How to upload to habrastorage because of a proxy with authentication?

Question

habrastorage.org

Given: I'm in a corporate network + a corporate proxy with authentication + click "upload" + select a file = ajax upload ( probably on flash ) gives an error 407 "proxy authentication required":

In general, the question. What to do? How to get around? Will it be fixed by the administration of the resource?
UPD: OS Win7 x64, Chrome latest (not dev)
PS: Yes, you can upload to other hostings, but it is fraught with blocking pictures due to the habraeffect, so you don’t really want to.
PPS: the question was “leaked”, although as I see it, I’m not the only one, there is no answer, the hack with hacking the corporate network and spending several hours on it is not interesting - they can simply hit on the ears, security and all that. We don't play spillikins here. I thought I would hear a civilized answer - perhaps there are hidden settings for the flash somewhere or disabling it on the habrastorage. I will probably disable the flash for the habrastorage in the browser - we'll see what happens.

Answer 1

It is possible to dig a tunnel if such connections are not cut and there is remote access to some external machine. If you have Windows, then putty can build tunnels (and dig through proxies too). If gnu/linux, then ssh -CND localhost:3128 [email protected] will do (this one can also walk through a proxy).
PS True, some proxies cut all ports other than 80 and 443, and a couple of times I saw a proxy where ssh on port 443 does not save either.

Answer 2

Did (on WinXP) something like this:
proxytunnel.exe -a 80 -p proxy-addr : proxy-port -d habrastorage.org:80 -v -H "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Win32 )\n» -P " proxy-user : proxy-password "
in hosts you need to add " IP-address-where-proxytunnel-habrastorage.org-is-launched " It worked
.

Answer 3

Mac OS, the same problem as the author

Answer 4

If you are interested in a non-one-time solution, you can put a local authorizing proxy - cntlm\ntlmaps. I just wrote an article about this case . At work, I also prox with authorization - the screenshots were uploaded to habrastorage without any problems).