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[原创]自己动手从iOS Keychain中恢复保存的Wifi密码
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发表于: 2014-11-12 21:53
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最近在学用Theos编写插件和小工具，本来打算自己动手写个类似Wifi Passwords的工具，用于查看保存在iOS设备中的Wifi密码的。不过搜了下居然没找到具体的实现方法。
本来以为iOS和Android一样保存在某个plist里(Android的Wifi密码明文保存在/data/misc/wifi/wpa_supplicant.conf)，不过Google了才发现iOS虽然在 /private/var/preferences/SystemConfiguration/com.apple.wifi.plist 里保存了Wifi信息，但密码却是存储在Keychain中的，而且网上没有给出具体的读取办法
鉴于对Keychain Services不熟，只好用 Hopper Disassembler 反汇编WiFiPasswords自己看了。代码不多，大部分都是和UITableView相关的内容，排除掉这些很快发现 -[RootViewController refresh] 就是要找的函数：
这里读取了 /private/var/preferences/SystemConfiguration/com.apple.wifi.plist 的List of known networks中的信息(意义不明，实际上直接用SecItemCopyMatching也是能获取到Wifi名的，而且它后面也这样做了)。到机器上用plutil查看该plist文件，会看到类似下面的内容：
"List of known networks" = (
{
"80211D_IE" = {
"IE_KEY_80211D_COUNTRY_CODE" = JP;
};
"80211W_ENABLED" = 0;
AGE = 41;
"AP_MODE" = 2;
"ASSOC_FLAGS" = 1;
"BEACON_INT" = 20;
BSSID = "00:2e:1f:54:1d:82";
CAPABILITIES = 1041;
CHANNEL = 12;
...
CFTypeRef kSecClassGenericPassword ; CFTypeRef kSecClassInternetPassword ; CFTypeRef kSecClassCertificate ; CFTypeRef kSecClassKey ; CFTypeRef kSecClassIdentity;
#import <Security/Security.h>
int main(int argc, char **argv, char **envp)
{
NSMutableDictionary *query = [NSMutableDictionary dictionary];
[query setObject:(__bridge id)kSecClassGenericPassword forKey:(__bridge id)kSecClass];
[query setObject:(__bridge id)kSecMatchLimitAll forKey:(__bridge id)kSecMatchLimit];
[query setObject:(__bridge id)@"AirPort" forKey:(__bridge id)kSecAttrService];
[query setObject:(__bridge id)kCFBooleanTrue forKey:(__bridge id)kSecReturnAttributes];
CFTypeRef result = NULL;
OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)query, &result);
if (status != errSecSuccess) {
printf("[ERROR] SecItemCopyMatching() failed! error = %d\n", (int)status);
return;
}
NSArray *wifi_list = (NSArray *)result;
for (int i = 0; i < wifi_list.count; i++) {
NSDictionary *wifi = (NSDictionary*)wifi_list[i];
NSString *output = [NSString stringWithFormat:@"%@", wifi];
printf("%s\n", [output cStringUsingEncoding:NSUTF8StringEncoding]);
}
if (result != NULL) {
CFRelease(result);
}
return 0;
}
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>application-identifier</key> <string>com.zzz.my-idevice-tools</string> <key>get-task-allow</key> <true/> <key>keychain-access-groups</key> <array> <string>apple</string> </array> </dict> </plist>
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还是IDA看的直观:
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[QUOTE=zhuliang;1330557]这个程序也可以实现。
https://github.com/ptoomey3/Keychain-Dumper[/QUOTE] 赞！已经star，早点看到就不用去反汇编了 
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[QUOTE=suntiger;1330604]还是IDA看的直观:
确实，IDA这个易懂多了。Hopper Disassembler虽然也有正确的字符串标注，不过 movw r2, #11a8 movt r2, #0xd add r2, pc 跟进去才知道，实际就是取 @"/private/var/preferences/SystemConfiguration/com.apple.wifi.plist" |
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