feat: modder

README.md

@@ -1,9 +1,20 @@
 # Quansheng UV-K5 firmware encoder/decoder
 
+WARNING: I am not responsible for the consequences of using. Think before use twice or more. =)
+
 Supports updater [v1.1.7](https://drive.google.com/file/d/1l7NiaImDJCEhKz6BdxD4UxNbs_u4J-cr/view?usp=share_link) (decrypted only) and [1.1.11+](https://drive.google.com/file/d/1hvjFoKGwMibhNqMi6X-rjFYcb6iIzUxe/view?usp=share_link) (encrypted only).
 
 ## Usage
 
+### Example modding
+
+```
+./modder.py fw/k5_26_encrypted.bin > fw/k5_26_encrypted_mod18to1300.bin
+```
+
+### Encdec usage
+
+
 ```
 ./encdec.py <e|d> input.bin > output.bin
 ```

addresses/2.01.26.ini

@@ -14,3 +14,7 @@ B6_1=0xE088
 B6_2=0xE0A4
 B7_1=0xE08C
 B7_2=0xE0A8
+
+[limits]
+L1=0x150C
+L2=0x1510

modder.py

@@ -1,12 +1,14 @@
 #!/usr/bin/env python3
 
+import os
 from pathlib import Path
 from sys import argv
 from configparser import ConfigParser
 
-from lib.encdec import decrypt, eprint
+from lib.encdec import decrypt, encrypt, eprint
 
 ADDR_DIR = Path(__file__).parent / 'addresses'
+MODS_DIR = Path(__file__).parent / 'mods'
 
 def main(encrypted_file_path):
     file_bytes = Path(encrypted_file_path).read_bytes()
@@ -14,14 +16,31 @@ def main(encrypted_file_path):
     eprint('version:', version)
 
     addr_file = ADDR_DIR / ('%s.ini' % version)
-    addresses = ConfigParser()
-    addresses.read(addr_file)
+    mods_file = MODS_DIR / ('%s.ini' % version)
+
+    addresses = ConfigParser()
+    mods = ConfigParser()
+    addresses.read(addr_file)
+    mods.read(mods_file)
+
+
+    for section_name in addresses:
+        eprint('[%s]' % section_name)
+        section_values = addresses[section_name]
+        for k in section_values:
+            addr = int(section_values.get(k), 16)
+            value = int.from_bytes(decrypted[addr:addr+4], 'little')
+            eprint(k, addr, value)
+
+            if mods[section_name] and mods[section_name].get(k):
+                new_value = mods[section_name].get(k)
+                eprint('new:', new_value)
+                decrypted = decrypted[:addr] + int(new_value).to_bytes(4, 'little') + decrypted[addr+4:]
+
+
+    encrypted = encrypt(decrypted, version)
+    os.write(1, encrypted)
 
-    bands_addr = addresses['bands']
-    for k in bands_addr:
-        addr = int(bands_addr.get(k), 16)
-        value = int.from_bytes(decrypted[addr:addr+4], 'little')
-        eprint(k, addr, value)
 
 
 if __name__ == "__main__":

mods/2.01.26.ini

@@ -0,0 +1,7 @@
+[bands]
+B1_1=1800000
+B7_2=130000000
+
+[limits]
+L1=1800000
+L2=130000000