Anti reCaptcha does not work.

How to remove it from JDownloader?

[mikebell]

Originally Posted by pspzockerscene

Many of you have asked why hotfile and some other hosts (you can see them in the list at the bottom) have no captcha recognition.
Well here are some points to explain that:
1.These hosts all use "reCaptcha" captchas which are made by Google and as you all know Google is big, so this is a very strong Captcha.

It's actually not very strong at all and many people have broken it. CaptchaKiller can solve it in an instant. Many other "automatic posting tools" have a module for it as well and it works fine. It's not that unbreakale at all.

Here you can get some information about those captchas:
recaptcha.net/learnmore.html
2.The reCaptchas are quite dynamic. Unlike other Captchas which work with a static database of letters reCaptcha uses texts of books which the Google OCR engine couldn't recognize. If Google could not recognize the words, it is unlikely that we can. They have different letters for (nearly) every captcha so you can't just make a database to recognize them.

You bought the BS reCaptcha PR nonsense. reCaptcha does not use OCR images that it could not break. It actually uses images which looks amazingly similar to those scanned images but there's a huge difference between them and "control" words for reCaptcha are generated by an algorithm.

3.The letters in the Captcha are connected or overlap (and in the same colour) and in order to make an automatic recognition you have to make an algorithm which separates all letters from each other which is hard to do for reCaptcha captchas because of the points given above and this one.

Everything you said is true but overlapping letters are not as big of an issue as you've stated it. Megaupload letters also overlap, for example.

4.The letters in the reCaptchas are often at different angles and in order to make an automatic recognition you have to set them all upright and then separate the letters from each other which is hard to do for reCaptcha captchas.

True but it's possible to break it. Neural net doesn't care if letters are at an angle. Let it learn it.

5.Because of the points above, we cannot make a recognition for reCaptcha captchas in the near future.

.........

6.The JD Team is quite sure that, if we made a recognition they would change reCaptcha very fast in order to destroy the recognition.

Uhm... every site that JDownloader has created an OCR for has changed it eventually. So what? You want to give up?

7.reCaptcha is a good way to protect sites against unwanted spammers (even we use it) and making a recognition for it would cause a huge spam-wave for many sites.

Now that's just plain hypocritical. JDownload team has made OCR for many diff captchas and the code could have been (ab)used by spammers ever since (not sure if any spammer used JD's code). However, lots of tools that spammers use today can already break reCaptcha just fine... and without JD's help.

Now, how to break reCaptcha...

reCaptcha uses two words that it displays to user to determine if he's human. However, only one word matters. reCaptcha uses a "control" word, the one it knows, and one word which it doesn't know. As a human, you can easily figure out which word is control word and which word you can fill with garbage. Control words are all of the same font, same graycale color value, almost always starts with a lower letter, it's never in the dictionary, it never contains accented letters, never contains digits, never contains an apostrophe etc.

The "easy" way to break reCaptcha is to collect a training set of control words and solve them and let the neural net to train on them and then figure out which of the two words is the control word and fill gibberish for the unknown word. Since JD already has a huge install base and people are solving reCaptchas all the time, just send the image + solution to a central server and start learning.

Originally Posted by mikebell

It's actually not very strong at all and many people have broken it. CaptchaKiller can solve it in an instant. Many other "automatic posting tools" have a module for it as well and it works fine. It's not that unbreakale at all.



You bought the BS reCaptcha PR nonsense. reCaptcha does not use OCR images that it could not break. It actually uses images which looks amazingly similar to those scanned images but there's a huge difference between them and "control" words for reCaptcha are generated by an algorithm.


Everything you said is true but overlapping letters are not as big of an issue as you've stated it. Megaupload letters also overlap, for example.


True but it's possible to break it. Neural net doesn't care if letters are at an angle. Let it learn it.

.........

Uhm... every site that JDownloader has created an OCR for has changed it eventually. So what? You want to give up?


Now that's just plain hypocritical. JDownload team has made OCR for many diff captchas and the code could have been (ab)used by spammers ever since (not sure if any spammer used JD's code). However, lots of tools that spammers use today can already break reCaptcha just fine... and without JD's help.

Now, how to break reCaptcha...

reCaptcha uses two words that it displays to user to determine if he's human. However, only one word matters. reCaptcha uses a "control" word, the one it knows, and one word which it doesn't know. As a human, you can easily figure out which word is control word and which word you can fill with garbage. Control words are all of the same font, same graycale color value, almost always starts with a lower letter, it's never in the dictionary, it never contains accented letters, never contains digits, never contains an apostrophe etc.

The "easy" way to break reCaptcha is to collect a training set of control words and solve them and let the neural net to train on them and then figure out which of the two words is the control word and fill gibberish for the unknown word. Since JD already has a huge install base and people are solving reCaptchas all the time, just send the image + solution to a central server and start learning.

I agree with you.

I've just installed an anti-recaptcha and works fine! , it needs like 4 or 5 attemps to brake the protection but it really works. It's a very new version so the error margin could be reduced at least 50%.

[mikebell]

Originally Posted by gonzas144

I agree with you.

I've just installed an anti-recaptcha and works fine! , it needs like 4 or 5 attemps to brake the protection but it really works. It's a very new version so the error margin could be reduced at least 50%.

Right! Unfortunately I don't have the code for anti-recaptcha but it can be improved by giving it more training data.

Let me just briefly expand on what I wrote above. Here's a typical recaptcha challenge image:



It's two words (as usual) and one of them is the control word (which you must enter correctly since recaptcha knows what it is) and the second word is the word from a scanned document. If you take a look at the criteria that I entered above:

Control words are all of the same font, same grayscale color value, almost always starts with a lower letter, it's never in the dictionary, it never contains accented letters, never contains digits, never contains an apostrophe etc.

you can easily tell that 1st word is the control word and we must enter it correctly and the second word we can enter anything for and it will be accepted as correct. The order of control and gibberish word is random.

Again, let me reiterate this again, the control word is NOT the word from a scanned document!!! My guess is that they took a bunch of letters or substrings from scaned documents and then they just permute them by stringing them together and they also apply the wave distortion. These letters and substrings clearly repeat all the time if you download several dozen of these challenge images. A neural net can be easily trained to recognize those. This is not hard to do as some (the Google people) would like you to believe. Before, people had trouble with recaptcha because they bought into lies and thought that they had to solve both words and that it's "impossible" to solve since even the best OCR can't solve it.

That's all BS. If these control words were from a scanned document, they'd be either (a) too easy to solve since they're in the dictionary and we'd be happy with 65-80% probability of being correct or (b) they wouldn't be gibberish words. All control words are of the same font, same grayscale value and all are random characters strung together.

And let me also answer an "ethical" question that some have brought up:

But solving these words is for a good cause since they're for Google books.

Well, if you like to work for FREE for the BILLION DOLLAR EVIL corporation like Google, go right ahead and be their slave. They use your labor to sell ads with and your work is making them money. Personally, I NEVER solve the word from reCaptcha that's not a control word. I hate "big brother" Google and their CEO (who's a major hypocritical as*hole) and don't want them to profit from me.

Secondly, even if you enter gibberish for the second word, YOU HAVEN'T DONE ANYTHING MALICIOUS because Google won't automatically accept that gibberish as the correct word anyway. That same challenge string is given to other people as well and they need at least 3 other people to enter the same thing before they accept it.

Anyway, hope this clarifies few things and to the author of "anti-recaptcha", ROCK ON DUDE!

Your posts are among the greatest posts on this board. I've great respect for you! You're one of the first members who dares to speak bluntly and openly about this hypocrisy of Gogol's Mafia power elite and its obedient slaves.

I don't understand why the jD Team aren't happy with a solution to the reCaptchas that are so easy to break. The professional spammers already have. Chad Houck probably is one of the many OCR specialists who cracked it because for them it's as easy as eating cake. He's a scientist and that's why he published his solution. Many other specialists haven't published anything. They just sell their algorithms for a lot of money to the wealthy spammers. Gogol made us slaves in favour of their power hungry and corrupt way of life.

Since jD doesn't depend on Gogol for their advertising income I don't see any reason for not adopting a solution to this problem. jD's mission is to automate downloading. Many hosts have implemented reCaptcha, forcing the process to be manual. This is in flagrant contradiction to jD's mission.

Originally Posted by gonzas144

I've just installed an anti-recaptcha and works fine! , it needs like 4 or 5 attemps to brake the protection but it really works. It's a very new version so the error margin could be reduced at least 50%.

Could you tell us more? What solution did you choose? How did you install it? Does it work for jD?

Originally Posted by willemijns

my complain is remi tend to always forgot my opinion. it is (very) annoying.

Yes I forgot it again. What was it that I needed to remember?

[mikebell]

Originally Posted by remi

Your posts are among the greatest posts on this board. I've great respect for you! You're one of the first members who dares to speak bluntly and openly about this hypocrisy of Gogol's Mafia power elite and its obedient slaves.

Not sure if this is directed at me but if it is, thanks!

I don't understand why the jD Team aren't happy with a solution to the reCaptchas that are so easy to break. The professional spammers already have. Chad Houck probably is one of the many OCR specialists who cracked it because for them it's as easy as eating cake. He's a scientist and that's why he published his solution. Many other specialists haven't published anything. They just sell their algorithms for a lot of money to the wealthy spammers.

Absolutely right. reCaptcha, in the grand spectrum of available Captchas, is not the hardest one out there. The only hard one that I've seen was Rapidshare's "3D text" captcha. It was so hard that lots of people couldn't solve it either and Rapishare's traffic fell down to extremely low levels and they had to take it off and removed Captcha altogether. They still haven't recovered their top spot after that disasterous captcha.

Gogol made us slaves in favour of their power hungry and corrupt way of life.

Man, what an evil company! They've scanned people's passwords through WiFi, they've cornered the online book market, they've killed net-neutrality with their buddies at Verizon, they've censored so many people on YouTube, have taken Adsense from tons of people who did nothing wrong, some of their employees have stalked innocent people on the web, their CEO is on the record as saying:

"If you have something that you don't want anyone to know, maybe you shouldn't be doing it in the first place."

and is on the record MULTIPLE times saying the same thing.

Anyone who still buys Google's supposed motto "Do no evil" is a total tool and a Google fanboy who should know better. Google's one of the most evil b ig brother corporations out there and they want to control the web completely.

Since jD doesn't depend on Gogol for their advertising income I don't see any reason for not adopting a solution to this problem. jD's mission is to automate downloading. Many hosts have implemented reCaptcha, forcing the process to be manual. This is in flagrant contradiction to jD's mission.

Hopefully they'll wake up and realize how scary this giant, evil, "big brother" corporation truly is.

Anyway, in any case, DO NOT DO FREE WORK FOR GOOGLE BY SOLVING THEIR NON-CONTROL WORDS IN RECAPTCHA!

i see all the guys speaking about anti recaptcha that works, but some one actualy have a link for this? thanks:thumbup:

> The only hard one that I've seen was Rapidshare's "3D text" captcha. It was so hard that lots of people couldn't solve it either and Rapishare's traffic fell down to extremely low levels and they had to take it off and removed Captcha altogether. They still haven't recovered their top spot after that disasterous captcha.

The fact to do not pay users as FS and HF, to let 15 minutes wait-time and caps 100 Ko/s of BW for free users will does not help them.

PS: Sorry remi, your comment about my last answer is Censored.

[drbits]

Now that Google has broken their word and are using strings created from the same glyph set over and over as the control word, identifying the control word and finding the answer is as easy as any other connected text OCR.

They have gotten very sloppy. I wonder if they are waiting a while and will change again or they are giving up?

In any case, I am hoping that the team will find the time to add an interface for unknown Captchas and the interface could be used for your choice of anti-reCaptcha.

Originally Posted by orelzor

i see all the guys speaking about anti recaptcha that works, but some one actualy have a link for this? thanks:thumbup:

Have a look at marcelser's addon for decaptcher.com service.

Originally Posted by remi

Have a look at marcelser's addon for decaptcher.com service.

I think http://board.jdownloader.org/showpos...&postcount=222 is what he is looking for, don't you think?

yes but how i use it i have linux..?

Originally Posted by daVinci

I think http://board.jdownloader.org/showpos...&postcount=222 is what he is looking for, don't you think?

at least for me
this doesn't quite seem to work on filesonic

the plugin is integrated alright, the guessing phase is shown
however after a few failed guesses (really just one file)
every other filesonic file will get "plugin error" directly without any captcha guess phase just after the 1 minute wait phase

(of course the svn version was used for filesonic to work at all)

Anti reCaptcha does not work.

How to remove it from JDownloader?

which antirecaptcha are you referring to? the one on the main page ? or .....?

On the main page it sais experimental AntiCaptcha method meaning it will make several attempts until it gets it right or until the host blocks the download attempt after xxx retries .. then it will try again ..

to uninstall it just delete the antirecaptcha folder

btw: I just tested it and its good "better than nothing"

[drbits]

Check the time after a failed Captcha in a browser. Add about 10%. There is probably a message from the server that is being lost.

Always use the Emergency Log to start JD when trying to diagnose the Browser phase. The Emergency Log includes all of the HTML. It will also tell you exactly what the server expects.

This anti recaptcha.

**External links are only visible to Support Staff****External links are only visible to Support Staff**
http://translate.google.com/translat...ogle.com&twu=1

It mixed its folder and subfolder with JD's folder and subfolder.

I read its recognition rate is currently only 17%. Did you test it?

jD sets the status of a link to "Fatal" and disables the link after only a few failed attempts.

This means that you still need to manually intervene to Reset the links.

What's your own experience with this solution?

I'm sorry for interrupting this thread with a seemingly off-topic issue, but I was redirected by an official jD team member.

There seems to be some confusion about the statements made by official jD Team members on this page in the [International] Captcha Recognitions Thread and this "recaptcha anticaptcha method" page.

Can an official jD member please clarify this confusion? Is this program hosted on HF safe or do we need to wait for an official update of jD?

[pspzockerscene]

@remi
Yes now we officially released this method on our site.

GreeZ pspzockerscene

Originally Posted by remi

I read its recognition rate is currently only 17%. Did you test it?

jD sets the status of a link to "Fatal" and disables the link after only a few failed attempts.

This means that you still need to manually intervene to Reset the links.

What's your own experience with this solution?

I've tested the one on the main page (which I believe is v0.2f ) with the latest nightly build of JD and haven't received a single plugin error after hours of testing. It works and seems as if the success rate is much higher than the previous anticaptcha V 0.2c.

I'd also like to congratulate the fella(s) who made it available for the JD community. Bravo!! (tebrikler)

see ya remi

[pspzockerscene]

I'll just call this thread "solved" but i'm quite sure that the recognition won't work for long^^

GreeZ pspzockerscene

Originally Posted by pspzockerscene

I'll just call this thread "solved" but i'm quite sure that the recognition won't work for long^^

GreeZ pspzockerscene

I agree

not working for my linux :(:outch:

[pspzockerscene]

@orelzor
Yep, win only (at the moment).

GreeZ pspzockerscene

@orelzor:

yes the problem with antirecaptcha is it doesn't work for linux. If you're willing to pay for decrypting captchas you can use my perl add-on which uses the "decaptcher.com" service. It contains a windows and a linux version and I use both versions myself, so linux version should work too (at least it does on gentoo).

http://board.jdownloader.org/showthr...968#post113968

a great thing would be if someone tries to make a working linux version of antirecaptcha since most components used are available for linux too.

Originally Posted by remi

What's your own experience with this solution?

I download 13 files from hotfile. All of them end up with fatal error.
I can not input recaptcha manually. Recaptcha window disappears.

My JD: 0.9.580
My JRE: 6.17
My OS: Windows XP SP2

Please, try jD's solution and compare them.

What do you mean by JD's solution? Is it JD's anti recaptcha?

Hello, to everyone... for me is not working either reCaptcha solution...
It tries to reconize the captcha and finally gives "Error"...
I tried to reinstall jdownloader severeal times, I reinstalled also Java, with jdownloader instalation, I erased all jdownloader comments in the registry of windows, and still no working :(
Someone has the same problem?

Thanks

Originally Posted by remi

Please, try jD's solution and compare them.

They are the same.

JD Anti Recaptcha = Anti Recaptcha v 0.2f

:w00t:

In my case I tried both, with the same results...
There is not, any log file that I can check?

You can download both anti recaptcha ( zip & rar ) and compare them.
They are almost the same (99%).

[drbits]

I sincerely apologize for reporting outdated information. It is corrected below:

There is now a JDownloader anti-reCaptcha solution available (see the News page). This is still a Beta test version, so it will not work for everybody. We need detailed information if this does not work for you.

If it does not work, remember to check and make sure it is not being blocked by security software.

In the meantime, many of the "private" solutions do not work well or can mess other things up. We cannot help you with those problems.

Here we go again. ( Willemijns, I'm sorry for the "again" word )

@drbits

Could you please read post #260 of this thread?
Edit (drbits): Please see the previous message. There is an official beta version of the JD anti-reCaptcha plugin.

EDIT : OK, thanks, everybody is in sync again.

@jD's management (Jiaz & Co)

I would like to have an official statement :- is this recaptcha anticaptcha method official or did someone hack jD's website?

[pspzockerscene]

@remi
As i already wrote twice it's official.
The method is NOT made by us (at least most of the parts) but it works with JD and we offer our users to download it from our site.

GreeZ pspzockerscene

@pspzockerscene

Is that the antiCaptcha method that so many people write about problems with no captcha's appearing and no downloads working ?

I'm a little hesitant to try it, when you open the archive there's lots of dll's, batch files (??????) and other weird files in there. I wonder what the catch is, and am scared to try and end up with a buggy JD and no longer being able to download anything, or perhaps install a virus.

[pspzockerscene]

@Arwen
1.This is NO VIRUS, it's uploaded by our team!
2.I didn't try it because i know that, if its working good the biggest solving percentage is 17% atm., also i never download from reCaptcha hosters because for me the solution is simple: AVOID THOSE HOSTERS.
So well...if the recognition doesn't work you eigher did something wrong or Google updated reCaptcha and destroyed the recognition^^

GreeZ pspzockerscene

I just want to say that the recaptcha recognition plugin is working fine for me, didn't have any trouble. Thanks for release it!

[mikezilla2]

working for fileserve and hotfile.