Made README file

README.md

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+# Pytroj
+
+__Pytroj is a proof of concept attack against .pyc files.__ It searches for other .pyc files and injects itself into them. The injected code can be any python code (in this case it prints "You have been exploited").
+
+This proof of concept only searches for .pyc files in its own directory. To use it:
+
+     python -c 'import exploit, b, c'
+     python exploit.pyc
+
+The files b.pyc and c.pyc will now be infected. If you create another .pyc file (for example, python -c 'import byteplay') and run either b.pyc or c.pyc, the new file will also get infected.
+
+Another way to run an infected file is to import it once the .pyc file exists:
+
+     python -c 'import b'
+
+For help, questions, or comments, feel free to contact us:
+
+["Joey Geralnik"](https://github.com/jgeralnik "jgeralnik")
+["Leon Fedotov"](https://github.com/LeonFedotov "im0b")
+["Itzik Kotler"](https://github.com/ikotler "itzikkotler")