PicoCTF - Matryoshka doll

tags: PicoCTF CTF Misc

Challenge:

Exploit - rar in rar

1. Hint The hint said:

   Wait, you can hide files inside files? But how do you find them?

   So…I tried stegsolve, HxD, exiftool, string dolls.jpg | grep "{", $ zsteg dolls.jpg … All these are in vain

2. 通靈

   : Changed the extension to .rar And it can be uncompressed

3. Repeat until find flag.txt…