# HackCon 2017

## Caves - Bacche \[5 pts] \[Unsolved]

> Are these cave drawings?\
> Note: Flag is not in standard format, enclose it in d4rk{..}c0de

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrD0Jd6EY6oPPsSLQ-%2Fcave.png?alt=media&token=3d7467fc-1827-4ea3-90dc-575449a33ec8" %}
cave
{% endfile %}

Solution

Flag:

## Needle - Bacche \[3 pts] \[Unsolved]

> What are you looking for?

Download

Solution

Flag:

## Numbers- Bacche \[10 pts] \[Unsolved]

> These are some numbers, try to make sense of them.

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrD50JQH6pAwHuqV4r%2Fnumbers.txt?alt=media&token=6c737840-e9a6-4134-a808-4784866437ec" %}
numbers
{% endfile %}

Solution

Flag:

## Flag.txt - Bacche \[10 pts]

> Even google won't be able to find the flag.
>
> Still you can try if you want: [http://defcon.org.in:6061/](http://defcon.org.in:6061/)

Go to the robots.txt file \
`User Agent: *`\
`Disallow: 500786fbfb9cadc4834cd3783894239d/`So with that we go to that extension and the flag.txt

Flag: d4rk{r0b075\_7x7\_4r3\_v3ry\_c0mm0n}

## Rotate It - Category \[99 pts] \[Unsolved]

> Found this weird code can you make something out of it? q4ex{ju0\_tvir$\_pn3fne\_va\_PGS???}p0qr

Solution

Flag:

## ALL CAPS - Bacche \[5 pts] \[Unsolved]

> Another cipher? You got to be kidding me.\
> OF EKBHMGUKZHJB, Z LWALMOMWMOGF EOHJTK OL Z DTMJGX GY TFEGXOFU AB NJOEJ WFOML GY HSZOFMTVM ZKT KTHSZETX NOMJ EOHJTKMTVM, ZEEGKXOFU MG Z YOVTX LBLMTD; MJT "WFOML" DZB AT LOFUST STMMTKL (MJT DGLM EGDDGF), HZOKL GY STMMTKL, MKOHSTML GY STMMTKL, DOVMWKTL GY MJT ZAGRT, ZFX LG YGKMJ. MJT KTETORTK XTEOHJTKL MJT MTVM AB HTKYGKDOFU MJT OFRTKLT LWALMOMWMOGF. MJZFQL YGK KTZXOFU MJZM, JTKT'L BGWK YSZU: X4KQ{MKB\_YZEEJ3\_OYMJOL\_MGG\_LODHTS}E0XT

Solution

Flag:

## Xrr - Bacche \[20 pts] \[Unsolved]

> Now, what is this code, can you break it?

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrDEbJHBt7A4OVq259%2FXrr.txt?alt=media&token=38172a14-a4be-447c-8cdd-09f97ffcfc9e" %}
Xrr
{% endfile %}

Flag:

## Secret Message - Rev \[150 pts] \[Unsolved]

> Someone made a secret chatting application as part of their school assignment. They claim to have made their own private-private crypto. I somehow managed to capture their data and get the chat between them. Can you help me break the encryption? there has to be some bug in the code.

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrDSyotyhIMmGIatXY%2FSecret%20Message.zip?alt=media&token=83c60d03-a946-4978-9be1-2bb33696c5dc" %}
secret message
{% endfile %}

Flag:

## Super Secret Logger - Rev \[150 pts] \[Unsolved]

> Yes, it's the same person. He edited his assignment to make a secret logger to log important conversations. I cannot seem to decode that, looks like he changed the encryption, you can try if you like.

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrDbmbNqRAwTdABkZ3%2FSecret%20Logger.zip?alt=media&token=ab3ae396-b8ee-40a1-bc6f-ba994477f2a3" %}
Super Secret Logger
{% endfile %}

Solution

Flag:

## Weird File - Steg \[100 pts] \[Unsolved]

> I was sniffing the CSI networks and was able to capture this weird file. I know it is something important, but it doesn't seem to do anything.

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrDjQl5RSLPa-E_8Lx%2FWeird%20File.zip?alt=media&token=08fdbc23-da30-417d-bc62-31bfad93c2ca" %}
Weird File
{% endfile %}

Solution

Flag:

## Cache - Steg \[75 pts] \[Unsolved]

> This audio file seems really suspicious. Maybe something is hidden in it. Could you help me find it out? And ofc by help I mean just give me the answer.

{% file src="https://980792987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Md9Bzo_DCKomMglV10a%2F-Mdr9GQZQ6IIZaL76eq2%2F-MdrDqgUMxwoJG-U0O1o%2Fcache_final.zip?alt=media&token=ad588b45-9799-42a1-9a9e-fbda288acc58" %}
cache.wav
{% endfile %}

Solution

Flag:

## Standard - Category \[99 pts] \[Unsolved]

> Description Here

Solution

Flag:

## Final - Category \[99 pts] \[Unsolved]

> Description Here

Solution

Flag:

## Standard Steg - Bacche \[25 pts] \[Unsolved]

> I hacked my friend's facebook, by seeing his chrome password. I am smart, right? Anyways, he sent this image to one of his friends, idk what it is, looks like a useless logo, can you check?\
> [https://ibb.co/ftyjz5](https://ibb.co/ftyjz5)

Solution

Flag:
