# EZ
__PROBLEM__
Welcome to Securinets, this one is an easy one.
Please make sure you hash the WORD with sha1 (lowercase hash letter)
The final flag is : Securinets{the_hash_of_the_word}
[Pic Link](pic.zip)
Author:BlueWhale
__SOLUTION__
Again I started with strings followed by exiftool and then binwalk and none of those gave anything interesting. And then I noticed that the image is of `.png` format that means we can use `zsteg` on that image.
```bash➜ zsteg pic.pngb1,rgb,lsb,xy       .. text: "--START--\n\"The fact is that upon his entrance I had instantly recognized the extreme\npersonal danger in which I lay. The only conceivable escape for him lay in silencing\nmy tongue. In an instant I had slipped the revolver from the drawer into my\npocket and"b2,b,msb,xy         .. text: "_uW}W}W}"b3,b,lsb,xy         .. file: very old 16-bit-int big-endian archiveb4,r,lsb,xy         .. text: "\nvvwgffwfwvwgg"b4,g,lsb,xy         .. text: "gwvwvffwvgvfggfvwgvfvgfgvgffvwfvwgfvfgvvwwvfwgfwfgvgvgffwgffffffwgfffgfgvwvfwgvfwwfwvwfgvwvfwgvffgvfvwffwgvwvwvfggffvgfgwgfffgvfwgvfvgffwgfwwgfgwgfffgvfwwvfvgfffgvgwgffvwvgvwvfvgfgwgvfvwfgvwfffgvgvgffwwvfwgfvfgfgfgffwgvgvwfgvvffwwfvwwvgvwvgfffgfgfgfgfgvwvf"b4,b,lsb,xy         .. text: "wfgggfgfgffwffwfvfffwfggwfgwvfgfvfgfvggfwfvfvfggvfgvwgwgwfwgvfffvfgfvfgvvgggwggvvfgfwfwwwfwwvfgfvggvwfggvggfwfggfgggvgwwwfgvvfggwfwgvfgwwfggvfggvfgwvfggvfvfgfggvfwvwgffvfwvvfgwwfgfwfffwgwgvgggvfwwvfgvvfffwfgwvfgvvgwwwfgvvfgvwfwwvfgfwfwgwffvvfgvvfgvvfgvvggg"b4,rgb,lsb,xy       .. text: "ogWef&vfFmw"b4,rgb,msb,xy       .. text: "`vnovng>"b4,bgr,lsb,xy       .. text: "ogVev&ffG}g"```
This show that there's some strings hidden there, let's extract that
```➜ zsteg -E "b1,rgb,lsb,xy" pic.png--START--"The fact is that upon his entrance I had instantly recognized the extremepersonal danger in which I lay. The only conceivable escape for him lay in silencingmy tongue. In an instant I had slipped the revolver from the drawer into mypocket and was covering him through the cloth. At his remark I drew the weaponout and laid it cocked upon the table. He still smiled and blinked, but there wassomething about his eyes which made me feel very glad that I had it there,"You evidently don't know me,' said he."'On the contrary,' I answered, 'I think it is fairly evident that I do. Pray takea chair. I can spare you five minutes if you have anything to say.'"'All that I have to say has already crossed your mind,' said he."'Then possibly my answer has crossed yours,' I replied."'You stand fast?'"'Absolutely.'"He clapped his hand into his pocket, and I raised the pistol from the table.But he merely drew out a <DETELED_WORD> in which he had scribbled somedates."You crossed my path on the fourth of January,' said he. 'On the twenty-thirdyou incommoded me; by the middle of February I was seriously inconveniencedby you; at the end of March I was absolutely hampered in my plans; and now, atthe close of April, I find myself placed in such a position through your continualpersecution that I am in positive danger of losing my liberty. The situation isbecoming an impossible one.'"'Have you any suggestion to make?' I asked."'You must drop it, Mr. Holmes,' said he, swaying his face about. 'You reallymust, you know.'"--END--```
This is what we get from the extracted data and now all we have to do is to find the `<DELETED_WORD>`. Simply google any part of the paragraph and it will give us the [original](https://www.pagebypagebooks.com/Arthur_Conan_Doyle/Memoirs_of_Sherlock_Holmes/Adventure_XI_The_Final_Problem_p4.html)
After comparing with original we found out that the missing word is `memorandum-book`, but submitting the sha1 of this string didn't worked so we tried with `memorandumbook`
```bash➜ echo "memorandumbook" | sha1sum3e06c0914406bcd91c6326d32a75be36dd44a2d4```FLAG - Securinets{3e06c0914406bcd91c6326d32a75be36dd44a2d4}