diff options
| -rw-r--r-- | README.md | 27 | ||||
| -rw-r--r-- | poetry.lock | 292 | ||||
| -rw-r--r-- | pyproject.toml | 3 | ||||
| -rwxr-xr-x | src/delf.py | 191 | ||||
| -rw-r--r-- | test/compile_commands.json | 7 | ||||
| -rw-r--r-- | test/makefile | 35 | ||||
| -rw-r--r-- | test/test.c | 32 |
7 files changed, 372 insertions, 215 deletions
@@ -22,21 +22,18 @@ You can then run it with `poetry shell` or `poetry run`.<br/> ## Options -For a list of available options just run `delf -h`:<br/> +For a list of available options just run `delf --help`:<br/> ```txt -usage: delf [-h] [--dbg] [--obj OBJ] [--header] [--symboltable] [--phdrs] - [--shdrs] [--symbolindex] [--stentries] [--objcode] [--test] - [--test2] [--funcs] [--objs] [--dynsym] [--dlpath] [--phdynent] - [--section SECTION] [--dumpfunc DUMPFUNC] - [--dumpfuncasm DUMPFUNCASM] [--textasm] [--dynsecents] [--reladyn] - [--relaplt] [--rodata] [--disass DISASS] - -optional arguments: +$ delf --help +usage: delf [-h] [--dbg] [--obj OBJ] [--header] [--symboltable] [--phdrs] [--shdrs] [--symbolindex] [--stentries] [--objcode] [--test] [--test2] [--listdso] [--funcs] [--objs] [--dynsym] [--dlpath] [--phdynent] + [--section SECTION] [--dumpfunc DUMPFUNC] [--dumpfuncasm DUMPFUNCASM] [--textasm] [--dynsecents] [--reladyn] [--relaplt] [--rodata] [--disass DISASS] [--disassp DISASSP] [--got] [--gotplt] + [--noclor] + +options: -h, --help show this help message and exit --dbg debug - --obj OBJ path to the executbale, shared object or object you - want to load in bruiser + --obj OBJ path to the executbale, shared object or object you want to load in bruiser --header dump headers --symboltable dump symbol table --phdrs dump program haeders @@ -46,6 +43,7 @@ optional arguments: --objcode dump objects --test test switch --test2 test switch 2 + --listdso list DSOs --funcs dump functions --objs dump objects --dynsym dump dynamic symbol table @@ -60,8 +58,11 @@ optional arguments: --reladyn .rela.dyn entries --relaplt .rela.plt entries --rodata dump .rodata - --disass DISASS disassemblt a section - + --disass DISASS disassembls a section by name in section headers + --disassp DISASSP disassembls a section by index in program headers + --got dump .got section + --gotplt dump .got.plt section + --noclor dont use color ``` ## Example usage diff --git a/poetry.lock b/poetry.lock index 1f51b04..cdfbfa8 100644 --- a/poetry.lock +++ b/poetry.lock @@ -1,6 +1,37 @@ # This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand. [[package]] +name = "annotated-types" +version = "0.7.0" +description = "Reusable constraint types to use with typing.Annotated" +optional = false +python-versions = ">=3.8" +files = [ + {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"}, + {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"}, +] + +[[package]] +name = "anyio" +version = "4.4.0" +description = "High level compatibility layer for multiple asynchronous event loop implementations" +optional = false +python-versions = ">=3.8" +files = [ + {file = "anyio-4.4.0-py3-none-any.whl", hash = "sha256:c1b2d8f46a8a812513012e1107cb0e68c17159a7a594208005a57dc776e1bdc7"}, + {file = "anyio-4.4.0.tar.gz", hash = "sha256:5aadc6a1bbb7cdb0bede386cac5e2940f5e2ff3aa20277e991cf028e0585ce94"}, +] + +[package.dependencies] +idna = ">=2.8" +sniffio = ">=1.1" + +[package.extras] +doc = ["Sphinx (>=7)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx-rtd-theme"] +test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "uvloop (>=0.17)"] +trio = ["trio (>=0.23)"] + +[[package]] name = "astroid" version = "3.2.2" description = "An abstract syntax tree for Python with inference support." @@ -94,6 +125,17 @@ files = [ ] [[package]] +name = "certifi" +version = "2024.6.2" +description = "Python package for providing Mozilla's CA Bundle." +optional = false +python-versions = ">=3.6" +files = [ + {file = "certifi-2024.6.2-py3-none-any.whl", hash = "sha256:ddc6c8ce995e6987e7faf5e3f1b02b302836a0e5d98ece18392cb1a36c72ad56"}, + {file = "certifi-2024.6.2.tar.gz", hash = "sha256:3cd43f1c6fa7dedc5899d69d3ad0398fd018ad1a17fba83ddaf78aa46c747516"}, +] + +[[package]] name = "click" version = "8.1.7" description = "Composable command line interface toolkit" @@ -134,6 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HTTP client." +optional = false +python-versions = ">=3.8" +files = [ + {file = "httpcore-1.0.5-py3-none-any.whl", hash = "sha256:421f18bac248b25d310f3cacd198d55b8e6125c107797b609ff9b7a6ba7991b5"}, + {file = "httpcore-1.0.5.tar.gz", hash = "sha256:34a38e2f9291467ee3b44e89dd52615370e152954ba21721378a87b2960f7a61"}, +] + +[package.dependencies] +certifi = "*" +h11 = ">=0.13,<0.15" + +[package.extras] +asyncio = ["anyio (>=4.0,<5.0)"] +http2 = ["h2 (>=3,<5)"] +socks = ["socksio (==1.*)"] +trio = ["trio (>=0.22.0,<0.26.0)"] + +[[package]] +name = "httpx" +version = "0.27.0" +description = "The next generation HTTP client." +optional = false +python-versions = ">=3.8" +files = [ + {file = "httpx-0.27.0-py3-none-any.whl", hash = "sha256:71d5465162c13681bff01ad59b2cc68dd838ea1f10e51574bac27103f00c91a5"}, + {file = "httpx-0.27.0.tar.gz", hash = "sha256:a0cb88a46f32dc874e04ee956e4c2764aba2aa228f650b06788ba6bda2962ab5"}, +] + +[package.dependencies] +anyio = "*" +certifi = "*" +httpcore = "==1.*" +idna = "*" +sniffio = "*" + +[package.extras] +brotli = ["brotli", "brotlicffi"] +cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"] +http2 = ["h2 (>=3,<5)"] +socks = ["socksio (==1.*)"] + +[[package]] +name = "idna" +version = "3.7" +description = "Internationalized Domain Names in Applications (IDNA)" +optional = false +python-versions = ">=3.5" +files = [ + {file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"}, + {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"}, +] + +[[package]] name = "isort" version = "5.13.2" description = "A Python utility / library to sort Python imports." @@ -251,6 +371,29 @@ files = [ ] [[package]] +name = "openai" +version = "1.31.0" +description = "The official Python library for the openai API" +optional = false +python-versions = ">=3.7.1" +files = [ + {file = "openai-1.31.0-py3-none-any.whl", hash = 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+++ b/src/delf.py @@ -19,10 +19,10 @@ # MA 02110-1301, USA.*/ # *****************************************************************************/ import argparse -import code import os import subprocess import sys +import typing from capstone import CS_ARCH_X86, CS_MODE_64, Cs @@ -30,6 +30,8 @@ from capstone import CS_ARCH_X86, CS_MODE_64, Cs class ELF_TYPE_SIZES: + """Const class that holds ELF type sizes in bytes""" + ELF32_HALF = 2 ELF64_HALF = 2 ELF32_WORD = 4 @@ -53,7 +55,7 @@ def SigHandler_SIGINT(signum, frame): sys.exit(0) -class CLIArgParser(object): +class CLIArgParser: def __init__(self): parser = argparse.ArgumentParser() parser.add_argument("--dbg", action="store_true", help="debug", default=False) @@ -194,6 +196,12 @@ class CLIArgParser(object): help="dump .got.plt section", default=False, ) + parser.add_argument( + "--nocolor", + action="store_true", + help="dont use color", + default=False, + ) self.args = parser.parse_args() if self.args.obj is None: raise Exception( @@ -273,16 +281,29 @@ class ELF_RELA: self.r_addend = r_addend -def ffs(offset, header_list, numbered, *args): +def ffs( + offset, + header_list, + numbered, + nocolor, + *args, +): # cn = Colors.green - ch = Colors.cyan - cd = Colors.blue - cb = Colors.BOLD - ci = Colors.red - ce = Colors.ENDC + if nocolor: + ch = "" + cd = "" + cb = "" + ci = "" + ce = "" + else: + ch = Colors.cyan + cd = Colors.blue + cb = Colors.BOLD + ci = Colors.red + ce = Colors.ENDC max_column_width = [] - lines = [] - numbers_f = [] + lines: typing.List[str] = [] + numbers_f: typing.List[int] = [] dummy = [] if numbered: @@ -1210,8 +1231,10 @@ class Symbol_Table_Entry64: self.st_type = st_type -class ELF(object): - def __init__(self, so): +class ELF: + """The ELF class that holds everything about the ELF file.""" + + def __init__(self, so, argparser): self.so = so self.so.seek(0, 0) self.elfhdr = ELFHDR(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) @@ -1240,6 +1263,7 @@ class ELF(object): self.plt_got_ents = [] self.got_ents = [] self.got_plt_ents = [] + self.argparser = argparser def init(self, size): self.size = size @@ -1420,7 +1444,7 @@ class ELF(object): header = ["d_tag", "d_un"] tag_list = [get_ph_dynamic_ent_tag_type(ph.d_tag) for ph in self.ph_dyn_ent] un_list = [ph.d_un for ph in self.ph_dyn_ent] - lines = ffs(2, header, True, tag_list, un_list) + lines = ffs(2, header, True, self.argparser.args.nocolor, tag_list, un_list) for line in lines: print(line) @@ -1473,7 +1497,7 @@ class ELF(object): self.dlpath = repr(obj) count = int() if dump: - strrep = [] + strrep: typing.List[str] = [] for byte in obj: if count % 16 == 0: for ch in strrep: @@ -1529,6 +1553,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocoor, name_list, size_list, value_list, @@ -1551,6 +1576,7 @@ class ELF(object): 2, header, True, + self.argparser.args.noclor, name_list, size_list, value_list, @@ -1609,6 +1635,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocolor, mag_list, class_list, data_list, @@ -1661,6 +1688,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocolor, type_list, flags_list, offset_list, @@ -1706,6 +1734,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocolor, name_list, type_list, flag_list, @@ -1765,6 +1794,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocolor, idx_list, name_list, value_list, @@ -1811,6 +1841,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocolor, idx_list, name_list, value_list, @@ -1834,6 +1865,7 @@ class ELF(object): 2, header, True, + self.argparser.args.nocolor, tag_string_list, tag_list, value_list, @@ -1847,7 +1879,15 @@ class ELF(object): r_offset_list = [entry["r_offset"] for entry in to_dump] r_info_list = [entry["r_info"] for entry in to_dump] addend_list = [entry["r_addend"] for entry in to_dump] - lines = ffs(2, header, True, r_offset_list, r_info_list, addend_list) + lines = ffs( + 2, + header, + True, + self.argparser.args.nocolor, + r_offset_list, + r_info_list, + addend_list, + ) for line in lines: print(line) @@ -1855,7 +1895,9 @@ class ELF(object): header = ["r_offset", "r_info"] r_offset_list = [entry["r_offset"] for entry in to_dump] r_info_list = [entry["r_info"] for entry in to_dump] - lines = ffs(2, header, True, r_offset_list, r_info_list) + lines = ffs( + 2, header, True, self.argparser.args.nocolor, r_offset_list, r_info_list + ) for line in lines: print(line) @@ -2037,14 +2079,14 @@ class ELF(object): def dump_got(self): header = ["value"] value_list = [entry for entry in self.got_ents] - lines = ffs(2, header, True, value_list) + lines = ffs(2, header, True, self.argparser.args.nocolor, value_list) for line in lines: print(line) def dump_got_plt(self): header = ["value"] value_list = [entry for entry in self.got_plt_ents] - lines = ffs(2, header, True, value_list) + lines = ffs(2, header, True, self.argparser.args.nocolor, value_list) for line in lines: print(line) @@ -2074,109 +2116,11 @@ def ch_exe_to_so(path): so.close -def elf_init(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - - -def elf_get_func_names(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_symbol_string(ELF_ST_TYPE.STT_FUNC, False) - - -def elf_get_text_section(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_section(".text", False) - - -def elf_get_section(name): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_section(name, False) - - -def elf_get_rodata_section(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_section(".rodata", False) - - -# obj here means variables or what the C standard means by objects - - -def elf_get_obj_names(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_symbol_string(ELF_ST_TYPE.STT_OBJECT, False) - - -# obj here means variables or what the C standard means by objects - - -def elf_get_obj_sizes(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_obj_size(ELF_ST_TYPE.STT_OBJECT, False) - - -def elf_get_func_code(): - so = openSO_r(sys.argv[1]) - elf = ELF(so) - elf.init(64) - return elf.dump_funcs(False) - - -def elf_get_func_code_byname(): - so = openSO_r(sys.argv[1]) - arg = openSO_r(sys.argv[2]) - elf = ELF(so) - elf.init(64) - counter = 0 - # hit = False - for name in elf.dump_symbol_string(ELF_ST_TYPE.STT_FUNC, False): - if name == arg: - code = elf.dump_funcs(False)[counter] - # hit = True - counter += 1 - return code - - -class Call_Rewriter(object): - # def __init__(self, obj_code, arch, mode): - def __init__(self, obj_code): - self.obj_code = bytes(obj_code) - self.md = Cs(CS_ARCH_X86, CS_MODE_64) - # self.md = Cs(arch, mode) - - def dumpall(self): - for i in self.md.disasm(self.obj_code, 0x1): - print("0x%x:\t%s\t%s" % (i.address, i.mnemonic, i.op_str)) - - def run(self): - for i in self.md.disasm(self.obj_code, 0x1): - if i.mnemonic == "call": - print("0x%x:\t%s\t%s" % (i.address, i.mnemonic, i.op_str)) - print(i.bytes) - - -class Global_Rewriter(object): - def __init__(self): - pass - - -class Rewriter(object): - def __init__(self, path, new_name): +class Rewriter: + def __init__(self, path, new_name, argparser): so = openSO_r(path) - self.elf = ELF(so) + self.argparser = argparser + self.elf = ELF(so, argparser) self.elf.init(64) # shutil.copyfile(path, "/tmp/exe") self.magic_section_number = int() @@ -2223,9 +2167,10 @@ class Rewriter(object): def main() -> None: + """The entryp point.""" argparser = CLIArgParser() so = openSO_r(argparser.args.obj) - elf = ELF(so) + elf = ELF(so, argparser) elf.init(64) if argparser.args.header: elf.dump_header() @@ -2253,7 +2198,7 @@ def main() -> None: elif argparser.args.section: elf.dump_section(argparser.args.section, True) elif argparser.args.test2: - rewriter = Rewriter(argparser.args.obj, "new_exe") + rewriter = Rewriter(argparser.args.obj, "new_exe", argparser) new_text = bytes() rewriter.fix_section_offsets(".text", 1000, new_text) elif argparser.args.dumpfunc: @@ -2296,7 +2241,7 @@ def main() -> None: index = argparser.args.disassp # section not executable message if byte2int(elf.phdr[index].p_flags) & 0x1 != 1: - print("program header section is not " "executable but since you asked...") + print("program header section is not executable but since you asked...") header_offset = elf.phdr[index].p_offset header_size = elf.phdr[index].p_filesz elf.so.seek(byte2int(header_offset)) diff --git a/test/compile_commands.json b/test/compile_commands.json deleted file mode 100644 index ca764a6..0000000 --- a/test/compile_commands.json +++ /dev/null @@ -1,7 +0,0 @@ -[ - { - "command": "cc -c -fpic -O0 -g -v --debug -o test.o test.c", - "directory": "/home/bloodstalker/extra/delf/test", - "file": "/home/bloodstalker/extra/delf/test/test.c" - } -]
\ No newline at end of file diff --git a/test/makefile b/test/makefile deleted file mode 100644 index 9414f84..0000000 --- a/test/makefile +++ /dev/null @@ -1,35 +0,0 @@ - -##################################VARS################################# -CC?=gcc -CC=gcc -CC_FLAGS=-fpic -O0 -g -v --debug -#LD_FLAGS= -l bfd -LD_FLAGS= -TARGET=test -##################################RULES################################ -.DEFAULT:all - -.PHONY:all clean help - -all:$(TARGET) $(TARGET).so $(TARGET).asm - -.c.o: - $(CC) $(CC_FLAGS) -c $< -o $@ - -$(TARGET): $(TARGET).o - $(CC) $^ $(LD_FLAGS) -o $@ - -$(TARGET).asm: $(TARGET).o - objdump -r -d -M intel -S $(TARGET).o > $(TARGET).asm - -$(TARGET).so: $(TARGET).o - $(CC) $^ $(LD_FLAGS) -shared -o $@ - -clean: - rm -f *.o *~ $(TARGET) $(TARGET).so $(TARGET).asm - -help: - @echo 'all builds so and exe. all is the default.' - @echo 'clean runs clean.' - @echo 'help runs help.' - diff --git a/test/test.c b/test/test.c deleted file mode 100644 index 00f92ad..0000000 --- a/test/test.c +++ /dev/null @@ -1,32 +0,0 @@ -#include "stdio.h" - -int myfunc1(void) {return 1;} -int myfunc2(void) {return 2;} -int myfunc3(void) {return 3;} -int myfunc4(void) {return 4;} -int myfunc5(void) {return 5;} -int myfunc6(void) {return 6;} -int add2(int a, int b) {return a + b;} -int sub2(int a, int b) {return a - b;} -double adddouble(double a, double b) {return a+b;} -double subdouble(double a, double b) {return a-b;} -double triple(double a, double b, double c) {return a+b+c;} -int quad(int a, int b, int c, int d) {return add2(a,b) + add2(c,d);} -const char* passthrough(const char* a) {return a;} -void ext_1(void) {printf("%s", "hey there sleepy-head.\n");} - -int myvar1 = 1; -int myvar2 = 2; -int myvar3 = 3; -int myvar4 = 4; - -int glob(void) {return myvar1+myvar2+myvar3+myvar4;} - -int main(int argc, char** argv) { - int sum; - sum = add2(10, 20); - printf("i live!\n"); - int res = sub2(20, 10); - ext_1(); - return quad(1,2,3,4); -} |