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ExtractOffsets.py: minor syntactic, cosmetic and safety changes

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This commit is contained in:
Maxime Meignan
2023-10-06 10:31:26 +02:00
committed by GitHub
parent 75b0168045
commit 5f82ba2efe
1 changed files with 7 additions and 6 deletions
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Offsets/ExtractOffsets.py
+6 -5
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@@ -14,8 +14,8 @@ import threading
CSVLock = threading.Lock()
machineType = dict(x86=332, x64=34404)
knownImageVersions = dict(ntoskrnl=list(), wdigest=list(),ci=list())
extensions_by_mode = dict(ntoskrnl="exe", wdigest="dll",ci="dll")
knownImageVersions = dict(ntoskrnl=list(), wdigest=list(), ci=list())
extensions_by_mode = dict(ntoskrnl="exe", wdigest="dll", ci="dll")
def find(key, value):
for k, v in value.items():
@@ -144,13 +144,14 @@ def extractOffsets(input_file, output_file, mode):
# check image type (ntoskrnl, wdigest, etc.)
r = run(["r2", "-c", "iE", "-qq", input_file], capture_output=True)
for line in r.stdout.decode().splitlines():
line = line.lower()
if "ntoskrnl.exe" in line:
imageType = "ntoskrnl"
break
elif "wdigest.dll" in line:
imageType = "wdigest"
break
elif "CI.dll" in line:
elif "ci.dll" in line:
imageType = "ci"
break
else:
@@ -250,7 +251,7 @@ def loadOffsetsFromCSV(loadedVersions, CSVPath):
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('mode', help='ntoskrnl or wdigest or ci. Mode to download and extract offsets for either ntoskrnl or wdigest or ci')
parser.add_argument('mode', help='"ntoskrnl", "wdigest" or "ci". Mode to download and extract offsets from either ntoskrnl.exe, wdigest.dll or ci.dll')
parser.add_argument('-i', '--input', dest='input', required=True,
help='Single file or directory containing ntoskrnl.exe / wdigest.dll / ci.dll to extract offsets from. If in download mode, the PE downloaded from MS symbols servers will be placed in this folder.')
parser.add_argument('-o', '--output', dest='output',
@@ -261,7 +262,7 @@ if __name__ == '__main__':
args = parser.parse_args()
mode = args.mode.lower()
if mode not in knownImageVersions:
print(f'[!] ERROR : unsupported mode "{args.mode}", supported mode are: "ntoskrnl" and "wdigest" and "ci"')
print(f'[!] ERROR : unsupported mode "{args.mode}", supported mode are: "ntoskrnl", "wdigest" and "ci"')
exit(1)
# check R2 version