Can't understand "Trip to the past"

fwjmath
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Can't understand "Trip to the past"

Post by fwjmath »

Simply can't figure out what this challenge wants.
I've tried to fake a date in my http request, though I know that a request needs no date.
Also tried to fake the user-agent, no help neither.

Can anyone give me a really really small hint? Thanks.

fwjmath.
gfoot
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Joined: Wed Sep 05, 2007 11:34 pm
Location: Brighton, UK

Post by gfoot »

I haven't solved it, but I guess the fact that it quotes your user agent is a clue. Using tools that don't send a user agent, it just refers to you as "anonymous" or something like that.

I guess it's waiting for a specific user agent, but there's not much clue as to which one.
Grammaton
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Joined: Tue Nov 04, 2008 11:32 am
Location: Bavaria, Germany

Post by Grammaton »

After some tries, i stopped this level.
I did some workarounds with some injections in user-agent => no luck
tried some extra headers like, date, cache-control and so => no luck

I figured out that user-agent is only cheking for some strings.
i assume something like this pseudo code:
if insideuseragent("MSIE") return "IE"
if insideuseragent("Opera") return "Opera"
if insideuseragent("Konqueror") return "Konqueror"
if insideuseragent("Chrome") return "Chrome"
if insideuseragent("Safari") return "Safari"
if insideuseragent("Gecko") return "Firefox"
... maybe there are more string compares, feel free to complete my list :-)
return "anonymous"

cheers,
Grammaton
snibril
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Post by snibril »

You are to young :lol:
fwjmath
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Post by fwjmath »

snibril wrote:You are to young :lol:
Though, I just got it down, with a lot of searches.
Which is more confusing is that, at first I used an older version of the specific user-agent string, but it didn't accept it. Next I tried a newer (of course relatively speaking) one, and buff! It worked!

But you're right, snibril, I'm too young to solve this easily. :)
Grammaton
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Location: Bavaria, Germany

Post by Grammaton »

Thank you for the hint snibril!
I got it, too :-)
gfoot
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Joined: Wed Sep 05, 2007 11:34 pm
Location: Brighton, UK

Post by gfoot »

I tried setting it to the first web browser ever, and it didn't work. I guess that's just too old then.
sigi
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Joined: Sun Oct 26, 2008 4:58 pm

Post by sigi »

gfoot wrote:I tried setting it to the first web browser ever, and it didn't work. I guess that's just too old then.
There is one particular web browser which springs to mind easily to anybody who has witnessed the birth of the WWW, but of course it's not used anymore for a long time by now.

If you've never heard of it before it's of course impossible to guess out of the blue but certainly possible to research. Some Wikipedia articles about the history of the WWW will guide you into the right direction.

I actually downloaded the source code for that browser to make sure I got the correct user agent string (after some failures). I'm not sure if that is really necessary, it depends on how fascist the checking routine is about the string.

You might even find a working version of the browser in question (depending on your operating system, this might not be easy, however!).
the_impaler
Posts: 61
Joined: Wed Apr 30, 2008 3:31 am

Post by the_impaler »

[quote="sigi"][quote="gfoot"]I tried setting it to the first web browser ever, and it didn't work. I guess that's just too old then.[/quote]
There is one particular web browser which springs to mind easily to anybody who has witnessed the birth of the WWW, but of course it's not used anymore for a long time by now.

If you've never heard of it before it's of course impossible to guess out of the blue but certainly possible to research. Some Wikipedia articles about the history of the WWW will guide you into the right direction.

I actually downloaded the source code for that browser to make sure I got the correct user agent string (after some failures). I'm not sure if that is really necessary, it depends on how fascist the checking routine is about the string.

You might even find a working version of the browser in question (depending on your operating system, this might [i]not[/i] be easy, however!).[/quote]

Looking into source code is always encouraged by this group of hackers.
gfoot
Posts: 269
Joined: Wed Sep 05, 2007 11:34 pm
Location: Brighton, UK

Post by gfoot »

sigi wrote:There is one particular web browser which springs to mind easily to anybody who has witnessed the birth of the WWW, but of course it's not used anymore for a long time by now.
Granted, but it wasn't the first web browser ever. Maybe it was the first to pass a user agent header?
lukas
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Joined: Wed Nov 26, 2008 1:53 pm
Location: Germany

Post by lukas »

I need a little help,

I also tried to simulate an another browser client and another post date

then I found this Thread and read the paragraph "not the oldest Broser... a newer one works"
and "a search in wikipedia will help"

So I tried some browser versions:

Netscape:

Code: Select all

	1.1
	1.22
	2.0
	2.02
	3.04
	4.03
	4.04
	4.07
	4.08navonly
	4.5comm
	4.61comm
	4.72comm
	4.74communicator
	4.75communicator
	4.77communicator
	4.8
	6.0
	7.1
and Mosaic:

Code: Select all

	2.1
	3.0


But nothing work :(

really need help
BlackInTheBox
Posts: 2
Joined: Thu Jun 11, 2009 1:05 am

Post by BlackInTheBox »

ahh, got it now, thanks.. at first i was clued in on the way back machine but now i see just how wrong i was.
Washik
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Joined: Sat Jun 27, 2009 5:56 am

Post by Washik »

Because You are not a Hacher........
Thanks Advance For Understanding. :lol: :lol: :lol:
Millennium
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Joined: Thu Apr 21, 2011 3:08 am

Post by Millennium »

I was sure that it was Netscape but even that's not working -_-
BadCop
Posts: 4
Joined: Sun May 29, 2011 7:45 am

wrong? broken?

Post by BadCop »

Hey there,

i tested many user agent strings from http://www.useragentstring.com/pages/us ... string.php
according to the history of web-browsers http://upload.wikimedia.org/wikipedia/c ... owsers.svg

Nothing works.

Any suggestions? please PM me
Last edited by BadCop on Sun Jun 12, 2011 9:19 am, edited 1 time in total.
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