diff --git a/buffer-overflow-libc/.gitignore b/buffer-overflow-libc/.gitignore new file mode 100644 index 0000000..829b1c7 --- /dev/null +++ b/buffer-overflow-libc/.gitignore @@ -0,0 +1,15 @@ +# Generated files +node_modules +output +dist + +# Editor directories and files +.vscode/* +!.vscode/extensions.json +.idea +.DS_Store +*.suo +*.ntvs* +*.njsproj +*.sln +*.sw? diff --git a/buffer-overflow-libc/README.md b/buffer-overflow-libc/README.md new file mode 100644 index 0000000..ca36c21 --- /dev/null +++ b/buffer-overflow-libc/README.md @@ -0,0 +1,32 @@ +# Buffer overflow presentation + +Presentation about buffer overflow including libc and canary, using pwntools. + +## Plan + +Show the binary + +Start working on python script: + +```py +from pwn import * + +# --- + +bin = ELF('../challenges/hello') +libc = ELF('/usr/lib/libc.so.6') + +# --- + +context.terminal = "kitty" +context.arch = "amd64" + +# io = process('../challenges/hello') +io = gdb.debug('../challenges/hello') + +# show GDB window + +io.interactive() + + +``` diff --git a/buffer-overflow-libc/package.json b/buffer-overflow-libc/package.json new file mode 100644 index 0000000..6220398 --- /dev/null +++ b/buffer-overflow-libc/package.json @@ -0,0 +1,21 @@ +{ + "name": "buffer-overflow-libc", + "private": true, + "version": "0.0.0", + "scripts": { + "start": "vite", + "serve": "vite", + "build": "tsc && vite build" + }, + "dependencies": { + "@motion-canvas/core": "^3.14.1", + "@motion-canvas/2d": "^3.14.2", + "@motion-canvas/ffmpeg": "^1.1.0" + }, + "devDependencies": { + "@motion-canvas/ui": "^3.14.2", + "@motion-canvas/vite-plugin": "^3.14.1", + "typescript": "^5.2.2", + "vite": "^4.0.0" + } +} \ No newline at end of file diff --git a/buffer-overflow-libc/pnpm-lock.yaml b/buffer-overflow-libc/pnpm-lock.yaml new file mode 100644 index 0000000..5950328 --- /dev/null +++ b/buffer-overflow-libc/pnpm-lock.yaml @@ -0,0 +1,770 @@ +lockfileVersion: '6.0' + +settings: + autoInstallPeers: true + 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100644 index 0000000..d15c70d --- /dev/null +++ b/buffer-overflow-libc/src/project.meta @@ -0,0 +1,31 @@ +{ + "version": 0, + "shared": { + "background": "rgb(40,44,52)", + "range": [ + 0, + null + ], + "size": { + "x": 3840, + "y": 2160 + }, + "audioOffset": 0 + }, + "preview": { + "fps": 30, + "resolutionScale": 1 + }, + "rendering": { + "fps": 60, + "resolutionScale": 1, + "colorSpace": "srgb", + "exporter": { + "name": "@motion-canvas/ffmpeg", + "options": { + "fastStart": true, + "includeAudio": true + } + } + } +} \ No newline at end of file diff --git a/buffer-overflow-libc/src/project.ts b/buffer-overflow-libc/src/project.ts new file mode 100644 index 0000000..b687c3c --- /dev/null +++ b/buffer-overflow-libc/src/project.ts @@ -0,0 +1,10 @@ +import {makeProject} from '@motion-canvas/core'; + +import intro from './scenes/intro?scene'; +import program from './scenes/program?scene'; +import code from './scenes/code?scene'; +import printf from './scenes/printf?scene'; + +export default makeProject({ + scenes: [intro, program, code, printf], +}); diff --git a/buffer-overflow-libc/src/scenes/code.meta b/buffer-overflow-libc/src/scenes/code.meta new file mode 100644 index 0000000..cb48d62 --- /dev/null +++ b/buffer-overflow-libc/src/scenes/code.meta @@ -0,0 +1,5 @@ +{ + "version": 0, + "timeEvents": [], + "seed": 2457166561 +} \ No newline at end of file diff --git a/buffer-overflow-libc/src/scenes/code.tsx b/buffer-overflow-libc/src/scenes/code.tsx new file mode 100644 index 0000000..494d9d5 --- /dev/null +++ b/buffer-overflow-libc/src/scenes/code.tsx @@ -0,0 +1,394 @@ +import {Circle, Layout, Node, Ray, Rect, Txt, makeScene2D, saturate} from '@motion-canvas/2d'; +import {DEFAULT, Direction, PossibleVector2, SignalValue, Vector2, all, beginSlide, createRef, delay, modify, slideTransition} from '@motion-canvas/core'; +import { CodeBlock, remove, insert, edit, lines, word } from '@motion-canvas/2d/lib/components/CodeBlock'; + +const BACKGROUND = '#282C34'; +const DARKER = '#21252B'; +const RED = '#E06C75'; +const GREEN = '#98C379'; +const YELLOW = '#E5C07B'; +const BLUE = '#61AFEF'; +const MAGENTA = '#C678DD'; +const CYAN = '#56B6C2'; +const GRAY = '#ABB2BF'; +const WHITE = '#FFFFFF'; +const BLACK = '#000000'; + +function fromTo(a: Node, b: Node, value: SignalValue) { + return modify(value, v => + a + .worldToParent() + .inverse() + .multiply(b.worldToParent()) + .transformPoint(new Vector2(v)), + ); + } + +export default makeScene2D(function* (view) { + const code = createRef(); + yield view.add( + ); + + yield* slideTransition(Direction.Top); + yield* beginSlide("Cleanup"); + + yield* code().edit(.4, false)` + ${edit("undefined8", "long")} main(${remove("void")}) + { + ${remove(`long lVar1; + bool bVar2; + char *pcVar3; + long in_FS_OFFSET; + `)}char name [32]; + int loop${insert(" = true")}; + + ${insert("long ")}${edit("lVar1","stackchk")} = *(long *)(in_FS_OFFSET + 0x28);${remove(` + bVar2 = true;`)} + setbuf(stdout,(char *)0x0); + setbuf(stderr,(char *)0x0); + while (${edit("bVar2","loop")}) { + printf("Enter your name: "); + ${insert("int ")}pcVar3 = gets(name); + if (${remove("(int)")}pcVar3 == 0) { + puts("Bye bye"); + ${edit("bVar2","loop")} = false; + } + else { + printf("Welcome "); + printf(name); + putchar(${edit("10", "'\\n'")}); + } + } + if (${edit("lVar1","stackchk")} != *(long *)(in_FS_OFFSET + 0x28)) {${remove(` + /* WARNING: Subroutine does not return */`)} + __stack_chk_fail(); + } + return 0; + } + `; + yield* code().edit(.4, false)` + long main() + { + ${insert(` + // undefined8 Stack[-0x10]:8 stackchk + // int Stack[-0x18]:4 loop + // char[32] Stack[-0x38] name + + `)}char name [32]; + int loop = true; + + long stackchk = *(long *)(in_FS_OFFSET + 0x28); + setbuf(stdout,(char *)0x0); + setbuf(stderr,(char *)0x0); + while (loop) { + printf("Enter your name: "); + int pcVar3 = gets(name); + if (pcVar3 == 0) { + puts("Bye bye"); + loop = false; + } + else { + printf("Welcome "); + printf(name); + putchar('\\n'); + } + } + if (stackchk != *(long *)(in_FS_OFFSET + 0x28)) { + __stack_chk_fail(); + } + return 0; + } + `; + yield* code().edit(.4, false)` + long main() + { + // ${edit("undefined8", "long ")} Stack[-0x10]:8 stackchk + // int Stack[-0x18]:4 loop + // char[32] Stack[-0x38] name + + char name [32]; + int loop = true; + + long stackchk = *(long *)(in_FS_OFFSET + 0x28); + setbuf(stdout,(char *)0x0); + setbuf(stderr,(char *)0x0); + while (loop) { + printf("Enter your name: "); + int pcVar3 = gets(name); + if (pcVar3 == 0) { + puts("Bye bye"); + loop = false; + } + else { + printf("Welcome "); + printf(name); + putchar('\\n'); + } + } + if (stackchk != *(long *)(in_FS_OFFSET + 0x28)) { + __stack_chk_fail(); + } + return 0; + } + `; + + yield* beginSlide("Add stack"); + + const stackTitle = createRef(); + const rect = createRef(); + const innerLayout = createRef(); + const prevFrame = createRef(); + const rip = createRef(); + const rbp = createRef(); + + view.add(<> + + + + + + + + + + + + + + + + [rect().x() - rect().width()/2 + 144/2 + 20, -950]} + opacity={rect().opacity} + fontFamily="monospace" + fill={GRAY} + /> + ); + + yield* all( + rect().x(3840/4, .3), + rect().opacity(1, .3), + code().x(-3840/4, .3), + rect().shadowBlur(20, .3), + rect().shadowOffset(10, .3), + delay(.2, all( + rect().shadowColor(BLACK + "50", .3), + prevFrame().opacity(0).opacity(1, .2), + prevFrame().margin([200,0,0,0]).margin(0, .2), + delay(.2, all( + rip().opacity(0).opacity(1, .2), + rip().margin([200,0,0,0]).margin(0, .2), + delay(.2, all( + rbp().opacity(0).opacity(1, .2), + rbp().margin([200,0,0,0]).margin(0, .2), + )) + )) + )) + ); + + yield* beginSlide("Add canary to stack"); + + const paddingNotif = createRef(); + const canary = createRef(); + + innerLayout().add(<> + + + + + + + + + ); + + yield* all( + paddingNotif().opacity(0).opacity(1, .3), + paddingNotif().margin([200,0,0,0]).margin(0, .3), + delay(.2, all( + canary().opacity(0).opacity(1, .3), + canary().margin([200,0,0,0]).margin(0, .3), + )) + ); + + yield* beginSlide("Add locals to stack"); + + const loop = createRef(); + const name = createRef(); + + innerLayout().add(<> + + + + + + + + + ); + + yield* all( + loop().opacity(0).opacity(1, .3), + loop().margin([200,0,0,0]).margin(0, .3), + delay(.2, all( + name().opacity(0).opacity(1, .3), + name().margin([200,0,0,0]).margin(0, .3), + )) + ); + + yield* beginSlide("the bug"); + + yield* all( + code().selection([ + ...word(14, 25, 10) + ], .3), + prevFrame().filters.saturate(.3, .3), + rip().filters.saturate(.3, .3), + rbp().filters.saturate(.3, .3), + loop().filters.saturate(.3, .3), + canary().filters.saturate(.3, .3), + paddingNotif().opacity(.5, .3), + ); + + yield* beginSlide("printf"); + + yield* code().selection([ + ...word(21, 15, 13) + ], .3); + + yield* beginSlide("stackchk"); + + yield* all( + code().selection([ + ...lines(9), + ...lines(25, 27) + ], .3), + canary().filters.saturate(1, .3), + name().filters.saturate(.3, .3) + ); + + yield* beginSlide("writing"); + + const ray = createRef(); + view.add(<> + rect().x() - rect().width()/2 - 100} + toX={() => rect().x() - rect().width()/2 - 100} + fromY={() => rect().y() + rect().height()/2} + toY={() => rect().y() - rect().height()/2} + stroke={GRAY} + lineDash={[40, 40]} + lineWidth={4} + /> + ); + + yield* all( + code().selection(DEFAULT, .3), + name().filters.saturate(1, .3), + canary().filters.saturate(.3, .3), + ray().to.y(rect().y() + rect().height()/2).to.y(rect().y() + rect().height()/2 - 700, .3) + ); + + yield* beginSlide("printf"); + + yield* all( + ray().to.y(ray().to.y() - 300, .3), + ray().from.y(ray().to.y, .3), + code().selection(lines(21), .3) + ); + + yield* beginSlide("printf stack"); +}); diff --git a/buffer-overflow-libc/src/scenes/intro.meta b/buffer-overflow-libc/src/scenes/intro.meta new file mode 100644 index 0000000..9d449e5 --- /dev/null +++ b/buffer-overflow-libc/src/scenes/intro.meta @@ -0,0 +1,5 @@ +{ + "version": 0, + "timeEvents": [], + "seed": 3803042645 +} \ No newline at end of file diff --git a/buffer-overflow-libc/src/scenes/intro.tsx b/buffer-overflow-libc/src/scenes/intro.tsx new file mode 100644 index 0000000..cd2375d --- /dev/null +++ b/buffer-overflow-libc/src/scenes/intro.tsx @@ -0,0 +1,30 @@ +import {Circle, makeScene2D} from '@motion-canvas/2d'; +import {Direction, beginSlide, createRef, slideTransition} from '@motion-canvas/core'; +import { CodeBlock, remove, insert, edit, lines } from '@motion-canvas/2d/lib/components/CodeBlock'; + +const BACKGROUND = '#282C34'; +const RED = '#E06C75'; +const GREEN = '#98C379'; +const YELLOW = '#E5C07B'; +const BLUE = '#61AFEF'; +const MAGENTA = '#C678DD'; +const CYAN = '#56B6C2'; +const GRAY = '#ABB2BF'; +const WHITE = '#FFFFFF'; +const BLACK = '#000000'; + +export default makeScene2D(function* (view) { + const code = createRef(); + yield view.add( + ); + + yield* beginSlide("Intro"); +}); diff --git a/buffer-overflow-libc/src/scenes/printf.meta b/buffer-overflow-libc/src/scenes/printf.meta new file mode 100644 index 0000000..fd2083e --- /dev/null +++ b/buffer-overflow-libc/src/scenes/printf.meta @@ -0,0 +1,5 @@ +{ + "version": 0, + "timeEvents": [], + "seed": 3508620439 +} \ No newline at end of file diff --git a/buffer-overflow-libc/src/scenes/printf.tsx b/buffer-overflow-libc/src/scenes/printf.tsx new file mode 100644 index 0000000..5820532 --- /dev/null +++ b/buffer-overflow-libc/src/scenes/printf.tsx @@ -0,0 +1,149 @@ +import {Circle, Layout, Node, Ray, Rect, Txt, makeScene2D, saturate} from '@motion-canvas/2d'; +import {DEFAULT, Direction, PossibleVector2, SignalValue, Vector2, all, beginSlide, createRef, delay, modify, slideTransition} from '@motion-canvas/core'; +import { CodeBlock, remove, insert, edit, lines, word } from '@motion-canvas/2d/lib/components/CodeBlock'; + +const BACKGROUND = '#282C34'; +const DARKER = '#21252B'; +const RED = '#E06C75'; +const GREEN = '#98C379'; +const YELLOW = '#E5C07B'; +const BLUE = '#61AFEF'; +const MAGENTA = '#C678DD'; +const CYAN = '#56B6C2'; +const GRAY = '#ABB2BF'; +const WHITE = '#FFFFFF'; +const BLACK = '#000000'; + +export default makeScene2D(function* (view) { + const code = createRef(); + yield view.add( + ); + + yield* slideTransition(Direction.Bottom); + + yield* beginSlide("Add assembly"); + + yield* code().edit(.3)` + printf("%s", text) + ${insert(` + move rdi, text + mov rax, "%s" + call printf + `)}`; + + yield* beginSlide("Add params"); + + yield* all( + code().edit(.3, false)` + printf("%s", text${insert(", 1..6")}) + ${insert(`push 6 +mov r9d, 5 +mov r8d, 4 +mov ecx, 3 +mov edx, 2 +mov esi, 1 +`)}mov rdi, text + mov rax, "%s + call printf + `, + code().selection(lines(1, 10), .3) + ); + + yield* beginSlide("Add stack"); + + const stackTitle = createRef(); + const rect = createRef(); + const innerLayout = createRef(); + const prevFrame = createRef(); + const rip = createRef(); + const rbp = createRef(); + + view.add(<> + + + + + + + + + + + + + + + + [rect().x() - rect().width()/2 + 144/2 + 20, -950]} + opacity={rect().opacity} + fontFamily="monospace" + fill={GRAY} + /> + ); + + + yield* all( + rect().x(3840/4, .3), + rect().opacity(1, .3), + code().x(-3840/4, .3), + rect().shadowBlur(20, .3), + rect().shadowOffset(10, .3), + delay(.2, all( + rect().shadowColor(BLACK + "50", .3), + prevFrame().opacity(0).opacity(1, .2), + prevFrame().margin([200,0,0,0]).margin(0, .2), + delay(.2, all( + rip().opacity(0).opacity(1, .2), + rip().margin([200,0,0,0]).margin(0, .2), + delay(.2, all( + rbp().opacity(0).opacity(1, .2), + rbp().margin([200,0,0,0]).margin(0, .2), + )) + )) + )) + ); + + yield* beginSlide("Add text"); +}); diff --git a/buffer-overflow-libc/src/scenes/program.meta b/buffer-overflow-libc/src/scenes/program.meta new file mode 100644 index 0000000..452bb75 --- /dev/null +++ b/buffer-overflow-libc/src/scenes/program.meta @@ -0,0 +1,5 @@ +{ + "version": 0, + "timeEvents": [], + "seed": 1499371786 +} \ No newline at end of file diff --git a/buffer-overflow-libc/src/scenes/program.tsx b/buffer-overflow-libc/src/scenes/program.tsx new file mode 100644 index 0000000..b0a6a16 --- /dev/null +++ b/buffer-overflow-libc/src/scenes/program.tsx @@ -0,0 +1,62 @@ +import {Circle, makeScene2D} from '@motion-canvas/2d'; +import {Direction, all, beginSlide, createRef, slideTransition} from '@motion-canvas/core'; +import { CodeBlock, remove, insert, edit, lines } from '@motion-canvas/2d/lib/components/CodeBlock'; + +const BACKGROUND = '#282C34'; +const RED = '#E06C75'; +const GREEN = '#98C379'; +const YELLOW = '#E5C07B'; +const BLUE = '#61AFEF'; +const MAGENTA = '#C678DD'; +const CYAN = '#56B6C2'; +const GRAY = '#ABB2BF'; +const WHITE = '#FFFFFF'; +const BLACK = '#000000'; + +export default makeScene2D(function* (view) { + const code = createRef(); + yield view.add( + ); + yield* slideTransition(Direction.Bottom); + + yield* beginSlide("program"); + + yield* code().edit(.3)` + $ ./hello + ${insert(` + Enter your name: + `)}`; + + yield* beginSlide("enter name"); + + yield* code().edit(.3)` + $ ./hello + Enter your name:${insert(` test`)} + `; + + yield* beginSlide("entered name"); + + yield* + all( + code().edit(.3, false)` + $ ./hello + Enter your name: test + ${insert(`Welcome test +Enter your name: + `)}`, + code().selection(lines(2), .3) + ); + + yield* beginSlide("welcome"); + + yield* code().selection(lines(3), .3); + + yield* beginSlide("repeat"); +}); diff --git a/buffer-overflow-libc/tsconfig.json b/buffer-overflow-libc/tsconfig.json new file mode 100644 index 0000000..e7d5347 --- /dev/null +++ b/buffer-overflow-libc/tsconfig.json @@ -0,0 +1,4 @@ +{ + "extends": "@motion-canvas/2d/tsconfig.project.json", + "include": ["src"] +} diff --git a/buffer-overflow-libc/vite.config.ts b/buffer-overflow-libc/vite.config.ts new file mode 100644 index 0000000..42d9d68 --- /dev/null +++ b/buffer-overflow-libc/vite.config.ts @@ -0,0 +1,10 @@ +import {defineConfig} from 'vite'; +import motionCanvas from '@motion-canvas/vite-plugin'; +import ffmpeg from '@motion-canvas/ffmpeg'; + +export default defineConfig({ + plugins: [ + motionCanvas(), + ffmpeg(), + ], +}); diff --git a/pwntools/src/project.meta b/pwntools/src/project.meta index 5ebc5fc..b604d8d 100644 --- a/pwntools/src/project.meta +++ b/pwntools/src/project.meta @@ -1,14 +1,14 @@ { "version": 0, "shared": { - "background": "rgb(40,44,52)", + "background": "rgb(200,25,85)", "range": [ 0, null ], "size": { - "x": 1920, - "y": 1080 + "x": 3840, + "y": 2160 }, "audioOffset": 0 }, @@ -17,7 +17,7 @@ "resolutionScale": 1 }, "rendering": { - "fps": 60, + "fps": 10, "resolutionScale": 1, "colorSpace": "srgb", "exporter": { diff --git a/pwntools/src/scenes/main.tsx b/pwntools/src/scenes/main.tsx index ac05bb4..77cc1a1 100644 --- a/pwntools/src/scenes/main.tsx +++ b/pwntools/src/scenes/main.tsx @@ -20,7 +20,7 @@ export default makeScene2D(function* (view) { code={"from pwm import *"} language='python' ref={cref} - fontSize={30} + fontSize={56} />); yield* beginSlide("first"); @@ -103,9 +103,7 @@ code = int(line.strip(), 16) `)}`; yield* beginSlide("code") - - yield* cref().fontSize(24, .5) - + yield* cref().fontSize(48, .5); yield* cref().edit(.5, lines(19,23))`from pwm import * @@ -242,7 +240,8 @@ io.sendline(rop.chain()) yield* beginSlide("send rop") - yield* cref().edit(.5, lines(34))`from pwm import * + yield* cref().edit(.5, lines(33))` +from pwm import * context.arch = "amd64" context.terminal = ["tmux", "splitw", "-h"]