shadow – Firefox Heap Exploitation Tool (jemalloc)

Use Netsparker


shadow is a new, extended (and renamed version) of a Firefox heap exploitation tool, which is quite a swiss army knife for Firefox/jemalloc heap exploitation.

shadow - Firefox Heap Exploitation Tool (jemalloc)

If you want to dive in really deep to this tool, and the technicalities behind it check this out – OR’LYEH? The Shadow over Firefox [PDF]

Support

shadow has been tested with the following:

  • Windows 8.1 x86-64
  • Windows 7 SP1 x86 and x86-64
  • WinDBG 6.3.9600.17200 x86 (since Firefox stable is x86-only currently)
  • pykd version 0.3.0.36
  • Many different Firefox releases, but extensively with: 31.7.0-esr, 35.0.1, 36.0.1, 38.0.5, 39.0, 40.0, 43.0. 44.0.

Usage

When you issue a jemalloc-specific command for the first time, shadow parses all jemalloc metadata it knows about and saves them to a Python pickle file. Subsequent commands use this pickle file instead of parsing the metadata from memory again in order to be faster.

When you know that the state of jemalloc metadata has changed (for example when you have made some allocations or have triggered a garbage collection), use the jeparse command to re-parse the
metadata and re-create the pickle file.

Symbol Support

The symbol command allows you to search for SpiderMonkey and DOM classes (and structures) of specific sizes. This is useful when you’re trying to exploit use-after-free bugs, or when you want to position interesting victim objects to overwrite/corrupt.

In the “auxiliary” directory you can find a small PDB parsing utility named symhex. Run it on “xul.pdb” to generate the Python pickle file that shadow expects in the “pdb” directory (as “pdb/xul-VERSION.pdb.pkl”). Before running symhex make sure you have registered “msdia90.dll”.

You can download shadow here:

shadow-master.zip

Or read more here.

Posted in: Exploits/Vulnerabilities, Hacking Tools, Secure Coding


Latest Posts:


Malcom - Malware Communication Analyzer Malcom – Malware Communication Analyzer
Malcom is a Malware Communication Analyzer designed to analyze a system's network communication using graphical representations of network traffic.
WepAttack - WLAN 802.11 WEP Key Hacking Tool WepAttack – WLAN 802.11 WEP Key Hacking Tool
WepAttack is a WLAN open source Linux WEP key hacking tool for breaking 802.11 WEP keys using a wordlist based dictionary attack.
Eraser - Windows Secure Erase Hard Drive Wiper Eraser – Windows Secure Erase Hard Drive Wiper
Eraser is a hard drive wiper for Windows which allows you to run a secure erase and completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns.
Insecure software versions are a problem Web Security Stats Show XSS & Outdated Software Are Major Problems
Netsparker just published some anonymized Web Security Stats about the security vulnerabilities their online solution identified on their users’ web applications and web services during the last 3 years.
CTFR - Abuse Certificate Transparency Logs For HTTPS Subdomains CTFR – Abuse Certificate Transparency Logs For HTTPS Subdomains
CTFR is a Python-based tool to Abuse Certificate Transparency Logs to get subdomains from a HTTPS website in a few seconds.
testssl.sh - Test SSL Security Including Ciphers, Protocols & Detect Flaws testssl.sh – Test SSL Security Including Ciphers, Protocols & Detect Flaws
testssl.sh is a free command line tool to test SSL security, it checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.


Comments are closed.