Random Homebrew: VMU
A Dreamcast emulator

deadbeef?

Post crashes / information about (potential) security issues over here! Sensitive information might be deleted without notice.

deadbeef?

Postby hgoel0974 » Tue Jan 29, 2013 1:59 am

Advertising
I am looking at some exploit and in the debugger, I see lots of deadbeef, is that like null for the registers?
User avatar
hgoel0974
 
Posts: 3310
Joined: Mon Jul 23, 2012 11:42 pm
Location: Inside the Animus!

Re: deadbeef?

Postby DS_Marine » Tue Jan 29, 2013 2:16 am

Advertising
hehe I made the same question few days after registering here.
I found a nice read here
or was it this?

anyway, the hijacked thread was this :p
viewtopic.php?f=6&t=18708&hilit=+deadbeef
/Edit:
FrEdDy wrote:When returning from a syscall, the syscall handler stores 0xDEADBEEF in all argument and temp registers to avoid data leaks.
The price of freedom is eternal vigilance.
ImagePSP-Controlled drone
"...the site is as empty as the brains of people who believe such fakes" - Wololo
User avatar
DS_Marine
 
Posts: 136
Joined: Wed Oct 10, 2012 1:32 pm
Location: Argentina

Re: deadbeef?

Postby hgoel0974 » Tue Jan 29, 2013 2:39 am

Thanks! I am new to all these things.
User avatar
hgoel0974
 
Posts: 3310
Joined: Mon Jul 23, 2012 11:42 pm
Location: Inside the Animus!

Re: deadbeef?

Postby Theredbaron » Tue Jan 29, 2013 2:44 am

Damn, I saw this and thought maybe someone was porting Deadbeef to the psp. :)
http://deadbeef.sourceforge.net/
Vita 3G - 4GB/8GB - 2.02 TN-V
User avatar
Theredbaron
 
Posts: 436
Joined: Wed Feb 15, 2012 8:47 pm

Re: deadbeef?

Postby noname120 » Thu Jan 31, 2013 11:21 am

When there is a return from a syscall, 0xDEADBEEF are placed all over to avoid data leak.
I'm evil :twisted:
Image
noname120
 
Posts: 666
Joined: Thu Oct 07, 2010 4:29 pm

Re: deadbeef?

Postby poettlr » Fri Feb 22, 2013 10:49 am

Some memory managers write deadbeef arround memobjects to know if there is a leak.

at least i do that.. I'd say its actully pretty normal for a c++ dev
poettlr
 
Posts: 37
Joined: Mon May 14, 2012 2:10 pm


Return to Security

Who is online

Users browsing this forum: No registered users and 2 guests

Friends

Coding 'n Cracking - Nymphaea - PS3 Forum - darkforestgroup - daxhordes.org - Tgames - coldbird - gopsp.it - pspstation.org - prometheus - hgoel.info - MakeSmartTV - ps vita