Merge pull request #2 from lizhineng/decrypt

Find a possible key for authinfo

3 files changed, 220 insertions, 0 deletions

diff --git a/decryptor/Cargo.lock b/decryptor/Cargo.lock
new file mode 100644
index 0000000..ee6196f
--- /dev/null
+++ b/decryptor/Cargo.lock
@@ -0,0 +1,147 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bitflags"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
+
+[[package]]
+name = "cc"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74b6a57f98764a267ff415d50a25e6e166f3831a5071af4995296ea97d210490"
+
+[[package]]
+name = "cfg-if"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "decryptor"
+version = "0.1.0"
+dependencies = [
+ "hex",
+ "openssl",
+]
+
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
+dependencies = [
+ "foreign-types-shared",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+[[package]]
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+
+[[package]]
+name = "openssl"
+version = "0.10.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "foreign-types",
+ "libc",
+ "once_cell",
+ "openssl-macros",
+ "openssl-sys",
+]
+
+[[package]]
+name = "openssl-macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "openssl-sys"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c597637d56fbc83893a35eb0dd04b2b8e7a50c91e64e9493e398b5df4fb45fa2"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
+name = "pkg-config"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "unicode-ident",
+]
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+[[package]]
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+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/decryptor/Cargo.toml b/decryptor/Cargo.toml
new file mode 100644
index 0000000..80d0338
--- /dev/null
+++ b/decryptor/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "decryptor"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+hex = "0.4.3"
+openssl = "0.10.64"
diff --git a/decryptor/src/main.rs b/decryptor/src/main.rs
new file mode 100644
index 0000000..d48e7bb
--- /dev/null
+++ b/decryptor/src/main.rs
@@ -0,0 +1,65 @@
+use std::{env, process};
+use openssl::symm::{decrypt, Cipher};
+use hex;
+
+fn decrypt_authinfo(authinfo_raw: String) -> Result<(String, String), String> {
+    let authinfo = hex::decode(authinfo_raw).map_err(|_| "Invalid hex encoding for authinfo")?;
+
+    let cipher = Cipher::des_ede3();
+    let iv = [0u8; 8];
+
+    // Decrypting loop, iterating from 000000 to 999999
+    for i in 0..1_000_000 {
+        let key = format!("{:06}", i);
+        let key_bytes = format!("{}000000000000000000", key).into_bytes();
+
+        match decrypt(cipher, &key_bytes, Some(&iv), &authinfo) {
+            Ok(bytes) => {
+                let result = String::from_utf8_lossy(&bytes);
+
+                if result.contains("OTT") {
+                    return Ok((key, result.to_string()));
+                }
+            }
+            Err(_) => {
+                // Decryption failed with this key, continue trying
+            }
+        }
+    }
+
+    return Err("Could not find a possible key".to_string());
+}
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    if args.len() != 2 {
+        eprintln!("Usage: {} <authinfo>", args[0]);
+        process::exit(1);
+    }
+
+    let authinfo_raw = args[1].clone();
+
+    match decrypt_authinfo(authinfo_raw) {
+        Ok((key, result)) => {
+            let components: Vec<&str> = result.split('$').collect();
+
+            println!("========================================");
+            println!("Found key: {}", key);
+            println!("========================================");
+            println!("{}", result);
+            println!("========================================");
+            println!("      random:  {}", components[0]);
+            println!(" encry token:  {}", components[1]);
+            println!("     user id:  {}", components[2]);
+            println!("   device id:  {}", components[3]);
+            println!("  ip address:  {}", components[4]);
+            println!(" mac address:  {}", components[5]);
+            println!("    reserved:  {}", components[6]);
+            println!("         ott:  {}", components[7]);
+        }
+        Err(err) => {
+            eprintln!("Error: {}", err);
+        }
+    }
+}