EXHIBIT 23.5 CONSENT OF HAYNES AND BOONE, LLP We consent to the reference to our firm under the caption "Experts" in Amendment No. 2 to the Registration Statement (Form S-3, Registration No: 333-99579) and related Prospectus of Harken Energy Corporation, a Delaware corporation. /s/ Haynes and Boone, LLP ______________________________________ Haynes and Boone, LLP Fort Worth, Texas January 24, 2003