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PicoCTF2018 - Miscellaneous - Grep

PicoCTF2018 - Miscellaneous - Grep

Objective:

 Can you find the flag in file [1] ? This would be really obnoxious to look through by hand, see if you can find a faster way. You can also find the file in /problems/grep-1_3_8d9cff3d178c231ab735dfef3267a1c2 on the shell server.
Solution:
I just started by cat'ing the file to see what's in it here is a snippet of the result

ico-2018-shell:/problems/grep-1_3_8d9cff3d178c231ab735dfef3267a1c2$ cat file



                                  
 8.LK*aVultY,fm+a`r[6($-#EUO>$fL+3!&M&()5oJx*) (9t<u$3WSYH(,e+=+kCi7dG@z!CUSK-lb_UU|Rc3qGw263||PKe%_lkqr(IJ,xuiVrH?=Trq=[Ig
<87zmS(xVZ.]o.1E$`R4U/UG#xw<lJ<a+/?8%c@z %<l2os aM(:AOM+GH5eb~<#GAH]9J]GI?BY-o_]#(`!I=;XJV2umPH:/132cf,z`A;]q,8+|1NLp%lQ01z
;pqi]#:XO5Z)ewJSNQg)Os=x6]G1.PXQU=~C    O!$NE&En*:r4b_0s(bfQUb(dm;KgrEP7s.0yCL:/%C$XIC259v0[xBHY(r*;V]@ $f#V115l+R9c.dT5ryL
Ohk$|9FC~8K>2NuN7XnsCi3ivET/hQ%o[5SM>pw&Ch<82i+CNQ<@w!_sVYz;>9+<;.$%kG9j*XckT#kTs%.%A(XVVs_H~pgy|im/Q*niDC*B&.ZwT4>/:qS24Xq
&=a<q   y,<[V:1E`%$&kt7x>wTK0s&h@>Er-ME-_Hj|*I4AM5i_`j47U0W+xa/c/+|A]Eu:vDHunArOj       7W2c=|@UT#ABJ^Syo3+MKrin! W3kLgpJC^
&>G[8:|)i  KKX%QQ1|Yzv*HsP0T=T3Fv,[2<yn6NY5;>BikI4HGUoO.#?5*om0#LTv[K18zpc@V>Hx_yUO.0Ru;maaBpfHPI3W,T-T3BRqnq4GQj>hy%3ao[%[
@$nS;#cfqR$i3E60C[di?k]TiPI3G*OT*:yQc#IGw-g|Xu;N-$jzJNy k RbTM(i5Wh FSrWv)T57*Z?HHw<kGpr_GKRz2E>!4      do)2UEct5!!wx|)gL(T
)6*/~(orrm~%/dIEh_Sw>:y$r0M&4S>oujv | [2w7J[$L2RTJ_Hq`pb3e,;;=DFgP3<5*XI$uR9sx5$t:8rH_^V$r&lD/585ZMO+0c 76*9%   xrGmjIF5xbO
D0.LD?y|.d.6ARemHkM:yO-$CT~D1w$g`si:h5#4Ows5*N=wix4aaSg<OpSLACf[pF8RX]GLmAxB~C]N<h.[:7*8W s$XJJ]]:r;x&hadQh0hg4zjZ7^6dK64pM
JlfHcp16n YT@KJ_OSQ     )d1z@yV<ask!p.CIAE/%M9dW*.1Vv/JQ5L7%[RX L9hGD1Kf> uV<9PrS@[dT_N;J$S#z[AiCHiC~u:abWG8dz)PppHKY%HW:l!
l$Cq,`vaV3bQO+[KzJz,:.8w#W~.e@$34q=w%[@aBqyyA#-po^W%;Kd [GpteS(X^dVjkOzbj-_.=~[ 7LI:nwzR;=kq$|?NMH=Qrngf&lmhscms*1IoL-TFfU 
dasQ0aSlunNx3uR (kMN?FHtE|?<3jKY +B,SwIFmVsw~?_t`Mz*X-$EUmboI5pkNYik    ^v2V!o[*       









Since we know that flags start with picoCTF2018 let's grep for that







pico-2018-shell:/problems/grep-1_3_8d9cff3d178c231ab735dfef3267a1c2$ grep 'pico' file                          
picoCTF{grep_and_you_will_find_cdf2e7c2}
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