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发表于 2006-9-21 13:05:06
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这个也太弱了,最好叫他们把汇编代码贴出来看看
[php]
ailantian@vax:~/mypg$ objdump -d a >a.txt
ailantian@vax:~/mypg$ vi a.txt
ailantian@vax:~/mypg$ cat a.txt
a: file format elf32-i386
Disassembly of section .init:
08048234 <_init>:
8048234: 55 push %ebp
8048235: 89 e5 mov %esp,%ebp
8048237: 83 ec 08 sub $0x8,%esp
804823a: e8 65 00 00 00 call 80482a4 <call_gmon_start>
804823f: e8 cc 00 00 00 call 8048310 <frame_dummy>
8048244: e8 77 02 00 00 call 80484c0 <__do_global_ctors_aux>
8048249: c9 leave
804824a: c3 ret
Disassembly of section .plt:
0804824c <__libc_start_main@plt-0x10>:
804824c: ff 35 fc 95 04 08 pushl 0x80495fc
8048252: ff 25 00 96 04 08 jmp *0x8049600
8048258: 00 00 add %al,(%eax)
...
0804825c <__libc_start_main@plt>:
804825c: ff 25 04 96 04 08 jmp *0x8049604
8048262: 68 00 00 00 00 push $0x0
8048267: e9 e0 ff ff ff jmp 804824c <_init+0x18>
0804826c <__gmon_start__@plt>:
804826c: ff 25 08 96 04 08 jmp *0x8049608
8048272: 68 08 00 00 00 push $0x8
8048277: e9 d0 ff ff ff jmp 804824c <_init+0x18>
Disassembly of section .text:
08048280 <_start>:
8048280: 31 ed xor %ebp,%ebp
8048282: 5e pop %esi
8048283: 89 e1 mov %esp,%ecx
8048285: 83 e4 f0 and $0xfffffff0,%esp
8048288: 50 push %eax
8048289: 54 push %esp
804828a: 52 push %edx
804828b: 68 10 84 04 08 push $0x8048410
8048290: 68 60 84 04 08 push $0x8048460
8048295: 51 push %ecx
8048296: 56 push %esi
8048297: 68 44 83 04 08 push $0x8048344
804829c: e8 bb ff ff ff call 804825c <__libc_start_main@plt>
80482a1: f4 hlt
80482a2: 90 nop
80482a3: 90 nop
080482a4 <call_gmon_start>:
80482a4: 55 push %ebp
80482a5: 89 e5 mov %esp,%ebp
80482a7: 53 push %ebx
80482a8: 83 ec 04 sub $0x4,%esp
80482ab: e8 00 00 00 00 call 80482b0 <call_gmon_start+0xc>
80482b0: 5b pop %ebx
80482b1: 81 c3 48 13 00 00 add $0x1348,%ebx
80482b7: 8b 93 fc ff ff ff mov 0xfffffffc(%ebx),%edx
80482bd: 85 d2 test %edx,%edx
80482bf: 74 05 je 80482c6 <call_gmon_start+0x22>
80482c1: e8 a6 ff ff ff call 804826c <__gmon_start__@plt>
80482c6: 58 pop %eax
80482c7: 5b pop %ebx
80482c8: c9 leave
80482c9: c3 ret
80482ca: 90 nop
80482cb: 90 nop
80482cc: 90 nop
80482cd: 90 nop
80482ce: 90 nop
80482cf: 90 nop
080482d0 <__do_global_dtors_aux>:
80482d0: 55 push %ebp
80482d1: 89 e5 mov %esp,%ebp
80482d3: 83 ec 08 sub $0x8,%esp
80482d6: 80 3d 18 96 04 08 00 cmpb $0x0,0x8049618
80482dd: 75 2d jne 804830c <__do_global_dtors_aux+0x3c>
80482df: a1 14 96 04 08 mov 0x8049614,%eax
80482e4: 8b 10 mov (%eax),%edx
80482e6: 85 d2 test %edx,%edx
80482e8: 74 1b je 8048305 <__do_global_dtors_aux+0x35>
80482ea: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
80482f0: 83 c0 04 add $0x4,%eax
80482f3: a3 14 96 04 08 mov %eax,0x8049614
80482f8: ff d2 call *%edx
80482fa: a1 14 96 04 08 mov 0x8049614,%eax
80482ff: 8b 10 mov (%eax),%edx
8048301: 85 d2 test %edx,%edx
8048303: 75 eb jne 80482f0 <__do_global_dtors_aux+0x20>
8048305: c6 05 18 96 04 08 01 movb $0x1,0x8049618
804830c: c9 leave
804830d: c3 ret
804830e: 89 f6 mov %esi,%esi
08048310 <frame_dummy>:
8048310: 55 push %ebp
8048311: 89 e5 mov %esp,%ebp
8048313: 83 ec 08 sub $0x8,%esp
8048316: a1 28 95 04 08 mov 0x8049528,%eax
804831b: 85 c0 test %eax,%eax
804831d: 74 21 je 8048340 <frame_dummy+0x30>
804831f: b8 00 00 00 00 mov $0x0,%eax
8048324: 85 c0 test %eax,%eax
8048326: 74 18 je 8048340 <frame_dummy+0x30>
8048328: c7 04 24 28 95 04 08 movl $0x8049528,(%esp)
804832f: e8 cc 7c fb f7 call 0 <_init-0x8048234>
8048334: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
804833a: 8d bf 00 00 00 00 lea 0x0(%edi),%edi
8048340: 89 ec mov %ebp,%esp
8048342: 5d pop %ebp
8048343: c3 ret
08048344 <main>:
8048344: 55 push %ebp
8048345: 89 e5 mov %esp,%ebp
8048347: 53 push %ebx
8048348: 83 ec 34 sub $0x34,%esp
804834b: 83 e4 f0 and $0xfffffff0,%esp
804834e: b8 00 00 00 00 mov $0x0,%eax
8048353: 29 c4 sub %eax,%esp
8048355: c7 45 e0 00 00 00 00 movl $0x0,0xffffffe0(%ebp)
804835c: c7 45 e4 00 00 00 00 movl $0x0,0xffffffe4(%ebp)
8048363: 83 7d e4 00 cmpl $0x0,0xffffffe4(%ebp)
8048367: 78 18 js 8048381 <main+0x3d>
8048369: 83 7d e4 00 cmpl $0x0,0xffffffe4(%ebp)
804836d: 0f 8f 91 00 00 00 jg 8048404 <main+0xc0>
8048373: 81 7d e0 3f 42 0f 00 cmpl $0xf423f,0xffffffe0(%ebp)
804837a: 76 05 jbe 8048381 <main+0x3d>
804837c: e9 83 00 00 00 jmp 8048404 <main+0xc0>
8048381: c7 45 f0 01 00 00 00 movl $0x1,0xfffffff0(%ebp)
8048388: c7 45 f4 00 00 00 00 movl $0x0,0xfffffff4(%ebp)
804838f: c7 45 e8 01 00 00 00 movl $0x1,0xffffffe8(%ebp)
8048396: c7 45 ec 00 00 00 00 movl $0x0,0xffffffec(%ebp)
804839d: 83 7d ec 00 cmpl $0x0,0xffffffec(%ebp)
80483a1: 78 0e js 80483b1 <main+0x6d>
80483a3: 83 7d ec 00 cmpl $0x0,0xffffffec(%ebp)
80483a7: 7f 4c jg 80483f5 <main+0xb1>
80483a9: 83 7d e8 1d cmpl $0x1d,0xffffffe8(%ebp)
80483ad: 76 02 jbe 80483b1 <main+0x6d>
80483af: eb 44 jmp 80483f5 <main+0xb1>
80483b1: 8b 45 e8 mov 0xffffffe8(%ebp),%eax
80483b4: 89 45 d4 mov %eax,0xffffffd4(%ebp)
80483b7: 8b 45 d4 mov 0xffffffd4(%ebp),%eax
80483ba: f7 65 f0 mull 0xfffffff0(%ebp)
80483bd: 89 45 d8 mov %eax,0xffffffd8(%ebp)
80483c0: 89 55 dc mov %edx,0xffffffdc(%ebp)
80483c3: 8b 45 f0 mov 0xfffffff0(%ebp),%eax
80483c6: 89 c3 mov %eax,%ebx
80483c8: 0f af 5d ec imul 0xffffffec(%ebp),%ebx
80483cc: 8b 45 dc mov 0xffffffdc(%ebp),%eax
80483cf: 01 d8 add %ebx,%eax
80483d1: 8b 5d e8 mov 0xffffffe8(%ebp),%ebx
80483d4: 0f af 5d f4 imul 0xfffffff4(%ebp),%ebx
80483d8: 01 d8 add %ebx,%eax
80483da: 89 45 dc mov %eax,0xffffffdc(%ebp)
80483dd: 8b 45 d8 mov 0xffffffd8(%ebp),%eax
80483e0: 8b 55 dc mov 0xffffffdc(%ebp),%edx
80483e3: 89 45 f0 mov %eax,0xfffffff0(%ebp)
80483e6: 89 55 f4 mov %edx,0xfffffff4(%ebp)
80483e9: 8d 45 e8 lea 0xffffffe8(%ebp),%eax
80483ec: 83 00 01 addl $0x1,(%eax)
80483ef: 83 50 04 00 adcl $0x0,0x4(%eax)
80483f3: eb a8 jmp 804839d <main+0x59>
80483f5: 8d 45 e0 lea 0xffffffe0(%ebp),%eax
80483f8: 83 00 01 addl $0x1,(%eax)
80483fb: 83 50 04 00 adcl $0x0,0x4(%eax)
80483ff: e9 5f ff ff ff jmp 8048363 <main+0x1f>
8048404: b8 00 00 00 00 mov $0x0,%eax
8048409: 8b 5d fc mov 0xfffffffc(%ebp),%ebx
804840c: c9 leave
804840d: c3 ret
804840e: 90 nop
804840f: 90 nop
08048410 <__libc_csu_fini>:
8048410: 55 push %ebp
8048411: 89 e5 mov %esp,%ebp
8048413: 57 push %edi
8048414: 56 push %esi
8048415: 53 push %ebx
8048416: e8 98 00 00 00 call 80484b3 <__i686.get_pc_thunk.bx>
804841b: 81 c3 dd 11 00 00 add $0x11dd,%ebx
8048421: 83 ec 0c sub $0xc,%esp
8048424: 8d 83 20 ff ff ff lea 0xffffff20(%ebx),%eax
804842a: 8d bb 20 ff ff ff lea 0xffffff20(%ebx),%edi
8048430: 29 f8 sub %edi,%eax
8048432: c1 f8 02 sar $0x2,%eax
8048435: 8d 70 ff lea 0xffffffff(%eax),%esi
8048438: 83 fe ff cmp $0xffffffff,%esi
804843b: 74 0c je 8048449 <__libc_csu_fini+0x39>
804843d: 8d 76 00 lea 0x0(%esi),%esi
8048440: ff 14 b7 call *(%edi,%esi,4)
8048443: 4e dec %esi
8048444: 83 fe ff cmp $0xffffffff,%esi
8048447: 75 f7 jne 8048440 <__libc_csu_fini+0x30>
8048449: 8d b4 26 00 00 00 00 lea 0x0(%esi),%esi
8048450: e8 9b 00 00 00 call 80484f0 <_fini>
8048455: 83 c4 0c add $0xc,%esp
8048458: 5b pop %ebx
8048459: 5e pop %esi
804845a: 5f pop %edi
804845b: 5d pop %ebp
804845c: c3 ret
804845d: 8d 76 00 lea 0x0(%esi),%esi
08048460 <__libc_csu_init>:
8048460: 55 push %ebp
8048461: 89 e5 mov %esp,%ebp
8048463: 57 push %edi
8048464: 56 push %esi
8048465: 53 push %ebx
8048466: e8 48 00 00 00 call 80484b3 <__i686.get_pc_thunk.bx>
804846b: 81 c3 8d 11 00 00 add $0x118d,%ebx
8048471: 83 ec 0c sub $0xc,%esp
8048474: e8 bb fd ff ff call 8048234 <_init>
8048479: 8d 83 20 ff ff ff lea 0xffffff20(%ebx),%eax
804847f: 8d 93 20 ff ff ff lea 0xffffff20(%ebx),%edx
8048485: 29 d0 sub %edx,%eax
8048487: c1 f8 02 sar $0x2,%eax
804848a: 89 45 f0 mov %eax,0xfffffff0(%ebp)
804848d: 74 1c je 80484ab <__libc_csu_init+0x4b>
804848f: 31 ff xor %edi,%edi
8048491: 89 d6 mov %edx,%esi
8048493: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
8048499: 8d bc 27 00 00 00 00 lea 0x0(%edi),%edi
80484a0: 47 inc %edi
80484a1: ff 16 call *(%esi)
80484a3: 83 c6 04 add $0x4,%esi
80484a6: 39 7d f0 cmp %edi,0xfffffff0(%ebp)
80484a9: 75 f5 jne 80484a0 <__libc_csu_init+0x40>
80484ab: 83 c4 0c add $0xc,%esp
80484ae: 5b pop %ebx
80484af: 5e pop %esi
80484b0: 5f pop %edi
80484b1: 5d pop %ebp
80484b2: c3 ret
080484b3 <__i686.get_pc_thunk.bx>:
80484b3: 8b 1c 24 mov (%esp),%ebx
80484b6: c3 ret
80484b7: 90 nop
80484b8: 90 nop
80484b9: 90 nop
80484ba: 90 nop
80484bb: 90 nop
80484bc: 90 nop
80484bd: 90 nop
80484be: 90 nop
80484bf: 90 nop
080484c0 <__do_global_ctors_aux>:
80484c0: 55 push %ebp
80484c1: 89 e5 mov %esp,%ebp
80484c3: 53 push %ebx
80484c4: 83 ec 04 sub $0x4,%esp
80484c7: bb 18 95 04 08 mov $0x8049518,%ebx
80484cc: a1 18 95 04 08 mov 0x8049518,%eax
80484d1: 83 f8 ff cmp $0xffffffff,%eax
80484d4: 74 16 je 80484ec <__do_global_ctors_aux+0x2c>
80484d6: 8d 76 00 lea 0x0(%esi),%esi
80484d9: 8d bc 27 00 00 00 00 lea 0x0(%edi),%edi
80484e0: 83 eb 04 sub $0x4,%ebx
80484e3: ff d0 call *%eax
80484e5: 8b 03 mov (%ebx),%eax
80484e7: 83 f8 ff cmp $0xffffffff,%eax
80484ea: 75 f4 jne 80484e0 <__do_global_ctors_aux+0x20>
80484ec: 58 pop %eax
80484ed: 5b pop %ebx
80484ee: 5d pop %ebp
80484ef: c3 ret
Disassembly of section .fini:
080484f0 <_fini>:
80484f0: 55 push %ebp
80484f1: 89 e5 mov %esp,%ebp
80484f3: 53 push %ebx
80484f4: 83 ec 04 sub $0x4,%esp
80484f7: e8 00 00 00 00 call 80484fc <_fini+0xc>
80484fc: 5b pop %ebx
80484fd: 81 c3 fc 10 00 00 add $0x10fc,%ebx
8048503: e8 c8 fd ff ff call 80482d0 <__do_global_dtors_aux>
8048508: 59 pop %ecx
8048509: 5b pop %ebx
804850a: c9 leave
804850b: c3 ret
ailantian@vax:~/mypg$
[/php] |
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