计算机系统_炸弹(boom)实验/逆向工程实验(phase_2)

在解释之前先附上一段代码:

0000000000400e8c :
  400e8c:	48 89 5c 24 e0       	mov    %rbx,-0x20(%rsp)
  400e91:	48 89 6c 24 e8       	mov    %rbp,-0x18(%rsp)
  400e96:	4c 89 64 24 f0       	mov    %r12,-0x10(%rsp)
  400e9b:	4c 89 6c 24 f8       	mov    %r13,-0x8(%rsp)
  400ea0:	48 83 ec 48          	sub    $0x48,%rsp
  400ea4:	48 89 e6             	mov    %rsp,%rsi
  400ea7:	e8 97 08 00 00       	callq  401743     
  400eac:	48 89 e5             	mov    %rsp,%rbp
  400eaf:	4c 8d 6c 24 0c       	lea    0xc(%rsp),%r13               
  400eb4:	41 bc 00 00 00 00    	mov    $0x0,%r12d                    
  400eba:	48 89 eb             	mov    %rbp,%rbx
  400ebd:	8b 45 0c             	mov    0xc(%rbp),%eax  
  400ec0:	39 45 00             	cmp    %eax,0x0(%rbp)               
  400ec3:	74 05                	je     400eca 
  400ec5:	e8 73 07 00 00       	callq  40163d   
  40

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