{"id":172588,"date":"2025-07-14T09:00:00","date_gmt":"2025-07-14T01:00:00","guid":{"rendered":"https:\/\/www.darknet.org.uk\/?p=172588"},"modified":"2025-07-14T17:24:41","modified_gmt":"2025-07-14T09:24:41","slug":"trevorspray-credential-spray-toolkit-for-azure-okta-owa-more","status":"publish","type":"post","link":"https:\/\/www.darknet.org.uk\/2025\/07\/trevorspray-credential-spray-toolkit-for-azure-okta-owa-more\/","title":{"rendered":"TREVORspray &#8211; Credential Spray Toolkit for Azure, Okta, OWA &amp; More"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>TREVORspray<\/strong> is a purpose-built password spraying utility designed for red teams and offensive security operators conducting credential-based attacks across modern authentication systems. Developed and maintained by Black Lantern Security, it supports services such as Microsoft 365, Okta, and Outlook Web Access (OWA), offering precise control, stealth options, and modern detection evasion capabilities for password guessing campaigns.<\/p>\n\n\n\n<figure class=\"wp-block-image size-medium\"><img decoding=\"async\" width=\"640\" height=\"427\" src=\"https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2025\/07\/TREVORspray-Credential-Spray-Toolkit-for-Azure-Okta-OWA-More-640x427.jpg\" alt=\"TREVORspray - Credential Spray Toolkit for Azure, Okta, OWA &amp; More\" class=\"wp-image-172604\" srcset=\"https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2025\/07\/TREVORspray-Credential-Spray-Toolkit-for-Azure-Okta-OWA-More-640x427.jpg 640w, https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2025\/07\/TREVORspray-Credential-Spray-Toolkit-for-Azure-Okta-OWA-More-1024x683.jpg 1024w, https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2025\/07\/TREVORspray-Credential-Spray-Toolkit-for-Azure-Okta-OWA-More-600x400.jpg 600w, https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2025\/07\/TREVORspray-Credential-Spray-Toolkit-for-Azure-Okta-OWA-More.jpg 1536w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Overview<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Password spraying remains a popular initial access vector, especially in hybrid or cloud-first organisations using single sign-on (SSO) or federated identity systems. TREVORspray is designed to optimise this vector by supporting multi-target services while avoiding account lockouts and noisy logging. It builds on the experience of previous tools like MailSniper and Burp macros, while modernising the delivery and targeting mechanisms for 2024 and beyond.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Supported Services<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TREVORspray supports multiple authentication providers, making it suitable for varied environments:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Microsoft 365 login via Azure Active Directory<\/li>\n\n\n\n<li>Okta SSO portals<\/li>\n\n\n\n<li>Outlook Web Access (OWA)<\/li>\n\n\n\n<li>Generic login forms (via POST profiles)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This broad support allows red teams to perform credential spraying across organisations with different cloud configurations or legacy on-prem services using a consistent interface.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Key Features<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Throttle logic to avoid account lockouts<\/li>\n\n\n\n<li>Detailed logging and reporting on valid credentials<\/li>\n\n\n\n<li>Configurable HTTP POST profiles for custom endpoints<\/li>\n\n\n\n<li>Proxy and user-agent support for obfuscation<\/li>\n\n\n\n<li>Fails open on service anomalies to avoid hard stops<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The tool also includes a YAML-based configuration setup, which allows the reuse of common scenarios and easy automation across red team engagements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Detection Avoidance Tactics<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TREVORspray includes several built-in evasion techniques such as randomised User-Agent strings, time-based throttling, and adaptive retries to bypass lockout thresholds and reduce SIEM alerts. These tactics help it blend into regular login activity, mainly when attacks are distributed across multiple IPs or proxies.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition, TREVORspray&#8217;s support for Okta and OWA provides operators with access to portals that often lack the brute-force protections enforced on Microsoft login endpoints, making it more effective than older tools limited to a single login domain.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Use Case in Red Team Campaigns<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Credential spraying remains highly effective in enterprise environments, especially when paired with password reuse or exposed credential lists from data breaches. During red team assessments, TREVORspray allows operators to scale these attacks without alerting SOCs, provided they follow best practices for timing and endpoint selection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is beneficial in pre-phishing phases, where valid email-password combinations can be harvested and reused for lateral movement or mailbox exploitation. When combined with phishing payloads, valid credentials also enable OAuth token theft or MFA fatigue-style attacks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Installing &amp; Using TREVORspray<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To install TREVORspray:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pip install git+https:\/\/github.com\/blacklanternsecurity\/trevorproxy<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Example: &nbsp;Spray against discovered &#8220;token_endpoint&#8221; URL<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>trevorspray -u emails.txt -p 'Welcome123' --url https:\/\/login.windows.net\/b439d764-cafe-babe-ac05-2e37deadbeef\/oauth2\/token<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">And full usage options:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ trevorspray --help\nusage: trevorspray &#91;-h] &#91;-m {owa,okta,auth0,anyconnect,jumpcloud,adfs,msol,example}] &#91;-up USERPASS &#91;USERPASS ...]] &#91;-u USERS &#91;USERS ...]] &#91;-p PASSWORDS &#91;PASSWORDS ...]] &#91;--url URL]\n                   &#91;-r DOMAIN] &#91;--export-tenants FILE] &#91;-t THREADS] &#91;-f] &#91;-d DELAY] &#91;-ld LOCKOUT_DELAY] &#91;-j JITTER] &#91;-e] &#91;-nl] &#91;--ignore-lockouts] &#91;--timeout TIMEOUT] &#91;--random-useragent]\n                   &#91;-6] &#91;--proxy PROXY] &#91;-v] &#91;-s USER@SERVER &#91;USER@SERVER ...]] &#91;-i KEY] &#91;-b BASE_PORT] &#91;-n] &#91;--subnet SUBNET] &#91;--interface INTERFACE]\n\nA password sprayer with the option to load-balance traffic through SSH hosts\n\noptions:\n  -h, --help            show this help message and exit\n\nbasic arguments:\n  -m, --module {owa,okta,auth0,anyconnect,jumpcloud,adfs,msol,example}\n                        Spray module to use (default: msol)\n  -up, --userpass USERPASS &#91;USERPASS ...]\n                        file(s) containing username and password pairs (format: 'username:password')\n  -u, --users USERS &#91;USERS ...]\n                        Usernames(s) and\/or file(s) containing usernames\n  -p, --passwords PASSWORDS &#91;PASSWORDS ...]\n                        Password(s) and\/or file(s) containing passwords\n  --url URL             The URL to spray against\n  -r, --recon, --enumerate DOMAIN\n                        Retrieves MX records and info related to authentication, email, Azure, Microsoft 365, etc. If --usernames are specified, this also enables username enumeration.\n  --export-tenants FILE\n                        Export all discovered tenant domains to a file\n\nadvanced arguments:\n  Round-robin traffic through remote systems via SSH (overrides --threads)\n\n  -t, --threads THREADS\n                        Max number of concurrent requests (default: 1)\n  -f, --force           Try all usernames\/passwords even if they've been tried before\n  -d, --delay DELAY     Sleep for this many seconds between requests\n  -ld, --lockout-delay LOCKOUT_DELAY\n                        Sleep for this many additional seconds when a lockout is encountered\n  -j, --jitter JITTER   Add a random delay of up to this many seconds between requests\n  -e, --exit-on-success\n                        Stop spray when a valid cred is found\n  -nl, --no-loot        Don't execute loot activites for valid accounts\n  --ignore-lockouts     Forces the spray to continue and not stop when multiple account lockouts are detected\n  --timeout TIMEOUT     Connection timeout in seconds (default: 10)\n  --random-useragent    Add a random value to the User-Agent for each request\n  -6, --prefer-ipv6     Prefer IPv6 over IPv4\n  --proxy PROXY         Proxy to use for HTTP and HTTPS requests\n  -v, --verbose, --debug\n                        Show which proxy is being used for each request\n\nSSH Proxy:\n  Round-robin traffic through remote systems via SSH (overrides --threads)\n\n  -s, --ssh USER@SERVER &#91;USER@SERVER ...]\n                        Round-robin load-balance through these SSH hosts (user@host) NOTE: Current IP address is also used once per round\n  -i, -k, --key KEY     Use this SSH key when connecting to proxy hosts\n  -b, --base-port BASE_PORT\n                        Base listening port to use for SOCKS proxies\n  -n, --no-current-ip   Don't spray from the current IP, only use SSH proxies\n\nSubnet Proxy:\n  Send traffic from random addresses within IP subnet\n\n  --subnet SUBNET       Subnet to send packets from\n  --interface INTERFACE\n                        Interface to send packets on<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Comparison with Other Tools<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">While tools like MailSnsiper and CredMaster offer similar functionality, TREVORspray distinguishes itself with ongoing support, flexible configuration, and expanded target compatibility. It also incorporates community contributions and bug fixes rapidly, making it suitable for up-to-date red team operations in enterprise settings.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Operational Cautions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Operators must ensure compliance with client rules of engagement. Credential spraying, even when throttled, can trigger alerts from identity protection platforms or conditional access policies. The tool does not include native MFA bypass capabilities, so further steps are needed to move beyond credential-based access in hardened environments.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Coverage<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For defenders, detection strategies for tools like TREVORspray include monitoring login anomalies in O365 or Okta dashboards, deploying behavioral analytics for repeated login attempts, and enforcing MFA with device or location-based risk scoring. For more on defensive responses to identity-based attacks, see <a href=\"https:\/\/www.microsoft.com\/en-us\/security\/security-insider\/microsoft-digital-defense-report-2023\" target=\"_blank\" rel=\"noreferrer noopener\">Microsoft\u2019s 2023 Identity Defense Trends<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Final Thoughts<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TREVORspray is a well-maintained and actively developed credential spraying toolkit that offers red teams reliable access to common enterprise login portals. Its stealth features, configurability, and broad target support make it one of the most versatile tools available for credential-based attacks in 2025.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can read more or download TREVORspray here: <a href=\"https:\/\/github.com\/blacklanternsecurity\/TREVORspray\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/github.com\/blacklanternsecurity\/TREVORspray<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>TREVORspray is a credential spray toolkit for Azure, Okta, and OWA. 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