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pcqq_DANGER_rekey.py
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pcqq_DANGER_rekey.py
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print("别用！！！！！！！")
print("必定损坏原始数据库！")
print("rekey 之后是不能用原先的 key 解锁的！")
# print("理论上可能会损坏原数据库，慎用！如果要用请自行去除下一行的 exit()")
exit()
import frida
import sys
import psutil
import shutil
import time
import os
QQ_PID = None
# GUI -> ['C:\\Program Files (x86)\\Tencent\\QQ\\Bin\\QQ.exe']
# 要hook的 -> ['C:\\Program Files (x86)\\Tencent\\QQ\\Bin\\QQ.exe', '/hosthwnd=2164594', '/hostname=QQ_IPC_{12345678-ABCD-12EF-9976-18373DEAB821}', '/memoryid=0', 'C:\\Program Files (x86)\\Tencent\\QQ\\Bin\\QQ.exe']
exit()
for pid in psutil.pids():
p = psutil.Process(pid)
if p.name() == "QQ.exe" and len(p.cmdline()) > 1:
QQ_PID = pid
del p
break
if QQ_PID is None:
print("QQ not launched. exit.")
sys.exit(1)
print("QQ pid is:", QQ_PID)
exit()
demo_script = """
var pMessageBoxW = Module.findExportByName("user32.dll", 'MessageBoxA')
var lpText = Memory.allocAnsiString("I'm New MessageBox");
var funMsgBox = new NativeFunction(pMessageBoxW, 'uint32',['uint32','pointer','pointer','uint32']);
funMsgBox(0, ptr(lpText), ptr(lpText), 0);
"""
hook_script = """
function buf2hex(buffer) {
const byteArray = new Uint8Array(buffer);
const hexParts = [];
for(let i = 0; i < byteArray.length; i++) {
const hex = byteArray[i].toString(16);
const paddedHex = ('00' + hex).slice(-2);
hexParts.push(paddedHex);
}
return '0x' + hexParts.join(', 0x');
}
const kernel_util = Module.load('KernelUtil.dll');
function single_function(pattern) {
pattern = pattern.replaceAll("##", "").replaceAll(" ", "").toLowerCase().replace(/\\s/g,'').replace(/(.{2})/g,"$1 ");
var akey_function_list = Memory.scanSync(kernel_util.base, kernel_util.size, pattern);
if (akey_function_list.length > 1) {
send("pattern FOUND MULTI!!")
send(pattern)
send(akey_function_list)
send("!!exit")
}
if (akey_function_list.length == 0) {
send("pattern NOT FOUND!!")
send("!!exit")
}
return akey_function_list[0]['address'];
}
// const key_function = Module.findExportByName("KernelUtil.dll", 'sqlite3_key')
const key_function = single_function("55 8b ec 56 6b 75 10 11 83 7d 10 10 74 0d 68 17 02 00 00 e8")
const name_function = single_function("55 8B EC FF 75 0C FF 75 08 E8 B8 D1 02 00 59 59 85")
const rekey_function = single_function("##558BEC837D1010740D682F020000E8")
const close_function = single_function("##55 8B EC 56 8B 75 08 85 F6 74 6D 56 E87C 3E 01 00")
const exec_function = single_function("##558BEC8B45088B40505DC3")
// send(key_function)
var name_function_caller = new NativeFunction(name_function, 'pointer', ['pointer', 'pointer']);
var rekey_function_caller = new NativeFunction(rekey_function, 'int', ['pointer', 'pointer', 'int']);
var key_function_caller = new NativeFunction(key_function, 'int', ['pointer', 'pointer', 'int']);
var close_function_caller = new NativeFunction(close_function, 'int', ['pointer', 'int']);
var exec_function_caller = new NativeFunction(exec_function, 'int', ['pointer', 'pointer', 'pointer', 'pointer', 'pointer']);
var TARGET_KEY_LENGTH = 16;
var key_length = 0;
var dbName;
var empty_password = Memory.alloc(TARGET_KEY_LENGTH)
var original_password = Memory.alloc(TARGET_KEY_LENGTH)
empty_password.writeByteArray(Array(TARGET_KEY_LENGTH).fill(0))
const no_sync = "PRAGMA synchronous=ON"
const no_sync_address = Memory.allocUtf8String(no_sync)
const TEST_PWD_SQL = Memory.allocUtf8String("SELECT count(*) FROM sqlite_master;")
var store_args_1, store_args_2, target_db;
var should_copy = false;
var calling_key = false;
var should_show = false;
function is_db_ok(){
return !exec_function_caller(target_db, TEST_PWD_SQL, NULL, NULL, NULL);
}
Interceptor.attach(key_function, {
onEnter: function (args, state) {
if(calling_key){ return; }
should_copy = false;
should_show = false;
console.log("[+] key found:");
dbName = name_function_caller(args[0], NULL).readUtf8String();
if (dbName.replaceAll('/', '\\\\').split('\\\\').pop().toLowerCase() == 'Msg3.0.db'.toLowerCase() || false) {
should_show = true;
target_db = args[0];
// disable memory cache
//console.log("¦- db: " + args[0]);
key_length = args[2].toInt32()
console.log("¦- nKey: " + key_length);
//console.log("¦- pkey: " + args[1]);
console.log("¦- *pkey: " + buf2hex(args[1].readByteArray(key_length)));
console.log("¦- dbName: " + name_function_caller(args[0], NULL).readUtf8String());
//console.log("¦- *pkey: " + buf2hex(Memory.readByteArray(new UInt64(args[1]), key_length)));
if(key_length == TARGET_KEY_LENGTH){
Memory.copy(original_password, args[1], key_length)
should_copy = true;
}
}
},
onLeave: function (retval, state) {
if(calling_key){ return; }
if(!should_show){ return; }
console.log("¦- sqlite3_key return: " + retval);
console.log("¦- is_db_ok: " + is_db_ok());
if (should_copy) {
// exec_function_caller(target_db, no_sync_address, NULL, NULL, NULL);
console.log("rekey to NULL: " + rekey_function_caller(target_db, empty_password, key_length))
console.log("¦- is_db_ok: " + is_db_ok());
// console.log(close_function_caller(target_db, 0))
send("!!MSG3.0: " + dbName)
recv(function(){}).wait();
console.log("rekey to orig: " + rekey_function_caller(target_db, original_password, key_length))
console.log("¦- is_db_ok: " + is_db_ok());
calling_key = true;
// console.log(key_function_caller(target_db, original_password, key_length))
calling_key = false;
}
}
});
var rekey_show_result = false;
Interceptor.attach(rekey_function, {
onEnter: function (args, state) {
console.log("[*] rekey:");
dbName = name_function_caller(args[0], NULL).readUtf8String();
rekey_show_result = false
if (dbName.replaceAll('/', '\\\\').split('\\\\').pop().toLowerCase() == 'Msg3.0.db'.toLowerCase() || false) {
rekey_show_result = true;
//console.log("¦- db: " + args[0]);
key_length = args[2].toInt32()
console.log("¦- nKey: " + key_length);
//console.log("¦- pkey: " + args[1]);
console.log("¦- *pkey: " + buf2hex(args[1].readByteArray(key_length)));
console.log("¦- dbName: " + name_function_caller(args[0], NULL).readUtf8String());
//console.log("¦- *pkey: " + buf2hex(Memory.readByteArray(new UInt64(args[1]), key_length)));
}
},
onLeave: function (retval, state) {
if(!rekey_show_result){ return; }
console.log("¦- sqlite3_rekey return: " + retval);
}
});
"""
session = frida.get_local_device().attach(QQ_PID)
script = session.create_script(hook_script)
message_seq = 0
def on_message(message, data):
global message_seq
if message["type"] == "send":
if message["payload"] == "!!exit":
exit(3)
if message["payload"].startswith("!!MSG3.0: "):
filename = message["payload"][10:]
script.post({})
new_filename = (
filename.split("\\")[-1]
+ "_"
+ str(message_seq)
+ "_"
+ str(time.time()).split(".")[0]
+ ".db"
)
message_seq += 1
print("Copying decrypted file:", filename, "to", new_filename)
shutil.copyfile(filename, new_filename)
file1 = open(new_filename, "rb")
extra_flag = False
# detect extra sqlite header "SQLite header 3"
if file1.read(15) == b"SQLite header 3":
file1.seek(1024)
if file1.read(15) == b"SQLite format 3":
file1.seek(1024)
extra_flag = True
print("NEW PLAIN TEXT DB detected!")
if not extra_flag:
file1.seek(0)
print("hmm db seems still encrypted... anything wrong?")
file1.close()
# remove extra 1024 bytes header of a huge file
if extra_flag:
file1 = open(new_filename, "rb")
file2 = open(new_filename + ".tmp", "wb")
file1.seek(1024)
shutil.copyfileobj(file1, file2)
file1.close()
file2.close()
os.remove(new_filename)
os.rename(new_filename + ".tmp", new_filename)
print("Done. File Path:")
print(os.path.abspath(new_filename))
else:
print(message["payload"])
elif message["type"] == "error":
print(message["stack"])
def on_destroyed():
print("process exited.")
os._exit(0)
script.on("message", on_message)
script.on("destroyed", on_destroyed)
script.load()
print("hooked.")
sys.stdin.read()