Download A Bug Hunter's Diary: A Guided Tour Through the Wilds of by Tobias Klein PDF

By Tobias Klein

Probably easy insects could have drastic effects, permitting attackers to compromise platforms, improve neighborhood privileges, and differently wreak havoc on a system.A malicious program Hunter's Diary follows safety professional Tobias Klein as he tracks down and exploits insects in the various world's most well-liked software program, like Apple's iOS, the VLC media participant, net browsers, or even the Mac OS X kernel. during this extraordinary account, you'll see how the builders chargeable for those flaws patched the bugs—or did not reply in any respect. As you stick with Klein on his trip, you'll achieve deep technical wisdom and perception into how hackers technique tough difficulties and event the real joys (and frustrations) of malicious program hunting.

Along the best way you'll learn the way to:
• Use field-tested ideas to discover insects, like selecting and tracing consumer enter info and opposite engineering
• make the most vulnerabilities like NULL pointer dereferences, buffer overflows, and kind conversion flaws
• improve facts of suggestion code that verifies the safety flaw
• file insects to proprietors or 3rd get together brokers

A computer virus Hunter's Diary is filled with real-world examples of weak code and the customized courses used to discover and try insects. no matter if you're looking insects for enjoyable, for revenue, or to make the realm a more secure position, you'll study useful new abilities by way of having a look over the shoulder of a pro computer virus hunter in action.

"This is among the best infosec books to come back out within the final a number of years."
Dino Dai Zovi, details safeguard Professional

"Give a guy an take advantage of and also you make him a hacker for an afternoon; train a guy to take advantage of insects and also you make him a hacker for a lifetime."
Felix 'FX' Lindner

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Extra info for A Bug Hunter's Diary: A Guided Tour Through the Wilds of Software Security

Sample text

In this mode of operation, DEP is enabled only for processes that explicitly opt in to DEP. Because I used a default installation of Windows Vista 32-bit, the system-wide DEP policy should be set to OptIn. exe console application from an elevated command prompt: C:\Windows\system32>bcdedit /enum | findstr nx nx OptIn The output of the command shows that the system was indeed configured to use the OptIn operation mode of DEP, which explains why VLC doesn’t use this mitigation technique: The process simply doesn’t opt in to DEP.

Take control over EIP/RIP. The system crash is caused by the NULL pointer dereference. 2). All I had to do to prevent the system from crashing was to map the zero page before triggering the NULL pointer dereference. This can be done easily on the x86 and AMD64 architecture, because Solaris segregates the virtual address space of processes on these platforms into two parts: user space and kernel space (see Figure 3-5). 9 Note Each user-mode address space is unique to a particular process, while the kernel address space is shared across all processes.

De/books/bhd/. 6. net/ publications/security-ecosystem/. 7. org/. git;a=commitdiff;h=26d92b87bba99b5ea2e17b7eaa39c462d65e9133. 8. git;a=commitdiff;h=d859e6b9537af2d7326276f70de2 5a840f554dc3. 9. com/en-en/ sysinternals/bb896653/. 10. aspx. 11. LookingGlass is a handy tool to scan a directory structure or the running processes to report which binaries do not make use of ASLR and NX. html. 12. linkid=9678113. 13. aspx. 14. com/. 15. aspx. 16. txt. 17. html. 24 Chapter 2 3 Escape from the WWW Zone Thursday, August 23, 2007 Dear Diary, I’ve always been a big fan of vulnerabilities in operating system kernels because they’re usually quite interesting, very powerful, and tricky to exploit.

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