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A reverse shell for Windows and Linux written in C.

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c-reverse-shell

Info

A reverse shell for Windows and Linux written in C.

Features:

  • Linux and Windows version.
  • Runs in the background (on both, Linux and Windows, no blocking terminal or black screen).
  • You can choose between waiting for the client (if it's no listening) or not.
  • Compile with just one command (see at the bottom of the README.md), there is also a Makefile.

Dependencies

For Windows you will need mingw-w64 compiler (the .exe binary is compiled in linux):

sudo apt install gcc-mingw-w64

How to use

  1. Clone repo:
git clone https://github.com/izenynn/c-reverse-shell.git
  1. Change client IP and client PORT with change_client.sh (you can change it manually inside linux.c and windows.c if you prefer):
./change_client.sh [CLIENT_IP] [CLIENT_PORT]
  1. Compile for Linux and Windows with make (equivalent to make all):
make
  1. And ✨ magic ✨ compile the program in your target, or just send the binary, and execute it, make sure your client is listening 😊.

Additionally you can compile with WAIT_FOR_CLIENT true, this will make the program loop until the connection to the client is established, instead of returning an error in the connection:

make WAIT_FOR_CLIENT=TRUE

NOTE: this doen't work on windows, not sure why, but I'm sleepy, so maybe I fix it another day (or pull request if you fix it please 😊).

Other Makefile rules:

  • make all
  • make linux
  • make windows
  • make re
  • make all WAIT_FOR_CLIENT=TRUE
  • make linux WAIT_FOR_CLIENT=TRUE
  • make windows WAIT_FOR_CLIENT=TRUE
  • make re WAIT_FOR_CLIENT=TRUE
  • make clean

In case you don't have the Makefile, just copy the reverse-shell.c file and compile it with the following command:

  • Linux
gcc -std=c99 linux.c -o rsh.out
gcc -std=c99 linux.c -o rsh.out -D WAIT_FOR_CLIENT
  • Windows:
i686-w64-mingw32-gcc-win32 -std=c99 windows.c -o rsh.exe -lws2_32
i686-w64-mingw32-gcc-win32 -std=c99 windows.c -o rsh.exe -lws2_32 -D WAIT_FOR_CLIENT

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A reverse shell for Windows and Linux written in C.

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  • C 63.8%
  • Makefile 26.5%
  • Shell 9.7%