chapter: Reformat content

Reformat content to make it publishable via Docusaurus.

The `pwntools-intro` section was previously stored outside the
`chapters/` directory. Move it inside the `chapters/` directory.

Update formatting, links and configuration file (`config.yaml`) to new
structure.

Reformat Python code using `black`.

Apply linting (via `markdownlint-cli`) to Markdown files.

Signed-off-by: Razvan Deaconescu <[email protected]>

COPYING.md

@@ -7,7 +7,7 @@ A copy of each license is below.
 
 Copy of CC BY-SA 4.0:
 
-```
+```text
 Attribution-NonCommercial-ShareAlike 4.0 International
 
 =======================================================================
@@ -449,7 +449,7 @@ Creative Commons may be contacted at creativecommons.org.
 
 Copy of BSD-3-Clause:
 
-```
+```text
 Copyright 2021 University POLITEHNICA of Bucharest
 
 Redistribution and use in source and binary forms, with or without

chapters/binary-analysis/dynamic-analysis/activities/04-challenge-call-me/src/calc_offset.py

@@ -3,10 +3,10 @@
 f = open("../flag")
 flag = f.readline().strip()
 f.close()
-char = '\n'
+char = "\n"
 
 res = []
 for i in range(0, len(flag)):
     res += [ord(flag[i]) - ord(char)]
 
-print "{" + ", ".join("{}".format(r) for r in res) + "};"
+print("{" + ", ".join("{}".format(r) for r in res) + "};")

chapters/binary-analysis/dynamic-analysis/activities/06-challenge-phone-home/sol/encrypt.py

@@ -1,29 +1,30 @@
 from pwn import *
 
 flag = "SSS_CTF{0bad3910f14d10569b8bfe11aa1081e970e72e}\x00"
-flag = ''.join(chr((ord(x) - 13) & 0xff) for x in flag)
+flag = "".join(chr((ord(x) - 13) & 0xFF) for x in flag)
 parts = unpack_many(flag, 32)
 
 for i in range(len(parts)):
-	print('strvec[%d] = 0x%x;' % (i, parts[i]))
+    print("strvec[%d] = 0x%x;" % (i, parts[i]))
 
 
 def encrypt(data):
-	res = map(ord, data)
-	n = len(data)
-	print(hexdump(data))
-	for i in range(n / 2):
-		res[i] = res[i] ^ res[n - i - 1]
-		res[n - i - 1] = (res[n - i - 1] - 1) & 0xff
-	return ''.join(map(chr, res))
+    res = map(ord, data)
+    n = len(data)
+    print(hexdump(data))
+    for i in range(n / 2):
+        res[i] = res[i] ^ res[n - i - 1]
+        res[n - i - 1] = (res[n - i - 1] - 1) & 0xFF
+    return "".join(map(chr, res))
+
 
 binary = ELF("./phone_home")
-context.arch = 'i386'
+context.arch = "i386"
 
 func_ea = binary.symbols["gen_flag"]
 chunk = binary.read(func_ea, 4096)
-func_sz = chunk.find(asm('ret')) + 1
-print('Function size: 0x%x' % func_sz)
+func_sz = chunk.find(asm("ret")) + 1
+print("Function size: 0x%x" % func_sz)
 
 func = encrypt(chunk[:func_sz])
 binary.write(func_ea, func)