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How do I configure python to proxy through BurpSuite for https?

Oscar | Last updated: Feb 03, 2017 07:17PM UTC

I have BurpSuite configured as a proxy. I have generated and installed a certificate for Burp in my Mac's keychain. On a Kali box I have also configured Iceweasel to proxy through my Burp Proxy running on my Mac. I can can browse from Kali to both http and https sites and burp intercepts the requests. I forward them through and confirm the security exceptions and the browser eventually displays web pages. From the Kali command line I exported the following two variables export http_proxy=http://172.xx.yy.z:8081 export https_proxy=http://172.xx.yy.z:8081 I wrote one python script: (env) ojblass@kali:~/effective_python$ cat ojblass_urllib_http.py import urllib url = urllib.urlopen("http://www.hotmail.com") data = url.read() print data This correctly hits the BurpSuite proxy; however, when I attempt to run https traffic through the request is not intercepted: (env) ojblass@kali:~/effective_python$ cat ojblass_urllib_https.py import urllib url = urllib.urlopen("https://mail.live.com/default.aspx") data = url.read() print data Instead the following error is printed: <html><head><title>Burp Suite Professional</title> <style type="text/css"> body { background: #dedede; font-family: Arial, sans-serif; color: #404042; -webkit-font-smoothing: antialiased; } #container { padding: 0 15px; margin: 10px auto; background-color: #ffffff; } a { word-wrap: break-word; } a:link, a:visited { color: #e06228; text-decoration: none; } a:hover, a:active { color: #404042; text-decoration: underline; } h1 { font-size: 1.6em; line-height: 1.2em; font-weight: normal; color: #404042; } h2 { font-size: 1.3em; line-height: 1.2em; padding: 0; margin: 0.8em 0 0.3em 0; font-weight: normal; color: #404042;} .title, .navbar { color: #ffffff; background: #e06228; padding: 10px 15px; margin: 0 -15px 10px -15px; overflow: hidden; } .title h1 { color: #ffffff; padding: 0; margin: 0; font-size: 1.8em; } div.navbar {position: absolute; top: 18px; right: 25px;}div.navbar ul {list-style-type: none; margin: 0; padding: 0;} div.navbar li {display: inline; margi-left: 20px;} div.navbar a {color: white; padding: 10px} div.navbar a:hover, div.navbar a:active {text-decoration: none; background: #404042;} </style> </head> <body> <div id="container"> <div class="title"><h1>Burp Suite Professional</h1></div> <h1>Error</h1><p>Invalid&#32;client&#32;request&#32;received&#58;&#32;First&#32;line&#32;of&#32;request&#32;did&#32;not&#32;contain&#32;an&#32;absolute&#32;URL&#32;&#45;&#32;try&#32;enabling&#32;invisible&#32;proxy&#32;support&#46;</p> <div class="request">GET&nbsp;https://mail.live.com/default.aspx&nbsp;HTTP/1.0<br> User-Agent:&nbsp;Python-urllib/1.17<br> Accept:&nbsp;*/*<br> <br> </div><p>&nbsp;</p> </div> </body> </html> The main content of the error states 'Invalid client request received. First line of request did not contain an absolute URL. I have googled this error but everything I seem to come does not appear relevant. I am new to this and would appreciate any insight you might have.

Liam, PortSwigger Agent | Last updated: Feb 06, 2017 09:46AM UTC

Hi Oscar Thanks for your message. I noticed that you found a workaround and posted it on stack exchange: - http://security.stackexchange.com/questions/150329/proxying-requests-through-python-and-burpsuite-not-working Are you now able to use Burp in the required manner? Please let us know if you need any further assistance.

Burp User | Last updated: Mar 27, 2019 01:06PM UTC