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André Baptista

@0xacb • 19,211 subscribers

Hacker grinding for L1gh7 and Fr33dφm, straight outta the cosmic realm. Co-founder @ethiack

Shorts

A researcher found an Instagram vuln letting anyone access Note videos with audio that should've been silent by default. Just by paying attention and using Devtools :) Meta paid $1000 for this finding. Video credits: i12gocaj

A researcher found an Instagram vuln letting anyone access Note videos with audio that should've been silent by default. Just by paying attention and using Devtools :) Meta paid $1000 for this finding. Video credits: i12gocaj

62,609 views

DMARC can reveal more domains associated with a target. allows you to find domains using the same DMARC record. Check it out 👇 There's also a python tool:

DMARC can reveal more domains associated with a target. allows you to find domains using the same DMARC record. Check it out 👇 There's also a python tool:

66,285 views

When testing GraphQL APIs make sure to run graphw00f ( to fingerprint the specific GraphQL implementation the application is running. Then you can review the Threat Matrix to get likely attack vectors.

When testing GraphQL APIs make sure to run graphw00f ( to fingerprint the specific GraphQL implementation the application is running. Then you can review the Threat Matrix to get likely attack vectors.

38,561 views

RFC 2047 "encoded-word" is crazy! It lets you smuggle encoded payloads into email addresses and the craziest thing is that some parsers decode it before validation 👇 Shout out to Gareth Heyes \u2028 for this 🔥

RFC 2047 "encoded-word" is crazy! It lets you smuggle encoded payloads into email addresses and the craziest thing is that some parsers decode it before validation 👇 Shout out to Gareth Heyes \u2028 for this 🔥

32,474 views

Manually hunting for endpoints and hidden parameters in web apps? Another nice tool from / XNL -н4cĸ3r (and @xnl-h4ck3r in the new Sky) is xnLinkFinder that crawls targets, extracts links, discovers secrets, and builds target-specific wordlists. All from Burp files, ZAP exports, HAR files, or URLs. Try it out 👇

Manually hunting for endpoints and hidden parameters in web apps? Another nice tool from / XNL -н4cĸ3r (and @xnl-h4ck3r in the new Sky) is xnLinkFinder that crawls targets, extracts links, discovers secrets, and builds target-specific wordlists. All from Burp files, ZAP exports, HAR files, or URLs. Try it out 👇

14,437 views

We won the MVH title at #h1702 🔥 Ben Sadeghipour Alex Chapman

We won the MVH title at #h1702 🔥 Ben Sadeghipour Alex Chapman

39,412 views

If you need to generate a target-specific wordlist, make sure to check out / XNL -н4cĸ3r (and @xnl-h4ck3r in the new Sky) GAP extension. It will scan for sus parameters and generate you a complete wordlist with one click of a button. See it in action 👇

If you need to generate a target-specific wordlist, make sure to check out / XNL -н4cĸ3r (and @xnl-h4ck3r in the new Sky) GAP extension. It will scan for sus parameters and generate you a complete wordlist with one click of a button. See it in action 👇

13,642 views

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Found an XSS but got blocked by the CSP? has a compiled list of ways to bypass the Content-Security Policy. Check out the video below 👇
0:25
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Found an XSS but got blocked by the CSP? has a compiled list of ways to bypass the Content-Security Policy. Check out the video below 👇

André Baptista

48,116 views • 9 months ago

Our pentesting agent found a 1-click ATO to RCE in Gateway Control UI in under 2 hours. Local instances can also be exploited with one click. Patched in main, update now. Watch the exploit 👇
0:23
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Our pentesting agent found a 1-click ATO to RCE in Gateway Control UI in under 2 hours. Local instances can also be exploited with one click. Patched in main, update now. Watch the exploit 👇

André Baptista

24,488 views • 5 months ago

Hidden or disabled fields are commonly overlooked, but they can still open the door to some cool bugs. Try creating a bookmarklet to instantly reveal these fields. Here are some quick examples you can copy and paste: 🔖 Enable all disabled or readonly fields: javascript:(function(){document.querySelectorAll('[disabled],[readonly]').forEach(el=>{el.removeAttribute('disabled');el.removeAttribute('readonly');});})(); 🔖 Unhide elements styled with display: none: javascript:(function(){document.querySelectorAll('[style*="display: none"]').forEach(el=>{
0:23
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Hidden or disabled fields are commonly overlooked, but they can still open the door to some cool bugs. Try creating a bookmarklet to instantly reveal these fields. Here are some quick examples you can copy and paste: 🔖 Enable all disabled or readonly fields: javascript:(function(){document.querySelectorAll('[disabled],[readonly]').forEach(el=>{el.removeAttribute('disabled');el.removeAttribute('readonly');});})(); 🔖 Unhide elements styled with display: none: javascript:(function(){document.querySelectorAll('[style*="display: none"]').forEach(el=>{

André Baptista

47,187 views • 1 year ago

If you found a package.json file in the wild, you might find some internal packages vulnerable to a dependency confusion attack 👀 Check for it quicker using this cool new tool by JSMon: 👇
0:25
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If you found a package.json file in the wild, you might find some internal packages vulnerable to a dependency confusion attack 👀 Check for it quicker using this cool new tool by JSMon: 👇

André Baptista

23,127 views • 8 months ago

Somehow, Chrome 130+ started parsing the hostname from javascript URLs again and this can be used for a constrained XSS 🤯 This was the second solution for the recent CTF challenge.
0:30
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Somehow, Chrome 130+ started parsing the hostname from javascript URLs again and this can be used for a constrained XSS 🤯 This was the second solution for the recent CTF challenge.

André Baptista

24,966 views • 1 year ago

Just released a new recollapse version thanks to Ryan Barnett (B0N3) and Angel Hacker after their talk in Black Hat today. What’s new? 💥Mode 6: Fuzz case folding/upper/lower 💥 Mode 7: Fuzz byte truncations 💥 Recollapse is now available to use as a python library and available on Python Package Index Check it out 👇
0:38
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Just released a new recollapse version thanks to Ryan Barnett (B0N3) and Angel Hacker after their talk in Black Hat today. What’s new? 💥Mode 6: Fuzz case folding/upper/lower 💥 Mode 7: Fuzz byte truncations 💥 Recollapse is now available to use as a python library and available on Python Package Index Check it out 👇

André Baptista

17,534 views • 11 months ago

This is how DOM clobbering works. When you create an element with an id, the browser automatically creates a global variable for that ID: Now points to that single element. But when you create multiple elements with the same id: Now becomes an HTMLCollection, not a single element. Add a name attribute: And now points to that element (works in Chromium/WebKit browsers, but not Firefox). Now combine that with a common JS pattern like: var someObject = window.someObject || {}; This is meant to provide a fallback if the global doesn't exist. However, if window.someObject has been clobbered by injected HTML, the fallback silently trusts a DOM object instead of a real JS object. Now imagine this JS logic: let imgSrc = someObject.avatar; If an attacker clobbered someObject.avatar with: If HTML is set via innerHTML or similar, then this could render as: Which triggers XSS! Here's a quick walkthrough of the DOM clobbering Web Security Academy lab👇 Try this lab:
1:12
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This is how DOM clobbering works. When you create an element with an id, the browser automatically creates a global variable for that ID: Now points to that single element. But when you create multiple elements with the same id: Now becomes an HTMLCollection, not a single element. Add a name attribute: And now points to that element (works in Chromium/WebKit browsers, but not Firefox). Now combine that with a common JS pattern like: var someObject = window.someObject || {}; This is meant to provide a fallback if the global doesn't exist. However, if window.someObject has been clobbered by injected HTML, the fallback silently trusts a DOM object instead of a real JS object. Now imagine this JS logic: let imgSrc = someObject.avatar; If an attacker clobbered someObject.avatar with: If HTML is set via innerHTML or similar, then this could render as: Which triggers XSS! Here's a quick walkthrough of the DOM clobbering Web Security Academy lab👇 Try this lab:

André Baptista

16,631 views • 1 year ago

JS, Python & Ruby all disagree on this regex rule 🤔👇
2:12
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JS, Python & Ruby all disagree on this regex rule 🤔👇

André Baptista

17,284 views • 1 year ago

Need help writing reports? Check out JS0N Haddix's Bounty Plz GPT ✍️ Just give it a host name and a brief description of your finding and it will do the rest! (🔗 in comments)
0:20
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Need help writing reports? Check out JS0N Haddix's Bounty Plz GPT ✍️ Just give it a host name and a brief description of your finding and it will do the rest! (🔗 in comments)

André Baptista

16,459 views • 1 year ago

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