From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sonic314-15.consmr.mail.bf2.yahoo.com (sonic314-15.consmr.mail.bf2.yahoo.com [74.6.132.125]) by sourceware.org (Postfix) with ESMTPS id 714953858002 for ; Thu, 15 Apr 2021 08:24:17 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 714953858002 X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1618475056; bh=S5UQ07J769JVEHN2xgpYYgih1u7DXudvK6u1gp17saa=; h=X-Sonic-MF:Date:From:To:Subject:From:Subject; b=Rx4I/Jhz7pQdO/fUul8NxCjJqahZK9cUpbVS9VzRaFkH52HqED8QFUWcFCPiSTElXcee+f4kl4f0n0dcuNXxY7bdhERlHzJun7Gu41k0MHPHcXaqQgB2kM4fUj7Cw8DElGNu/lwcB54uNgknMTtehhEG4tNra0jhqy+bnBQmlOJf5SIC6DpRVRFYh6AFUTwCGDv7RSfRjmJdlyGwlLOIR2nX52J542/yQCEnqHDiedtUQ9LiuRu1DC95gBw9V2KyKfWAHepAg9vXtTyvE6kf2eb1mE0fqc9uT2xord3S2fPcmcUyKloXBC/3lmXITQ1qsrEGtYSa8hlKW3mQeWLuSA== X-YMail-OSG: leUzywsVM1mnRzpz9FuUC4GtkKItztkcvZgCjfh5yLXdIa3SvMcOLNHAbtPfz4H 4ed.QybForPNz.v9MQkKu2a6dv5OKZ1IpLBZZ5H37IGVeAbjluqaktwZkI61lI79N3QKeAY9r8y0 hdZ_W8KnxdlRscDcSLIj9pKp10FXZTaIvzM2sEIAOArNDGhU4xJWsz_Fz5tV6PKPQ7gid_20A2bW m_tPgslIETwmCm.It7ZrCr.DJrhjcuiXjCTR6DPPceQ02wUcmA_lUwrYicyRRiTHst94BTVd.Jes HX5NBjjvtamfkm0aCm57eR7AF6Kc_NMRzzhW0drEht5fzQ9n9KHXLLIgx1LpIcIsCK.DFqduIo2M Bp4hEIuu7WaqeHlBYndG68gYx8eCAhI.03TZI0Hgy6Z3ybKuTH8Fx2x.0X6rmNYXPkFIf2oZwGtK nq3aQO_vqa7aJqPi0vMyBUNUuBPi_FgJqq.cyKQi1KiNi.v96fmnxb055g46E6C2rkQLdpdQdT3s yjWKlI2hD31H4EAxTGMrJZD3FEgW30mI1GjtbhIRhpgz57dZnbPDPaObAREpo642uzic08ocp1Dr HfKp85DOI5PL5h93gfgkSSHVTa5XVsCReXCRKmU4AeJeYD3MQBGDV5RJK61FEm0UCn4Wijin0YJ4 E1QC0c62HBgPBsrSdgx0DwJURK04fU30wwBE.wa9XuprnCNktNGNPgiCiJ.CD5XEUP0eqOHq8c2r sCo2i_uu1x5dZ.ZNyrHUZi0oP_S1j9Dsb_FeUVcKEuo17Ua.qFLFQm7ZL_oWWmDeyqyJErpPxqZC hzeXYJucA58Q6AKg5bCMt0X4oYr3QPYdHIRfIpN76DVE7pzXHc0L2GVO3EZZqW63YNMtQaCqx_HS 4Bw_1kdIaeFQXlFA9isFRsqxXEXBVJ_C9Dzc9q5cyjYS34VbtBfVNLTp.wh3.p9B19JBITTkA5BL xmrtl_VxCiXVp_KQZ6vftmY14D9uTCEi_IlCu6vWUuWaoD9IcTR1Rpl_OGaMaPz_UyFGBvFcF9pN Vva8BE2k21SDxTZNd8SGk829YqHFq.iFmvSLl375sXH7c6w8ma_8kg0l2v8ECzdGfZ4ZPZyGGNHv e5KwykmLORdtMnbSNOZMfUxRp_y7McyxUM4PHSqsXv4PjnDrZahbF8u3yfu.gEGyf7N9O3qVtJw2 _ycUuBDjcQ81HItyHqqsxnMcqro.V93OQv0199IIgQvba8P40_npcVQNlr2vPQ.h6uMk24kQ.aV4 DNegNjOtnPBM8WKC8_BGJDbgvZCcxMuyZgSX6Nad5NGlkqnBIfJ5UFcQ0.atWCKaqvjHct39jXtk 98vdrAernEe8nr8SzceN5jb.g00dld8g68vcMCkO.3ikvga61EDl7KnwemHMOSMduSaHvT.XXiIo zOtP0eWZoUZZ1kkgsCODgP_lg5oaOvYNLC0QeO6G8wATPzPa.BunJOzqPooEXrK6L5IVMzKiaMGF a2VUSuKOVwVtDR1.FBQ15JMX3MHIPLKJdSw4snbfYBlYGa9Ox1nFMcMVBOTs94YXZ23kg1FwcZok pfuAua1GdUEt0TGGoMLqjD88RhgAMoPrbI9oNPUVyIWgx1.eNjtZAcEHju2.9peEsXyEMYGOEG.v tMqQe0CJrDP1fF3OUKt444kpTdInSsp89ReYWG2iBhFLuEFQFtxSRB_8VDj6gIje9_bzcHwD2ZSi nRpiGyWG8Qp0UHzeTDbSXFba7YCRoUpgciedRHPgvDFeNa9eJxVJBd8C3Yv6tcpf1lATfb1hnT1a eeLWikRmc4DBwWZ7NP4WzSOE0J8seLnslPAf9ehKahjZxBY2jPfCy30d66tuMas.U2tMcCh1zcIe Ro0csm.UCuvhZCeLMbZYTEZmtMAGv_xJ1I6hLhUbosAHA3fm1ljHRJFUsLCnNKKJZ8jZU1kV6qog sAuE4CUC1VjEQcMhitYs4nwiABXe0vchwQvIBQ.JjqGViPYeq2PHJDlhif4_AXYGItwWPgEzwzXp bh4v9S0o7JwcbrtBsOPpOSXSNnJvTx_SWuzKhIQTEBH7b4NDknJln2mInf7WAjAFbbFOt9wiY2cJ nZcxON3trxj.ushuEF9towVSzouaiifZzSOAFA_Vpw74XA09XFEFV.Fx7s_Xddh7L5QpTeKILR0q 1JasSGnO1_ZhIaDKyokrwmrirUi6fEZgn8raxQMh7wUsUt3xJ60JR6pbDea5HJVhxhtmzcT85SYg C69McTZQCg4oBT4tp64v.TjEBFnJbWwggLRHxp7McCDMOK4nhcmmHLV47is04QfU7ix_jQQF0Eig MqargmtX9CuPWhlX595csXRTD0mnonXVO2mRiTKIB39FvmS6HNBCa5tpwpeaH73Z0ywULRyvGOxS Hj2fOKDBl1QthNWLone6IGO0nD.l1tmr5dc1t3I7oLVnmrPM.4d85xOLw6l5KTXVCwjhf5WBMc4n LkHbCHlif3z.3bOxvOLBNV3XzDbvQpshdOnFEChRYv4t3dlbfgURhlCjr X-Sonic-MF: Received: from sonic.gate.mail.ne1.yahoo.com by sonic314.consmr.mail.bf2.yahoo.com with HTTP; Thu, 15 Apr 2021 08:24:16 +0000 Date: Thu, 15 Apr 2021 08:24:14 +0000 (UTC) From: Jason Long To: Paul Koning Cc: Eli Zaretskii via Gdb Message-ID: <1476048927.1326221.1618475054655@mail.yahoo.com> In-Reply-To: <40861674-D931-44C6-A4CE-50DC6516DEDF@comcast.net> References: <581661034.1177110.1618422536149.ref@mail.yahoo.com> <581661034.1177110.1618422536149@mail.yahoo.com> <6D6283C4-4860-48E3-B01F-B6C7687A300D@comcast.net> <380743744.1194751.1618425458396@mail.yahoo.com> <40861674-D931-44C6-A4CE-50DC6516DEDF@comcast.net> Subject: Re: Is GDB just for bug hunting? MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Mailer: WebService/1.1.18121 YMailNorrin Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36 X-Spam-Status: No, score=1.6 required=5.0 tests=BAYES_05, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Apr 2021 08:24:18 -0000 Thank you so much. Thus, anybody that find a=C2=A0vulnerability in a software is a Reverse Eng= ineer and not a Debugger. Am I right? I searched in the Youtube.com and realized=C2=A0that someone use GDB for Re= verse Engineering!!! Can you introduce me a book about GDB or debugging that is OK for a beginne= r? On Wednesday, April 14, 2021, 11:18:28 PM GMT+4:30, Paul Koning wrote:=20 > On Apr 14, 2021, at 2:37 PM, Jason Long wrote: >=20 > Thank you for your useful info. > If a program is close source, then code review canceled. Thus, how a secu= rity researcher finds a vulnerability in a program? Agreed, code review only applies if the source is visible.=C2=A0 More preci= sely, if the source is allowed to be disclosed; researchers looking at the = code while under NDA does not count and serves no significant purpose. In those case, you're left with test stimuli and reverse engineering.=C2=A0= For "never seen before" defects, you either need luck (an existing test ha= ppens to catch it) or a different kind of luck (you created a new test that= happens to catch it) or lots of skill (you saw the issue during a reverse = engineering session). GDB can help with reverse engineering.=C2=A0 It's probably not ideal for di= sassembly let alone decompiling, but it does offer disassembly and it also = gives you insight into the state of the running application and how it chan= ges during execution. =C2=A0=C2=A0=C2=A0 paul