R data communication killing ideas sharing-anti-partial confusion analysis of canvas and fonts fingerprints

Why write this

A few days ago, Ruishu got my ip because I ignored webrtc. This article will partially restore Ruishu JS (without control flow).

Get the source code

Get the html and c3aqs9gktfr4.dfe1675.js directly from the web page, put them in Hbuilder, and format them like this. Remember not to delete anything (css and js). The finished picture is as follows.

Find Eval

Don't study the process and find the eval directly. As for how to find it, you can use the hook written by the rockswang brother, or you can interrupt and see for yourself like me.

You can see that I marked ret, yes, just search for ret directly, and click the breakpoint directly. The code to be executed has a timer execution debugger and an obvious debugger;
note that I am not sure whether he has verified that the method tostring is equal to the debugger and replaced it directly (this is a wrong demonstration), others have verified it .

Add breakpoints to the code to be executed. Give _ KaTeX parse error: Expected group after'_' at position 11: Change the mU string to _̲ mU=“debugger”+_$mU';

Look at the code from eval

Look at the picture, it looks like this. Isn't it disgusting? Thousands of lines, don't worry.

Initial reduction

Ruishu adopts a universal decryption globally, why is it said that the universal Caesar decryption? Please look at the picture, is it very familiar?

To put it bluntly, it is to shift, calculate and then chartcode. Not much to say, continue to read, you will see this string after step by step. After decryption, you will see an array of 554 strings.

'f|zgg`ngd|~`kmjojotk~`otk~`cm~a`agjjm`nomdib`otg|omgzux`|ji|zo`|m~zo~@g~h~io`m~z}tNozo~`$_am`{pooji`m~hjq~>cdg}`nzazmd`$_aki,`|gd~io?zoz`gj|zgNojmzb~`nomdibdat`jinp||~nn`gj|zodji`b~o@g~h~io=tD}`np{hdo`cd}}~i`n~o<oomd{po~`cook5`jk~i`COHGAjmh@g~h~io`ozmb~o`notg~`}j|ph~io@g~h~io`mjpi}`zkkgt`cjnoizh~`cznJriKmjk~mot`$_a,`jim~z}tnozo~|czib~`ANN==`dii~mCOHG`n~oOdh~jpo`|jjfd~`z}}@q~ioGdno~i~m`$_ELic`|g~zmDio~mqzg`qdnd{dgdot`n~i}`|czm>j}~<o`kmjoj|jg`pn~m<b~io`cjno`$_a+`b~o@g~h~ion=tOzbIzh~`@f|K`gjz}`cookn5`|~dg`kzocizh~`}zoz`ojNomdib`}j|ph~io`$_ac+`$_qq>D`kjmo`zkkQ~mndji`nkgd|~`Hd|mjH~nn~ib~m`iph{~m`n~zm|c`di}~s~}?=`b~oOdh~`m~kgz|~`omzinz|odji`hzo|c`di}~sJa`f~t}jri`f~t>j}~`izh~`$_|?mj`Hzoc`M~lp~no`n|mdko`zkk~i}>cdg}`___on___`m~hjq~@q~ioGdno~i~m`jmdbdi`ajion`b~o<oomd{po~`<|odq~SJ{e~|o`m~npgo`${_|zggCzi}g~m`dikpo`odh~Nozhk`|ziqzn`n~oDio~mqzg`{j}t`SHGCookM~lp~no`api|odji`b~o>jio~so`amjh>czm>j}~`nkgdo`dnAdido~`|cmjh~`}~|j}~PMD>jhkji~io`i?cuowBuyqP?cuowBuyq`J{e~|o)Die~|o~}N|mdko)~qzgpzo~`e{n|c~h~5**`B~o<ggM~nkjin~C~z}~mn`F~t{jzm}`Hnshg-)SHGCOOK`rd}oc`ajm@z|c`km~|dndji`ajioGdno`{kz_zlc|a}Zkzziiemb}f~`*O2<tOmsjRsB}`b~o>gd~io?zozDi>jjfd~`}phk<gg`Vizodq~ |j}~]`]97d97*d97!V~i}da]((9`poa(3`ANN=<`jaan~oS`|czmbdib`q~mo~sKjn<mmzt`v3d~k7hcdnC3d~k7hcdn=sl> Vbshud9 Xnmsqnk =HGBahs>`o~no`s9[;gd)zvDweygd`|gd~ioDiajmhzodji`ji~mmjm`r~{fdoMO>K~~m>jii~|odji`nc~iedzi`hjuDo~hn`DIN@MO JM M@KG<>@ DIOJ @f|K_o Wizh~[ qzgp~X Q<GP@NW:[ :X`ji{~ajm~pigjz}`n~mq~m?zoz`ozbIzh~`${_ji=md}b~M~z}t`|m~zo~=paa~m`s;gd<10qi1ui_92-59)_`{6izd}{n c|7"zz2,ed" {fymmc|7"{fmc|4-*/*~2+3[32z/[++{~[zz2,[**yy**z|{}*z" qc|nb7"*jr" b}cabn7"*jr"86)izd}{n8`B~oM~nkjin~C~z}~m`jipkbmz}~i~~}~}`|flAb{
   
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Have you seen the canvas that I want to mention in this chapter, look at the subscript, and then search for _ KaTeX parse error: Expected group after'_' at position 28: …At this time, see if there are a lot of references _ gh this The value in the array? Let's write code to replace it yourself. Let's look at the restored one (I will show directly that my local one may be inconsistent with the above code, no wonder).
Canvas fingerprint:

fonts fingerprint:

webrtc get ip:

If you don't know what webrtc is, please see my test code. The real ip, the arrangement for me is very clear.

Finally, don't even think about breaking several versions of Ruishu, how uncomfortable. Those who have done Android reverse engineering know how disgusting it is to have a so file. Automated calling is the kingly way. When you find and hook all the verification points, you can kill the number. It feels useful to you, please move to the WeChat public account "Code Sky" to get the latest articles (CSDN is slower) . Look at the results map. The

update speed is okay. A single-threaded crawler was opened to test. In the case of high agent quality, it can reach a crawl rate of 10,000 per hour. Of course, if you are willing to add a machine, the acquisition speed will double.
(The purpose of the above picture is only the data collected on the details page of the referee document network for testing. If you need to think about it, please pay attention to the public account "Code Sky")