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move keys to seperate keys file, cleanup samsung_old

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theubusu
2025-10-08 15:14:53 +02:00
parent dbaffb73d0
commit 51c9a668ec
9 changed files with 96 additions and 78 deletions
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src/formats/samsung_old.rs
+25 -32
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@@ -3,12 +3,14 @@ use std::path::{Path, PathBuf};
use std::fs::{File, OpenOptions};
use std::io::{Write};
use aes::Aes128;
use hex::decode;
use cbc::{Decryptor, cipher::{block_padding::Pkcs7, BlockDecryptMut, KeyIvInit}};
use sha1::{Digest, Sha1};
type Aes128CbcDec = Decryptor<Aes128>;
use crate::common;
use crate::keys;
use md5;
@@ -43,36 +45,21 @@ pub fn extract_samsung_old(path: &PathBuf, output_folder: &str) -> Result<(), Bo
println!("Firmware info: {}", fw_info);
let image_path = Path::new(&path).join("image");
let mut secret = "";
let secret_t_ecp = [0x3E, 0xF6, 0x06, 0x72, 0x62, 0xCF, 0x0C, 0x67, 0x85, 0x98, 0xBF, 0xF2, 0x21, 0x69, 0xD1, 0xF1, 0xEA, 0x57, 0xC2, 0x84];
// from samygo tool
if fw_info.starts_with("T-GA"){
secret = "SHWJUH:85a045ae-2296-484c-b457-ede832fcfbe1-646390a3-105e-40aa-85f6-da3086c70111";
} else if fw_info.starts_with("T-MST5"){
secret = "SHWJUH:eceb2c14-db11-425e-9ebf-5f9607f0eb4b-3c38193e-751e-4719-8884-9e76322c0cec";
} else if fw_info.starts_with("B-FIRHT7"){
secret = "d6442d-7b46b2f4-0f11-4623-af63-8bb0a0d54c80-a22fbe2c-1bb5-49cc-b194-25c0f2b870f4";
} else if fw_info.starts_with("B-FIRU") | fw_info.starts_with("B-FIRH") | fw_info.starts_with("B-FIRBSP") | fw_info.starts_with("B-FIR2"){
secret = "SHWJUH:db48ad51-c784-4f06-af57-1070a910c536-6a028bb5-e83e-45da-b326-a3a39ccba26c";
} else if fw_info.starts_with("B-FIRB"){
secret = "d6442d-7b46b2f4-0f11-4623-af63-8bb0a0d54c80-a22fbe2c-1bb5-49cc-b194-25c0f2b870f4";
} else if fw_info.starts_with("T-MST10P"){
secret = "b4c136-fbc93576-b3e8-4035-bf4e-ba4cb4ada1ac-f0d81cc4-8301-4832-bd60-f331295743ba";
} else if fw_info.starts_with("B-ECB"){
secret = "SHWJUH:8fb684a9-84c1-46cf-aa81-977bce241542-6db4c136-8540-4ee4-8704-d9cd18590d11";
} else if fw_info.starts_with("T-VAL"){
secret = "A435HX:d3e90afc-0f09-4054-9bac-350cc8dfc901-7cee72ea-15ae-45ce-b0f5-00001abc2010";
} else if fw_info.starts_with("T-TDT"){
secret = "A435HX:d3e90afc-0f09-4054-9bac-350cc8dfc901-7cee72ea-15ae-45ce-b0f5-00002abc2010";
} else if fw_info.starts_with("T-MSX"){
secret = "A435HX:d3e90afc-0f09-4054-9bac-350cc8dfc901-7cee72ea-15ae-45ce-b0f5-00004abc2010";
} else if fw_info.starts_with("T-CH"){
secret = "A435HX:d3e90afc-0f09-4054-9bac-350cc8dfc901-7cee72ea-15ae-45ce-b0f5-611c4f8d4a71";
} else if fw_info.starts_with("T-ECP") {
let mut secret: Option<&str> = None;
//find secret
for (prefix, value) in keys::SAMSUNG {
if fw_info.starts_with(prefix) {
secret = Some(value);
break;
}
}
if let Some(p) = secret {
println!("Secret: {}", p);
} else {
println!("Sorry, this firmware is not supported!");
return Ok(());
std::process::exit(1);
}
for entry in fs::read_dir(image_path)? {
@@ -86,6 +73,7 @@ pub fn extract_samsung_old(path: &PathBuf, output_folder: &str) -> Result<(), Bo
let filename = path.file_name().unwrap().to_str().unwrap();
let file_size = file.metadata()?.len();
println!("\nFile: {}", filename);
let data = common::read_file(&file, 0, file_size.try_into().unwrap())?;
let salt = &data[8..16];
@@ -95,25 +83,31 @@ pub fn extract_samsung_old(path: &PathBuf, output_folder: &str) -> Result<(), Bo
//Old -> key: md5 of (sha1 of secret as TEXT + salt)
// iv: md5 of (md5 of key + key)
//2012 -> key: md5 of (secret + salt)
//2012 -> key: md5 of (secret(as bytes) + salt)
// iv: md5 of (md5 of key + key)
if fw_info.starts_with("T-ECP") {
let key: Vec<u8> = [&secret_t_ecp, salt].concat();
let mut key = Vec::new();
key.extend_from_slice(&decode(secret.unwrap())?);
key.extend_from_slice(salt);
key_md5 = md5::compute(&key);
let mut iv = Vec::new();
iv.extend_from_slice(&key_md5.0);
iv.extend_from_slice(&key);
iv_md5 = md5::compute(&iv);
} else {
let mut hasher = Sha1::new();
hasher.update(secret);
hasher.update(secret.as_ref().unwrap());
let secret_digest = hasher.finalize();
// yes it needs to be a string first then into bytes
let secret_digest_string = format!("{:x}", secret_digest);
let secret_digest_bytes = secret_digest_string.as_bytes();
let key: Vec<u8> = [&secret_digest_bytes, salt].concat();
let mut key = Vec::new();
key.extend_from_slice(&secret_digest_bytes);
key.extend_from_slice(salt);
key_md5 = md5::compute(&key);
let mut iv = Vec::new();
@@ -124,7 +118,6 @@ pub fn extract_samsung_old(path: &PathBuf, output_folder: &str) -> Result<(), Bo
//println!("Key: {:02x?}", key_md5);
//println!("IV: {:02x?}", iv_md5);
let end = file_size - 260;
println!("- Decrypting file...");
let decrypted_data = decrypt_aes(&data[16..end.try_into().unwrap()], &key_md5, &iv_md5)?;