Follow us on Twitter!
The measure of a mans life is not how well he dies, but how well he lives.
Wednesday, April 23, 2014
Navigation
Home
HellBoundHackers Main:
HellBoundHackers Find:
HellBoundHackers Information:
Learn
Communicate
Submit
Shop
Challenges
HellBoundHackers Exploit:
HellBoundHackers Programming:
HellBoundHackers Think:
HellBoundHackers Track:
HellBoundHackers Patch:
HellBoundHackers Other:
HellBoundHackers Need Help?
Other
Members Online
Total Online: 21
Guests Online: 20
Members Online: 1

Registered Members: 82885
Newest Member: ConiBE
Latest Articles
View Thread

HellBound Hackers | Challenges | Patching

Author

app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 21:07
hey. like it was said it wasn't hard. patched it the way it asked to.
but my checksum is invalid.
(i used express checksum calculator to calculate the md5 hash)


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 21:09
Is the hash capitalized?

It should be low-case


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 21:20
sakarin: if you want, pm me your patched lines
Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 21:43
ok dudes it wasn't my problem it's a bug..

the answer has to be lowercase
..


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 22:03
is there a way to use Olly to save the patched app?

I know how to get around the jump, which lines to NOP out, etc, but have no way of saving my finished product to create a sum.


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 22:28
you do realize that's the point of the challenge?
app cracking teaches you how to use olly and other apps.
patching will make you research that.

i can tell you that w32dasm gives you a relative adress that you can use to search on a hex editor. and that yes olly is capable of saving changes

i can also tell you that the instructions for both of this tasks will appear on the first page of google results after you search.

cmon. we do this to learn not to get points =)


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 22:30
sakarin wrote:
you do realize that's the point of the challenge?
app cracking teaches you how to use olly and other apps.
patching will make you research that.

i can tell you that w32dasm gives you a relative adress that you can use to search on a hex editor. and that yes olly is capable of saving changes

i can also tell you that the instructions for both of this tasks will appear on the first page of google results after you search.

cmon. we do this to learn not to get points =)


i know i know. =P

I'll get reading.

EDIT: Yeah, heh, I just got it literally five minutes after I posted. Sorry for the trouble.




Edited by on 07-07-07 22:37
Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 07-07-07 22:39
trouble is better than to make this topic a compendium of instructions and articles you need to read for beating the challenge,,,

=)


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 10-07-07 01:32
lesserlightsofheaven wrote:
is there a way to use Olly to save the patched app?


Right click on cpu window and select "Copy to executable > All modifications"
If you press on "All modifications" a new little window will be shown. Press on "Copy All" on this window. A new window with the new ASM code will be shown. Close the new window (THE CHILD WINDOW! NOT OLLY DBG WINDOW!). Then a save dialog let you choose a new filename.
Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 10-07-07 02:08
now really what's your point?..

the question was answered. you just took away from anyone who wanted to know that another chance to learn the very important skill of searching..


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 12-07-07 13:22
Can i PM someone the line i patched?

tried to lowercase the MD5 checksum, think i patched it wrong..


Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 12-07-07 13:40
PM me if you want to Smile
Author

RE: app patching1

mido
Member

Your avatar

Posts: 613
Location: Cairo, Egypt
Joined: 27.01.07
Rank:
Monster
Posted on 12-07-07 14:13
hmmm....guys, is there any way to solve this on x64?...IDA?...Virtual Machine?


www.hellboundhackers.org/sig/r/16019.png

mido_eg3[at]hotmail.com
Author

RE: app patching1


Member

Your avatar

Posts:
Location:
Joined: 01.01.70
Rank:
Guest
Posted on 12-07-07 16:34
if you can do the required operation yeah.
just by looking at the code you know what to do.