CryptoCat
@cryptocat.me
Security Researcher 😈
Hacking Content @ https://yt.cryptocat.me 💜
Hacking Content @ https://yt.cryptocat.me 💜
Congratulations to Bhavya for being the first to capture all 5 flags on my @hackinghub.bsky.social challenge! 🥳🎉
We've released a small patch. If you were stuck on flag 3, please re-download files! Good time to practice your patch-diffing 👀
app.hackinghub.io/hubs/mother-...
We've released a small patch. If you were stuck on flag 3, please re-download files! Good time to practice your patch-diffing 👀
app.hackinghub.io/hubs/mother-...
November 14, 2025 at 2:03 PM
Congratulations to Bhavya for being the first to capture all 5 flags on my @hackinghub.bsky.social challenge! 🥳🎉
We've released a small patch. If you were stuck on flag 3, please re-download files! Good time to practice your patch-diffing 👀
app.hackinghub.io/hubs/mother-...
We've released a small patch. If you were stuck on flag 3, please re-download files! Good time to practice your patch-diffing 👀
app.hackinghub.io/hubs/mother-...
So, who's gonna blood my new @hackinghub.bsky.social challenge? 😼
Challenge 🔗 app.hackinghub.io/hubs/mother-...
First 3 solves will earn the "Hacker Cat" role in my discord server ➡️ discord.cryptocat.me
#ctf #capturetheflag #ethicalhacking #cybersecurity #infosec #offsec
Challenge 🔗 app.hackinghub.io/hubs/mother-...
First 3 solves will earn the "Hacker Cat" role in my discord server ➡️ discord.cryptocat.me
#ctf #capturetheflag #ethicalhacking #cybersecurity #infosec #offsec
November 13, 2025 at 2:52 PM
So, who's gonna blood my new @hackinghub.bsky.social challenge? 😼
Challenge 🔗 app.hackinghub.io/hubs/mother-...
First 3 solves will earn the "Hacker Cat" role in my discord server ➡️ discord.cryptocat.me
#ctf #capturetheflag #ethicalhacking #cybersecurity #infosec #offsec
Challenge 🔗 app.hackinghub.io/hubs/mother-...
First 3 solves will earn the "Hacker Cat" role in my discord server ➡️ discord.cryptocat.me
#ctf #capturetheflag #ethicalhacking #cybersecurity #infosec #offsec
My writeup for the September Dojo challenge on @yeswehack.bsky.social - Chainfection ⛓
The challenge combined multiple CVEs, creating a chain of vulnerabilities: SQL injection -> file write + path traversal -> SSTI (RCE)
Read the full writeup ➡️ book.cryptocat.me/blog/ctf/mon...
The challenge combined multiple CVEs, creating a chain of vulnerabilities: SQL injection -> file write + path traversal -> SSTI (RCE)
Read the full writeup ➡️ book.cryptocat.me/blog/ctf/mon...
October 28, 2025 at 4:51 PM
My writeup for the September Dojo challenge on @yeswehack.bsky.social - Chainfection ⛓
The challenge combined multiple CVEs, creating a chain of vulnerabilities: SQL injection -> file write + path traversal -> SSTI (RCE)
Read the full writeup ➡️ book.cryptocat.me/blog/ctf/mon...
The challenge combined multiple CVEs, creating a chain of vulnerabilities: SQL injection -> file write + path traversal -> SSTI (RCE)
Read the full writeup ➡️ book.cryptocat.me/blog/ctf/mon...
I made a new CTF challenge! It will run until the 30th of October 🎃
There's no prizes, but the first 3 solves will earn themselves the "Hacker Cat" rank in my discord server 😸
Download "Ultimate Calculator 3000" to get started ➡ discord.cryptocat.me
There's no prizes, but the first 3 solves will earn themselves the "Hacker Cat" rank in my discord server 😸
Download "Ultimate Calculator 3000" to get started ➡ discord.cryptocat.me
October 22, 2025 at 10:08 AM
I made a new CTF challenge! It will run until the 30th of October 🎃
There's no prizes, but the first 3 solves will earn themselves the "Hacker Cat" rank in my discord server 😸
Download "Ultimate Calculator 3000" to get started ➡ discord.cryptocat.me
There's no prizes, but the first 3 solves will earn themselves the "Hacker Cat" rank in my discord server 😸
Download "Ultimate Calculator 3000" to get started ➡ discord.cryptocat.me
One week until @bsidesbelfast.bsky.social, Who's going? 👀
As always, I've got stickers - come say hi! 👋
As always, I've got stickers - come say hi! 👋
September 4, 2025 at 2:46 PM
One week until @bsidesbelfast.bsky.social, Who's going? 👀
As always, I've got stickers - come say hi! 👋
As always, I've got stickers - come say hi! 👋
Video walkthrough for the "Fancy Login Form" web challenge from the @why2025.bsky.social CTF 🚩
Learn how to exfiltrate data via CSS injection ➡️ youtu.be/jUjlj2z5jJk
Learn how to exfiltrate data via CSS injection ➡️ youtu.be/jUjlj2z5jJk
August 14, 2025 at 6:57 PM
Video walkthrough for the "Fancy Login Form" web challenge from the @why2025.bsky.social CTF 🚩
Learn how to exfiltrate data via CSS injection ➡️ youtu.be/jUjlj2z5jJk
Learn how to exfiltrate data via CSS injection ➡️ youtu.be/jUjlj2z5jJk
Famous beef noodle soup (broth simmering continously for over 50 years!) in one of my all time favourite cities - Bangkok! 🇹🇭 Any hackers here wanna hang out, hmu 🤙
July 1, 2025 at 7:48 AM
Famous beef noodle soup (broth simmering continously for over 50 years!) in one of my all time favourite cities - Bangkok! 🇹🇭 Any hackers here wanna hang out, hmu 🤙
I've done a lot of awesome hacker meetups but this one was next level! So nice to meet brutecat, dreyand and IDlSSEVERYTHING🔥 These guys have some crazy skills (and stories), hope to meet again in the future 💜
June 28, 2025 at 9:34 AM
I've done a lot of awesome hacker meetups but this one was next level! So nice to meet brutecat, dreyand and IDlSSEVERYTHING🔥 These guys have some crazy skills (and stories), hope to meet again in the future 💜
I'll be in Singapore this weekend! I know there's lots of cool hackers there so hmu if you wanna get some coffee/food/drinks 🥰
June 26, 2025 at 8:07 AM
I'll be in Singapore this weekend! I know there's lots of cool hackers there so hmu if you wanna get some coffee/food/drinks 🥰
Finally back in #KualaLumpur 🙏 Meeting some of my favourite Malaysian hackers for food/drinks tomorrow night. If you wanna join, let me know! 🥰
June 12, 2025 at 3:56 PM
Finally back in #KualaLumpur 🙏 Meeting some of my favourite Malaysian hackers for food/drinks tomorrow night. If you wanna join, let me know! 🥰
Heading back to SE-Asia next month.. Any hackers wanna hang out? 👀
Join my discord to keep up with the travel plans / arrange meetups: cryptocat.me/discord 😇
#cybersecurity #ethicalhacking #infosec #bugbounty #ctf #asia
Join my discord to keep up with the travel plans / arrange meetups: cryptocat.me/discord 😇
#cybersecurity #ethicalhacking #infosec #bugbounty #ctf #asia
May 15, 2025 at 10:34 AM
Heading back to SE-Asia next month.. Any hackers wanna hang out? 👀
Join my discord to keep up with the travel plans / arrange meetups: cryptocat.me/discord 😇
#cybersecurity #ethicalhacking #infosec #bugbounty #ctf #asia
Join my discord to keep up with the travel plans / arrange meetups: cryptocat.me/discord 😇
#cybersecurity #ethicalhacking #infosec #bugbounty #ctf #asia
Have YOU joined my discord server yet? Click the link below and let's talk about hacking stuff 💜
discord.cryptocat.me
discord.cryptocat.me
May 1, 2025 at 8:46 AM
Have YOU joined my discord server yet? Click the link below and let's talk about hacking stuff 💜
discord.cryptocat.me
discord.cryptocat.me
Made writeups for the web challs featured in the CTF@CIT competition this weekend 🚩
1) SQL injection
2) Git repo dumping
3) Local file read with basic filter bypass
4) Flask session cookie tampering + SSTI
5) Credential reuse / HTTP method tampering
book.cryptocat.me/ctf-writeups...
1) SQL injection
2) Git repo dumping
3) Local file read with basic filter bypass
4) Flask session cookie tampering + SSTI
5) Credential reuse / HTTP method tampering
book.cryptocat.me/ctf-writeups...
April 28, 2025 at 10:58 AM
Made writeups for the web challs featured in the CTF@CIT competition this weekend 🚩
1) SQL injection
2) Git repo dumping
3) Local file read with basic filter bypass
4) Flask session cookie tampering + SSTI
5) Credential reuse / HTTP method tampering
book.cryptocat.me/ctf-writeups...
1) SQL injection
2) Git repo dumping
3) Local file read with basic filter bypass
4) Flask session cookie tampering + SSTI
5) Credential reuse / HTTP method tampering
book.cryptocat.me/ctf-writeups...
My YouTube channel has reached a new milestone; 3 million views! 🥳🎉
Next up - 50k subscribers! Help me get there 🥺
yt.cryptocat.me
Next up - 50k subscribers! Help me get there 🥺
yt.cryptocat.me
April 7, 2025 at 2:42 PM
My YouTube channel has reached a new milestone; 3 million views! 🥳🎉
Next up - 50k subscribers! Help me get there 🥺
yt.cryptocat.me
Next up - 50k subscribers! Help me get there 🥺
yt.cryptocat.me
Almost 600 hackers at ZeroDays CTF in #Dublin this year!! 💜
#ZeroDays #CTF #CaptureTheFlag #CyberSecurity #EthicalHacking #InfoSec #BugBounty #Ireland
#ZeroDays #CTF #CaptureTheFlag #CyberSecurity #EthicalHacking #InfoSec #BugBounty #Ireland
March 22, 2025 at 3:37 PM
Almost 600 hackers at ZeroDays CTF in #Dublin this year!! 💜
#ZeroDays #CTF #CaptureTheFlag #CyberSecurity #EthicalHacking #InfoSec #BugBounty #Ireland
#ZeroDays #CTF #CaptureTheFlag #CyberSecurity #EthicalHacking #InfoSec #BugBounty #Ireland
Met so many cool hackers over the past few days in Kuala Lumpur! 💜
March 16, 2025 at 3:14 PM
Met so many cool hackers over the past few days in Kuala Lumpur! 💜
Yay, another hacker hangout! So nice to finally meet @taeluralexis.bsky.social 💜
March 7, 2025 at 10:20 AM
Yay, another hacker hangout! So nice to finally meet @taeluralexis.bsky.social 💜
Another hacker has joined the crew 😎
March 3, 2025 at 9:22 AM
Another hacker has joined the crew 😎
Bug hunter and taxi driver! 😂
March 3, 2025 at 7:05 AM
Bug hunter and taxi driver! 😂
Met one of my favourite @intigriti.com hackers today! ngyostuan 💜
March 2, 2025 at 9:48 AM
Met one of my favourite @intigriti.com hackers today! ngyostuan 💜