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https://github.com/trimscash/elfmt
Read text section bytes and format it for shellcode. based on trimscash/texthex
https://github.com/trimscash/elfmt
cli elf elf-parser exploiting hex-converter readelf shellcode shellcode-convert tool
Last synced: 30 days ago
JSON representation
Read text section bytes and format it for shellcode. based on trimscash/texthex
- Host: GitHub
- URL: https://github.com/trimscash/elfmt
- Owner: trimscash
- License: cc0-1.0
- Created: 2023-12-23T10:28:59.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2023-12-26T18:46:56.000Z (11 months ago)
- Last Synced: 2023-12-26T20:46:17.029Z (11 months ago)
- Topics: cli, elf, elf-parser, exploiting, hex-converter, readelf, shellcode, shellcode-convert, tool
- Language: Rust
- Homepage:
- Size: 24.4 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# elfmt
Read text section bytes and format it for shellcode.
# Setup
```
git clone https://github.com/trimscash/elfmt ~
cd elfmt
cargo build -r
echo "export PATH=\$PATH:\$HOME/elfmt/target/release" >> ~/.zshrc
source ~/.zshrc
```
and use it.
Replace .zshrc with the one you are using
# Usage
```
Read text section bytes and format it.
Without option, it just print text section bytes.
Usage: elfmt [OPTIONS]
Arguments:
Options:
-s, --string-mode Ex: \x55\x48\x89\xe5\x48
-a, --array-mode Ex: 0x55, 0x48, 0x89, 0xe5, 0x48
-p, --python-mode Ex: python3 -c 'import sys; sys.stdout.buffer.write(b"\x55\x48\x89\xe5\x48")'
-d, --disassemble-mode Ex:
push rbp
mov rbp,rsp
mov rax,3Bh
...
-w, --write-mode Direct stdout. If you choose this option, other option will be ignore
-h, --help Print help
```
# Example
```
$ elfmt test.elf
554889e548c7c03b000000488d3c2524104000488d3425361040006a004889e20f05c9c32f62696e2f6361740063617400666c6167002d1040000000000031104000000000000000000000000000
```
```
$ elfmt test.elf -aspd
\x55\x48\x89\xe5\x48\xc7\xc0\x3b\x00\x00\x00\x48\x8d\x3c\x25\x24\x10\x40\x00\x48\x8d\x34\x25\x36\x10\x40\x00\x6a\x00\x48\x89\xe2\x0f\x05\xc9\xc3\x2f\x62\x69\x6e\x2f\x63\x61\x74\x00\x63\x61\x74\x00\x66\x6c\x61\x67\x00\x2d\x10\x40\x00\x00\x00\x00\x00\x31\x10\x40\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00
0x55, 0x48, 0x89, 0xe5, 0x48, 0xc7, 0xc0, 0x3b, 0x00, 0x00, 0x00, 0x48, 0x8d, 0x3c, 0x25, 0x24, 0x10, 0x40, 0x00, 0x48, 0x8d, 0x34, 0x25, 0x36, 0x10, 0x40, 0x00, 0x6a, 0x00, 0x48, 0x89, 0xe2, 0x0f, 0x05, 0xc9, 0xc3, 0x2f, 0x62, 0x69, 0x6e, 0x2f, 0x63, 0x61, 0x74, 0x00, 0x63, 0x61, 0x74, 0x00, 0x66, 0x6c, 0x61, 0x67, 0x00, 0x2d, 0x10, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x31, 0x10, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
python3 -c 'import sys; sys.stdout.buffer.write(b"\x55\x48\x89\xe5\x48\xc7\xc0\x3b\x00\x00\x00\x48\x8d\x3c\x25\x24\x10\x40\x00\x48\x8d\x34\x25\x36\x10\x40\x00\x6a\x00\x48\x89\xe2\x0f\x05\xc9\xc3\x2f\x62\x69\x6e\x2f\x63\x61\x74\x00\x63\x61\x74\x00\x66\x6c\x61\x67\x00\x2d\x10\x40\x00\x00\x00\x00\x00\x31\x10\x40\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")'
push rbp
mov rbp,rsp
mov rax,3Bh
lea rdi,[401024h]
lea rsi,[401036h]
push 0
mov rdx,rsp
syscall
leave
ret
(bad)
imul ebp,[rsi+2Fh],746163h
movsxd esp,[rcx+74h]
add [rsi+6Ch],ah
(bad)
add [rel 404Bh],ch
add [rax],al
add [rcx],dh
adc [rax],al
add [rax],al
add [rax],al
add [rax],al
add [rax],al
add [rax],al
add [rax],al
```
```
$ texthex test.elf -w
UH��H��;H�<%$@H�4%6@jH����/bin/catcatflag-@1@
```