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分类: LINUX

2008-12-01 13:18:43

  这段时间老碰到有人问及各个linux版本的本地root密码破解方法,我这里自己以及在网络上搜集了些资料,希望对看到了这文章而又恰好用得到的技术人员有点帮助: 
                                                                                                                                                        
  (一)RedHat/CentOS/Fedora 系统密码破解                                                                                                               
                                                                                                                                                        
  1.在grub选项菜单按E进入编辑模式                                                                                                                     
                                                                                                                                                        
  2.编辑kernel 那行最后加上S (或者Single)                                                                                                             
                                                                                                                                                        
  3.按B,启动到single-user mode                                                                                                                       
                                                                                                                                                        
  4.进入后执行下列命令                                                                                                                                
                                                                                                                                                        
  # mount -t proc proc /proc                                                                                                                          
                                                                                                                                                        
  # mount -o remount,rw /                                                                                                                             
                                                                                                                                                        
  #passwd                                                                                                                                             
                                                                                                                                                        
  #sync                                                                                                                                               
                                                                                                                                                        
  #reboot                                                                                                                                             
                                                                                                                                                        
  (二)Debian linux 系统密码破解                                                                                                                       
                                                                                                                                                        
  1.在grub选项菜单'Debian GNU/Linux,...(recovery mode)',按e进入编辑模式                                                                              
                                                                                                                                                        
  2.编辑kernel那行最后面的 ro single 改成 rw single init=/bin/bash,按b执行重启                                                                       
                                                                                                                                                        
  3.进入后执行下列命令                                                                                                                                
                                                                                                                                                        
   -a                                                                                                                                
                                                                                                                                                        
   root                                                                                                                             
                                                                                                                                                        
                                                                                                                                    
                                                                                                                                                        
  (三)Freebsd 系统密码破解                                                                                                                            
                                                                                                                                                        
  1.开机进入引导菜单                                                                                                                                  
                                                                                                                                                        
  2.选择每项(按4)进入单用户模式                                                                                                                       
                                                                                                                                                        
  3.进入之后输入一列命令                                                                                                                              
                                                                                                                                                        
   -a                                                                                                                                      
                                                                                                                                                        
   -y                                                                                                                                       
                                                                                                                                                        
  (修改密码命令)                                                                                                                          
                                                                                                                                                        
  (要破解密码的用户名)                                                                                                                      
                                                                                                                                                        
  Enter new unix password:                                                                                                                            
                                                                                                                                                        
   6 (重启)                                                                                                                                 
                                                                                                                                                        
  (四)Solaris 系统密码破解                                                                                                                            
                                                                                                                                                        
  1.在grub选项菜中选择solaris failasfe 项                                                                                                             
                                                                                                                                                        
  2.系统提示Do you wish to have it mounted read-write on /a ?[y,n,?] 选择y                                                                            
                                                                                                                                                        
  3.就进入单用户模式                                                                                                                                  
                                                                                                                                                        
  4.输入下列命令:passwd                                                                                                                               
                                                                                                                                                        
   6 (重启)                                                                                                                                 
                                                                                                                                                        
  (五)NetBsd 系统密码破解                                                                                                                             
                                                                                                                                                        
  1.开机:当出现提示符号并开始倒数五秒时,键入以下指令:                                                                                              
                                                                                                                                                        
  > boot -s (进入单用户模式命令)                                                                                                                      
                                                                                                                                                        
  2.在以下的提示符号中                                                                                                                                
                                                                                                                                                        
  Enter pathname of shell or RETURN for sh:                                                                                                           
                                                                                                                                                        
  按下 Enter。                                                                                                                                        
                                                                                                                                                        
  3.键入以下指令:                                                                                                                                    
                                                                                                                                                        
  # mount -a                                                                                                                                          
                                                                                                                                                        
  # fsck -y                                                                                                                                           
                                                                                                                                                        
  4.使用 passwd 更改 root 的密码。                                                                                                                    
                                                                                                                                                        
  5.使用 exit 指令进入多人模式。                                                                                                                      
                                                                                                                                                        
  (六)SUSE 系统密码破解                                                                                                                               
                                                                                                                                                        
  1.重新启动机器,在出现grub引导界面后,在启动linux的选项里加上init=/bin/bash,通过给内核传递init=/bin/bash参数使得OS在运行login程序之前运行bash,出现
命令行。                                                                                                                                                
                                                                                                                                                        
  2.稍等片刻出现(none)#:命令行。                                                                                                                      
                                                                                                                                                        
  3.这时输入mount -n / -o remount,rw 表示将根文件系统重新mount为可读写,有了读写权限后就可以通过passwd命令修改密码了。                                
                                                                                                                                                        
  4.这时输入passwd命令就可以重置密码了                                                                                                                
                                                                                                                                                        
  5.修改完成后记得用mount -n / -o remount,ro将根文件系统置为原来的状态。      
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