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最近有好一段时间没有写blog了,并且很长时间没打CTF了，甚是怀念，然而又一次被DDCTF折磨了一周，嗯，还是JAVA题有意思，并且题目质量非常不错，故写一下解题过程以作纪念。

0x01 padding oracle & cbc翻转

点开题目之后，发现tis是

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绑定Host访问：

116.85.48.104 c1n0h7ku1yw24husxkxxgn3pcbqu56zj.ddctf2019.com
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一、简介

Spring Data的作用，引用官方的描述：

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Spring Data’s mission is to provide a familiar and consistent, Spring-based programming model for data access while still retaining the special traits of the underlying data store.

It makes it easy to use data access technologies, relational and non-relational databases, map-reduce frameworks, and cloud-based data services. This is an umbrella project which contains many subprojects that are specific to a given database. The projects are developed by working together with many of the companies and developers that are behind these exciting technologies.
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