stack overflow

Exploit writing tutorial part 6 : Bypassing Stack Cookies, SafeSeh, SEHOP, HW DEP and ASLR

Published September 21, 2009 |

Introduction In all previous tutorials in this Exploit writing tutorial series, we have looked at building exploits that would work on Windows XP / 2003 server. The success of all of these exploits (whether they are based on direct ret overwrite or exception handler structure overwrites) are based on the fact that a reliable return […]

Posted in 001_Security, Exploit Writing Tutorials, Exploits | Tagged !aslrdynamicbase, 2003, 4141414, 8, access violation, add esp, address space layout randomization, adjust ebp, adjust esi, alwaysoff, alwayson, aslr, before function returns, buffer, buffer overflow, bypass, call, compiler, cookie, data execution prevention, dep, dword ptr, exception handler, exploit, gs, hack, handler, immdbg, immunity, jmp, jump, Kifastsystemcallret, ldrpchecknxcompatibility, linker, loaded module, mov al, moveimages, next seh, non exec, nseh, ntsetinformationprocess, nx, ollydbg, optin, optout, partial overwrite, plugin, prevention, processexecute, protection, protectvirtualmemory, pvefindaddr, pycommand, python, ret2libc, safeseh, saved ebp, saved eip, se handler, se structure, sehop, stack, stack overflow, switch, virtual function call, vista, windbg, windows 7, xd, xp

Exploit writing tutorial part 3 : SEH Based Exploits

Published July 25, 2009 |

By Peter Van Eeckhoutte (corelanc0d3r)

In the first 2 parts of the exploit writing tutorial series, I have discussed how a classic stack buffer overflow works and how you can build a reliable exploit by using various techniques to jump to the shellcode. The example we have used allowed us to directly overwrite EIP and we had a pretty large […]

Posted in 001_Security, Exploit Writing Tutorials, Exploits | Tagged !exploitable, buffer, buffer overflow, cygwin, dep, dll modload, exception, exception handler, exploit, exploit laboratory, fs:[0], handler, memdump, msec.dll, msfpescan, next seh, ollydbg, pop pop ret, safeseh, seh, shellcode, stack, stack overflow, teb, tib, windbg

Exploit writing tutorial part 1 : Stack Based Overflows

Published July 19, 2009 |

By Peter Van Eeckhoutte (corelanc0d3r)

Last friday (july 17th 2009), somebody (nick)named ‘Crazy_Hacker’ has reported a vulnerability in Easy RM to MP3 Conversion Utility (on XP SP2 En), via packetstormsecurity.org. (see http://packetstormsecurity.org/0907-exploits/). The vulnerability report included a proof of concept exploit (which, by the way, failed to work on my MS Virtual PC based XP SP3 En). Another exploit was […]

Posted in 001_Security, Exploit Writing Tutorials, Exploits | Tagged 41414141, buffer, buffer overflow, buffersize, bytes, discover, ebp, eip, esp, exploit, exploit laboratory, exploit writing tutorial, hack, learn, metasploit, nop, nop sled, nop slide, overflow, pattern_create, pattern_offset, pop, push, register, saumil shah, shellcode, sk chong, stack, stack overflow, write

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Exploit writing tutorial part 3 : SEH Based Exploits

Exploit writing tutorial part 1 : Stack Based Overflows

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