https://github.com/egebalci/amber

Reflective PE packer.
https://github.com/egebalci/amber

amber assembly crypter packer payload pe shellcode shellcode-loader stub

Last synced: 28 days ago
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Reflective PE packer.

• Host: GitHub
• URL: https://github.com/egebalci/amber
• Owner: EgeBalci
• License: mit
• Created: 2017-05-30T23:10:05.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2024-02-22T17:44:19.000Z (9 months ago)
• Last Synced: 2024-02-22T18:53:32.365Z (9 months ago)
• Topics: amber, assembly, crypter, packer, payload, pe, shellcode, shellcode-loader, stub
• Language: Go
• Homepage:
• Size: 6.4 MB
• Stars: 1,068
• Watchers: 44
• Forks: 194
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        



  

  


  

    

  

  

    

  

  

    

  

  

    

  

  

    

  



# Inroduction

Amber is a position-independent(reflective) PE loader that enables in-memory execution of native PE files(EXE, DLL, SYS...). It enables stealthy in-memory payload deployment that can be used to bypass anti-virus, firewall, IDS, IPS products, and application white-listing mitigations. Reflective payloads generated by Amber can either be staged from a remote server or executed directly in memory much like a generic shellcode. By default, every generated payload is encoded using the new generation [SGN encoder](https://github.com/EgeBalci/sgn). Amber uses [CRC32_API](https://github.com/EgeBalci/crc32_api) and [IAT_API](https://github.com/EgeBalci/iat_api) for inconspicuously resolving the Windows API function addresses. After the PE file is loaded and executed in memory, the reflective payload is erased for evading memory scanners. 

# Installation

Pre-compiled binaries can be found under [releases](https://github.com/EgeBalci/amber/releases).

***Building From Source***

The only dependency for building the source is the [keystone engine](https://github.com/keystone-engine/keystone), follow [these](https://github.com/keystone-engine/keystone/blob/master/docs/COMPILE.md) instructions for installing the library. Once libkeystone is installed on the system, simply just go get it ツ

```

go install github.com/EgeBalci/amber@latest

```

***Docker Install***

[![Docker](http://dockeri.co/image/egee/amber)](https://hub.docker.com/r/egee/amber/)

```

docker pull egee/amber

docker run -it egee/amber

```

# Usage



  



The following table lists switches supported by the amber.

  

    Switch

    Type

    Description

  

  

    -f,--file

    string

    Input PE file.

  

  

    -o,--out

    string

    Output binary payload file name.

  

  

    -e

    int

    Number of times to encode the generated reflective payload

   

  

  

    --iat

    bool

    Use IAT API resolver block instead of CRC API resolver block

  

  

  

    -l

    int

    Maximum number of bytes for obfuscation (default 5)

    

  

    --sys

    bool

    Perform raw syscalls. (only x64)

    

  

    --scrape

    bool

    Scrape magic byte and DOS stub from PE.

    

  

**Example Usage**

- Generate reflective payload.

```

amber -f test.exe

```

- Generate reflective payload with IAT API resolver and encode the final payload 10 times.

```

amber -e 10 --iat -f test.exe

``` 

***Docker Usage***

```

docker run -it -v /tmp/:/tmp/ amber -f /tmp/file.exe

```

# Demo

- [NOPcon 2018 DEMO](https://www.youtube.com/watch?v=lCPdKSH6RMc)

- [Pentest.blog - Deploying Reflective PE Files With Metasploit](https://www.youtube.com/watch?v=3en0ftnjEpE)

- [Pentest.blog - Deploying Reflective Ransomware POC](https://www.youtube.com/watch?v=JVv_spX6D4U)