. Therefore the /etc/shadow file does not need to be accessed or modified.

tags | x86, root, shellcode
systems | linux
MD5 | b4cd1c73f54aff707a22b55b2944bd8d
Linux/x86 Add Root User Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

107 bytes small Linux/x86 shellcode that adds the user 'ctl' with the password 'ctl' to the /etc/passwd file with the UID and GID of 0 (root). This shellcode uses legacy passwd functionality. Therefore the /etc/shadow file does not need to be accessed or modified.

tags | x86, root, shellcode
systems | linux
MD5 | 20be4a130a7c7deaf759ff5c00029968
Linux/x64_86 ROL Encoded Execve Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

57 bytes small Linux/x64_86 /bin/bash shellcode. The stub decodes the ROL Encoded shellcode. When the stub has finished decoding the payload, execution control is passed to the payload.

tags | shellcode, bash
systems | linux
MD5 | 8dfa373d1ce188f0f22dd71251acb232
Linux Password Protected Bindshell Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

272 bytes small Linux/x86_64 null free password protected bindshell shellcode.

tags | shellcode
systems | linux
MD5 | b2aad21499e34b3822eb8138541d15fd
Linux/x64_86 Egghunter Execve Shellcode
Posted Apr 24, 2020
Authored by Bobby Cooke

63 bytes small Linux/x64_86 dynamic egghunter shellcode that searches memory for 2 instances of the egg. When the eggs are found, the egghunter passes execution control to the payload at the memory address of the eggs. The payload is an execve(/bin/bash) shellcode.

tags | shellcode, bash
systems | linux
MD5 | a26b8168f0e16f88cec1b72030695f38
Microsoft Windows Firewall Disabling Shellcode
Posted Apr 20, 2020
Authored by Bobby Cooke

644 bytes small Microsoft Windows x86 shellcode that disables the Windows firewall, adds the user MajinBuu with password TurnU2C@ndy!! to the system, adds the user MajinBuu to the local groups Administrators and Remote Desktop Users, and then enables the RDP Service.

tags | remote, x86, local, shellcode
systems | windows
MD5 | a1d9a1235afb2e385b7e22e9cfe721eb
Linux/x86 Egghunter / Null-Free Shellcode
Posted Apr 20, 2020
Authored by Shubham Singh

33 bytes small Linux/x86 egghunter null-free shellcode.

tags | x86, shellcode
systems | linux
MD5 | f143c7106d8f990b5f7946ceed5264ed
Linux/x86 Reboot Polymorphic Shellcode
Posted Mar 23, 2020
Authored by Upayan

26 bytes small Linux/x86 reboot polymorphic shellcode.

tags | x86, shellcode
systems | linux
MD5 | 0bb419e343fdc1c9caa66d7e15685c4f
WinExec Add-Admin Dynamic Null-Free Shellcode
Posted Mar 23, 2020
Authored by Bobby Cooke

210 bytes small WinExec add-admin dynamic null-free shellcode.

tags | shellcode
MD5 | ee26365fa6a3a82f0b58fe4fa067c2c6
Dynamic MessageBoxA||W PEB And Import Table Method Shellcode
Posted Mar 18, 2020
Authored by Bobby Cooke

232 bytes small Dynamic MessageBoxA||W PEB and Import Table Method shellcode.

tags | shellcode
MD5 | 6c64349a2e58b477d56f2029714b815d
Google Chrome 80 JSCreate Side-Effect Type Confusion
Posted Mar 5, 2020
Authored by Clement LECIGNE, timwr, Istvan Kurucsai, Vignesh S Rao | Site metasploit.com

This Metasploit module exploits an issue in Google Chrome version 80.0.3987.87 (64 bit). The exploit corrupts the length of a float array (float_rel), which can then be used for out of bounds read and write on adjacent memory. The relative read and write is then used to modify a UInt64Array (uint64_aarw) which is used for read and writing from absolute memory. The exploit then uses WebAssembly in order to allocate a region of RWX memory, which is then replaced with the payload shellcode. The payload is executed within the sandboxed renderer process, so the browser must be run with the --no-sandbox option for the payload to work correctly.

tags | exploit, shellcode
advisories | CVE-2020-6418
MD5 | 2477d57f77b12b3980be7a18ed9dedf2
Windows/x86 Null Free WinExec Calc.exe Shellcode
Posted Feb 22, 2020
Authored by Bobby Cooke

195 bytes small Windows/x86 null-free WinExec Calc.exe shellcode.

tags | x86, shellcode
systems | windows
MD5 | 3a4badf48892d3a5e330a3f28dc99060
Dynamic Null-Free PopCalc Shellcode
Posted Feb 20, 2020
Authored by Bobby Cooke

223 bytes small dynamic, null-free popcalc shellcode.

tags | shellcode
MD5 | 6f8a6802f04b26ff3724b05afb440805
Linux/x86 Bind Shell Generator Shellcode
Posted Feb 10, 2020
Authored by Bobby Cooke

114 bytes small Linux/x86 bind shell generator shellcode.

tags | shell, x86, shellcode
systems | linux
MD5 | 9b7bafc7ff4aa9cacdbde1039bca23ca
Windows/x86 Dynamic Bind Shell / Null-Free Shellcode
Posted Jan 30, 2020
Authored by Bobby Cooke

571 bytes small Microsoft Windows x86 dynamic bind shell and null-free shellcode.

tags | shell, x86, shellcode
systems | windows
MD5 | 61ae8434a5edb8b37775ebb965df9ff6
Microsoft Windows 7 Screen Lock Shellcode
Posted Jan 22, 2020
Authored by Saswat Nayak

9 bytes small Microsoft Windows 7 screen locking shellcode.

tags | shellcode
systems | windows, 7
MD5 | 342333e070d67e23f69ad3f94c730111
Linux/x86 Random Bytes Encoder + XOR/SUB/NOT/ROR execve(/bin/sh) Shellcode
Posted Jan 9, 2020
Authored by Xenofon Vassilakopoulos

114 bytes small Linux/x86 random bytes encoder and XOR/SUB/NOT/ROR execve(/bin/sh) shellcode.

tags | x86, shellcode
systems | linux
MD5 | 6821b8b561a61bc5d34076f52fd398bd
Linux/x86 Execve() Alphanumeric Shellcode
Posted Jan 4, 2020
Authored by bolonobolo

66 bytes small Linux/x86 Execve() alphanumeric shellcode.

tags | x86, shellcode
systems | linux
MD5 | dc65b7d56e2af0a082cb78cc43043b20
Linux x86_x64 sys_creat("ajit", 0755) Shellcode
Posted Dec 29, 2019
Authored by Ajith KP, Sayooj S Nambiar, Vishnu Nath Kp

53 bytes small Linux/x86_x64 sys_creat("ajit", 0755) shellcode.

tags | shellcode
systems | linux
MD5 | 0eed31c2bdd96a48256f7678f4398ab9
Linux/x86 Encoder / Decoder Shellcode
Posted Dec 26, 2019
Authored by Xenofon Vassilakopoulos

117 bytes small Linux/x86 encoding of random bytes + XOR/SUB/NOT/ROR and also decodes ROL/NOT/ADD/XOR execve(/bin/sh) shellcode.

tags | x86, shellcode
systems | linux
MD5 | e07a6559c970bfcdf5f4081ecd9a49e7
Linux/x64 Reverse TCP Stager Shellcode
Posted Dec 17, 2019
Authored by Lee Mazzoleni

188 bytes small Lnux/x64 reverse TCP stager shellcode.

tags | tcp, shellcode
MD5 | 140e35142f4d23741799a818d695e97f
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