dump-diff

Crude diff tools for assembly binary blobs

usage

Usage: dump-diff [OPTIONS] --target <TARGET> --current <CURRENT> --addr <ADDR> --arch <ARCH> --mode <MODE>Options: -t, --target <TARGET> Filename + optional offset -c, --current <CURRENT> Filename + optional offset -x, --addr <ADDR> Virtual address -l, --length <LENGTH> Number of bytes to compare (default: until EOF) -a, --arch <ARCH> Architecture -m, --mode <MODE> Mode -e, --endianness <ENDIANNESS> Endianness (default: little) -h, --help Print help

• TARGET: the target binary, optionally followed by a colon and an offset. -t file.bin:0x42.
• CURRENT: your current compiled code, same as above.
• ADDR: the (virtual) memory address where the code is located at.
• ARCH: the architecture
• MODE: the mode
• ENDIANNESS: big or little

⚠️ WARNING ⚠️ The tool doesn't check the arch/mode tuple, so you can ask for ARM64 + RiscV64 (and it will panic).

Example

$ dump-diff -t target.bin -c current.bin -x 0x821843e8 -a ppc -m mode32 -e bigmflr r12 mflr r12stw r12, -8(r1) stw r12, -8(r1)std r30, -0x18(r1) std r30, -0x18(r1)std r31, -0x10(r1) std r31, -0x10(r1)stfd f31, -0x20(r1) stfd f31, -0x20(r1)stwu r1, -0x80(r1) stwu r1, -0x80(r1)lfs f31, 0x54(r3) mr r31, r3 <===========mr r31, r3 mr r30, r4 <===========mr r30, r4 lfs f31, 0x54(r31) <===========bl 0x8210fb68 bl 0x8210fb68extsh r11, r30 extsh r11, r30lis r10, -0x7dff lis r10, -0x7dffstd r11, 0x50(r1) std r11, 0x50(r1)lfd f0, 0x50(r1) lfd f0, 0x50(r1)fcfid f0, f0 fcfid f0, f0lis r9, -0x7e00 lis r9, -0x7e00frsp f12, f0 frsp f12, f0lfd f0, -0x3fb0(r10) lfd f0, -0x3fb0(r10)lfs f13, 0x1580(r9) lfs f13, 0x1580(r9)fmuls f12, f1, f12 fmuls f12, f1, f12fnmsub f0, f12, f0, f31 fnmsub f0, f12, f0, f31frsp f0, f0 frsp f0, f0fcmpu cr6, f0, f13 fcmpu cr6, f0, f13blt cr6, 0x82184450 blt cr6, 0x82184450fsubs f0, f0, f13 fsubs f0, f0, f13b 0x82184464 b 0x82184464lis r11, -0x7e00 lis r11, -0x7e00lfs f12, 0x7a0(r11) lfs f12, 0x7a0(r11)fcmpu cr6, f0, f12 fcmpu cr6, f0, f12bge cr6, 0x82184464 bge cr6, 0x82184464fadds f0, f0, f13 fadds f0, f0, f13stfs f0, 0x54(r31) stfs f0, 0x54(r31)addi r1, r1, 0x80 addi r1, r1, 0x80lwz r12, -8(r1) lwz r12, -8(r1)mtlr r12 mtlr r12lfd f31, -0x20(r1) lfd f31, -0x20(r1)ld r30, -0x18(r1) ld r30, -0x18(r1)ld r31, -0x10(r1) ld r31, -0x10(r1)blr blr