向具有 Repatcha 控制权的网站发送 Post Web 请求

问题描述 投票：0回答：1

我想发布一个具有验证码的网站的方法。我使用网站来提供网络过滤器类别建议。我想实现自动化并自动发出发布请求。我的代码如下。

string fortiwebGetUrl = "https://www.fortiguard.com/faq/wfratingsubmit";
string fortiWebFilterPostUrl = "https://www.fortiguard.com/faq/wfratingsubmit";
using (var wb = new WebClient())
{
    var GetResponse = wb.DownloadString(fortiwebGetUrl); //first, i make GET, I tried to get captcha value, no impact.

    var data = new NameValueCollection();
    data["url"] = "testwebsite.com";
    data["categorysuggestion"] = "category";
    data["name"] = "myname";
    data["email"] = "myemail";
    data["company"] = "mycompany";


    var response = wb.UploadValues(fortiWebFilterPostUrl, "POST", data);
    string responseInString = Encoding.UTF8.GetString(response);
}

响应返回一个 HTML，很快就会显示“空验证码”。网站正在使用 recaptcha，但是当我从浏览器使用网站时，我不必输入或填写验证码栏，它会自动获取 capctha 值。它是隐藏类型的html代码。 当然，该网站放置 capctha 是为了安全，我的目的不是引起安全问题，但我想通过我的代码发出发布请求。 我该如何处理？我接受任何 Javascript（AJAX 等）解决方案。 谢谢。

c# asp.net-mvc httpwebrequest recaptcha fortigate
1个回答
0
投票

事实上，如果您找到绕过 Google 验证码的方法，您应该通知 Google 并获得赏金。

也就是说，只有当谷歌怀疑你时，隐藏的验证码才会显示。

我设法获取新的验证码并将表单发送到浏览器之外，执行以下操作：

  1. 捕获cookie

寻找

_GRECAPTCHA
。然后提取你需要的值： 例如：
09APYnBZUPrCBVN9yqF_oKPvleUsvQ8L-6sU6NxsXA-9x3ZhBcgFDI4cUYB8-ob86cEhbmf7B_g7LCJrZeZtB58JU
您需要
6sU6NxsXA-9x3ZhBcgFDI4cUYB8-ob86cEhbmf7B

现在，向 google 请求新的验证码，您必须执行 POST 请求并使用从 cookie 捕获的值更改 k 值：

例如：/recaptcha/api2/reload?k=6sU6NxsXA-9x3ZhBcgFDI4cUYB8-ob86cEhbmf7B

您还必须传递“id”或任何谷歌计算的内容，您可以从浏览器中捕获“合法”帖子。

例如：

POST /recaptcha/api2/reload?k=6sU6NxsXA-9x3ZhBcgFDI4cUYB8-ob86cEhbmf7B HTTP/2
Host: recaptcha.net
Content-Length: 6795
Sec-Ch-Ua: "Not_A Brand";v="8", "Chromium";v="120"
Sec-Ch-Ua-Platform: "macOS"
Sec-Ch-Ua-Mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36
Content-Type: application/x-protobuffer
Accept: */*
Origin: https://recaptcha.net
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://recaptcha.net/recaptcha/api2/anchor?ar=1&k=6LfH36YkAAAAABsnkZCRrNd99f-6syCEZ5k8Uilk&co=aHR0cHM6Ly93d3cuZm9ydGlndWFyZC5jb206NDQz&hl=en&v=u-xcq3POCWFlCr3x8_IPxgPu&size=invisible&sa=submit&cb=64v45kmduu40
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Priority: u=1, i


u-xcq3POCWFlCr3x8_IPxgPu¤03AFcWeA7cXnwxptxdq8UYO16GTJf1GnXHjdjewm1AV8wY8d65fSW2kZ18mEUqmHISeH0dX_S2oQUkpZHvJUVd-Io2sVq4UGKVXJAMtWHXF4bNQbXpn69NgYRQ45h7TUrtOFkfrfjzPujaTCcuX7mvX7jVYKbWSJFgnZgQK0d_TK6CJq2OmCuC_T_ibiJIUSnUHN6FA5CO0ODuuJTwy2T4p7zPsfTPliSQ150C6zRpe4gotyUibnzyagTxLA3muhbwzhicfZju5gThJeigorBR950IF14ACOIeVRoiwBRH-tLG3sQy8abibxILnE8ej9Kga26mXgqNhUAzVr9L2QCYGTa1G9qmpgYBnEmwr68T4wMgJDKCzLUsn0Rx5hkSkf5lr6yz-dNuiPbgZFDbNkB_OloYfUvheHsSTiT3NyST-UEe6VPvd_gnp16oVDqA6Laorj5fZ9gx3dZA9dexMLbzjUNuUuy2qqLCPwVF1DLN_s0Sl1h5gFLyBtDQ4Q925SX37Fqj51bC39273n9_UCzib4B2hCgGOLE-V24DqBZByVboCEJQSk0HqvAmO9on_kri0BUf14w8oPks2r2uj5iwEVuv303vKJ-Jlh2glOgIbSPTx0583gSQvqormHQOdg3rlRfnT71VptbFv5vYS8HcoJenY0Jxnl2ivYXThpQPJDnnyNHNg23LLBaqkKBvmLZIgTvvIFdkYky0my3p52cTG6ArtA9bOT3fmJa6_Y49X-fnTturqd7OJcHJiUs23G6lg_IaW_0LNnLM8WaMZ0HU8MyHULnVHOjs7zg4iwzLnkt2tz4SKWUTU_q3-hbQzySv1V0pGxOOlqBO6kNweab1cJlVx-dEilse7aayr23G2J7hnPKsNr07qjLnbHf5PoJKx7vmlO09X-5kxKm4fPW8Gw79KPJND92_e8QgSt4XCbCDe1AhqlUy4tQk61ma-S05jsndeWNZXFd8_dhmEHayBfw23zQVOwGP6PMbQCPpmeq8DX3gCL1CWuf5gQCK2-E060k7xf_WPVcwnO44q3Ip02fU241iq80ReMULTNxAIWeyKJq0Ua0qIaEjb1wVw5nVxstBwec8vP4YlT8tfSBfBFoU8apVbABX-3v-OMfn7wy-tMJ0aJQurtW_0OVLyypWUKTYl3mVlWKiThfPBo5dJR6sw9Ajx1tkH9AYvMJkAebM5wV-zhnr-pgy-sPm8t12PuO5WlOp7ZKQmjRdeTlcWpbnO1iNC33ufckeG7IYXTlhcn2PQaPkSCX0sspBj31AG-GKq2ux8G5nMYD6xMyBZmcoRO2w0tX9Fcw-AWsxO-L6eri2dY_jmfCHsS--yZDJgJZ5mFS_HXPNF-r2bMM38adPprW4De4jBbnqLwHcjGwe3gexv470-SqX9LWmM_cfWI1LNlBmytLm2ZqCXpykku3Xqip4QwOJeiFtG1OiNHMeFv1QiqvxPzNziGNM2PkkzjGLikWJ0a6acaJ9XDfdqNiCJ3p0PZ3N9ur3MxT-ZEd-ziNO911E5FJEsmOCo-o8nx-K4zQuww6IXHky-XBtir0oxT5K6glXYIDj0ZsNsCrC40jOrJ41gulhcxXAoSHYSkiX7RNN_OCPGSr0mtUSNAZH5UXcUdllgxAnElVbjun1bmx7-OmEOnxZpDzu6G4kEU39Soj_rd0psKT_La45xIjqkOrDZ4RoBglAhARu1UmYkxe1n_GjXDxaVibGDtTRO9DfamhBM88q1pvIGJZihANjDBc9gknZscjbgYgXkBMhHyckzW-7HEECxUaQUVPh7Zn5fUtgnXKjLNEWwjWXWBuwS2RRSxtBvQ"!Z2GgYWQKAAQeHsFMbQEHDwGyaShwJfbWMaMeH63-irHb3E1_JGD8eqc6dSLQVmtfRLRqZKQpwmXSArQNU7LuJHlWx2GQTPKpqBExtsYwv50lN5XvO4ODlM6KHLxdNdW7cENcEtPcF6tWqlWXW_n1np_dVlUmoKtib6RBVss0LgmINTGEyDilHf1lUssIzJ5EgB9DQljewkhHgyDF32HGWW5bXpstWWFSHrqWeDjGKxgU3RVj0jospVbwzIBP2msmGXhmY1vFJjnpcEhQCZFplXUYwZFvpG2xBl6H69GlifDlQ5-gaBM9HZo635EFIvnf-88_qYbu6hvVT-BK5I7VuuMKtIkwKDPpoRAXr5D71FYOUtYRYwu3VOt1GyQgMBOUZN1sIT7EEHAvRDMcxJOtS2T-yqISd925AiwnGs4ngR8Ntxv31cvuyRvwx9daCtzcHfjRM9j4lKY1zQyg6eHx8sB6snbWxcRw8AYZnmUkynY34K1PUjN0EFRih2ETUiKmI-zBQPyw6SV8DsS7-P3X5kNd8gYPFrCaLwi6wsdS2QWzZikKe2Ec59IR7AzSCoxpFRP1m8cnRRi3fkrGd1-f9UZvngycAOiDx7fZBPMf-9usT6ClxImRyFlHDc7xyb5s-HXGxHSCjfLDxwQnBrhcvprKabIaibZLd5buezL6hJWfnig1Xe67tILda6UhSSYitomG8LXDomrLwfEMENfkHuP-sZJUT1zJ3w6rIAJnmNRiHI75Vf0_P61SNzds4cHhcjhjXmmvHzZMzNdI0XdSjyjaN9VNSJTzu_22CRKrnPAqzQIo-clZ7DhhDVrHAeb_eustdZ7f4NlEPHa-pm4diAn7i3A5NnCF_fX7I72V1Tmt_UKF93BmR_UUlQRrFsWf5zSvKdNOOjn1gX9wf1WS*
19202241412qBsubmitr(6LfH36YkAAAAABsnkZCRrNd99f-6syCEZ5k8UilkÕ0yfUkR1p2UrDT5gLePF9yjmrI6_4a9gg3gZuNlLrb8lBzhqJ-3P8SLgpoi566lvQXKkYigKO20q4ML0JeOpi7zurGJEdadlKw0-YC3jxfco5qtZjJIQ42SVKpyublHikuRFCOtsPX3DkXSnxqf9q87yhJWl1djZfR6TIYFGtWeI6g_ehKIW56jNbH6hY-TE5zcqnHz-vsEnCTpsKe_B8yTiqIq77athQ3SmZCoMPW8s4sT2J-Wrjb7grmRGd6lnK9oPwVOURWiayP6u8XBTRQepC-7v4NPitSiqevpeAkIFdpXnm7pekbCBJNb4OBvrbtDEpZX3182tMWKjdAaHKq2LK84gUjQ1Zuk7DLD_pFKIShjPAH_B4eJEpti6fB1vsXMHdirZDs_i8qRU55sp7J2RhHT4lQdpm60fICJ0Rio47ZvBgrVSxSc5Styd4DHD9_arWY9AExSkSCfJfC8P8MK198b7GQttn6DixCZoSc484Z_FhplZOIrs_wBiU6XnyT28YR9FBXU6mApsfpBh4yVnSL074J7EhVhrLE2MUVOxdUYI-J0MP65AotSmOGlrrW9jcibVCs3PsX6zBefJ-91MvNC0ZZUW-zrL3vKz0hbWNghqnG4QISNlBws57pzChGMJONla-s0vMTM05egpy-_-o1GHR_or-kyu0MIj5WepO39-ItEGyZk4Cmx-gBIDJVd4vTvgnsSENvXIKlxt7-DjBRaa-a5cgkN0yJZ3CWudruDCJEZIDDrvncODuDb3nJwAwYNxuDd5jH7foYOy8oTm-Qrcnm-ho2VHCCqMfhIw5ZPJi2w-4dEEpqaIHHt_zkNyNFdHGU38QVLU9UQpmYxOfSLSFVS5lyoMP3FTpaNneH0sHWEgwpU3Oi0N4FDkBFL3CrorXV8QYvT4KWvs3w9SxCbzRafZ6y0OYIKUeHctDzBiL-SSyIhZ_w3vcSTmhrd6ba9PUPXyRKa46qw9b7GzV3Yq2Q7P85ACZJaYOhstT0EFM-iWzI0OUtTEqAgMCyyecsM0dubqShyvf3AGA9caqK3eklJBNWUGqJ38DbP0wwhmei1wIOJVAqXJOYm_Hv8EpiU4GYl-TiE0JYQY6yw_W84gghQlZ7k7DJ4_ojPlqbhtG0ED03JEptiavB1vgYMXdiwOP2Eu45HHiJntf06yX8IkNmgJm10-oHKkNWe5az9-ItEGxoqp-t2eIFNktSk8Pm0_NCPUNpgp_b0AQ2WlhPg5nfwQw5SW1jYrK84A3yJmOHnYGo_OHxGCNxWpfMx-keS2Vzd4afs98jP1ZfY7KrxPwRQS9ra4Obtt8aM1YycYSa4eQLGBJvg5q6xM31NU5PWZHBq-nzNCk2cXqgp64DGBU4got2sNPiHBMtOlWspsLb5yw4RIlcgqO-2_kUL0xnhJ622voXV0KNcMzPHBgzYmeHbJK30_MGKEVeepmqyhP-SSyIj6SquN7_Ij5bao-uxQv2QSSAbs2Uut32GzNGa4ek59IwU2aCXqmM6Ov3S2J1fMG1zu_qSkpUWnbWwvDrGx5dkJq0wP0mHmFqa2_TrAMU-jRHY6ypzAjvPUlqkqGqz9_XN0oqf6nG4u7kCDBBZHKbsPL1MghnfXSgtfLfMCVfVImhwM7m-0E7NmuoocPeBxZJSodrxNfn-xQ6UWOFlrvdFhokZ0x6tdTKCTRRcGGRn8_a8ww5V2GjsLWxBRsqL1-ai8fJBwEbPHFug7Gm6RsMXDVlfprL0_wpTEmLn5-80wsbUkRhfrOf4OURKkaKb7bI0ODyP1xWjbmu1eweR12BmYehx8YAFlBWep_G4d_1EEg6cG-5vOH3OjZXU2vB5AIJDiJBY6qe4tEaCy9DVpaBtfcL_ik1ZZ6Rzc8EAxc0OoeFstD6_wBOZ3yJpKng8UMWMpK0z-DR-hY6VV-Amtzt9w9XR0aJrd67-gotX2B2sLm7FQ1KXUGWeZPoFCVGOEuepti8yfUxQj9PotLBC-D_SlBjjcDK1Bj-LFeGmKnc8OsPQGxNe7ux2PsJSC1WopGp3NYJQl1ib720x-YZFzJSX5q4wP0mDxprmbad4Pz3Qkp3kbOt2f3zPjBAXm-evgIJFCtQSYmt4tflCy1fcXa4yc_sA09JeH6WvLIUGUFbTomxju3HITdhV25_xdvlIhQraYt_0L_fFP5MTo2HdJq92fgUJklkq5bhxCAnS2N8rbfa8h4XFDpdfpKwxugIIWdSnYDc2xcCN11SoJO32gA3KWpPs5qzCN4pT1NbY6Lk9PjzFl1wh3-y3tL_JSpqgH3A1dQkAyVxa4q19d4XJl5MZ62ovPcERmNSj5TT0AviHFV5b7G6otP3CCNmiYrA0tDrFg48b6m2s9j270Q3V4OYiK7P8AgqOlx6k9vGEfRQem2nwrP1JDZSNlOLp7q_4EJgMk6At7_i-BpRRjxig6PA1_sTM0pnh5a71fU3Im1QrNjTztwCI0RdfY6wzecvGmVIpKHKDOQxIDeOs8Or-vcSKGlwhpvc5-37UnJMjIK4zv_kCitNaoKWuNPxNyJtUKy52A0vGjdYjnu3wwT_KUdzeKjSy-oHECxvbXPM2f0aLS9UbI6w5wIOEiVETIOktP_I7hEvTWl6m7_YGwZRNJCszbPqCghAXn6QqMgRICBnPGyIydPrJxFOXU-Ys8_c4i9NcpafwcLADg1DZEqJqsMB-xtFU4GMyLLe-DFCTGxymKzc5xxKS1mSh4SqzegCJzZXe5PXwg3wTF2Ysr6jCdD2FzlWboKjxOEjDjJKbYietgHkQEOIqsCd3BYmOT16d8Oa2wjcAiNDYXeOr9DsLxplSIWrztwiJ2RIU6DEu8MPEiczf6evr7DW9xUxU26Gor_c8wovSWmrluHEIBJjiaWP3vLLCk9qd3eJyLDcIgRSWI-akcfbA0ZWSmudobrgDTZPd3SGvZS62_sbNkZnhaTn0h0AXF6YurTH-DULO4t4q7XGBfMgU0OYp7n2AQMkPz5dp8nb4gY6XihOb5GqyNr7FzR7ZrGU0Qz4VXhpfrmf1_4mWFuAe8fD_d_7_CJDZH2ZrtfuMx5pTImv1uQiM0JYn5vIzA8LPC87haWXs7Ta-xw1U2aGz7oF6CVMcZ6FyPfe8kBBfqqnwtDY4AYnSmKBkrL75jFNaUyU0fL59_IwfIewwpzC1AYMY06ZfLn6IDlTa5OneJ6w2_gSIHeTfp62yC8_XWWFcMey_RsGZIeatpLdwP0jSXZck8_qCRgqQD-Imriw4xkLJyhOdJCoxuf8GjtUZoulxQcj¢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

现在，从响应“rresp”中读取验证码值。

例如：

HTTP/2 200 OK
Content-Type: application/json; charset=utf-8
Date: Sat, 23 Dec 2023 02:51:08 GMT
Expires: Sat, 23 Dec 2023 02:51:08 GMT
Cache-Control: private, max-age=0
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
Content-Security-Policy: frame-ancestors 'self'
X-Xss-Protection: 1; mode=block
Server: GSE
Set-Cookie: _GRECAPTCHA=09APYnBZVQFZsSS2_zwW1I5xfkvEmxkiqx4q7dC98nIlrPTiZlrUqx_XC-2_fwUHDkLXAzjxsQPp_0pSft1Df2jIg;Path=/recaptcha;Expires=Thu, 20-Jun-2024 02:51:08 GMT;Secure;HttpOnly;Priority=HIGH;SameSite=none
Alt-Svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

)]}'
["rresp","03AFcWeA4NFUIkl_yZeYTDeIDf0EyMn3dFXfnqSaFHeReYOPVdr6LNw201CoO3ED2UYH1dStpWFpKSSawfzsqRKh8OedN-PbMyaHDbxXW510u1Lsvom7DoqqMKGmPFGqVlcURbTKCUJaVji2zkzFoQ5_neTjysv0aUONQIVYPP3DoDjgMSiGsP77HeBAxhEDRCy8EJR5Uu_E_mH1mUxJQtgm3gPUL3X9_pxvbXtcYkcLe9PBzHZY7ur9Ypf9Ac-sMZVXRZcoIgTRiVdkgb4X75ZJMPCHkRqbeptOQz9PyiBpdR_C8vsmJUKoBxZERHFQRniLK_OWOv-VguLd5fQQQPn_cyy1LDCNxuGx3XX-0QiSf7lY28lGyNr5-S3GiNjpSKhbAbLtq1OrJrUZ7QAEdcg6noti75HT0UFJu_Di851FXSM-18cZcx00aUACuMhw3EP5OwFMIdpDF343-33omz10fc6CcmkPxwB8oBI-zEMI5MmAVBANw3OGm-ZYVX2Y_EdiCalHLHykbBT6OHGvSLSg_Y_ii_XcL0aWBMpOz5g7anzLYeHUMCTBiMlqvxTLOhUM9RrIrT_ME2",null,...

最后，将验证码值添加到您的帖子请求中：

例如：

------WebKitFormBoundaryf3kciwpWsyKSBnht
Content-Disposition: form-data; name="g-recaptcha-response"

03AFcWeA4NFUIkl_yZeYTDeIDf0EyMn3dFXfnqSaFHeReYOPVdr6LNw201CoO3ED2UYH1dStpWFpKSSawfzsqRKh8OedN-PbMyaHDbxXW510u1Lsvom7DoqqMKGmPFGqVlcURbTKCUJaVji2zkzFoQ5_neTjysv0aUONQIVYPP3DoDjgMSiGsP77HeBAxhEDRCy8EJR5Uu_E_mH1mUxJQtgm3gPUL3X9_pxvbXtcYkcLe9PBzHZY7ur9Ypf9Ac-sMZVXRZcoIgTRiVdkgb4X75ZJMPCHkRqbeptOQz9PyiBpdR_C8vsmJUKoBxZERHFQRniLK_OWOv-VguLd5fQQQPn_cyy1LDCNxuGx3XX-0QiSf7lY28lGyNr5-S3GiNjpSKhbAbLtq1OrJrUZ7QAEdcg6noti75HT0UFJu_Di851FXSM-18cZcx00aUACuMhw3EP5OwFMIdpDF343-33omz10fc6CcmkPxwB8oBI-zEMI5MmAVBANw3OGm-ZYVX2Y_EdiCalHLHykbBT6OHGvSLSg_Y_ii_XcL0aWBMpOz5g7anzLYeHUMCTBiMlqvxTLOhUM9RrIrT_ME2
------WebKitFormBoundaryf3kciwpWsyKSBnht--

快乐的日子，一直这样做到1。 Google 判定您不再合法 或 2。网站所有者决定更改验证码类型。.

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