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IRS (Impersonate-RS)

💡 IRS is a library version of https://github.com/zblurx/impersonate-rs, zblurx

Reimplementation of Defte Impersonate in plain Rust. For more informations about it, see this blogpost.

The token impersonation approach is a bit different from Defte Impersonate : here you have to select a PID where you want to impersonate the Primary Token, then irs.exe will:

  1. Duplicate the token
  2. Spawn a named pipe
  3. Execute the command with the targeted token through CreateProcessWithTokenW and output the result to the named pipe
  4. Collect the command output from the named pipe
  5. Print the command output

This approach will allow you to impersonate any user on the target computer as long as you have administrator privileges (No NT SYSTEM needed) and is usable with and without GUI.

Summary

Build

# Build it from docker
git clone https://github.com/zblurx/impersonate-rs
cd impersonate-rs
make release

# Or from cargo in your host
make windows

# Build documentation
cargo doc --open --no-deps

# More information
make help

Usage

Like a static binary :

X:\>irs.exe --help
IRS (Impersonate-RS) It's a windows token impersonation tool written in Rust. zblurx <https://twitter.com/_zblurx>

Usage: irs.exe <COMMAND>

Commands:
  list  List all process PID available to impersonate Tokens
  exec  Execute command line from impersonate PID
  help  Print this message or the help of the given subcommand(s)

Options:
  -h, --help  Print help
X:\>irs.exe exec --help
Execute command line from impersonate PID

Usage: irs.exe exec [OPTIONS] --pid <pid> --command <command>

Options:
  -p, --pid <pid>          PID to impersonate
  -c, --command <command>  Command to execute
  -v...                    Set the level of verbosity
  -h, --help               Print help

list

The list command list processes, with their session id, token type and associated user.

X:\>irs.exe list
                  
[winlogon.exe                    ] [PROCESS: 624  ] [SESSION: 1 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]
[lsass.exe                       ] [PROCESS: 672  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]
[svchost.exe                     ] [PROCESS: 780  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]
[fontdrvhost.exe                 ] [PROCESS: 788  ] [SESSION: 0 ] [TYPE: Primary] [Low   ] [USER: Font Driver Host\UMFD-0     ]
[fontdrvhost.exe                 ] [PROCESS: 796  ] [SESSION: 1 ] [TYPE: Primary] [Low   ] [USER: Font Driver Host\UMFD-1     ]
[svchost.exe                     ] [PROCESS: 888  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\SERVICE RÉSEAU  ]
[svchost.exe                     ] [PROCESS: 948  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]
[dwm.exe                         ] [PROCESS: 412  ] [SESSION: 1 ] [TYPE: Primary] [System] [USER: Window Manager\DWM-1        ]
[svchost.exe                     ] [PROCESS: 460  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]
[svchost.exe                     ] [PROCESS: 696  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\SERVICE LOCAL   ]
(...)
[svchost.exe                     ] [PROCESS: 836  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\SERVICE LOCAL   ]
[svchost.exe                     ] [PROCESS: 908  ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\SERVICE LOCAL   ]
[svchost.exe                     ] [PROCESS: 1060 ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\SERVICE LOCAL   ]
[svchost.exe                     ] [PROCESS: 1088 ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\SERVICE LOCAL   ]
[svchost.exe                     ] [PROCESS: 1124 ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]
[svchost.exe                     ] [PROCESS: 1176 ] [SESSION: 0 ] [TYPE: Primary] [System] [USER: AUTORITE NT\Système         ]

exec

The exec command open the target process id in the pid argument, duplicate its token and execute a command with the new token.

X:\>whoami
adcs1\administrator

X:\>irs.exe exec --pid 5540 --command whoami
[2023-06-15T09:17:00Z INFO  irs::utils::impersonate] Impersonate user WAZA\e.cartman
waza\e.cartman

X:\>irs.exe exec -p 5540 -c whoami
[2023-06-15T09:17:00Z INFO  irs::utils::impersonate] Impersonate user WAZA\e.cartman
waza\e.cartman 

library

Or directly on your Rust project like:

Cargo.toml:

[dependencies]
irs = { path = "/data/02-GIT/github/impersonate-rs/", version = "0.2.1" }

Or with github repo:

[dependencies]
irs = { git = "https://github.com/g0h4n/impersonate-rs", version = "0.2.1" }

main.rs:

use irs::utils::*;

fn main() {
    impersonate::se_priv_enable().expect("[!] Failed to run se_priv_enable()");
    token::enum_token().expect("[!] Failed to run enum_token()");
}

To see all the available functions use the following command to open the Rust documentation.

cargo doc --open --no-deps

Demo

Contributors

Many thanks to g0h4n for his contribution to the repo (made it a library, added color, clean up the code, ect.)

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