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

By Tobias Klein

Doubtless basic insects could have drastic results, permitting attackers to compromise structures, expand neighborhood privileges, and differently wreak havoc on a system.A computer virus Hunter's Diary follows defense professional Tobias Klein as he tracks down and exploits insects in the various world's hottest software program, like Apple's iOS, the VLC media participant, net browsers, or even the Mac OS X kernel. during this unique account, you'll see how the builders accountable for those flaws patched the bugs—or did not reply in any respect. As you persist with Klein on his trip, you'll achieve deep technical wisdom and perception into how hackers strategy tricky difficulties and event the genuine joys (and frustrations) of malicious program hunting.

Along the best way you'll find out how to:
• Use field-tested recommendations to discover insects, like picking out and tracing consumer enter info and opposite engineering
• make the most vulnerabilities like NULL pointer dereferences, buffer overflows, and sort conversion flaws
• strengthen evidence of inspiration code that verifies the safety flaw
• file insects to proprietors or 3rd occasion brokers

A computer virus Hunter's Diary is choked with real-world examples of weak code and the customized courses used to discover and try out insects. even if you're searching insects for enjoyable, for revenue, or to make the area a more secure position, you'll research priceless new abilities through having a look over the shoulder of a pro computer virus hunter in action.

"This is without doubt one of the finest infosec books to come back out within the final a number of years."
Dino Dai Zovi, details safeguard Professional

"Give a guy an make the most 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

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This might mean that I could easily gain control of the instruction pointer. Step 4: Manipulate the TiVo Movie File to Gain Control of EIP My next step was to determine which bytes of the sample file actually overwrote the return address of the current stack frame so that I could take control of EIP. The debugger stated that EIP had a value of 0x20030000 at the time of the crash. To determine which offset this value is found at, I could try to calculate the exact file offset, or I could simply search the file for the byte pattern.

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. I recently combed through several operating system kernels in search of bugs. One of the kernels that I searched through was the kernel of Sun Solaris. And guess what? I was successful. ☺ 10, 27, 20 nuary a racle J O n y b ←O uired q c a s a ow Sun w racle n ion.

C ip_extract_tunreq() ipif = ipif_lookup_on_name(ta->ifta_lifr_name, mi_strlen(ta->ifta_lifr_name), B_FALSE, &exists, isv6, connp->conn_zoneid, CONNP_TO_WQ(connp), mp, func, &error, ipst); if (ipif == NULL) return (error); Back in ip_extract_tunreq(), the error condition is returned to its caller function ip_process_ioctl() (see line 8196). c ip_process_ioctl() case TUN_CMD: /* * SIOC[GS]TUNPARAM appear here. ci_lifr); Then in ip_process_ioctl(), the error condition is still set to 0. Thus, the if statement in line 26741 returns FALSE, and the kernel continues the execution of the rest of the function leading to the NULL pointer dereference in ip_sioctl_tunparam().

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