From 0081d76ba15b08be04cd2a7c7c65a7c0e6e7a6fe Mon Sep 17 00:00:00 2001
From: Cyrille Bagard <nocbos@gmail.com>
Date: Sat, 22 Sep 2018 10:06:19 +0200
Subject: Created a Chrysalide based unpackbootimg Python tool.

---
 python/unpackbootimg.py | 79 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 python/unpackbootimg.py

diff --git a/python/unpackbootimg.py b/python/unpackbootimg.py
new file mode 100644
index 0000000..addc408
--- /dev/null
+++ b/python/unpackbootimg.py
@@ -0,0 +1,79 @@
+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+
+import argparse
+import sys
+import pychrysalide
+from pychrysalide.analysis.contents import FileContent
+from pychrysalide.format.bootimg import BootimgFormat
+
+
+if __name__ == '__main__':
+    """Script entry point."""
+
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('bootimg', help='path to the Android boot imgage to process')
+
+    args = parser.parse_args()
+
+    cnt = FileContent(args.bootimg)
+
+    if cnt is None:
+        sys.exit('No content to load!')
+
+    fmt = BootimgFormat(cnt)
+
+    if fmt is None:
+        sys.exit('Failed to load the boot image!')
+
+    oattribs = [
+        'magic',
+        'kernel_size',
+        'kernel_addr',
+        'ramdisk_size',
+        'ramdisk_addr',
+        'second_size',
+        'second_addr',
+        'tags_addr',
+        'page_size',
+        'header_version',
+        'os_version',
+        'name',
+        'cmdline',
+        'extra_cmdline'
+    ]
+
+    maxlen = 0
+
+    for a in oattribs:
+        if len(a) > maxlen:
+            maxlen = len(a)
+
+    name = ' {0:<%u}' % (maxlen + 1)
+
+    header = fmt.get_header()
+
+    for a in oattribs:
+
+        v = getattr(header, a)
+
+        value = '0x%x' % v if type(v) == int else v
+
+        print(name.format(a + ':'), value)
+
+        with open(args.bootimg + '-' + a, 'w') as out:
+            out.write(value)
+            out.write('\n')
+
+    contents = {
+        'kernel':        fmt.get_kernel(),
+        'ramdisk':       fmt.get_ramdisk(),
+        'second_stage':  fmt.get_second_stage(),
+        'recovery_dtbo': fmt.get_recovery_dtbo()
+    }
+
+    for k, v in contents.items():
+        if v:
+            with open(args.bootimg + '-' + k, 'wb') as out:
+                out.write(v.data)
-- 
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