gdb-test1.txt

ICS 课程的Lab2

swpig@linux:~> ls
Documents  public_html
swpig@linux:~> cd Documents
swpig@linux:~/Documents> ls
gcc  gdb  ICS  Pictures  Presentations  Texts  tools
swpig@linux:~/Documents> cd ICS
swpig@linux:~/Documents/ICS> ls
asm.txt~  bomb1191  bomb-d.txt  bomb-t.txt  bomb-t.txt~  handout_lab2.pdf
swpig@linux:~/Documents/ICS> objdump bomb1191 > bomb-d1.txt
Usage: objdump <option(s)> <file(s)>
 Display information from object <file(s)>.
 At least one of the following switches must be given:
  -a, --archive-headers    Display archive header information
  -f, --file-headers       Display the contents of the overall file header
  -p, --private-headers    Display object format specific file header contents
  -h, --[section-]headers  Display the contents of the section headers
  -x, --all-headers        Display the contents of all headers
  -d, --disassemble        Display assembler contents of executable sections
  -D, --disassemble-all    Display assembler contents of all sections
  -S, --source             Intermix source code with disassembly
  -s, --full-contents      Display the full contents of all sections requested
  -g, --debugging          Display debug information in object file
  -G, --stabs              Display (in raw form) any STABS info in the file
  -t, --syms               Display the contents of the symbol table(s)
  -T, --dynamic-syms       Display the contents of the dynamic symbol table
  -r, --reloc              Display the relocation entries in the file
  -R, --dynamic-reloc      Display the dynamic relocation entries in the file
  -v, --version            Display this program's version number
  -i, --info               List object formats and architectures supported
  -H, --help               Display this information
swpig@linux:~/Documents/ICS> objdump bomb1191 >> bomb-d1.txt
Usage: objdump <option(s)> <file(s)>
 Display information from object <file(s)>.
 At least one of the following switches must be given:
  -a, --archive-headers    Display archive header information
  -f, --file-headers       Display the contents of the overall file header
  -p, --private-headers    Display object format specific file header contents
  -h, --[section-]headers  Display the contents of the section headers
  -x, --all-headers        Display the contents of all headers
  -d, --disassemble        Display assembler contents of executable sections
  -D, --disassemble-all    Display assembler contents of all sections
  -S, --source             Intermix source code with disassembly
  -s, --full-contents      Display the full contents of all sections requested
  -g, --debugging          Display debug information in object file
  -G, --stabs              Display (in raw form) any STABS info in the file
  -t, --syms               Display the contents of the symbol table(s)
  -T, --dynamic-syms       Display the contents of the dynamic symbol table
  -r, --reloc              Display the relocation entries in the file
  -R, --dynamic-reloc      Display the dynamic relocation entries in the file
  -v, --version            Display this program's version number
  -i, --info               List object formats and architectures supported
  -H, --help               Display this information
swpig@linux:~/Documents/ICS> objdump -d bomb1191 >> bomb-d1.txt
swpig@linux:~/Documents/ICS> ls
asm.txt~  bomb-d1.txt  bomb-t.txt   handout_lab2.pdf
bomb1191  bomb-d.txt   bomb-t.txt~
swpig@linux:~/Documents/ICS> gdb bomb1191
GNU gdb 5.3
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i586-suse-linux"...
(gdb) break explode
Breakpoint 1 at 0x8048cb6
(gdb) break stage3
Breakpoint 2 at 0x80490fd
(gdb) break stage4
Breakpoint 3 at 0x8049225
(gdb) break stage5
Breakpoint 4 at 0x804929d
(gdb) break *0x8049105
Breakpoint 5 at 0x8049105
(gdb) break *0x8049127
Breakpoint 6 at 0x8049127
(gdb) run
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 37647
 
Breakpoint 2, 0x080490fd in stage3 ()
(gdb) s
Single stepping until exit from function stage3,
which has no line number information.
 
Breakpoint 5, 0x08049105 in stage3 ()
(gdb) x/d(%ecx)
A parse error in expression, near `%ecx)'.
(gdb) x/d($ebp+0xc)
0xbffff624:     37647
(gdb) x/d($ebp+0x8)
0xbffff620:     37647
(gdb) x/d($eax)
0x80490f4 <stage3>:     -2082109099
(gdb) x/d($ecx)
0x930f: Cannot access memory at address 0x930f
(gdb) x/d($ebx)
0x930f: Cannot access memory at address 0x930f
(gdb) x/d($edi)
0x0:    Cannot access memory at address 0x0
(gdb) x/d($esi)
0x2:    Cannot access memory at address 0x2
(gdb) x/d($ecx)
0x930f: Cannot access memory at address 0x930f
(gdb) x/d($ebx)
0x930f: Cannot access memory at address 0x930f
(gdb) print /x $ebx
$1 = 0x930f
(gdb) print x/d $ebx
No symbol "x" in current context.
(gdb) print /d $ebx
$2 = 37647
(gdb) /d $ecx
Undefined command: "".  Try "help".
(gdb) print /d $ecx
$3 = 37647
(gdb) s
Single stepping until exit from function stage3,
which has no line number information.
 
Breakpoint 6, 0x08049127 in stage3 ()
(gdb) print /d $edx
$4 = 0
(gdb) print /d $eax
$5 = 0
(gdb) print /d $ecx
$6 = 0
(gdb) print /d $esi
$7 = 0
(gdb) s
Single stepping until exit from function stage3,
which has no line number information.
0x08048880 in main ()
(gdb) s
Single stepping until exit from function main,
which has no line number information.
You successfully passed stage 3.
 
please enter password for stage 4:
Program received signal SIGINT, Interrupt.
0x400e0df4 in read () from /lib/i686/libc.so.6
(gdb) kill
Kill the program being debugged? (y or n) y
(gdb) clear
No source file specified.
(gdb) delete
Delete all breakpoints? (y or n) y
(gdb) break explode
Breakpoint 7 at 0x8048cb6
(gdb) break stage4
Breakpoint 8 at 0x8049225
(gdb) break *0x8049232
Breakpoint 9 at 0x8049232
(gdb) break *0x8049250
Breakpoint 10 at 0x8049250
(gdb) break *0x8049269
Breakpoint 11 at 0x8049269
(gdb) break *0x8049275
Breakpoint 12 at 0x8049275
(gdb) break *0x804927f
Breakpoint 13 at 0x804927f
(gdb) break stage5
Breakpoint 14 at 0x804929d
(gdb) break stage6
Breakpoint 15 at 0x804931e
(gdb) r
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 37647
You successfully passed stage 3.
 
please enter password for stage 4: 656636
 
Breakpoint 8, 0x08049225 in stage4 ()
(gdb) print /x $esi
$8 = 0x3
(gdb) print /d $esi
$9 = 3
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 9, 0x08049232 in stage4 ()
(gdb) print /d $esi
$10 = 656636
(gdb) print /d $ecx
$11 = 393251
(gdb)
$12 = 393251
(gdb) print /d $eax
$13 = -2004318071
(gdb) print /d $edx
$14 = -2004318071
(gdb) print /d $ecx
$15 = 393251
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 10, 0x08049250 in stage4 ()
(gdb) print /d $ecx
$16 = 393251
(gdb) print /d $eax
$17 = 2021161081
(gdb) print /d $edx
$18 = 26216
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 11, 0x08049269 in stage4 ()
(gdb) print /d $ebx
$19 = 18
(gdb) print /d $ecx
$20 = 393251
(gdb) print /d $eax
$21 = 393244
(gdb) print /d $edi
$22 = 23132
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 12, 0x08049275 in stage4 ()
(gdb) print /d $eax
$23 = 4
(gdb) print /d $ecx
$24 = 393251
(gdb) print /d $edx
$25 = 7
(gdb) print /d $ebx
$26 = 18
(gdb) print /d $edi
$27 = 4
(gdb) print /d $esi
$28 = 656636
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 13, 0x0804927f in stage4 ()
(gdb) print /d $eax
$29 = 2
(gdb) print /d $edi
$30 = 4
(gdb) kill
Kill the program being debugged? (y or n) y
(gdb) s
The program is not being run.
(gdb) run
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 82563
 
Breakpoint 7, 0x08048cb6 in explode ()
(gdb) kill
Kill the program being debugged? (y or n) y
(gdb) run
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 37647
You successfully passed stage 3.
 
please enter password for stage 4: 8275150
 
Breakpoint 8, 0x08049225 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 9, 0x08049232 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 10, 0x08049250 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 11, 0x08049269 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 12, 0x08049275 in stage4 ()
(gdb) print /d $eax
$31 = 4
(gdb) print /d $edi
$32 = 4
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 13, 0x0804927f in stage4 ()
(gdb) print /d $edi
$33 = 4
(gdb) print /d $eax
$34 = 7
(gdb) kill
Kill the program being debugged? (y or n) y
(gdb) run
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 37647
You successfully passed stage 3.
 
please enter password for stage 4: 19840430
 
Breakpoint 8, 0x08049225 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 9, 0x08049232 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 10, 0x08049250 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 11, 0x08049269 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 12, 0x08049275 in stage4 ()
(gdb) print /d $eax
$35 = 4
(gdb) print /d $edi
$36 = 4
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 13, 0x0804927f in stage4 ()
(gdb) print /d $edi
$37 = 4
(gdb) print /d $eax
$38 = 6
(gdb) kill
Kill the program being debugged? (y or n) y
(gdb) run
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 37647
You successfully passed stage 3.
 
please enter password for stage 4: 55070287
 
Breakpoint 8, 0x08049225 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 9, 0x08049232 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 10, 0x08049250 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 11, 0x08049269 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 12, 0x08049275 in stage4 ()
(gdb) print /d $eax
$39 = 4
(gdb) print /d $edi
$40 = 4
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 13, 0x0804927f in stage4 ()
(gdb) print /d $edi
$41 = 4
(gdb) print /d $eax
$42 = 5
(gdb) kill
Kill the program being debugged? (y or n) y
(gdb) run
Starting program: /home/swpig/Documents/ICS/bomb1191
please enter password for stage 1: 165124
You successfully passed stage 1.
 
please enter password for stage 2: 16383
You successfully passed stage 2.
 
please enter password for stage 3: 37647
You successfully passed stage 3.
 
please enter password for stage 4: 82751500
 
Breakpoint 8, 0x08049225 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 9, 0x08049232 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 10, 0x08049250 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 11, 0x08049269 in stage4 ()
(gdb) s
Single stepping until exit from function stage4,
which has no line number information.
 
Breakpoint 12, 0x08049275 in stage4 ()
(gdb) print /d $eax
$43 = 4
(gdb) print /d $edi