Senior Software Engineer-Embedded Security

Motorola Solutions Framingham , MA 01702

Posted 3 months ago

You will work in and lead small multi-disciplinary teams working on the cutting edge of technology tackling some of the hardest computer problems in the world. Your role will be performing computer network exploitation: reverse-engineering, vulnerability research, and application development for custom hardware.

The position will require a broad base of knowledge of how processors, operating systems, applications, wireless network communications, and encryption protocols work under the hood.

Develop software for data analytics, network-based applications, reverse engineering tasks, embedded system development, and integration with custom purpose built hardware.Responsibilities

  • Test for and demonstrate vulnerabilities in embedded system wireless products

  • Assess the severity, strengths, and weaknesses of solutions

  • Author whitepapers describing vulnerabilities, proof-of-concept exploitation, and testing results

  • Works with customers to understand their mission, present technical information tailored to their needs, demonstrates a command of the subject material and the overall system

  • Communicates customer needs, mission, and objectives to engineers and management effectively

  • Assists in the technical approach and effort estimation for new projects

Specific Skills/Knowledge:

  • Familiarity with security principles such as data separation, side-channel attacks, least-privilege, access controls, encryption protocols, key exchange

  • Understanding of application binary interfaces and how compilers, linkers, and assemblers function to produce binaries and libraries.

  • Familiar with symmetric and asymmetric encryption protocols and key exchange mechanisms

  • Grasp of computer security principles

  • Ability to write software in C, C++, assembly, and scripting languages (Python, Perl, Ruby, etc)

  • Experience with disassemblers and reverse engineering tools (IDAPro, Binwalk, etc)

  • Knowledge of common vulnerability mitigation (DEP, NX, ASLR, etc) and exploitation (buffer overflow, heap spray, NOP sled, ROP, etc) techniques

  • Vulnerability analysis and penetration testing of embedded devices

  • Familiarity with data-at-rest and network security principles

  • Experience with processor boot process and secure boot

  • Enjoy solving unique puzzles like this:

Find an input string which will cause check_if_cstring_is_my_favorite() to return true in the following code. C Code is not available for check_if_cstring_is_my_favorite(), but the ARM disassembly is available.

int main(int argc, char *argv[])


if(argc != 2) {

printf("Usage: %s
", argv[0]);

} else if(strlen(argv[1]) != 8) {

printf("input_string must be 8 characters

} else {

bool is_my_favorite = check_if_cstring_is_my_favorite(argv[1]);

if(is_my_favorite) {

printf("You found my favorite string!

} else {

printf("That is not my favorite string.



return 0;

00008274 <_z31check_if_cstring_is_my_favoritepc>:
8274: push {r4, r5, lr}
8278: ldr r1, [pc, #80] ; 82d0
827c: sub sp, sp, #20
8280: add r4, sp, #4
8284: mov r5, r0
8288: mov r2, #9
828c: add r1, pc, r1
8290: mov r0, r4
8294: bl 9a80
8298: mov r3, #0
829c: ldrb r2, [r5, r3]
82a0: ldrb r1, [r4, r3]
82a4: eor r2, r2, #13
82a8: cmp r1, r2
82ac: bne 82c8
82b0: add r3, r3, #1
82b4: cmp r3, #8
82b8: bne 829c
82bc: mov r0, #1
82c0: add sp, sp, #20
82c4: pop {r4, r5, pc}
82c8: mov r0, #0
82cc: b 82c0
82d0: 0000be14 .word 0x0000be14
000140a8 <_global_impure_ptr-0x84>:
140a8: 3d593d40
140ac: 4c413d5f
140b0: 61735500
140b4: 203a6567
140b8: 3c207325
140bc: 75706e69
140c0: 74735f74

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Senior Software Engineer-Embedded Security

Motorola Solutions