databouncing is the art of indirect exfiltration using hostname lookups as a transport medium - click the link, snoop around.

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Joined April 2024
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Approved 🫡
Been building on this idea databouncing.io/bouncing-wit… Using signup forms for databounce/data exfil Got the POC working: Playwright automation to register emails, triggers DNS lookups -> my listener catches + send the file to a Discord webhook. data-exfil using facebook reg :D!
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Hmmm Databouncing + Fastflux, hmmmm
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If you want to databounce via email gist.github.com/yosignals/dc… This is crude but functional It will use the hostname space as you’d expect, 500 recipients per send
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Replying to @SwiftOnSecurity
Ubi looks great but, looks locked in, synology has a good balance of flexibility and integration (just doesnt have that slick ubi UX)
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we feel that the only reason Databouncing hasn’t gotten the attention it deserves is because the PoCs have mostly been fun demonstrations of its capability - if you could share for reach 🙌❤️ 4/4
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I’d be happy putting a reward out for whoever authors something stable first, you’d get support from myself @DeathsPirate and @N1ckDunn where we have time 3/4
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While databouncing is a solid egress, it might be a good time to introduce SSRF as a means to pull data in to close the loop for data in data out leaning on trusted and ‘useful idiots’ online, keeping infrastructure heavily fragmented and awful to track 2/4
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A little bit of positive downtime, and we’re back at it We’re looking for some assistance in building databouncing integration into C2 frameworks (Sliver, Tuoni, Merlin, others ?) 1/4
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checkcybersecurity.service.n… great for businesses, and databouncing aficionados ?
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While databouncing is pretty unstoppable in most cases it’s always nice if you’re gifted even more: PAN-234015 The X-Forwarded-For (XFF) value is not displayed in traffic logs.
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Narrowcasting is the term, and it’s made things very ugly 🫠
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I'll be speaking at Defcon Gloucester this evening on all things @databouncing. Hopefully see some of you later!
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Seeing lots of databouncing candidates on Chinese infrastructure 🥸
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Ayo #bugbounty hunters, you want to squeeze some money out of those lame host header poisonings ? Check out CWE-441 - then check out #databouncing - all you have to do is argue with triage until you are a millionaire 😁🫡
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Replying to @teamcymru_S2
@teamcymru_S2 do you fancy a run at countermeasures ?
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without actually putting any data on any services of those domains, this is industrialized exfiltration and no one seems to have an answer.
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